Senior Software Engineer

Eesti Energia

Estonia · Full-time · Mid-Senior

Want to work in a field that’s anything but ordinary?

Energy trading systems are real-time, market-critical platforms where correctness, latency, and reliability directly impact trading outcomes across the Baltics.

We are looking for a Senior Software Engineer to join the Zeus Team and help build and evolve the systems behind energy trading and flexibility services. You will work on high-impact distributed systems, contribute to architecture decisions, and take ownership of production-grade software in a complex and fast-moving domain.

Your contribution to this goal is to:

actively shape the technical direction through design discussions and implementation;
collaborate with Product Owners, Engineering Managers, and Solution Architects to shape the future of our energy trading and flexibility systems;
design and implement robust, secure, and maintainable software solutions for real-time data flows and market integrations;
mentor and support team members while fostering knowledge sharing and engineering best practices;
drive improvements in performance, reliability, and deployment processes;
contribute hands-on to development, code reviews, and system design.

With us, you can:

develop and shape mission-critical systems at the heart of Enefit’s energy trading and flexibility ecosystem;
work in a complex, high-impact domain that directly contributes to a sustainable energy future;
work with modern technologies and enjoy creative freedom in solution design;
be part of a supportive, learning-driven culture alongside talented colleagues;
enjoy 5 additional vacation days after your first year;
choose a well-being package that suits you, including health insurance and/or Stebby services.

You are a great match if you have:

a strong background in software engineering, architecture, or DevOps;
a strong experience with C#/.NET Core (or other languages, with a willingness to switch to C#);
experience with frontend frameworks (For example: React, Angular, Vue);
strong experience with relational databases such as PostgreSQL or MSSQL;
a solid understanding of event-driven systems and streaming platforms, including Kafka and WebSockets;
familiarity with microservices, containerization (Docker, Kubernetes), and CI/CD pipelines;
a proactive and collaborative mindset, with the ability to translate business needs into technical solutions;
a strong cultural fit: you value clarity, collaboration, curiosity, and mentorship, enjoy helping teams grow, and thrive in a learning-focused environment;
willingness to take full operational ownership, including system monitoring, reliability, incident management, and participation in a 24/7 on-call rotation;
bonus: an understanding of data lakehouse architectures (e.g., Apache Iceberg, Starburst, and medallion architecture).

Additional Details

Location: Tallinn or Tartu (partial remote work opportunity, per agreement with manager)

Apply now or 31.05.2025 at latest.

Recruitment specialist Kaisa Kalnin will answer your questions about the hiring process via email ( [email protected]).

Key Skills

Ranked by relevance

containerization microservices kubernetes postgresql angular docker apache react kafka cicd

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Country Guide

Estonia

Digital-first ecosystem and startup culture

Posted: May 14, 2026
Type: Full-time
Level: Mid-Senior
Location: Tallinn
Company: Eesti Energia

Industries

Internet Publishing Software Development Electric Power Transmission Control Distribution