Senior Backend Engineer - €70.000 - €100.000 A Year

Senior Backend Engineer Utrecht | Build the Backbone of the Next-Gen FinTech Platform | Kotlin, Ktor, Kafka, Kubernetes, GCP, BigQuery, PostgreSQL | €100.000 + Stock Options + 5% Bonus

Do you want to build the next generation of FinTech infrastructure : an event-driven platform where precision, scalability, and security meet?

Do you get energy from building scalable systems that securely process millions of euros every day?

Would you like to work with top-tier engineers (including former Adyen engineers) on greenfield products within a rapidly growing scale-up?

And do you say yes to a salary up to €100.000 + stock options + 5% bonus, and the chance to make real impact on the product?

Then read on.

Your Employer: FinTech Scale-up with Proven Product-Market Fit and Big Ambitions

This fast-growing FinTech scale-up from Utrecht develops a cutting-edge platform that helps companies automate their financial infrastructure. With a robust architecture, smart APIs, and event-driven technologies, their product makes financial processes not only faster but also more transparent and scalable.

This is the perfect time to join: product-market fit has been achieved, large customers are being onboarded, and the platform is rolling out globally. The focus is on building new SDKs, innovative billing and pricing products, and intelligent data integrations. Meanwhile, the underlying infrastructure is being prepared for massive growth. Think scalability, security, and cloud automation .

The culture is exactly what engineers value: entrepreneurial, technically sharp, and solution-driven. You’ll work with ambitious colleagues from top tech companies (including Adyen) in an environment where you’re free to take ownership, share ideas, and shape a platform that’s redefining the FinTech market in the coming years.

As a Senior Backend Engineer Utrecht, you’ll play a key role in the evolution of the platform. You’ll work with Kotlin, Ktor, Kafka, Kubernetes, GCP, BigQuery, and PostgreSQL to design and develop scalable backend services, data pipelines, and APIs.

You’ll be involved throughout the entire product lifecycle : from designing new services to building, testing, and deploying them into production. You’ll collaborate closely with the product team to deliver new FinTech solutions. Think of building SDKs, real-time event processing, external integrations, and optimizing cloud resources for maximum performance .

You’ll also have the opportunity to expand your technical influence: contributing to architecture, CI/CD, security, and data infrastructure, while mentoring colleagues and promoting best practices. Interested in deepening your expertise in cloud or data engineering? This is the place to do it.

What’s Required?

At least 4 years of experience in backend development

Experience with Kotlin (or Java) and frameworks like Ktor or Spring Boot

Experience with event-driven architectures is a major plus

Experience with cloud platforms (preferably GCP) and containerization ( Kubernetes )

Knowledge of databases such as PostgreSQL or BigQuery

Affinity with FinTech, scalable systems, and security

Strong communication skills and a completed technical BSc or MSc

Availability to work on-site in Utrecht at least 4 days per week

Eligible to work in EU (they can not yet sponsor Visa)

What’s Offered?

Salary between €70.000 and €100.000 gross per year, depending on experience

Stock options in a fast-growing scale-up (could be your pension one day!)

5% annual bonus

Travel allowance

MacBook of your choice

Lunch provided at the office

Beautiful office right next to Utrecht Central Station

Collaborate with top FinTech engineers in a tech-first environment

Do you want to help build a scalable FinTech platform that’s modernizing the global financial industry, while growing your own career within a world-class engineering team?