Careers

Build things that matter with a team of specialists

We are a senior-heavy engineering team working on complex software for EU and US clients. Every engineer here is a professional, not a resource. Real projects, direct client contact, flat structure — no layers between you and the work.

Now hiring

.NET Backend Developer

Mid or Senior level  ·  Full-time  ·  Niš, Serbia  ·  Hybrid

.NET Core C# RESTful API Azure SQL Server Entity Framework Core Docker Microservices

We are looking for an experienced .NET backend developer to work on cloud-native APIs, integration layers, and domain-specific platforms for European and US clients — in industries like telecom, healthcare, and insurance. You will work directly within project teams alongside experienced architects, and in daily communication with clients.

This is not a maintenance role. We expect you to take ownership of your work — and in return you get real engineering challenges, direct client exposure, and a flat structure where your technical opinion carries weight.

What we're looking for
  • 3+ years (Mid) or 5+ years (Senior) of commercial .NET Core / C# experience
  • Solid understanding of REST API design and clean architecture principles
  • Strong SQL Server experience; Entity Framework Core is essential
  • Familiarity with Azure cloud services (DevOps, Service Bus, Functions)
  • Good written and spoken English — daily client communication
  • University degree in CS or software engineering (preferred)
Nice to have

Docker, CI/CD pipelines, microservices / event-driven architecture, MongoDB or other NoSQL, experience in healthcare or telecom domains.

What we offer
  • Projects for EU and US clients — telecom, healthcare, insurance, medical devices
  • Negotiable salary that strongly depends on the applicant's experience, talent, knowledge velocity, and working and communication skills
  • Senior team — you will work alongside experienced engineers and architects
  • Flat structure — direct access to architects and decision-makers, no bureaucracy
  • Hybrid work arrangement, flexible schedule
  • Professional development — conferences, courses, certifications
  • No micromanagement — you own your work
How to apply

Send your CV to office@smartnet.rs with the subject Application — .NET Backend Developer. Include any relevant projects, GitHub profile, or a link to your work if available. We review every application and reply within 5 business days.

Process: CV review → technical interview (remote) → team fit conversation

Send CV →
Also accepting applications

More areas we're growing in

These roles are not yet formally advertised but we review CVs as they arrive. If you have the right background, reach out — we'd rather build a relationship early than miss a great engineer.

Embedded C/C++ Developer

Mid / Senior

Firmware and embedded systems for industrial and medical devices. C and C++, real-time systems, close-to-hardware development. We work with laboratory instruments, automation, and IoT connected devices.

Express interest →

Angular Frontend Developer

Mid / Senior

Responsive web applications alongside .NET backend teams for European and US enterprise clients. Angular, TypeScript — working on healthcare, insurance, and telecom products with real production users.

Express interest →

Mobile App Developer

Mid / Senior

Flutter or native (Swift / Kotlin) — cross-platform and native mobile development for healthcare and enterprise applications shipped to EU and US markets.

Express interest →
Don't see your role?

If you are a senior engineer with a strong background in any of our domains — backend, embedded, AI integration, QA, DevOps — send us a message. We review open applications on an ongoing basis and reach out when the right project match comes along.

Ready to apply?

Send your CV directly to Saša Tančev, CEO · office@smartnet.rs · +381 63 149 4848

Send CV →