Senior Software Engineer

Senior Software Engineer - Backend Architecture & AI Systems

About Greenely

Greenely is on a mission to make energy smarter, greener, and more accessible. We build technology that helps households understand, optimize, and reduce their energy usage - contributing to a more sustainable future.

Our products sit at the intersection of real-time data, consumer experience, and energy infrastructure. That means the engineering challenges we tackle are both complex and impactful.

The role

We’re looking for a Senior Software Engineer who thinks beyond tickets and implementations - someone who naturally leans into architecture, system design, and long-term technical direction.

This role is not about writing the most code. It’s about making the right technical decisions, shaping systems that scale, and guiding how we build - especially as we explore AI-driven and agentic systems within our platform.

You’ll work closely with product, data, and other engineers to design robust solutions where tradeoffs are real, constraints matter, and decisions have lasting impact.

What You’ll Do

• Own and drive architecture decisions across services and systems
• Design systems that are scalable, resilient, and cost-aware
• Act as a technical sounding board for engineers across teams
• Work hands-on when needed, but focus on direction over volume
• Evaluate and introduce patterns for AI agents and automation workflows
• Identify bottlenecks and proactively improve system performance and reliability
• Balance speed vs. quality, short-term delivery vs. long-term sustainability

Who You Are

You bring a senior mindset - you’ve seen things break, scaled systems, and understand why “best practices” are often context-dependent.

You Likely

• Have extensive experience designing and building systems in the cloud (AWS preferred)
• Understand caching strategies, databases, and distributed systems - and their tradeoffs
• Have worked with real production systems where performance, cost, and reliability mattered
• Have experienced failure modes (and learned from them)
• Think in systems, not just services
• Integrate AI agents and automation into your daily workflows to drive tangible impact on delivery
• Prefer ownership and agency over rigid processes

Technical depth we value

We don’t expect everything, but strong experience in several of:

• Cloud architecture & infrastructure design
• Designing and building robust distributed systems, distributed business transactions, and stateless compute pipelines
• Data storage (SQL/NoSQL), caching layers (Redis, etc.)
• Observability, monitoring, and debugging production systems
• Performance optimization and cost efficiency
• Event-driven systems and asynchronous workflows
• AI/ML systems and agent-based tooling
• Experience working with data and streaming pipelines, Kafka / Spark, etc

How You Work

• You take initiative and move problems forward without waiting for permission
• You ask “why” before jumping to solutions
• You’ve built enough to know that tradeoffs > perfection
• You communicate clearly with both engineers and non-engineers
• You care about building things that actually work - in production, over time

Why Greenely

• Work on real-world problems tied to energy, sustainability, and climate impact
• Be part of a team where engineering decisions matter
• High ownership, low bureaucracy
• A culture that values pragmatism, curiosity, and continuous improvement

If you’re the kind of engineer who naturally steps back to see the bigger picture - and then steps in to shape it - we’d like to talk.

Start date: Asap

Location: Stockholm, Sweden (on-site, with 1 day/week remote flexibility)

Please note that we do not accept applications via email as we protect your privacy. We kindly request that agencies refrain from contacting us regarding this position as we do all recruitment in-house. Thank you for your understanding.