Java Backend Engineer – Integration

Join a fintech scale-up with a proven product, strong market momentum, and a front-row seat to the future of compliance.

Intro

Turn integrations into a product.

At Harmoney, you'll work on a product trusted by organisations such as Belfius, Baloise, AG Insurance, and Swiss Life. More importantly, you'll join a team that's ambitious, supportive, and genuinely enjoys building great things together.

As Integration Engineer, you'll design, build and maintain scalable integrations that connect the Harmoney platform with the systems our customers rely on, and grow our integration ecosystem.

If you enjoy building clean, lasting connections between complex systems, we'd love to meet you.

Your impact

As Integration Engineer, you'll make integrations a scalable, reliable part of the Harmoney platform.

Integrations are one of the engines of our growth, so we're turning them into a dedicated squad. Your work lets our customers orchestrate their business processes end to end in a single platform. Within your first year, you'll take full ownership of our integration catalogue and lay the groundwork for an integration marketplace.

What you'll do

• Explore new integrations, from capturing requirements to building a proof of concept

• Build new integrations and improve existing ones

• Support and maintain the integrations our customers rely on today

• Maintain and extend the interfaces between our product and its integrations

• Investigate and improve our overall integration architecture

• Develop our integration catalogue, and later an integration marketplace

• Partner with the core team, custom team and sales to get integrations live

You'll thrive in this role if you...

• Have 3 to 6 years of experience in software or integration engineering and a bachelor's or master's degree in IT or a related field

• Build with Java, REST and OpenAPI with confidence

• Know your way around authentication frameworks such as OAuth

• Think beyond the requirements and design integrations that last

• Take ownership before, during and after implementation

• Communicate clearly with technical and business colleagues alike

• Are fluent in English and Dutch

Bonus points for experience with Quarkus, Kubernetes, Azure, service mesh, SAML or single sign-on, AI or the compliance domain, and for the ambition to lead a team one day.

What you get

• Salary scale C1 (3000 - 5250 EUR gross/month), plus a company car (Tesla Model 3, BMW iX1 or similar) or mobility budget, 32 days of annual leave, MacBook and smartphone

• A flat, down-to-earth team with approachable leadership and real ownership

• Complex, real-world problems and a modern stack, so your brain stays busy

• Hybrid from our Ghent office

Prefer to work as a contractor? We're open to both payroll and freelance collaboration.

About Harmoney

Following a €10 million Series A funding round, we're accelerating our growth across Europe and investing in our people, product, and international expansion. Headquartered in Ghent, Harmoney builds a modular SaaS platform that helps financial institutions automate compliance throughout the customer lifecycle. As winner of the McKinsey Startup Challenge 2025 and a Deloitte Technology Fast 50 2025 company, we're building the future of compliance technology, and we're looking for talented people to help shape it.