This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Staff Full Stack Engineer - Sell Side Engine based in Spain.

This is a highly hands-on Staff Engineer role focused on solving complex technical problems within a rapidly scaling energy technology environment.
You will join a small, high-impact product squad responsible for rebuilding the systems that support renewable energy origination, contracting, onboarding, and growth.
The role combines deep backend and systems engineering with the flexibility to contribute to frontend development when needed.
You will make architecture-level decisions across integration-heavy systems, working with pricing, data, billing, and risk platforms.
A major focus will be turning manual and error-prone commercial processes into scalable, automated products that can support new business categories.
You will work with significant autonomy, operating within ambiguity and taking complex problems from definition through production delivery.




This is an opportunity for an exceptional engineer to directly influence critical market infrastructure while helping build the technology behind a more transparent and efficient energy ecosystem.

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Accountabilities:

• Own architecture-level decisions for complex, integration-heavy systems, clearly defining system boundaries, contracts, dependencies, and failure modes.

• Design and build the technical foundations connecting new-product initiatives with pricing, settlement, data, billing, and other core platforms.

• Take commercially driven and sometimes ambiguous problems, define practical technical approaches, and turn them into shippable plans within the squad's strategic direction.

• Help develop and launch new product categories, contributing to the technical work required to bring new offerings from concept through production and qualified commercial pipeline.

• Automate and productise tendering, pricing, contract

📌 Staff Full Stack Engineer (España)
🏢 Jobgether
📍 España