> Markdown version of [/jobs/ext/1683132-software-engineer-backend](https://www.wearedevelopers.com/jobs/ext/1683132-software-engineer-backend). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer (Backend) - **Company:** Bvnk's Core Banking - **Location:** Madrid, Spain (Remote available) - **Salary:** €70,000.0 - €110,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Confluence, JIRA, Microsoft Azure, Code Review, Continuous Integration, Relational Databases, Distributed Systems, Payment Systems, Fault Tolerance, Java Virtual Machine (JVM), PostgreSQL, Performance Tuning, Data Logging, Backend, Kotlin, Event Driven Architecture, Containerization, Git Flow, Kubernetes, Apache Kafka, Amazon Simple Queue Service (SQS), Domain Driven Design, Docker, Microservices - **Published:** July 11, 2026 - **Apply:** https://www.jobleads.com/es/job/e195d2eb7c05cc1a70499142a521c39b7 ## About the Role * Strong experience as a backend software engineer, with deep proficiency in languages such as Java, Kotlin or similar JVM-based languages. * Experience designing, building, and operating microservices in a distributed systems environment. * Solid understanding of relational databases (e.g., PostgreSQL) and event-driven architectures (e.g., Kafka, SQS/SNS). * Experience with cloud platforms such as AWS, GCP, or Azure. * Experience with containerisation and orchestration technologies including Docker and Kubernetes. * Familiarity with infrastructure-as-code concepts and modern software delivery practices (CI/CD). * Experience with observability and reliability tooling including logging, metrics, tracing, and performance optimisation. * Comfortable working with Jira, Confluence, Git-based workflows, and collaborative engineering practices. * Strong communication skills with the ability to explain technical concepts clearly to both technical and non-technical stakeholders. * A thoughtful, practical approach to problem-solving that considers tradeoffs and avoids over-engineering., * Experience working in fintech, payments, or banking infrastructure, particularly around fiat payment processing, clearing, or settlement. * Exposure to payment schemes, banking APIs, or multi-rail payment routing and orchestration. * Experience with stablecoin or cryptocurrency infrastructure and fiat-to-crypto bridging. * Understanding of domain-driven design and hexagonal architecture patterns. * Familiarity with reconciliation systems, idempotency patterns, and handling eventual consistency in financial workflows. * Experience working in high-growth or fast-scaling technology environments. * Experience contributing to engineering strategy, hiring, or organisational scaling initiatives. ## Description The Fiat Orchestration subdomain sits within BVNK's Core Banking domain and is responsible for the reliable, scalable processing of fiat currency transactions across multiple banking rails and payment networks. It ensures that every fiat payment-whether an inbound deposit, outbound settlement, or cross-border transfer-is executed accurately, reconciled, and delivered on time. Our product and engineering organisation is split into small autonomous squads empowered to own their problem space. As a Senior Software Engineer in the Fiat Orchestration squad, you'll design and build the backend systems that power the movement of fiat currency through BVNK's platform. You'll work on services that orchestrate payment instructions, interface with banking partners and payment schemes, manage transaction lifecycle states, and ensure settlement integrity at scale. 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., * Design, develop, and maintain high-performance backend services that power fiat payment processing, including transaction orchestration, settlement, and reconciliation. * Build and evolve integrations with banking partners, payment networks, and financial infrastructure to support multi-rail, multi-currency fiat operations. * Contribute to the architecture and evolution of the fiat processing platform, ensuring reliability, fault tolerance, and data consistency across high-throughput transaction flows. * Build and maintain APIs that manage the full transaction lifecycle-initiation, status tracking, settlement confirmation, and exception handling-consumed by teams across the platform. * Drive improvements to system observability, performance, and resilience, including monitoring, alerting, and incident response. * Collaborate closely with cross-functional partners including product, design, and other engineering squads to deliver high-impact features. * Participate in code reviews, architectural discussions, and technical design sessions to uphold engineering standards. * Contribute to the team's engineering culture by mentoring peers, sharing knowledge, and championing best practices. * Participate in an out-of-hours on-call rotation. ## Related Videos - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Enterprise-Cloud-Native - Fast-Paced Development & Deployment in a Highly Secure Banking Environment](https://www.wearedevelopers.com/videos/671-enterprise-cloud-native-fast-paced-development-deployment-in-a-highly-secure-banking-environment) - [Migrating half a million users to a new payment service provider](https://www.wearedevelopers.com/videos/730-migrating-half-a-million-users-to-a-new-payment-service-provider) - [Integrate your Cognitive Assistant with 3rd-party DBs and software](https://www.wearedevelopers.com/videos/249-integrate-your-cognitive-assistant-with-3rd-party-dbs-and-software) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [How Much Does a Software Engineer Make? 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