Java / Backend Developer - FinTech

Fiat Republic is a London-based remote-friendly fintech dedicated to bringing mainstream banking to the world of digital assets. Founded in 2021, the company has quickly established itself as a leading provider of banking and payment infrastructure for cryptocurrency companies.

Fiat Republic's mission is to bridge the gap between traditional finance and digital assets by providing cryptocurrency businesses with a single API to create bank accounts in multiple fiat currencies, access local bank payment rails, and manage FX and liquidity operations. We are a highly regulated business, with electronic money and money service business licenses in the UK, EU, US and Canada. We also have a strong focus on AML, regulatory compliance, and security, ensuring that our clients can operate their fiat flows sustainably, safely and securely.

We are headquartered in London, with a presence in the Netherlands, Poland, Turkey and Canada. Fiat Republic is backed by top-tier venture capital firms such as Speedinvest, Credo Ventures, Seedcamp, Fabric Ventures, Kraken Ventures, Arca, and Inovo Ventures. By providing crypto businesses with a simple and secure way to bank and process fiat payments, we are helping to drive the adoption of digital assets and making it easier for people to access the benefits of cryptocurrency.

We are also looking to expand our team and hire talented individuals who are passionate about banking, payments, cryptocurrency, and working in a fast-paced start-up environment.

Solve challenging technical and payment-related problems by translating product objectives into clear, performant backend architecture and designs using Kotlin.

System Design & Optimization: Continually optimize services for performance, latency, and reliability, while improving engineering standards, tooling, and processes across the team.

Documentation & Design: Proactively define and document technical requirements and architectural designs in JIRA, ensuring clear communication with both technical and non-technical stakeholders.

Primary Language Expertise: 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.

Scalable Infrastructure: Demonstrated experience designing and building scalable Cloud infrastructure capable of reliably handling millions of transactions per month (TPS) using Kubernetes.

Database & Persistence: Strong background in relational databases (e.g., PostgreSQL) and experience modeling complex data schemas for financial and transactional systems.

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.

Version Control: Quality Assurance & Testing: 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.

Meaningful stock options in a rapidly growing company alongside a very competitive salary

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.

~ Fiat Republic is a firm believer in meritocracy and an equal opportunity employer committed to selecting, developing, and rewarding employees based solely on their qualifications, performance, and ability to do the job.