Backend Development projects — HireLancer archive

ID / Date Listing

Fintech Platform Code Oversight

I need a senior‐level engineer to act as my technical watchdog while an offshore team builds our new Middle-East focused fintech platform. Your job is purely ov...

HL-40609520

Website and Modern Logo Design

I need a clean, fully-functional website built from scratch and, alongside it, a modern-style logo that captures the brand’s personality. Because this is primar...

HL-40609545

Senior Cloud/API Engineer for High-Concurrency REST & GraphQL Data Synchronization Optimization

We are optimizing a high-concurrency web application frontend and data pipeline interacting with complex REST and GraphQL endpoints. While 95% of our system arc...

HL-40609554

Senior Cloud/API Engineer for High-Concurrency REST & GraphQL Data Synchronization Optimization -- 2

We are optimizing a high-concurrency web application frontend and data pipeline interacting with complex REST and GraphQL endpoints. While 95% of our system arc...

HL-40609442

Python, Flask, Django Work Needed/New Freelancer

We need some New freelancers of Pakistan or India we need long term work at low budget New Freelancer with good experience in Python, Flask, Django etc in codin...

HL-40609472

Flutter OPPO Background GPS Tracking Demo (Price can be negotiated. Have experience on AMAP and Tecent/NetEase IM third-party sdks integration) - 28/07/2026 01:17 EDT

Brief Requirement: Build a Flutter demo for OPPO phones only, stable GPS location under lock screen, background run & normal power saving mode (system cannot ki...

HL-40608868

Multi-Branch Spa API Integration

I need an experienced developer to extend the Simple Spa booking platform so that my clients enjoy one seamless view of everything we offer, regardless of locat...

HL-40608646

Cin7 Assemblies & Backend Support

I need an experienced Cin7 specialist to take full ownership of our backend setup. Your first priority will be building accurate assemblies—essentially creating...

HL-40608509

Python Prisma SOAP Automation

I need a small Python module that uses Prisma as its ORM layer while talking to an external SOAP API so routine tasks can run without any manual input. The SOAP...

HL-40608359

Restaurant Booking App Fixes Needed

I already have a working restaurant-booking application online, but a handful of features are misbehaving and the interface no longer feels polished. I need a d...

HL-40608111

Bespoke Cross Platform Web App

I’m ready to have a full-featured web application built for my business that looks and works flawlessly on both desktop and mobile screens. The goal is a comple...

HL-40608130

HTML Wifi Captive Portal

I have an HTML wifi portal in template form which needs to be brought up to the working level. 1) Link stripe API, manage redirect success, auto-recharge billin...

HL-40608168

Care Provider CRM & ATS Development

I'm looking for a developer to create a comprehensive CRM and ATS software tailored for care providers and staffing agencies. The platform should streamline com...

HL-40607939

Grocery Store E-commerce Site

I run a general grocery and now want to sell online under my own domain rather than relying on out-of-the-box platforms like Shopify, WooCommerce or Magento. I...

HL-40607779

Demo Trading Platform Bridge

I want a web-based demo trading terminal that feels as slick as Zerodha’s Kite but works only as a simulator. The screen should show live market quotes and dept...

HL-40607796

High-Volume Email Verifier Development

Python / Node.js Developer for High-Volume Bulk Email & Webmail Verifier (MX Lookup + SMTP Handshake) I need a robust bulk-email verifier that can chew through...

HL-40607753

Educational Course Platform Development

I plan to launch a full-featured online educational platform whose sole purpose is to deliver structured courses with live online classes and resources. The sit...

HL-40607662

Recipe Website Migration to Next.js

We run a recipe website with around 2,400 published posts that earns its revenue from display advertising and affiliate links. Traffic is roughly 400,000 sessio...

HL-40607359

Web-Based Vastu Architecture Tool

I am creating a browser-run application that blends Vastu Shastra with modern architectural design. Users should be able to log in, lay out a home, shop, office...

HL-40607394

Multi-Tab Streaming Web Application

I need a small internal web application that can log in to a chosen streaming platform (I will confirm later). The login flow relies on a simple username-and-pa...

HL-40607444

Complete E-Commerce Platform Build

I want to take an e-commerce idea from concept to a live, revenue-ready website or app. This is a full-cycle Web & App Development project, so I expect design,...

HL-40607280

Unlimited Global SMS Marketing Sender

I need a tool that lets me fire off unlimited SMS messages worldwide, specifically for marketing campaigns. My contact data will arrive in simple CSV uploads, s...

HL-40607326

Technical Lead/Solution Arc for Health Tech IoT Scaling

We are a health technology company building a wireless, non-wearable fall detection sensor for elderly people. The sensor streams event and vitals data continuo...

HL-40607325

E-Commerce Web App With Bank-Transfers

I want to launch a small-scale e-commerce web application that accepts Bank Transfer as the sole checkout option. Beyond the finished site, my goal is to deepen...

HL-40607062

Investment Website Design With Accounts

I want to launch a professionally designed investment website whose standout element is a secure user-account area. Visitors need to be able to sign up, create...

HL-40607080

Bilingual Developers Needed (English/Spanish)

A Ukraine based company is looking for DEVELOPERS who can speak Spanish and English at advanced level. IF YOU CAN'T SPEAK SPANISH, YOU WILL BE AUTOMATICALLY REJ...

HL-40606754

MongoDB Backend Developer Needed

I'm looking for an experienced backend developer to manage database operations and implement user authentication. Key Requirements: - Database Management with M...

HL-40606761

Full-Stack Development Assistant

I’m looking for a hands-on engineering partner who can step into every phase of the development cycle and help me bring an innovative software product to life....

HL-40606775

Android Puzzle Game With Rewards

I have drafted the concept for a mobile-first puzzle game where players can earn real-world rewards for their in-game success. I now need an experienced develop...

HL-40606501

Apps & Website Setup

i want someone to setup this purchased app completely for me, it includes, provider app, serviceman app, user app, website and backend. please read the setup do...

HL-40606518

VFX Tool API Integration

I'm seeking a skilled backend developer to create a multi-API pipeline inside BuildShip for our VFX tool. The frontend is already completed on Bolt.new. Your ta...

HL-40606526

Snapchat API Integration

DealerHaus requires a complete Snapchat Marketing API integration that allows dealership users to connect their Snapchat advertising accounts, select vehicles f...

HL-40606472

Social Media App for Community Events

Project Title: Community & Event Platform (Android & iOS) Project Description: I want to develop a modern mobile application similar to a social media platform...

HL-40606382

Node.js Backend Upgrade & Fixes

My site’s admin portal has stopped processing business logic after a recent host update. The full codebase is in hand, but it is running on an outdated Node.js...

HL-40606179

Long-Term WordPress Backend Developer

Работа полностью дистанционная, задачи приходят регулярно и я хочу наладить долгосрочное партнёрство с одним ответственным специалистом, а не с агентством. Глав...

HL-40606124

Car Wash Booking App Development

I need a mobile application that lets my customers book, track, and review our on-demand car wash service from a single, intuitive interface. Booking flow Users...

HL-40605867

SavTrax Finance App Development (React native/Node.js) -- 2

Development of SavTrax – Personal Finance Tracking & Saving Application (Flutter + Node.js) --- Project Overview: We are looking for a small development agency...

HL-40605731

Advanced Language Learning App Development

ARIA Learn — Complete Language Learning App Specification Product Vision ARIA Learn is a modern language learning platform designed to help users become fluent...

HL-40605661

NCERT Mobile App Development

Refrence app- NCERT solution in paly store & App Store. Developer-Kumar Gautam Company name- supercop I need a cross-platform mobile application that lets learn...

HL-40605434

Malware Fix by JavaScript & PHP Developer

Job Title Need an Experienced JavaScript & PHP Developer to Fix Website Redirect Malware (One-Time Project) Job Description I'm looking for an experienced JavaS...