Job Description We are looking for an experienced Staff Engineer (Backend, Capital Markets) to join a small, highly technical engineering team building modern technology for the capital markets . The team is building a cloud native platform from scratch to modernise infrastructure within the securities finance market . The platform supports complex workflows including pre-trade processes, trade matching, trade lifecycle management, reporting and connectivity with financial institutions and external market infrastructure. This is a handson Staff Engineer role with significant technical ownership. You will work closely with Product, Engineering and Business teams and take responsibility for backend projects from initial concept through architecture, implementation and production. What you'll be doing Design, build and evolve reliable backend systems Take ownership of projects from inception through production Make architectural decisions and develop simple, maintainable solutions Work on complex distributed systems and integrations Build systems with high availability and very low tolerance for errors Work closely with Product, Engineering and Business stakeholders Help shape the technical direction of a rapidly growing platform Anticipate technical and customer requirements as the platform scales What we're looking for 10+ years of professional software engineering experience Strong backend engineering experience Proven experience working in a startup or scale-up environment Experience in a startup that has gone through a significant growth phase is particularly valuable Experience owning and delivering complex backend projects Strong understanding of software architecture, distributed systems and scalable applications Excellent communication skills and the ability to work effectively across technical and business teams A strong eye for quality, reliability, detail and maintainability A pragmatic, hands-on approach to solving complex problems Startup experience is a genuine requirement for this position. Candidates whose experience is exclusively within large corporate environments will not be considered. Experience with the following is highly relevant: Go Google Cloud / GCP Kubernetes Distributed systems Asynchronous communication Databases and message queues High-availability systems External APIs and integrations Experience with capital markets or financial services is a strong advantage, particularly institutional trading, exchanges, trading venues, securities finance, clearing and settlement, execution systems or related infrastructure. This position is based in Amsterdam and operates on a hybrid basis, with the team currently working together in the office two days per week, one optional office day and the remaining days generally remote. Please note: You must already be living and working in the Netherlands Relocation from another country is not available This is not a fully remote position Visa sponsorship is generally not possible Candidates must be able to work from the Netherlands without requiring relocation support You will join a small and highly experienced engineering team where you can have a direct impact on the architecture and development of a growing capital-markets platform. The role offers substantial technical ownership, exposure to complex financial-market infrastructure and the opportunity to work on systems where engineering quality, reliability and scalability genuinely matter .