It’s no wonder we can go further, faster together. We’re a team of 450+ professionals from 50+ nationalities, all commercially driven, entrepreneurial and ready to turn potential into progress. Not just for us, but for the world too.

At STX, we’re focused on so much more than making money. We’re here to make a profit with a purpose. Because for us, nothing’s more important than being able to trade in environmental commodities and create the most effective decarbonization strategies for our clients.

Join us and together we can change the world – one trade at a time.

ABOUT THE TEAM

You will be part of the Digital Engineering domain that owns the Climate Tech and Originate platforms, which power all supply‑ and demand‑side touchpoints at STX. Our domain’s mission is to make every counterparty interaction fully self‑serve and delightful by removing operational burden and unlocking the next phase of STX’s growth. We design and deliver systems where complex workflows feel simple, intuitive, and reliable; so counterparties experience STX as the trusted default for trading and originating with.

KEY RESPONSIBILITIES

Design and develop scalable services supporting the full trading lifecycle, from front-office origination to back-office settlement and reconciliation. Create clean APIs, modular architectures, and data pipelines to ensure clarity, performance, and reliability across the digital platform. Translate complex business processes into maintainable, production-ready software that scales with organizational needs.

Contribute to technical excellence by writing high-quality, well-tested code and participating in design/code reviews to raise team standards. Collaborate cross-functionally with Trading, Risk, Finance, Operations, and Data teams to deliver robust, well-architected solutions. Mentor and grow engineering talent, sharing best practices, modeling craftsmanship, and fostering a culture of clarity and accountability.

REQUIREMENTS

6-8+ years of experience building scalable, reliable software, ideally in fintech, trading platforms, or data-intensive systems. js, and hands-on experience with AWS, serverless, and event-driven architectures. Practical experience with infrastructure-as-code tools (CDK/Terraform), Kubernetes, and cloud-native design patterns.

Strong system design and engineering fundamentals, including clean architecture, testing, and production-grade software development. Excellent collaboration and communication skills, able to bridge technical and business perspectives and give/receive constructive feedback. Curiosity and growth mindset, staying up-to-date with emerging technologies like LLM-powered automation, serverless systems, and data-centric design.

COMPENSATION

AND

BENEFITS

Competitive remuneration package Pension scheme contributions Strong focus on personal and professional development Sport and training opportunities GET IN TOUCH Are you ready to embark on a journey with us? Please submit your application for this job by clicking on the “apply” button. com .

Senior Software Engineer