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

Company DescriptionLeptes is a software development company serving EU clients. We build modern web apps primarily on .NET Core, SQL Server, React and Next.js.Engagement & LocationType: Long‑term freelance / contractor (hourly)Hours: 20–40 h/week (flexible) with 3–4h overlap with CETLocation: Remote (Turkey)Start: ASAPCompensation & InvoicingRate: 10 € / hour + KDV (TR VAT)Invoicing: Monthly (TR invoice required). Payments via bank transfer/Wise.What you’ll doDesign, develop and maintain .NET 6–9 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‑haves4+ years in .NET (C#, .NET 6–9, EF Core).3–4+ years building SPAs with React and 2+ years with TypeScript.Next.js experience (SSR, App Router, API routes; Auth.js/NextAuth).Solid SQL skills on MSSQL.Working English (B2+) for daily standups and async written comms.Nice to haveTesting (xUnit/Jest), performance profiling, caching.Azure AI (Open AI, AI Foundry)DevOps basics (Docker, CI/CD).Legacy front‑end exposure (jQuery/AJAX) for maintenance cases.Security/GDPR awareness.