PostgreSQL Jobs

Title: Odoo ERP Implementation Consultant & Developer for HVAC Import / Wholesale Company Project Description We are a California-based HVAC equipment importing, wholesale, retail, and installation company looking for an experienced Odoo Implementation Consultant / Developer. We are NOT looking for someone simply to install Odoo. We need an experienced professional who can analyze our business workflow, configure standard Odoo applications correctly, and develop custom functionality only where necessary. Our company imports mini split HVAC equipment from China and manages warehouse inventory, wholesale sales, contractors, retail customers, installations, serial numbers, warranties, and landed costs. We already have a detailed implementation blueprint prepared for this project. ...

Freelance Senior Backend / AI Platform Engineer Engagement: Freelance / Contract Work arrangement: Remote Start: ASAP About the Project We are developing an AI-powered SaaS platform designed to automate complex business, document and administrative workflows. The core platform is already built and under active development. We are looking for an experienced Senior Backend / AI Platform Engineer to work alongside our existing development team to restructure, secure and strengthen the platform architecture in preparation for enterprise deployment. This is not a greenfield project. The successful freelancer will work with an existing codebase and technical team. Scope of Work 1. Onboarding & Application Boundary * Review the existing onboarding and application flow. * Restructure t...

We have an existing live bilingual Saudi offers and loyalty platform built with React, TypeScript, Node.js/Express and PostgreSQL. We want to package the existing responsive web platform as one mobile application for both iOS and Android using Capacitor or a similarly suitable WebView-based approach. This is not a request to rebuild the platform in Flutter or React Native. The objective is to reuse the existing React application and APIs while providing a reliable mobile-app experience suitable for submission to the Apple App Store and Google Play. The same application will serve different users according to their existing server-side roles and permissions: - Customer. - Store manager. - Branch manager. - Offer manager. - QR validation employee. - Platform administrator remains primari...

# Senior Full-Stack Developer - Real-Time Squash Scoring & Tournament System ## Project Overview We are a squash club in Denmark with 7 courts and regular tournaments/events. We currently have an online scoring system where referees enter scores live during matches. The basic functionality works well, but the system is unreliable, frequently goes down, and we are heavily dependent on the original developer, who is difficult to reach. We want to build a new, modern, stable and scalable system from scratch, keeping the useful functionality of the current system while significantly improving reliability, administration, tournament management and live presentation. This is not a simple website project. We are looking for an experienced senior full-stack developer with experience in re...

Looking for an experienced Full-Stack Developer to help finalize an almost-completed web application and make it fully launch-ready and deployment-ready. The project is already largely built and functional. I am not looking for someone to start from scratch. The main work will involve reviewing the existing codebase, checking that all frontend and backend components are properly wired together, fixing any broken flows, completing unfinished features, improving security, testing the application thoroughly, and preparing it for production launch. The developer should be comfortable with: * Reviewing an existing full-stack codebase * Checking frontend-to-backend wiring * Verifying API integrations * Fixing incomplete or broken functionality * Completing remaining features * Improving auth...

Our main database is already running on PostgreSQL 13 (anything in the “12.x or higher” family), and I need an experienced DBA to step in and tighten two things: First, Database optimization. The work includes reviewing current configuration parameters, checking execution plans, tuning indexes, and suggesting any schema changes that will noticeably reduce latency under peak load. If extensions (pg_stat_statements, auto_explain, etc.) should be enabled or configuration values (shared_buffers, work_mem, effective_cache_size and friends) adjusted, please make those recommendations backed by data. Second, Backup and recovery. I want a clear, scripted process—preferably with pg_dump and/or a modern tool such as pgBackRest or Barman—that covers daily backups, point-in-t...

## Job Description## Overview We are seeking an experienced, high-velocity Full-Stack Developer to build and launch an AI-driven credit intelligence and automated dispute generation platform. The architecture, database schemas, API data contracts, and deployment workflows are already fully designed and documented. We need a sharp developer who can take our structured technical blueprints and build a stable, production-ready MVP within a 30-to-45-day window. This is a clean-slate project with zero technical debt. You will be working with a lean, modern async Python stack on the backend and your choice of a clean SPA framework on the frontend. ------------------------------ ## The Technical Stack * Backend Framework: FastAPI (Python 3.11+, fully async, Pydantic v2) * Database &a...

I’m looking for an experienced and Supabase developer to build a modern website for my a football archive project. I already have a Supabase/PostgreSQL database containing players, clubs, matches, competitions and statistics. I will continue to manage and populate the data myself. The project is to turn this database into a professional, searchable football website, including: Player profiles and statistics Club profiles Match results and details Competition pages Search and filtering Responsive desktop/mobile design The website should be designed so additional statistics, records and features can be added later. Experience with , Supabase, PostgreSQL/SQL and database-driven websites is preferred. Sports/statistics website experience would be a bonus. Please include examples o...

I’m building a fully-featured fintech website and need an experienced developer to take it from concept to production. The platform must let end-users create an account, sign in with a traditional email-and-password flow, and then manage their finances through an elegant, mobile-responsive interface. Core modules will include user authentication, personalised dashboards, payment or transaction handling, rich data visualisations, and a lightweight admin panel. Strong application-level security (OWASP best practices, encrypted credentials, rate limiting) is mandatory, as is fast performance on both desktop and mobile. My preferred stack is React or on the front end, backed by Node.js or Python services that talk to a PostgreSQL database and external payment/banking APIs. I inten...

Senior Technical Auditor for I am looking for an experienced senior full-stack technical auditor to conduct an independent review of an existing bilingual Saudi offers and loyalty platform called Chance Plus. The platform is currently live and deployed in production. This is not a new development project and I am not requesting a rebuild. The initial task is strictly to review, test and report on the existing implementation before onboarding the first real store. Technology stack: TypeScript React and Vite Node.js and Express PostgreSQL Drizzle ORM and database migrations REST APIs and OpenAPI Progressive Web App (PWA) GitHub, pull requests and CI/CD DigitalOcean App Platform and Managed PostgreSQL Arabic and English interfaces, including RTL support Platform structure: Custo...

build a simplified MVP (Minimum Viable Product) first. App Name BizFlow Ghana Core Features 1. Dashboard Total leads Sales today Active customers Revenue tracker 2. Funnel Builder Drag-and-drop page builder Landing pages Thank-you pages Sales pages Lead capture forms 3. CRM Store customer details Notes and follow-ups Customer tags Sales pipeline 4. WhatsApp Integration One-click WhatsApp chat Broadcast message templates Customer follow-up reminders 5. Email Marketing Email campaigns Automated sequences Subscriber management 6. Network Marketing Module Prospect tracking Team member management Commission tracker Product catalog 7. Payment Integration MTN MoMo Telecel Cash AirtelTigo Money Paystack Stripe 8. Analytics Funnel conversions Sales reports Lead sources Team performance Technology S...

We are looking for an experienced Full-Stack Developer to complete and deploy , a SaaS platform currently ~80% developed in Bolt.new. Scope of Work Complete, test, fix, and launch the platform, including: Generation – Social/content generation features Analytics & Reporting Review Generation & Management Engagement Collaboration White Label / Branding Subscription Plans Payment Gateway Integration Hosting & Production Deployment Bug fixing, UI/UX polishing, API/integration checks Database, security, performance & responsive testing Final production setup and successful launch Important: The existing project/code will be provided. We need someone who can understand the existing architecture, complete the remaining development without unnecessarily rebuilding it, a...

Full-Stack Developer Required — SWARNAYA Functional MVP Project Overview We are looking for an experienced full-stack developer to build the first fully functional MVP of a new fintech/savings platform. We already have the UI/UX design and interactive prototype. We need a developer who can convert the design into a working application with a real backend, database, authentication and payment integration. This is not a static website or visual demo. Core features must be functional. Required Application 1. Customer Web Application The application must be fully responsive and optimized for mobile. Required features: * Customer registration * Mobile number authentication * OTP verification * Customer profile * Basic KYC information capture * Savings plan selection * ₹100/day p...

I’m putting together a restaurant POS modeled closely on the Petpooja experience, and I need the backbone of the system built right away. Your task is to create clean, well-documented PHP APIs that my mobile and web teams can plug into immediately. Scope of the APIs • Core focus: real-time inventory management—stock levels, item variations, automatic deductions after each sale, low-stock alerts, and simple purchase-order generation. • Seamless sales and transaction hooks so that, when I’m ready, we can extend the same codebase to cover billing, reporting, and customer data without rewriting everything. • Secure authentication, role-based access, and clear JSON responses are mandatory so integration stays painless. • MySQL (or MariaDB) is prefe...

I have an existing Excel form that collects both text and numerical inputs. I now need that form wired to a simple web-based submission flow so users can fill it out online instead of emailing me the file. When they hit “Submit,” the collected values should be pushed directly into a back-end database for safe storage and later analysis—no other post-submission actions are required. Please build a lightweight web form that mirrors the current Excel layout, handle all field validation for mixed data types, and create the connection layer that writes each record to the database. A short hand-off guide or commented code explaining how to adjust the form fields in the future will round out the job. Key deliverables: • Responsive web form that captures every Excel field ...

Our production systems run on a dedicated PostgreSQL database server that needs ongoing, professional management to keep performance high and downtime at zero. I need an experienced PostgreSQL administrator to take charge of routine upkeep, monitoring, and rapid incident response so the team can stay focused on product development. Scope of work You’ll handle version updates, configure and verify automated backups, watch key metrics, fine-tune queries and indexes when bottlenecks appear, and strengthen security by keeping roles, permissions, and network rules tight. The server is Linux-based and accessed via SSH; fluency with psql, pgAdmin, and common monitoring stacks (Prometheus, Grafana, or similar) will make the job straightforward. Deliverables • Initial health audit ...

I need to add end-to-end payments processing to my application so that customers can complete financial transactions without ever leaving the platform. The core work involves choosing and integrating a mainstream gateway (Stripe, PayPal, Adyen or a comparable API), wiring up the server-side logic, and exposing clean client-side calls that handle tokenisation, 3-D Secure flows, refunds and recurring charges where relevant. The codebase is currently built in Node.js with a React front end, so familiarity with this stack, REST/GraphQL, and typical PCI-DSS best practices is important. I already have merchant accounts in place; what I am missing is the glue that turns an order into a confirmed, securely captured payment and stores the resulting transaction metadata in my PostgreSQL database....

I’ve already put the back-end in place with Node.js and PostgreSQL and now need a skilled React + TypeScript developer to bring the interface to life. The goal is a minimalist, clean UI that feels effortless on desktop and mobile alike. Core requirements • Responsive design that adapts smoothly from phone to large display • Snappy interactive elements (think instant feedback, subtle animations, optimistic updates) without bloating the bundle • WCAG-aligned accessibility so keyboard and screen-reader users share the same experience You’ll receive REST/GraphQL endpoints, design wireframes, and the component outline. From there, I expect modular, well-documented code, sensible state management (Redux Toolkit or React Context are both fine), and commit histor...

I’m putting together a cross-platform billing and inventory SaaS that must run smoothly on the web (React) and mobile (Flutter). The core stack is already chosen: a Django backend with a PostgreSQL database, all deployed on AWS. Key functional blocks you’ll build and wire up: • Subscription engine – monthly recurring plans driven by Razorpay Subscriptions API, with optional Stripe fallback, automatic invoicing, proration, and dunning logic. • GST-compliant invoice management – create, edit, email, and share invoices; integrate with the GSTN e-invoicing APIs for real-time IRN and QR code generation. • Inventory & batch tracking – receive stock, monitor quantities, lot/expiry dates, and link sales orders to inventory reductions. &bul...

We run a workflow-automation SaaS that lets customers build event-driven processes, route approvals, and call external services. The stack is Java 17, Spring Boot, PostgreSQL, Celery, Redis, Docker and AWS, all delivered in a fully multi-tenant environment. The immediate goal is to harden security and drive horizontal scalability without slowing feature delivery. That means: • Strengthening authentication, authorization and tenant-isolation layers • Stress-testing and tuning PostgreSQL schemas, indexes and queries for millions of tenant rows • Refining REST/JSON APIs so third-party services can plug in cleanly, with versioning and clear contracts • Profiling Spring Boot services, Celery workers and Redis caching to remove bottlenecks, then containerising improve...

Project Title Zoho + Supabase Developer / Team for Data Migration & Ongoing Backend Support Project Description We are looking for an experienced Zoho developer, backend developer, or small development team to help migrate data from our existing Zoho environment into a new Supabase/PostgreSQL backend. This project may also develop into ongoing backend development and maintenance work through Freelancer.com after the initial migration is completed. Our organization currently uses Zoho Recruit, Zoho CRM, Zoho Books, and other Zoho applications to manage recruitment, candidates, employers, clients, and operational data. We are developing a new recruitment and job platform with Supabase/PostgreSQL as the primary backend. The platform already has an initial backend and application ar...

Ahoj, hledám freelancera na vytvoření jednoduchého webu / webové aplikace pro AI textovou adventuru. Princip: * uživatel si vybere předem připravené dobrodružství, * každé dobrodružství má vlastní příběh, pravidla, hádanky, předměty a několik možných konců, * hráč dostává text + obrázek aktuální situace, * následně sám napíše, co chce udělat, * AI jeho akci vyhodnotí a pokračuje v příběhu podle předem připraveného scénáře, * nechci čistý AI generátor, který si celý příběh vymýšlí sám – jednotlivé hry budou předem vytvoře...

I have a small in-house codebase that already runs a few large-language-model helpers, but I now need to expand it with three new agents: a Sales Assistant, an Email Agent, and a Document Management Agent. All three must plug into the same Python stack (LangChain, OpenAI API, vector store, webhook layer) and respect our existing coding patterns. Here is the core scope we will iterate on together: • Sales Assistant Agent – Lead generation from incoming data feeds and web sources – Follow-up communication that can draft, personalise, and schedule messages – Basic sales analytics so my team can see pipeline health at a glance • Email Agent – Automated responses that pick the right template and tone – Sorting and categorisation i...

Freelancers Wanted – SEO + Automotive Workshop Software We are looking for experienced freelancers for a long-term project for an Australian automotive repair business. 1. Local SEO Specialist Improve Google Business Profile & local rankings Build quality 250 backlinks for each website & GBP 30 SEO posts/month 15 basic social media reels/month Weekly progress reports Posts submitted for approval before publishing For SEO: Budget ₹3,500/month, long-term opportunity 2. Full-Stack Developer We need a modern, cloud-based Automotive Workshop Management System including: Customer & vehicle database Digital job cards, quotes & invoices Vehicle service history SMS/email notifications & reminders Online bookings Digital vehicle inspections with photos/videos Google r...

I have an existing Excel form that collects both text and numerical inputs. I now need that form wired to a simple web-based submission flow so users can fill it out online instead of emailing me the file. When they hit “Submit,” the collected values should be pushed directly into a back-end database for safe storage and later analysis—no other post-submission actions are required. Please build a lightweight web form that mirrors the current Excel layout, handle all field validation for mixed data types, and create the connection layer that writes each record to the database. A short hand-off guide or commented code explaining how to adjust the form fields in the future will round out the job. Key deliverables: • Responsive web form that captures every Excel field ...

Projeto: iX Farma — Aplicativo de delivery para farmácias Busco um profissional ou equipe para desenvolver o iX Farma, um aplicativo de delivery de farmácia inspirado no modelo do iFood. O objetivo é conectar clientes, farmácias/lojas e motoboys entregadores em uma mesma plataforma. O lançamento inicial será em Vitória da Conquista – BA, com possibilidade de expansão para outras cidades no futuro. Quero uma primeira versão funcional, segura e com custo controlado (MVP), priorizando o fluxo principal de pedido: cliente escolhe produtos em uma farmácia, realiza o pedido, a farmácia prepara e um motoboy faz a entrega. Perfis de usuários Cliente Criar conta, fazer login e recuperar senha. Cad...

Part-Time Flutter/Node Developer — Ongoing Fixes, New Feature Build & Ad Hoc Maintenance About the Project Global Kirtan App (GKA) is a non-denominational platform for kirtan, sacred sound, and bhakti practice, built for a global audience spanning devotional practitioners, yoga communities, sound healers, and spiritual-but-not-religious users. It's a freemium mobile app combining regular practices, audio/video streaming, a lyrics library with translations, tutorials, event discovery (map + calendar), facilitator and community profiles, and an instrument shop. This isn't a from-scratch build. A working Flutter app already exists with a live backend, and it's been through an independent technical audit — we know its real strengths and its real problems. We&#...

I have a complete, clean PostgreSQL database of a football club's entire match history — 120 years, roughly 6,900 matches, with lineups, goals, cards, players, managers, referees and venues. **The data work is finished.** I need a developer to build the website on top of it. There is a full written specification and a technical appendix documenting every table and data convention. Both go to shortlisted bidders. This is a well-defined build, not a discovery project. ### What exists already - A PostgreSQL 17 dump (~10 MB, 35 tables) that restores cleanly, with a documented schema - A working read-only reference viewer you can browse: **** - A ~15-page specification covering every page, every form, colours, and an acceptance checklist - A technical appendix covering data conven...

I need an experienced developer to carry out several coordinated upgrades on my existing e-commerce system. 1. PHP Admin Panel The product-management area must let me update existing items more intuitively. That means revising the update logic, refactoring the related PHP views/controllers, and adjusting any database calls so new fields or validations are stored reliably. 2. Flutter Mobile App Parallel to the back-end work, the customer-facing Flutter app needs UI tweaks that mirror the revised product data structure and keep the overall look consistent with our latest branding guidelines. 3. POS Integration Our in-store POS has to feed sales, stock moves, and pricing changes straight into the admin panel. A clean, real-time sync (REST or webhook—whichever fits best...

I'm looking for an experienced developer to create a web application aimed at improving English fluency through interactive speaking exercises. The app should include: - Interactive speaking exercises as the primary function - Voice recognition and feedback - Progress tracking and reports - Game-like activities and challenges Ideal skills and experience: - Strong background in web app development - Experience with voice recognition technology - Ability to implement engaging, game-like features - Familiarity with progress tracking systems and user-friendly report generation Please include any relevant work samples in your bids.

I run a busy plumbing-supply shop and need a small web portal that makes every new purchase entry worth more than a line on paper. Here is the flow I have in mind: the counter staff open the site, record the item name and quantity, note the supplier and the exact purchase cost, then hit “Save.” As soon as that happens two things must occur automatically: 1. The system stores the entry so I can search, filter or export it later. 2. A WhatsApp Business message is fired off to a pre-defined contact list—filtered by the product category we’ve tagged—letting customers or team members know fresh stock has arrived. Only the “new purchase entry” event should trigger these notifications; low-stock or scheduled reports are not required right now. I ...

Machine Learning Pipeline – Job Market Analytics & Salary Prediction Created an end-to-end machine learning pipeline for looking at job market data and guessing what salaries might be. Key Features: Worked on. Fixed 10,000 or more job-market records using Python, Pandas and NumPy. Made an automated ETL/data preprocessing pipeline to take care of data cleaning, changing data making it all the same and checking if it is all the same. Added a PostgreSQL (Neon) database to keep data in a good way and help with machine learning work. Did analysis of the data. Looked at the features to find what helps predict salary. Trained a Random Forest regression model to guess salaries. Found that employee_residence is one of the things to use for guessing salaries. Built a Fas...

This project involves building an end-to-end QR Code Parking Tag system that works seamlessly as both a responsive web application and a Telegram bot. The single most important capability right now is reliable QR-code scanning so attendants can quickly validate a vehicle’s tag from any mobile device or desktop webcam. Key expectations • One shared backend should power both the web front end and the Telegram bot, so data stays in sync. • The web app needs a clean dashboard where administrators can create and manage parking tags, monitor scans in real time, and export simple usage logs. • The Telegram bot must mirror the same scan-and-validate flow, returning an immediate success/denied message inside the chat. • Code quality and clear documentation are cru...

Title: AI-Powered Price-Discovery Web & Multi-Module Mobile App Deployment (Indian Agency Only) Project Description: We are launching , an innovative AI-powered price-discovery and consumer utility ecosystem based in Delhi. We are seeking a registered Indian Software Development Company with an established, verified in-house team to deliver our Phase 1 infrastructure: a responsive Web portal, an Android App, and an iOS App. The core system architecture and functional flow of this project are modeled after established Indian shopping utility and AI-driven comparison engines, specifically superdost () Smartprix, (Kompare AI), and Buyhatke. The selected development company must analyze these benchmark applications to understand our required structural baseline. Core Project Scope Ele...

Full-Stack Web Booking Platform & Desktop Client Extension (Node.js/React/Electron) Description: We are seeking an experienced Full-Stack Developer or small Development Team to build a multi-stage scheduling and session utility platform. The project starts with a custom web booking system (Phase 1) and will expand into a native desktop application (Phase 2). Key Technical Requirements: Backend: Node.js, NestJS, PostgreSQL Frontend: React.js / , TypeScript, Tailwind CSS Desktop Client: Electron (TypeScript) or C# .NET Integrations: Google Calendar/Meet API (OAuth2), Transactional Email, AWS S3, WhatsApp Business API Scope Summary: Phase 1 (Web Platform): Rolling-window availability booking calendar, multi-timezone management, automated Google Meet link generation per host, custom adm...

I need a Flutter mobile app with a backend. The backend should support API integrations. Ideal skills and experience: - Proficiency in Flutter and - Experience with API integrations, particularly with payment gateways and third-party services

Overview: We are seeking an experienced full-stack developer or agency to build an AI-powered OCR Challan Processing & Automated Billing System. The solution will automatically read uploaded challan images/PDFs, extract relevant data, group them shop-wise, and trigger automatic PDF invoice generation once a shop reaches 200 processed challans. Key Features & Modules: Authentication: Secure user login with JWT and password protection. OCR & AI Extraction: Extract Shop Name, Challan Number, Product Details, Quantity, and Date using Google Vision API (or equivalent). Includes AI validation and duplicate detection. Shop-wise Segregation & Counter: Separate challans by customer/shop and automatically track count (e.g., 198 → 199 → 200). Automated Invoicing: Auto-g...

I run several production workloads in AWS here in Singapore and need a partner who can jump in any time—day or night—without the lag a distant time zone creates. Fast, reliable WhatsApp communication is non-negotiable; that is how my team escalates issues and approves changes. Core stack you will care for: • EC2 instances that host our main applications • S3 storage buckets for static assets and backups • RDS databases (primarily MySQL / PostgreSQL) We also lean on Elastic Load Balancing, IAM, and Shield/WAF, so familiarity with those services is important. Beyond break-fix help, I’m looking for proactive value: • Consultation on architecture and cost-/performance best practices • Regular system-health monitoring with early-war...

Build & Deliver RTIQA v1 — Global Multi-Tenant EdTech Platform RTIQA is a large, long-term project aimed at building an impactful global EdTech SaaS platform combining: - School Management System (SIS) - Learning Management System (LMS) - Student Information Management - Parent Engagement - Secure Assessments and Academic Records - Certificates and Verification with Public Verification Pages - Notifications and Communication - Practical AI-Powered Educational Assistance Tools This is a full engineering challenge focused on delivering ONE complete and production-ready outcome. The successful freelancer or team will review the existing repositories, analyze the architecture, consolidate or refactor as necessary, and take RTIQA from its current work-in-progress state to a secure, ...

Statement of Work (SOW): Parking Agent MVP Development ## 1. Project Overview & Objective Parking Agent is an app-less, privacy-first QR vehicle communication platform. The objective of this project is to build an Minimum Viable Product (MVP) consisting of a pre-generated QR inventory system, a secure mobile web interface for vehicle owners and scanners, automated OTP/notification routing, and a basic administrative management panel. --- ## 2. Technical Stack & Requirements (Recommended) * **Backend Framework:** Node.js (Express/NestJS) OR Python (FastAPI/Django) * **Database:** PostgreSQL (Relational database for structured QR mapping and vehicle relationships) * **Caching/Session:** Redis (For OTP storage, rate-limiting, and short-term link verification) * **Frontend:** React....

## Custom Suit Designer & E-Commerce Website Development I am looking for an experienced **full-stack web developer** to develop a modern custom clothing e-commerce website with an interactive **custom suit personalization system**, similar in concept to the customization experience offered by Hockerty. ### Project Overview The website should allow customers to design and customize their own suits online through an intuitive, step-by-step interface. Customers should be able to select different suit styles, fabrics, colors, patterns, fits, and other customization options and see their selections reflected visually. ### Key Features **1. Interactive Suit Customizer** * Suit/jacket style selection * Fabric selection * Fabric colors and patterns * Lapel style * Buttons and but...

Project Overview: We are looking for an elite Full-Stack / Mobile Developer to build AFRIMATI-COMMERCE, an innovative B2B transactional marketplace connecting agricultural producers and livestock farmers directly with bulk buyers, processors, and exporters. Our mission is to build a seamless human and economic synergy (osmose) that cuts out destructive middlemen and empowers rural producers. The Deliverable: • 2 Native Mobile Applications (Android & iOS) built with a unified framework (React Native or Flutter). • A robust backend API powered by NestJS (Node.js) with a PostgreSQL database. Key Functional Scope: • Wholesale B2B Only: Designed strictly for bulk quantities (metric tons, 100kg bags, livestock herds). No retail. • Secure Escrow System: Critical integrat...

I need a clean, well-structured Django application that works as a dedicated content management system for product listings. The core of the job is to let me create, edit, and retire products easily from an admin dashboard while the public site instantly reflects every change. Key capabilities I must have • Inventory management – automatic stock tracking, low-stock alerts, and a simple bulk-update screen. • Product categorization – nested categories, drag-and-drop reordering, and URL slugs that honor the hierarchy. • Advanced search – fast, faceted search across titles, descriptions, tags, and category names (Elasticsearch or PostgreSQL full-text search is fine). I’m already comfortable deploying on a typical Linux/Nginx/PostgreSQL stack, so t...

Necesito desarrollar una API robusta en .NET 9 o superior que automatice por completo la emisión de documentos tributarios electrónicos (DTE) para el Servicio de Impuestos Internos (SII) de Chile. Alcance funcional • Generación XML de cada DTE. • Firma electrónica avanzada (FEA) incorporando certificado digital. • Envío masivo o individual al SII y recepción del acuse. • Consulta de estado y almacenamiento de track id. • Registro de respuestas del SII para auditoría interna. • Endpoints protegidos con autenticación JWT. Tipos de DTE que debo cubrir • Facturas • Notas de crédito • Notas de débito • Boletas Requisitos técnicos * .NET 9+, C#, ...

Our eKYC platform is live, but the two-factor authentication built into the public weblink is failing consistently. Users receive the OTP/SMS push, enter the code, and the process stalls with a generic “authentication error” before redirecting them back to the login page. Server logs show no obvious stack trace, so I need someone to dig in, reproduce the fault, and patch it without disrupting the rest of the flow. What I know so far • Front-end: React single-page component that posts to a Node/Express API • Auth layer: JWT for the first factor, OTP via Twilio for the second • Database: PostgreSQL 14 • Error appears only in production, not in our staging environment Your job 1. Trace the call from the React form through the Express middleware to p...

I have several structured Excel sheets that hold our current service records. I need every row from those files accurately entered into our live service database, preserving all field relationships and ensuring there are no duplicates. You may work directly in the database interface or prepare a clean CSV/SQL file for me to review before we import—whichever is faster for you while still keeping the data intact. The key for me is accuracy and consistency: each service line in the spreadsheet must map to the correct table and column, and any reference keys need to stay usable once the data is inside the system. After you finish, please run a quick spot-check with me so we can confirm totals and sample entries match what’s in the spreadsheet. Let me know: • the database pla...