API Development projects — HireLancer archive

ID / Date Listing

Cross-Platform Push Sync

I already have both mobile apps (iOS and Android) and a web app online. What I’m missing is a single, reliable push-notification flow that keeps every platform...

HL-39944118

Headless CMS Expert Node js & Next js Support to my developer

Headless CMS Expert (Node.js / Next.js Support) We’re looking for a Headless CMS expert to assist our developer with Node.js and Next.js integration. Experience...

HL-39944140

Engineering Inspection Tracking App

I need a functional prototype that lets both engineers in the field and their managers log, review, and export engineering inspections from any device. At the c...

HL-39943921

Experienced APIGEE Developer Needed

I have a portfolio of REST-based services that I’m ready to expose through Google Apigee, and I need an expert who can jump in right away and stand everything u...

HL-39943973

ERP SaaS Multientidade Municipal

Procuro uma equipe capaz de entregar uma solução ERP 100 % web, em modelo SaaS, responsiva, multiusuário e multientidade, garantindo a separação plena entre Pre...

HL-39943762

Graphene OS (AOSP) INTEGRATION -- 2

Graphene (OS) stock Android Open Source Project build and need a background service added that quietly boots with the system and gives me full visibility into t...

HL-39943806

Mastercard OAuth 1.0a Integration

I need a working OAuth 1.0a flow wired into my existing web application so it can talk to the Mastercard APIs behind their secure gateway. The site is already u...

HL-39943842

Custom SMTP Server Development

I need a functional, lightweight SMTP server that lets my team send newsletter-style emails without relying on third-party services. Think of it as a stripped-d...

HL-39943846

Driving License Printing & Dispatch Web App

I need a single, browser-based application that takes a driving-license record from my existing database, renders the card with all personalised elements, drive...

HL-39943593

Deploy BiRefNet on RunPod

I’m looking for someone who can turn the open-source BiRefNet background-removal model into a production-ready RunPod Serverless endpoint. I will import your Gi...

HL-39943371

React Native Job Portal App

I need a React Native build that mirrors the current mobile experience of my web app (https://dev.d3frb7rxisio3j.amplifyapp.com/ — log in with any phone number,...

HL-39943444

Develop WhatsApp Shopping Cart Flow

Review current catalog: Identify product IDs, names, images, prices, and cart structure. Define conversation flow: Map each stage: Browse → Checkout Cart summar...

HL-39943446

Node.js & EJS Mentoring Session -- 2

This is the first in a short series of focused sessions—my budget for this kickoff is US $30—and it will be entirely about deepening my understanding of the con...

HL-39943267

Telegram Bot for Digital Sales

I’m looking for a simple, no-frills Telegram bot that can sell my digital products directly inside a chat. Core needs • A compact product catalog (up to ten ite...

HL-39943059

Firebase PDF/DOCX Generator Function

I need a production-ready Firebase Cloud Function that can produce both PDF and DOCX files on demand. The service must accept variable data, merge it into reusa...

HL-39943100

IBM Sterling OMS Development Support

My team is in the development phase of an IBM Sterling Order Management implementation and I need an experienced Sterling OMS developer to strengthen our order-...

HL-39943110

Develop Multi-Tenant Project Management App

Below is the requirement for what we are planning to develop. But the requirement is only the basic of what we think is achievable. So we need to connect in cha...

HL-39943157

Automated Nifty Options Trading App

I want to turn my current Nifty option-trading routine into a fully automated application. The core logic is a trend-following strategy, so the program must wat...

HL-39942913

Laravel Form Submission Error Fix

Each time my Laravel form is submitted the request stalls until it finally throws a database-level connection timeout. The same model reads and updates fine els...

HL-39942879

Custom WhatsApp Solution Needed - 03/11/2025 00:40 EST

I am ready to build out a tailored WhatsApp-based solution and would like an experienced professional to guide and execute the technical work from start to fini...

HL-39943008

Customizable Quotation-Invoice System Development

Quotes and Invoices Core Framework Overview Platform • Private website hosted on your own server • Secure login for you and any staff (if needed) • Admin dashbo...

HL-39942976

Leo AI Siemens NX Add-in development

We are seeking an experienced developer to develop a Siemens NX add-in that integrates with the Leo AI desktop application. The goal is to provide functionality...

HL-39943007

AI-Powered Hospital CRM Integration

I need an AI-enabled CRM that streamlines patient management inside our hospital network. The platform must: • Maintain comprehensive patient records, automatic...

HL-39942805

Test My Node-Mongo Backend

I have a fully written Node.js + Express API that uses Mongoose for data access. Because my M1 Mac can’t spin up MongoDB locally, I need a quick live test on yo...

HL-39942797

Nutrition Platform Web Development

Website Development Brief Client: [Business Name TBD] Project Type: Subscription-Based Nutrition Platform 1. Project Overview This project aims to develop a sub...

HL-39942576

C#, .net core with angular Full Stack developer

Looking for a Full Stack Engineer. TOP SKILLS: C# / .NET SQL Server Microservices architecture Enterprise architecture React or Angular or Lit

HL-39942621

Prediction Market Trade Copier

I need a full-stack application that can mirror trades from prediction markets—starting with Polymarket—and push those actions, in real time, to any number of f...

HL-39942394

Automated Chrome-Thunderbird Installer Development

PROJECT OBJECTIVE. Develop a robust Windows installer that sets up my existing automation so that it runs reliably on any Windows 11 laptop with Google Chrome a...

HL-39942442

n8n Data Integration Workflow

I need a clean, reliable n8n workflow that handles data integration, specifically pushing customer information into Google Sheets. The source system is already...

HL-39942446

Phase-1 Property Portfolio Manager

I’m kicking off Phase 1 of a web platform that lets property investors and their accountants ditch spreadsheets and bring everything into one place. The system...

HL-39942367

Backend Feature Development & Integration

I’m upgrading an existing website and the first priority is strengthening its backend functionality. I need a developer who can dive into the current code-base,...

HL-39941396

Shoppe Pay Cart Development

I’m launching Shoppe Pay as a web-based store and need a developer who can stand up a reliable, user-friendly shopping cart from the ground up. The site itself...

HL-39942095

App de Taxi tipo Uber

Quiero cotizar el desarrollo de un aplicativo de taxis similar a Uber, inDriver o Cabify. La solución debe incluir tres componentes: app para pasajero, app para...

HL-39941957

Long-Term Part-Time Full stack Django Developer

We’re looking for a reliable Full Stack Developer (Django) to join our small remote team on a monthly, part-time basis. Salary: $320 USD/month Hours: ~5 hrs/day...

HL-39941965

USAA Banking Project

I need a hands-on Java backend developer who is comfortable jumping into an existing Spring Boot codebase and helping me tackle day-to-day tasks. My immediate p...

HL-39941836

Agile Reactive Website Build

11-2-2025 Budget $1,200 for 8 milestones. 3 to 6 months project. After reading the following apply for job Project ID: 39941902 for Milestone 1. You will apply...

HL-39941922

Scalable Custom Blockchain Ecosystem

I’m building a fully-decentralized blockchain purpose-built for frictionless financial transactions, game-centric dApps, and an integrated NFT marketplace. The...

HL-39941753

Graphene OS (AOSP) INTEGRATION

I maintain a custom Android Open Source Project build and need a background service added that quietly boots with the system and gives me full visibility into t...

HL-39941743

Warehouse Management App Prototype

I need a lean, working prototype of a warehouse management system that covers our day-to-day essentials without the bells and whistles. The core features I must...

HL-39941608

Food & Grocery Delivery App

I need a full-featured mobile application that lets people order restaurant meals and everyday groceries from a single, consistent interface. The project must s...