About the role
We are looking for a Senior Software Engineer, Backend with experience building and operating high-stakes, transaction-heavy systems. You will work across payment infrastructure and platform services, where your engineering decisions will directly impact the reliability and correctness of merchant money flows
Responsibilities:
- Design and build backend services for payment infrastructure, including idempotency, retry queues, reconciliation flows, and crash-safe state management.
- Own systems in production, monitor services, respond to incidents, and continuously improve reliability.
- Partner with product and business stakeholders to translate requirements into well-scoped engineering solutions and drive projects from design through production.
- Contribute to shared platform services used across the organisation.
- Drive system design reviews and help raise the overall engineering bar.
- Proactively identify complex engineering challenges such as race conditions, ordering guarantees, and blast-radius risks before they reach production.
- Instrument services for observability and own alerting for the systems you build.
- Communicate technical risks, trade-offs, and timelines clearly with both technical and non-technical stakeholders.
- Use AI tools to accelerate development while critically validating and taking ownership of the output.
- Mentor engineers and build reusable engineering patterns that improve the team's overall productivity.
Requirements:
- 4-6+ years of professional backend software engineering experience.
- Bachelor's degree in Computer Science, Engineering, or a related technical field.
- Strong proficiency in Java with Spring Boot or equivalent JVM-based backend frameworks.
- Strong understanding of system design fundamentals, including: Distributed transactions, Idempotency, Event-driven architecture, Caching, Fault tolerance.
- Hands-on experience working with relational databases and message queues in production.
- Working knowledge of cloud infrastructure, preferably AWS.
- Experience with container-based deployments.
- Ability to instrument services and own observability and alerting.
- Excellent written and verbal communication skills, with the ability to clearly articulate technical trade-offs and risks.
Strong Signals:
Candidates with the following experience will stand out:
- Experience in FinTech, payments, or transaction-heavy platforms, particularly where correctness is critical.
- Experience designing idempotency, retry mechanisms, and reconciliation flows from scratch.
- Evidence of proactive engineering thinking through: Design documents, RFCs, Post-mortems, Open-source contributions.