Freelance (Hourly) Full‑stack Developer (.NET Core + React.js)

Company Description
Leptes is a software development company serving EU clients. We build modern web apps primarily on .NET Core, SQL Server, React and Next.js.
Engagement & Location
Type: Long‑term freelance / contractor (hourly)
Hours: 30–40 h/week (flexible) with 3–4h overlap with CET
Location: Remote (Turkey)
Start: ASAP
Compensation & Invoicing
Rate: Hourly Rate will be applied including VAT.
Invoicing: Monthly (TR invoice required). Payments via bank transfer.
What you’ll do
Design, develop and maintain .NET 6–10 backend services and REST APIs.
Build responsive UI with React (Hooks + Redux) and TypeScript; contribute to Next.js features (SSR/App Router, API routes, Auth.js/NextAuth).
Work with Entity Framework Core and SQL Server (schema design, queries, tuning).
Write clean, testable code; participate in code reviews and follow Git/CI/CD practices.
Collaborate with PMs/designers, refine requirements, estimate tasks and deliver iteratively.
Must‑haves
4+ years work experience as full-stack development
4+ years in .NET (C#, .NET 6–9, EF Core, .Net MVC).
2–4+ years building SPAs with React.js and 2+ years with TypeScript.
Azure development environment (DevOps, Entra, BlobStorage, etc.)
Solid SQL skills on MSSQL.
Working English (B2+) for daily standups and async written communications
Must be located in Türkiye
Candidates must be able to issue invoices for their work.
Candidates must attend to daily meetings with the Customer
Nice to have
Experience with testing (xUnit/Jest), performance profiling, and caching
Next.js experience (SSR, App Router, API routes; Auth.js/NextAuth).
Knowledge of Azure AI (Open AI, AI Foundry)
DevOps basics (Docker, CI/CD).
Legacy front‑end exposure (jQuery/AJAX) for maintenance cases.
Security/GDPR awareness.
Requirements
4+ years of work experience as a full-stack developer
4+ years of work experience with C#
2+ years of work experience with React.js
Candidates must be able to issue invoices monthly

Work arrangement
Yes