Senior Software Development Engineer

2 weeks ago

New Belgrade, Central Serbia Wärtsilä Full time €90,000 - €120,000 per year

If you're passionate about making a real impact, Wärtsilä Voyage R&D is the place for you. Our team is dedicated to managing multiple core services, including maintenance of past achievements, while continuously innovating by developing new ones. We actively refine business processes to ensure ongoing improvement and excellence, leveraging Agile and SAFe practices to enhance our efficiency and collaboration.Job Description:

We are looking for a
Senior Software Development Engineer
to join our team working for a better future. The location for this position is in
Belgrade, Serbia.
In our team you will:
Develop cloud based services and cover you code with tests

Create system architecture and documentation

Co-own and support our team's portfolio

Plan the future of the product by participating the discovery activities

Optimization of performance, efficiency and cost of the solution

Keep our codebase up to date

Contribute to internal processes, for example knowledge-sharing sessions, improving the developer experience

Collaborate with other teams, experts and stakeholders

Main requirements:
Degree in Computer Science, Engineering, Physics, Math or relevant*

6+ years of working experience in commercial web development

Understanding the principles of distributed systems development

Knowledge and practice with OOP, SOLID, KISS and Boy Scout Rule

Experience with containerization

Fluent English

We develop using:
Platform: .Net 6 - 10, C#, ASP.NET MVC/WEB API 2, .Net Framework

Auth: Entra ID, OAuth 2.0, Certificates

Messaging: Service Bus, EventHub

Secure storage: KeyVault, 1Password

Monitoring: Application Insights Graylog, DataDog

Test: NUnit, NSubstitute, AutoFixture

Infrastructure: GitHub, Nginx, Traefik, Docker, K8s

Storage: MS SQL Server, CosmosDB, Azure Storage

Last application date: 11/09/2025

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.

This is Wärtsilä
Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on

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