Backend Engineer; Kotlin​/Java

Position: Backend Engineer (Kotlin/Java)
Overview  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 are also an issuer of MiCAR compliant stable coins, with the distinction of being the first EMI in Europe with custody privileges. As such, we are perfectly placed to bridge the gap between trad

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The Fiat Republic platform is built with a developer-first ethos, making it easy for crypto platforms to integrate with our services and start processing fiat payments. 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.
Fiat Republic is a diverse team of outstanding individuals with a wide range of backgrounds and experiences. We are headquartered in London, with a presence in the Netherlands, Poland, Turkey and Canada. We are committed to providing our employees with a fun and thriving work environment, offering rapid skills development and the opportunity to learn about the payments and crypto industries.
Fiat Republic is backed by top-tier venture capital firms such as Speed invest, Credo Ventures, Seedcamp, Fabric Ventures, Kraken Ventures, Arca, and Inovo Ventures. We are also alumni of the Softbank Emerge Accelerator program.
Fiat Republic is making a significant impact on the cryptocurrency industry. 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.
With the increasingly positive tailwinds in the cryptocurrency industry, Fiat Republic is poised for continued stellar growth. We are constantly expanding our platform and adding new features to meet the needs of our clients. 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.
About the Role   Problem Solving & Feature Delivery:
Solve challenging technical and payment-related problems by translating product objectives into clear, performant backend architecture and designs using Kotlin.
Product & Cross-Functional Alignment:
Collaborate closely with Product, Delivery, and Engineering teams to ensure precise alignment on requirements, scope, and timelines for major feature rollouts.
System Design & Optimization:
Continually optimize services for performance, latency, and reliability, while improving engineering standards, tooling, and processes across the team.
Production Ownership:
Debug, troubleshoot, and resolve critical production issues across various services and multiple levels of the stack with a strong sense of urgency and ownership.
Documentation & Design:
Proactively define and document technical requirements and architectural designs in JIRA, ensuring clear communication with both technical and non-technical stakeholders.
Skills and Experience   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.
GCP experience preferred though not mandatory.
Database & Persistence:
Strong background in relational databases (e.g., Postgre

SQL) and experience modeling complex data schemas for financial and transactional systems.
API…