Vacancy

Senior Software Engineer

Job category: Technology
Office: Amsterdam, Netherlands
Level: Senior
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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.

Your success story starts here…

TEAM AND ROLE:

STX is building the digital infrastructure that powers global decarbonization.  

As a Senior Software Engineer, you’ll design and build the systems that run the complete trading lifecycle – from origination and risk management through trading, settlement, and reporting – forming the backbone of how STX operates at scale. 

This is not a maintenance role. It’s an opportunity to work on mission-critical platforms that connect financial performance with environmental impact – where technology, trading, and purpose converge. 

You’ll join a growing team of engineers, product leaders, and domain experts, modernizing our architecture, simplifying complexity, and building the digital foundations that drive STX’s next phase of growth. 

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.

KEY REQUIREMENTS

  • 6-8+ years of experience building scalable, reliable software, ideally in fintech, trading platforms, or data-intensive systems.
  • Proficiency in TypeScript with strong backend experience in Python or Node.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.
  • Living in the Netherlands 

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. For further questions, please contact the Recruitment department at recruitment@stxgroup.com.

 

#LI-MC1 #LI-Hybrid

 

Compensation and benefits

  • Competitive remuneration package
  • Pension scheme contributions
  • Strong focus on personal and professional development
  • Sport and training opportunities

Diversity Statement

We encourage and welcome applications from candidates of diverse backgrounds, experiences, and perspectives to enhance our team and contribute to a more inclusive work environment. Diversity, inclusion, and belonging are more than just concepts. They are part of our everyday work culture, ensuring employees feel welcomed and build meaningful connections.

At STX, we ask applicants to think holistically about roles. If the role sounds exciting and a great fit for you but some of the criteria or required experience doesn’t 100% line up, we still encourage you to apply!

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Our Recruitment Process

Let’s Kick It Off
We’ll review your CV to see where your experience and ambition meet our opportunity.

Connect & Explore
You’ll complete an online assessment, followed by a call with one of our recruiters. This is your chance to ask questions and get a real sense of the role, the team, and what it’s like to work at STX.

Show Us Your Potential
In two interview rounds, we’ll dive deeper into your skills, drive, and potential, including a business case if relevant.

Make It Official
You’re in. We’ll make you an offer and set you up for success. From here, we’ll grow together.

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