Senior Full-Stack Developer

Ljubljana, Greentube SI doo

Published: 2026-05-29

As a Senior Full Stack Developer, you play a key role in building and evolving reliable, scalable, and maintainable software solutions. The role combines hands-on development with active involvement in technical decisions, collaboration across the team and continuous improvement of both the system and the way we work.

Your tasks

Software Development

Strong experience in full stack development with .NET (Core / .NET 8+) and modern frontend applications with Angular (TypeScript, HTML, CSS)
Contribute to scalable solutions across services, integrations, databases including different communication patterns such as REST APIs, messaging and asynchronous processing
Work with data models and persistence using Entity Framework / EF Core and relational databases
Apply software design principles, patterns and clean architecture to deliver testable, and maintainable code, while actively contributing to code quality through reviews and engineering best practices
Collaborate with Product Owners and Tech leads to refine requirements and translate them into working solutions
Understanding software development life cycles and methodologies of work (e.g. Agile, Waterfall)

System Quality & Operations

Troubleshoot, debug and improve production systems with a focus on stability and performance
Contribute to CI/CD pipelines, release processes and DevOps practices
Support observability through logging, monitoring using tools such as Grafana, Prometheus or similar monitoring platforms
Contribute to improving performance, scalability and overall system reliability

Your profile

Strong experience in full stack development using technologies such as .NET (Core / .NET 8+), Angular, relational databases (e.g. PostgreSQL, and modern development and DevOps practices
Hands-on experience with Entity Framework / EF Core, including data modeling, migrations and working with relational database designs in production environments
Solid understanding of APIs, distributed systems and service-based architecture
Good understanding of software design principles, patterns and clean architecture
Solid understanding of software delivery practices, including version control workflows, CI/CD pipelines, branching strategies, release management, QA processes and multi-environment deployments
Structured problem-solving approach and strong sense of ownership for delivered solutions
Ability to prioritize effectively and work in a fast-paced environment
Comfortable collaborating within the team and across stakeholders
Clear and pragmatic communication style
Fluent in English

Nice to have

Experience with containerization and cloud-native setups (Docker, Kubernetes, Helm)
Familiarity with API gateways, messaging systems, gRPC or asynchronous architecture
Experience with performance tuning, query optimization and database scalability
Exposure to high-availability or high-traffic systems (e.g. gaming, betting, fintech)

Our offer

We believe great work happens when people feel supported, inspired, and balanced. By investing in our employees, we create an environment where everyone can thrive and reach their full potential.

Flexible working hours and a hybrid model that fit your lifestyle, backed by a strong culture of work-life balance
A dedicated training budget to explore new skills, deepen your expertise, and shape your career journey
Opportunity to lead and contribute to exciting and impactful projects.

About Greentube SI

Greentube SI is a subsidiary of Greentube GmbH, which is a leading developer and supplier of iGaming solutions. Greentube is a wholly-owned subsidiary of the NOVOMATIC Group, one of the biggest producers and operators of gaming technologies and one of the largest integrated gaming companies in the world. Greentube’s industry-leading omni-channel technology allows the convergence of online, mobile, and land-based games. The well-diversified product portfolio includes Classic Slots, Table Games, Live Dealer Gaming, AWP Reloaded Slots, Server-Based Gaming, Social Casino Gaming, Bingo, and more.

Greentube SI d.o.o
Šmartinska cesta 56, 1000 Ljubljana
www.greentube.com

Olivera Cikuša
HR specialist