(Senior) Backend Engineer — Trading & Asset Optimization

Our backend is Python-based: we run on AWS with Terraform, and build with FastAPI, Pydantic, and SQLAlchemy. Having worked in this stack is a nice bonus, but not a requirement.

Your First 90 Days

First 6 Weeks - Getting Oriented

• Get up to speed on the trading and asset-optimization systems, our Python/AWS stack (FastAPI, Pydantic, SQLAlchemy, Terraform), and how market and asset data flows through the platform
• Ship your first fixes and small improvements to get familiar with the codebase, our review process, and how we operate in production
• Build relationships with product, data science, and quantitative trading colleagues to understand priorities and how decisions get made

By Month 3 - Building Momentum

• Take ownership of a meaningful initiative end-to-end: gather requirements, shape the approach, and roll it out iteratively
• Contribute architectural input on at least one active design decision in the codebase
• Help raise the bar on quality and observability by identifying and addressing a gap in how we reason about correctness in production

You might be a good fit if:

• You've built complex, data-intensive systems and can point to projects you're proud of.
• You've owned a large initiative end-to-end. From fuzzy requirements through an iterative rollout to production - not just the code, but the outcome.
• You put the team first: you genuinely enjoy collaborating with people around you and you'd rather support the team than be the lone hero.
• You're comfortable making architectural decisions in an evolving codebase.
• You're drawn to hard, meaningful problems and want to help shape the next steps of an energy trading and asset-optimization platform.

Don't meet every single requirement? At trawa we are building a diverse, inclusive, and authentic workplace. If you are excited about this role but your background doesn't tick every box, apply anyway — you may be exactly the person we are looking for.

Bonus points

• Experience at the intersection of backend and data engineering - building scalable data pipelines, modeling data to streamline it, and enabling data exploration for other functions.
• Exposure to energy, trading, or other real-time, high-stakes domains.

Why Join Us

• Real impact - Join one of Europe's fastest-growing B2B energy platforms at a pivotal moment. Your work will directly support systems that help industrial companies cut costs and go green.
• Early ownership - We give team members responsibility from day one. You won't be shadowing - you'll be shipping.
• Mentorship that matters - Regular leadership sessions, cross-functional exposure, and engineers who are genuinely invested in your growth.
• Learning culture - Annual learning budget, dedicated development time, and a team that takes knowledge-sharing seriously.
• Inclusive by design - 15+ nationalities, family-friendly policies, and a genuine commitment to building a place where everyone can do their best work.
• Solid benefits - A competitive package covering wellbeing, learning, and team experiences.