Backend Engineer (Java)

Millions of people across Europe want better ways to build long-term wealth, but traditional investing feels complex, inaccessible, or out of reach.

Mintos is solving that. We've built a platform that makes passive income investing simple, transparent, and accessible, and we're expanding fast.

You'll revolutionize our internal payment infrastructure and support millions of investors across Europe in seamlessly managing their funds across all our investment products - all in one place. If this is the kind of problem you want to solve, let's talk.

What you'll do

We're looking for a Java Engineer who's excited to help us build the backend systems behind the investor experience at Mintos - the platform where hundreds of thousands of investors across Europe access loans, bonds, ETFs, and more.

This is a high-impact opportunity: you'll build and operate the services that connect Mintos core systems with the tools that power investor communications - so that every important moment in an investor's journey reaches them reliably and on time. You'll work on event-driven integrations, real-time data flows, and integrations with external platforms, and you'll set the technical foundation for every new Java service our team builds.

You'll join a team that starts every piece of work with "why", keeps scope lean ("less but better"), makes reversible decisions quickly, and takes its time on the ones that are hard to undo.

If you want your code to directly shape how investors experience Mintos, we'd be excited to get to know you!

You will:

• Deliver backend features and integrations end-to-end - from specification through production deployment and monitoring.
• Keep message-driven processing reliable: at-least-once delivery with deduplication, retries with backoff, and circuit breaking.
• Design and build new Java services as the team's backend footprint grows, applying clean architecture and a consistent quality bar from day one.
• Write comprehensive automated tests as part of development, backed by architecture tests and static analysis on every merge.
• Contribute to RFCs for decisions other teams depend on, and review your peers' designs constructively.
• Document contracts, integration behavior, and architectural decisions so other teams can integrate without asking.
• Collaborate daily with engineers, product owners, and cross-functional teams to solve real investor problems.

Our tech stack:

We build event-driven services with hexagonal architecture (ports and adapters), enforced code quality, and observability as core principles.

• Java 21, Spring Boot
• Gradle, Lombok, vavr
• RabbitMQ for inter-service communication
• PostgreSQL, Spring Data JPA, Liquibase
• Spock and JUnit for testing, Testcontainers, ArchUnit for architecture rules
• Resilience4j, Caffeine
• Enforced formatting and static analysis (Google Java Format, Error Prone, PMD)
• Docker, GitHub Actions for CI/CD
• AWS services (ECS, ECR, RDS, CloudWatch)

• Proven experience building production backend services with modern Java and Spring Boot;
• Good grasp of message-driven systems and brokers like RabbitMQ or Kafka - delivery semantics, idempotency, dead-letter handling;
• Solid SQL skills and experience with relational databases like PostgreSQL, including schema migrations;
• Experience with layered or hexagonal architecture, and the discipline to keep domain logic free of framework dependencies;
• A test-driven mindset and a strong sense of ownership over your code in production;
• Comfort with CI/CD pipelines, Docker, Git, and containerized deployment practices;
• Fluent Latvian and good written and spoken English (Mintos works across international teams)
• Experience working in agile cross-functional teams, with a focus on understanding the business problem before writing code.

Nice to have

• Worked with customer engagement or marketing automation platforms (Braze, Iterable, or similar);
• Experience with resilience patterns for third-party integrations - timeouts, backoff, circuit breakers;
• Familiarity with observability practices: structured logging, metrics, tracing (CloudWatch, OpenTelemetry, or similar);
• Experience with ArchUnit, Spock, or contract-first API development.

• Competitive salary and stock options. Your experience and contribution matter, and we reflect that in fair compensation. You’ll also receive equity so you can share in the value you help create.
• Flexibility that fits real life. We understand how important it is to stay connected with colleagues while having the opportunities to work remotely. Come to the office to collaborate and be productive side by side, work from home when you need to, and spend up to three months each year working from another country.
• Generous vacation policy. Rest and recovery are essential. We don’t limit vacation to the minimum required by law. Take the time you need to recharge and come back refreshed.
• Learning and growth. An annual €1,200 learning budget to support your professional and personal growth. Whether you want to explore something new or deepen your expertise, we’ll support you along the way.
• Very well equipped office. Comfortable environment matters. When in the office, enjoy the parking, showers, kitchen with snacks and drinks, massage chair, nap room and others.
• Proud to be recognized for fairness Mintos was recognized by Figure Baltic Advisory for fairness and equality in compensation and representation, achieving 3rd place in 2025.
• International team of 200+ people from 17+ countries Join a diverse team where different perspectives and experiences are valued. We work across Europe, share ideas openly, and collaborate to solve meaningful challenges together.