Senior Software Engineer

The role

You'll build the backend systems that carry client money, portfolios and market data services that have to be correct, fast and auditable. This is an early-stage team, so you'll own features end to end: design, build, ship, monitor. No handoffs, no ticket queue.

What you'll do

• Design and build backend services and APIs in Python and Go
• Model and optimise data layers for portfolio, transaction and market data
• Build event-driven pipelines for real-time feeds, reconciliation and reporting
• Integrate third-party systems — custodians, RTAs, exchanges, KYC and payment providers
• Own reliability: testing, observability, alerting and on-call for what you ship
• Write clean, reviewed, well-tested code and raise the bar in design discussions

What we're looking for

• 3–6 years building production backend systems
• Strong in Python or Go, with genuine willingness to work across both
• Solid grounding in system design, data structures and distributed systems
• REST and gRPC API design; microservices in production
• PostgreSQL or MySQL with real query and schema optimisation experience
• Kafka, RabbitMQ or similar message queues; Redis for caching
• AWS, Docker, Kubernetes, CI/CD
• Comfortable with ambiguity and early-stage ownership

Preferred

• Fintech, wealthtech, brokerage or capital markets backend experience
• Exposure to market data feeds, order management, portfolio accounting or reconciliation
• Experience with low-latency, high-throughput systems
• Understanding of data security and regulatory-grade audit trails