Staff Backend Engineer setting strategy and building scalable Identity systems for Affirm’s international buy - now - pay - later expansion. Leading backend architecture, reliability, operations, and engineering standards.
About the role
- Backend Engineer solving technical and payment-related problems using Kotlin at Fiat Republic. Collaborating with cross-functional teams to ensure precise alignment on feature requirements.
Responsibilities
- Solve challenging technical and payment-related problems by translating product objectives into clear, performant backend architecture and designs using Kotlin
- Collaborate closely with Product, Delivery, and Engineering teams to ensure precise alignment on requirements, scope, and timelines for major feature rollouts
- Continually optimize services for performance, latency, and reliability, while improving engineering standards, tooling, and processes across the team
- Debug, troubleshoot, and resolve critical production issues across various services and multiple levels of the stack with a strong sense of urgency and ownership
- Proactively define and document technical requirements and architectural designs in JIRA, ensuring clear communication with both technical and non-technical stakeholders.
Requirements
- Expert proficiency in writing server-side Kotlin code for building highly scalable, performant, and reliable microservices
- Similar experience in Java or Scala will also be considered
- Demonstrated experience designing and building scalable Cloud infrastructure capable of reliably handling millions of transactions per month (TPS) using Kubernetes
- Strong background in relational databases (e.g., PostgreSQL) and experience modeling complex data schemas for financial and transactional systems
- Proven ability to identify, define, and document robust, secure, and well-structured internal and external REST/gRPC APIs
- Experience with Kafka or other message broker systems is preferred, though not required
- Knowledge and hands-on experience with various architecture patterns such as Event Sourcing, CQRS (Command Query Responsibility Segregation), CDC (Change Data Capture), Transactional Outbox and others
- Experience with banking (especially realtime payments) and financial services is a strong preference, though not mandatory
- Deep experience with Git and GitHub/GitLab, including standard branching models and collaborative code review processes
- Rigorous approach to writing maintainable, well-documented code, including advanced unit and integration testing to ensure superior code quality
- Must demonstrate a strong sense of ownership, a customer-first mindset, and commitment to superior code quality and engineering excellence.
Benefits
- Meaningful stock options in a rapidly growing company alongside a very competitive salary
- Opportunity to get in on the ground floor of a 1st-to-market, fast-growing regulated fintech backed by tier-1 VCs, working with an incredible team of payment experts
- Empowerment to take ownership at all levels and make high-impact decisions
- Fun, collaborative and meritocratic culture with zero tolerance for politics
- Work in a truly multi-national team (offices in Toronto, London, Amsterdam and Krakow, with more coming soon).
- Hybrid working conditions - minimum 1 day per week from the office where the role is based
- Also the option to work from any of our other hubs for up to 6 weeks.
- Company retreats to celebrate successes and spend time together in person
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