Senior Software Engineer (Backend) - Bvnk

About us:

We believe the next generation of financial services will be powered by stablecoins.

Founded in 2021, our mission at BVNK is to accelerate global money movement.

We’re building stablecoin-native infrastructure so businesses can move value instantly across borders and networks. With global licenses and T1 bank partnerships, we facilitate billions in transactions for enterprise clients like Worldpay, Deel, LianLian Global, and Rapyd.

Our technology is transforming how businesses operate globally by eliminating payment delays, reducing costs, and unlocking trapped capital.

We’re a diverse team spread across EMEA, North America, and APAC, with a shared belief that stablecoins are the new infrastructure layer for financial services, and that BVNK is at the forefront of this shift.

In 2025, we secured strategic investment from Visa, following our $50 million Series B with Haun Ventures, Coinbase Ventures, Scribble Ventures, DRW Venture Capital, Avenir, and Tiger Global. With the backing of these leading investors, we’re accelerating our growth – and we're looking for smart, ambitious people to help us build the future of financial services.

We're incredibly honored to have made Newsweek's list of The Top 100 Global Most Loved Workplaces three years running (most recently in 2025) and to have been recognised by LinkedIn as one of the Top 20 Startups in the UK in 2024.

Location: We offer a Hybrid/Remote working policy.

Function: Engineering

We're looking for a talented Software Engineer to join the Ledger domain, specifically the Reporting & Customer Reconciliation subdomain, within BVNK.

The Ledger domain is the financial backbone of BVNK, a single, trusted source of truth for all customer and house balances across products, currencies, and rails. It guarantees that every unit of value is accurately recorded, traceable, and reconcilable end-to-end. Within this domain, the Reporting & Customer Reconciliation subdomain is responsible for providing clear, consistent financial views derived from the ledger for both internal and external reporting; ensuring positions, balances, and movements are accurately represented for Finance, Risk, Operations, and customers.

This is critical-path work. As part of BVNK's drive toward a 100% self-serve customer experience, you'll help rebuild reporting to give customers full transparency, enabling them to reconcile invoices, audit charges programmatically, and automate close processes.

Our product and engineering organisation is split into small autonomous squads empowered to own their problem space. You’ll be expected to form strong opinions and execute in a fast but sustainable way, advocating for the simplest solution that achieves the outcomes our customers are looking for.

Key Areas of Responsibilities

• Build and improve the Reporting Service — Design and implement services that produce standardised financial reports and views based on ledger data across products, currencies, and rails, serving both BVNK and Layer1 tenants.
• Build reconciliation APIs — Develop customer-facing reconciliation endpoints that enable enterprise clients to programmatically audit charges, automate close processes, and reconcile against invoices.
• Ensure ledger integrity at scale — Work across the multiple services to ensure that every transaction is accurately posted, settled, and queryable — solving problems like fragmented balance logic and inconsistent financial reporting.
• Support the FinLedger pipeline — Contribute to the event-driven transaction processing pipeline maintaining data accuracy and throughput as payment volumes grow.
• Integrate with downstream consumers — Collaborate with the Billing & Fees domain, Finance, and Commercial teams to ensure reporting data aligns with automated invoice data.
• Design for reliability and horizontal scale — Build services following BVNK's hexagonal architecture patterns using Java/ Kotlin, Spring Boot, Kafka, and PostgreSQL. Contribute to HPA tuning and performance optimisation for production workloads.
• Own operational excellence — Participate in on-call rotations, incident response, and production monitoring for ledger-critical services. Help reduce reconciliation breaks and reporting discrepancies.
• Ship with quality — Write well-tested, well-documented code. Contribute to architecture reviews and technical design submissions. Uphold BVNK's microservices standards.

What we need from you

• 5+ years of backend engineering experience in Java or Kotlin with Spring Boot.
• Strong distributed systems fundamentals — experience building microservices with event-driven architectures (Kafka, SQS) and relational databases.
• Data pipeline experience — comfortable working with event-driven data flows (Kafka consumers/producers, outbox patterns) and ensuring data consistency across services.
• Experience with financial data systems — you've worked with ledgers, transaction stores, reconciliation pipelines, or financial reporting systems where data accuracy and auditability are non-negotiable.
• Solid grasp of domain-driven design and hexagonal architecture — you can model complex financial domains cleanly and build services with well-defined boundaries.
• Understanding of double-entry bookkeeping or ledger semantics — familiarity with postings, balance snapshots, transaction types, and how they map to real-world fund movements.
• Collaborative and proactive communication — you work effectively with product managers, finance teams, and cross-domain engineers. You're comfortable operating across time zones in a remote-first setup.
• Production ownership mentality — experience with on-call, incident response, and operational monitoring (Grafana, Prometheus, Micrometer). You take pride in the reliability and accuracy of systems you build.
• Familiarity with CI/CD pipelines, infrastructure-as-code, and observability tooling.
• Open to participate in out of hours on call rota

Nice to have

• Experience with data warehousing tools for reporting and analytics.
• Background in building customer-facing reconciliation or reporting products for B2B fintech or payments platforms.
• Familiarity with database migrations in high-throughput systems.
• Experience with Kafka Streams or event replay architectures for data reprocessing and recovery.
• Exposure to stablecoin, crypto, or blockchain-adjacent products.
• Experience working with multi-tenant architectures.

What you can expect from us

• Fair and competitive salary at every stage of your 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 our offices around the world
• An open and creative environment where you can help us define the future of BVNK, its culture, and its opportunity sets

At BVNK, we are focused on building a diverse and inclusive team. While you may not meet all of our requirements, we’d encourage you to apply if you meet the majority of our expectations. You may be a great fit for this role or another role in our team.

Compensation packages are based on candidate experience and relevant certifications.

Bulgaria Salary Range

€70.000—€110.000 EUR

Compensation packages are based on candidate experience and relevant certifications.

Spain Salary Range

€85.000—€110.000 EUR

Compensation packages are based on candidate experience and relevant certifications.

Poland Salary Range

250 000 zł—480 000 zł PLN