Tech Lead (Backend): Billing & Fees

As a Tech Lead for Billing & Fees at BVNK, you'll shape the technical direction and delivery of the billing platform that sits at the heart of how BVNK monetises its stablecoin-native financial services. Today, much of this process relies on manual workflows and spreadsheets. You'll lead the design and development of automated, scalable infrastructure to support increasingly complex commercial agreements, growing transaction volumes, and enterprise-grade financial operations across BVNK's global platform.

What you'll do

• Own the technical direction of Billing & Fees by defining and driving the architecture, technical strategy and engineering roadmap for billing services, ensuring solutions support BVNK's evolving commercial models, transaction volumes and operational requirements.
• Lead the development of scalable billing infrastructure, architecting and building services responsible for fee policy configuration, fee calculation, invoice generation, billing adjustments and reconciliation, replacing manual processes with automated, reliable workflows.
• Drive end-to-end billing automation by designing robust data pipelines and integrations connecting systems such as Snowflake, Salesforce, Ledger and internal financial services, ensuring accurate data flows from transaction processing through to invoicing and reporting.
• Ensure financial accuracy and auditability by establishing engineering patterns that support financial correctness, including idempotency, traceability, reconciliation, exception handling and comprehensive audit trails.
• Lead architectural design and technical decisions by driving technical design submissions, architecture reviews and service design, applying domain-driven design, hexagonal architecture and event-driven patterns to build well-defined, maintainable services.
• Provide hands-on technical leadership by remaining actively involved in designing, building and reviewing production code, mentoring engineers, providing technical guidance and raising engineering standards across the squad.
• Collaborate across engineering and business domains, partnering with Product, Finance, Commercial, Back Office, Ledger, Digital Assets and Fiat teams to translate complex requirements into clear technical solutions.
• Own reliability and operational excellence by establishing strong standards for observability, monitoring, performance and incident response, guiding the team in managing production workloads and service recovery.
• Drive engineering quality and delivery by setting expectations for testing, CI/CD, documentation and technical debt management, ensuring high-quality solutions while balancing speed, maintainability and long-term platform health.

What you bring

• 7+ years of backend software engineering experience with strong hands-on expertise in Java/Kotlin and Spring Boot, including experience leading technical initiatives or providing technical leadership to other engineers.
• Proven experience designing and delivering complex, distributed, production-grade systems, with a strong understanding of microservices, event-driven architectures such as Kafka and SQS, relational databases such as MySQL and PostgreSQL, and caching technologies such as Redis.
• Experience working on financially sensitive systems such as billing, invoicing, payments, ledger, fee calculation or reconciliation platforms, where accuracy, consistency, auditability and reliability are critical.
• Strong architectural expertise, including domain-driven design, hexagonal architecture, service decomposition, bounded contexts and asynchronous communication patterns.
• Demonstrated ability to own technical architecture and drive engineering decisions, balancing scalability, reliability, delivery timelines and business requirements.
• Strong API design experience, including building and evolving RESTful APIs, managing backwards compatibility, and creating reliable integration patterns across internal and external systems.
• Solid understanding of financial data integrity, including transactional consistency, idempotency, error recovery and reconciliation in distributed environments.
• Experience mentoring and guiding engineers through technical design, code reviews, problem-solving and complex delivery challenges.
• A strong production ownership mindset, with experience operating business-critical systems, participating in on-call rotations, managing incidents and using observability tooling such as Grafana, Prometheus and Micrometer.
• Familiarity with CI/CD pipelines, infrastructure-as-code, automated testing and modern software delivery practices.
• Strong communication and stakeholder management skills, with the ability to work effectively across Engineering, Product, Finance and Commercial teams in a distributed, remote-first environment.
• Comfortable being both a hands-on engineer and a technical leader, taking ownership of challenging problems while enabling others to deliver successfully.

What we offer

• Competitive salary: €85,000-€115,000 EUR (Bulgaria), €95,000-€120,000 EUR (Spain), or 480,000-550,000 PLN (Poland), based on location and experience
• Flexible working hours with hybrid working at its heart
• Flexible approach to holiday
• Opportunities to travel to BVNK offices around the world

About BVNK

BVNK, founded in 2021, builds stablecoin-native infrastructure to accelerate global money movement for enterprise clients including Worldpay, Deel, LianLian Global and Rapyd. Backed by Visa, Haun Ventures, Coinbase Ventures, Scribble Ventures, DRW Venture Capital, Avenir and Tiger Global, BVNK facilitates billions in transactions with global licenses and tier-one bank partnerships.