Principal Engineer - EMS, Marousi, Hybrid (3-2)

Our client is a global software company operating in the renewable energy sector, delivering software platforms for utility-scale solar, wind, and battery storage operators across multiple international markets. The role exists due to continued investment in the platform’s energy management and dispatch capabilities supporting renewable and storage assets.

The Role

You’ll contribute to the design and implementation of backend services responsible for optimisation, dispatch planning, and real-time command execution across energy and storage systems. Alongside backend engineering, you’ll also contribute to operator-facing interfaces that expose scheduling, override, and audit functionality used in production operations.

Within your first six months, you’ll be expected to contribute to the reliability and performance of real-time control flows, enhance integration capabilities with external operators and grid systems, and deliver improvements to operational tooling and monitoring across the energy management platform.

What You’ll Bring

• 8+ years of experience designing and operating production backend systems
• 3+ years of recent hands-on production experience with Go
• Strong experience building real-time, latency-sensitive, message-driven systems in sectors such as energy, industrial control, telecommunications, or financial trading
• Fluency with Apache Kafka, gRPC, and Protocol Buffers
• Practical experience contributing to React codebases for operational or customer-facing tooling
• Strong Kubernetes proficiency in production environments
• Fluency with AI-assisted engineering and agentic coding workflows
• Strong written and verbal communication skills in English

Nice to Have

• Knowledge of power-system operations, electricity markets, and ancillary services
• Familiarity with battery energy storage systems and operational asset management
• Exposure to industrial communication protocols such as IEC 61850, Modbus, or IEEE 1547

What’s in it for You

The role offers a salary commensurate with experience (€5000 - €6500) and the opportunity to work on real-time renewable energy and storage optimisation systems at global scale. It follows a hybrid working arrangement, with two days onsite and three days remote each week in Athens. Additional benefits include a monthly meal allowance, private health insurance, and an annual performance bonus.