Senior Software Engineer (Backend): Fiat Orchestration

About the role

As a Senior Software Engineer, you will focus on designing and building backend services for fiat payment processing. This includes orchestrating transactions, managing settlements, and handling reconciliation. A key part of the role involves integrating with banking partners and payment networks to support multi-currency operations, ensuring the platform's reliability and data consistency for high-volume transactions.

The role requires contributing to the architecture and evolution of the fiat processing platform. You will build and maintain APIs that manage the full transaction lifecycle, from initiation to settlement confirmation and exception handling. This work supports various internal teams and demands a focus on system observability, performance, and resilience, including monitoring and incident response.

You will collaborate with product, design, and other engineering teams to deliver features and uphold engineering standards through code reviews and architectural discussions. The position also involves mentoring peers, sharing knowledge, and participating in an out-of-hours on-call rotation. The company operates remotely with a diverse team across EMEA, North America, and APAC.

The salary for this role is competitive, with a range of $75,000 to $115,000 USD, and compensation packages are based on candidate experience and relevant certifications.

Skills that matter here

• Java: This role requires deep proficiency in Java or similar JVM-based languages for backend development.
• Kotlin: Proficiency in Kotlin is valued, alongside Java, for building backend services.
• PostgreSQL: A solid understanding of relational databases like PostgreSQL is necessary for managing transactional data.
• Kafka: Experience with event-driven architectures such as Kafka is important for processing high-throughput transactions.
• AWS: Experience with cloud platforms like AWS is required for deploying and managing backend services.
• Kubernetes: Familiarity with container orchestration technologies like Kubernetes is expected for managing microservices.

Who this role suits

• Someone with a thoughtful and practical approach to problem-solving, who considers tradeoffs and avoids over-engineering.
• An engineer who thrives in a collaborative environment, contributing to architectural discussions and mentoring peers.
• A professional comfortable working with distributed systems and microservices in a remote setting.
• An individual who values continuous improvement in system observability, performance, and resilience.

From the employer

Key Areas of Responsibilities:

• 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.

What we need from you:

• 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.

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. This is as 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