Senior 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 growing our engineering function and looking for Senior Java Engineers to join our product teams. Depending on your background, skills, and current business needs, you'll join one of the following teams:

Banking Project Development: building our banking and payments infrastructure.

New Assets: bringing new investment products to market, including Notes & Loans, ETFs, Crypto ETPs, and upcoming products.

Investor Experience Platform: powering the services behind the investor journey.

We'll explore together which team is the best fit during the hiring process.

You will:

• Deliver backend features end-to-end, from API design to integrations with internal systems, external providers, and partners.
• Design and implement services within a microservices, event-driven architecture with clear domain ownership.
• Write clean, maintainable, well-tested code using modern Java and Spring Boot.
• Ensure high system reliability and performance, covering edge cases and failure scenarios.
• Build and maintain APIs that let other teams integrate with your team's services.
• Collaborate daily with engineers, product designers, and product managers to create intuitive, valuable product experiences.
• Continuously improve performance, observability, and the overall developer experience.

Our tech stack:

We work in a microservices architecture where systems are event-driven and built around eventual consistency, domain ownership, and observability.

Java 21, Spring Boot 3.5.x

Groovy 4, Spock 2.4

Lombok, Vavr

Cucumber for end-to-end tests

RabbitMQ for inter-service communication

Liquibase, PostgreSQL

Gradle, Docker, Kubernetes

GitHub for source control and deployment pipelines

AWS (ECS, ECR, RDS, CloudWatch, S3, SQS, SNS)

If you don't meet all the requirements above, we still encourage you to apply!

• 5+ years of experience building scalable backend services with modern Java (11+), Spring Boot, and related tools.
• A good grasp of distributed systems, message brokers (e.g. RabbitMQ), and service boundaries.
• Solid SQL skills and experience with relational databases such as PostgreSQL.
• Familiarity with CI/CD, Docker, Git, and containerized deployment practices.
• A test-driven mindset and a strong sense of ownership over your code in production.
• Good communication skills and written English, since we work in international teams.
• Experience in agile, cross-functional teams, with a passion for product discovery and delivering real user value.

Nice to have

• Experience in fintech, banking, payments, accounting, or other regulated domains, especially relevant for Banking Project Development.
• Experience integrating with external financial providers or modelling financial instruments, especially relevant for New Assets.
• Experience building internal platform services that other engineering teams depend on, especially relevant for Investor Experience Platform.
• Experience building RESTful APIs.
• Experience with event-driven architecture or patterns like event sourcing.

• 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.