Senior Full Stack .NET Developer

Us3 Consulting — Poland · Posted ~1 hour ago

Senior Full-time

Skills

C# .NET ASP.NET Core React TypeScript SQL NoSQL databases REST APIs software development cloud services NoSQL Azure

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Summary ✨ AI‑Generated

A senior engineering role focused on designing and delivering complete digital solutions across multiple application layers. The ideal candidate has strong experience with modern backend and frontend technologies, database systems, and cloud-connected applications, and can independently drive features from concept to production.

Highlights

Opportunity to build end-to-end software solutions across backend, frontend, databases, and cloud services. The role offers ownership of complex features, technical problem solving, and involvement in improving software quality.

Description

Senior Full-Stack .NET Developer We’re looking for a Senior Full-Stack .NET Developer to deliver end-to-end business features across backend APIs, frontend applications, databases, and cloud-connected services. You’ll work across the full application stack, building robust solutions with C#, .NET, ASP.NET Core, React, TypeScript, SQL/NoSQL databases, and cloud services. This is a hands-on role suited to someone who can independently take complex features from design through to production. What you’ll do Design and implement backend APIs and business logic using C# and ASP.NET Core.Build and integrate frontend functionality using React and TypeScript.Work with SQL and NoSQL databases, including data modelling and query optimisation.Deliver complete features across backend, frontend, database, and integration layers.Troubleshoot and resolve production issues across multiple application layers.Contribute to code reviews, testing, and overall technical quality.Integrate with external systems and cloud services.Apply secure development practices, including secure API design and tenant-boundary awareness. Essential skills Strong C# and .NET development experience.Strong ASP.NET Core Web API experience.Solid React and TypeScript skills, with the ability to independently build and modify routine screens.Experience with SQL and/or NoSQL databases, with the ability to learn the other quickly.Understanding of cloud fundamentals.Strong debugging, problem-solving, and analytical skills.Good awareness of application security and common vulnerabilities.Ability to work independently on complex, end-to-end development tasks. Preferred skills MongoDB and Azure SQL experience.Experience with Azure App Services, Storage, Key Vault, and monitoring.Experience in financial, tax, compliance, or other regulated platforms.Experience supporting frontend modernisation in enterprise environments.Experience with Motif, design-system migration, or enterprise UI transitions.