Backend Software Engineer

Role overview

We are seeking a hands-on backend engineer to add new capabilities to the Payments platform, applying deep backend engineering skills to high-stakes, distributed financial systems. The engineer will develop and maintain production Java/Spring Boot services, contributing to feature development, bug fixes, and reliability improvements across the platform.

Requirements

• 5+ years of backend engineering with Java and Spring Boot (Boot 3 preferred) in production microservices.

• Mid-to-senior level, with demonstrated ownership of production services in a distributed systems environment.

• Experience with GraphQL — either building APIs with Netflix DGS or consuming them via the Apollo Java/Kotlin client (Apollo GraphQL client experience required).

• Hands-on experience with AWS SQS, Apache Kafka, or RabbitMQ in event-driven, distributed systems.

• Strong JPA/Hibernate experience with MySQL/Aurora (Spring Data JPA), including transactional design and optimistic locking.

• Experience writing JUnit 5 unit tests with Mockito and integration tests against live environments.

• Proficiency with Gradle multi-module builds.

• Experience with GitLab CI/CD pipelines and Datadog (metrics and monitors).

• Comfortable using AI coding assistants (e.g., GitHub Copilot, Claude) responsibly to accelerate development while maintaining code quality and correctness.

• Experience with financial-grade backend systems where correctness, idempotency, and consistency are non-negotiable.

• Ability to reason clearly about transactional boundaries across external systems (e.g., a third-party billing platform plus a local metadata store).

• Have built or maintained a production Spring Boot service that consumes events from SQS, Kafka, or RabbitMQ.

• Have designed idempotent event handlers for workflows.

• Have written JPA entities and managed schema migrations against a production MySQL/Aurora database.

• Have integrated with an external REST- or SDK-based third-party platform.

• Have set up or worked with Datadog monitors as deploy quality gates in a CI/CD pipeline.

• Will be a plus

• Prior experience in the Billing or Payments domain.

• Experience with DynamoDB (AWS SDK v2) and/or MongoDB (Spring Data) in a multi-store architecture.

• Experience with Netflix DGS.

Responsibilities

• Develop and maintain backend Java/Spring Boot services across the Payments platform.

• Add new payment methods to the platform's existing capabilities.

• Contribute to feature development, bug fixes, and reliability improvements across these services.

• Deliver production-ready feature work and bug fixes through GitLab CI, with unit and integration test coverage that meets Jacoco gates.

• Strengthen system reliability through improved observability, resilience patterns, and safe canary and production deploys gated by Datadog monitors.

• We offer

• US and EU projects based on advanced technologies.

• Competitive compensation based on skills and experience.

• Regular performance appraisals to support your growth.

• 15 vacation days, 10 national holidays, 10 sick days.

• Free tech webinars and meetups organized by Svitla.

• Reimbursement for private medical insurance.

• Personalized learning program tailored to your interests and skill development.

• Bonuses for article writing, public talks, and other activities.

• Fun corporate online/offline celebrations and activities.

• Awesome team, friendly and supportive community!

• Why join Svitla

• Svitla Systems is a global digital solutions company headquartered in the U.S. and operating across the Americas, Europe, Asia, and APAC. Since 2003, we have served a wide range of clients - from innovative start-ups to Fortune 500 companies. Our success is built on partnership. By integrating seamlessly with clients' teams, we create lasting collaborations that drive real results. We are strong advocates of workplace flexibility, remote culture, individual approach to professional and personal growth.

• Our global mission is to build a business that contributes to wellbeing of our partners, personnel, and their families, improves our communities, and makes a lasting difference in the world. Together, we are coding a brighter tomorrow - and living it.

• Join us!

• Vacancy details

• Recruiter