API Development projects — HireLancer archive

ID / Date Listing

API Data Telegram Notification Bot

Hi! I’m looking for someone to build a data collection bot via APIs. AI PROPOSALS WILL BE IGNORED. API docs https://docs.mobula.io/rest-api-reference/introducti...

HL-40309651

Simple Crypto Exchange ₹3-5K

I need a lightweight crypto exchange that fits within my ₹3,000–5,000 budget. I am not chasing an enterprise-grade product—just a clean, working web app where a...

HL-40309501

Developer for B2B SaaS Infrastructure

I am launching a B2B SaaS that aggregates various AI models and resells API access to developers via a pay-as-you-go portal. I will act as the operator (providi...

HL-40309306

Otomatisasi Respon WhatsApp -- 2

Saya ingin WhatsApp bisnis saya menanggapi pesan pelanggan secara otomatis berdasarkan kata kunci tertentu. Fokus utamanya adalah: • Ketika pelanggan mengirim p...

HL-40309108

API Conversion Assistance Needed

I’m migrating an existing API to a new format and need an experienced developer to handle the end-to-end conversion. The current specification and target format...

HL-40309139

Meta/WABA Developer for What's App Business Cloud API Setup

We’re looking for an experienced Meta/WAB developer to set up our WA Business Cloud API from scratch, including Business Manager verification and full API readi...

HL-40308980

ThingsBoard Devices, Widgets & Reports

I need our new ThingsBoard instance structured from the ground up so the team can start onboarding customers without touching the backend. • Device layer Follow...

HL-40308995

Reddit Data Extraction Script using PRAW (Python)

Hi, I need a Python script using PRAW (Reddit API) to collect data from a Reddit user account. Requirements: Extract all comments from a username Filter by date...

HL-40308912

Android B2B Lead Exchange

I want to launch a straightforward B2B marketplace app on Android that connects two distinct customer types: • Type A suppliers create and post leads. • Type B...

HL-40308700

Python Trading API Development

I need a small, well-structured API written in Python that focuses on trading operations, specifically the ability to close open positions programmatically. The...

HL-40308701

Node.js Backend for Frontend

I already have the full frontend design in place and now need the server-side logic to bring it to life. The stack is set: Node.js for the backend and MongoDB f...

HL-40308555

Android Vending Kiosk App Build

I need a lightweight Android kiosk application for a single-product vending machine. On load, the tablet should loop a short instructional video that shows buye...

HL-40308577

Meta WhatsApp Business Setup - 18/03/2026 01:08 EDT

I need an experienced Meta developer to get our company fully enabled on WhatsApp Business Cloud API from the ground up. This includes getting our Facebook Busi...

HL-40308264

Sports Betting Platform Build

I’m creating a cricket betting–focused wagering platform and need specialists who have already shipped real-money betting products. The core of the system is a...

HL-40308172

FastAPI + CrewAI Developer – Polish & Expand Veritas AI SaaS Builder

FastAPI + CrewAI Developer – Polish & Expand Veritas AI SaaS Builder ($4000 budget)Description: We have a live MVP at developmonsters.com (FastAPI backend, Crew...

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Intraday Zerodha Kite Bot Deployment

I am seeking an experienced Python Developer with a strong background in financial markets and the Zerodha Kite Connect API. I have a completed backtested stra...

HL-40307977

WhatsApp AI Chatbot Integration Support

I need a freelance developer who can design and deploy a WhatsApp-based AI chatbot built on Microsoft Bot Framework, then weave it seamlessly into my existing o...

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Foodie Social Network App Build

I want to turn a love of food into the heart of a mobile-first social network. The app’s core is a community feed where users trade recipes, post mouth-watering...

HL-40307817

Develop My Niche Project

Project: Development of an AI Application for Evaluating Business Ideas and Market Niches We are looking for an experienced developer to build a web-based AI ap...

HL-40307692

Android Restaurant Billing App Development

I need a complete Android-based billing application purpose-built for my restaurant operations. The app must handle table management, live inventory tracking, a...

HL-40307728

Offline-Online Hybrid App Development

I need an experienced app developer to transform the Base44 app into a hybrid offline-online application. Requirements: - Offline Functionality: - Loading Profi...

HL-40307759

WhatsApp Data-Gathering Agent

I'm seeking an autonomous agent integrated with WhatsApp. This agent will gather user queries and generate immediate responses. Key Requirements: - Stable and r...

HL-40307593

Enhance Existing Mulesoft Platform

Our integration layer already runs on Mulesoft, but it now needs a seasoned hand to push it further. The immediate focus is to refine and extend the APIs that d...

HL-40307668

Web QR Membership Management System

I need a web‑based QR‑code anonymous management system that includes membership creation (Normal, Premium, and more), booking for members on business days, memb...

HL-40307500

High-Speed Website Search Automation

I need a lean, lightning-fast script that can take a list of about 500,000 search terms, query a single website, capture the returned data for each term, and pu...

HL-40307330

Email-Login Web App Development

I need a clean, well-structured web application scaffold that I can grow feature-by-feature. The first release must already do four things flawlessly: • handle...

HL-40307283

Windows Desktop Agent (.NET/C#) — eSSL Biometric Device Integration via zkemkeeper.dll -- 2

We're building a lightweight Windows desktop agent for our SaaS gym management platform. The agent connects to eSSL/ZKTeco biometric fingerprint devices on the...

HL-40307302

B2B iGaming Website Development

I’m launching a B2B iGaming platform for the Indian and Pakistani markets and need a full-featured site built in just 14 days. I’ll supply the domain, hosting,...

HL-40307122

Automatyzacja ofert Allegro TecDoc

Chcę przyspieszyć wystawianie części samochodowych na Allegro. Dysponuję pełnym katalogiem TecDoc i zależy mi na stworzeniu procesu, który: • automatycznie pobi...

HL-40307045

Smart College Tracking Platform

I need a single, web-based application that lets me see what is happening on campus the very moment it happens. Staff status (in class, absent, free), student e...

HL-40307055

Veterinary App Development

The App — Overview Login screen — Clean, minimal design in white/pink. Supports English,, and Swedish (language flags at the top). Email + password login+ banki...

HL-40306891

Whatsapp restriction's API

I beed someone to fix my WhatsApp business account restriction with linking it to an api it shows that my WhatsApp is restricted if you know how to fix it make...

HL-40306494

Android Expense Tracker Build

I want to create a straightforward Financial Management application focused squarely on Expense Tracking and aimed at everyday, middle-class users who need a cl...

HL-40306685

Criclive.in Platform Optimization (Frontend UX + Backend Performance + Technical SEO)

I run a cricket platform, Criclive.in, and I’m looking to significantly improve the overall user experience, frontend design, backend performance, and technical...

HL-40306699

Full-Stack AI Automation Developer

My goal is to roll out an end-to-end AI solution that takes several repetitive business tasks off my team’s plate. I want to automate data entry, streamline inv...

HL-40306705

Web Developer for Transport Marketplace Startup - Great opportunity

Technical Co-Founder / Web Developer Wanted – Transport Marketplace Startup We are building an online transport marketplace similar to Shiply where customers ca...

HL-40306728

Custom KYC Software Integration

I need a fully-customised KYC solution embedded directly into our website. The core objective is “KYC verification along with time stamp & digital signature,” s...

HL-40306531

Senior Backend Engineer (Django, PostgreSQL, AI, AWS) -Individual Developer(No Agency)

We’re building a career-focused platform with a mobile-first experience, and with 60% of the product already developed, we’re now looking for an experienced bac...

HL-40306442

Telegram Channel Script -- 3

I need a small, self-contained automation system that runs reliably on Telegram channels. Selenium or Playwright are both acceptable; whichever stack you feel i...

HL-40306456

Experienced Android Enterprise API Developer

I need a developer who already knows their way around the Android Enterprise API to wire it into our existing Android application so that we can take full contr...