Senior Software Engineer (Backend): Cards

BVNK

Contract type

Ongoing

Work mode

Hybrid · Hybrid (inferred: EU/NL where applicable)

Experience

Senior · 5+ years

Job description

Design and implement card platform features end-to-end, from tokenization and sensitive card data handling to transaction enrichment and settlement workflows
Build and maintain integrations with card issuers and payment processors
Architect systems spanning multiple services, ensuring scalability, security, and PCI compliance
Own features and projects from inception to completion, breaking down complex domains into deliverable work items
Drive cross-team technical initiatives around shared libraries, patterns, and infrastructure
Actively review code across the team, providing constructive and in-depth feedback
Contribute to engineering culture by mentoring teammates and setting quality standards
Company mission
To build a seamless card issuing and transaction platform that bridges crypto and fiat, enabling merchants to offer instant access to funds through physical and virtual cards

Core technologies

JavaDockerKubernetes

Fair and competitive salary at every stage of growth
Flexible working hours, with hybrid working at its heart
A culture built on passionate, growth-minded people
A flexible approach to holiday
Opportunities to travel to offices around the world
An open and creative environment where you can help define the future of the company

5+ years experience as a Backend Engineer, preferably in FinTech or payments
Expertise in Java and Spring Boot
Experience building and maintaining APIs and services in a microservices architecture
Strong understanding of card payments, issuing, or transaction processing
Enthusiasm for adopting AI-assisted development tooling (e.g., Claude Code, AI code review agents)
Ability to self-direct work and scale from well-scoped tasks to multi-sprint initiatives
Excellent problem-solving skills, comfortable working independently or collaboratively across squads
Experience with containerisation and orchestration technologies including Docker and Kubernetes
Experience with code review as a tool for mentoring and raising team-wide standards
Good written and verbal communication skills
Familiarity with crypto/fiat payment rails is a plus
Open to participating in an out-of-hours on-call rota
Java, Spring Boot, Docker, Kubernetes
Java
Docker
Kubernetes