Senior Developer (Backend / Fullstack)

Docbyte NV; Town of Belgium (WI); On-site; USD 90,000 - 120,000; Full time

Job summary

Docbyte NV is looking for a Senior Developer based in the Town of Belgium, Wisconsin. In this role, you will develop high-performance backend services and secure APIs, working closely with the CTO to influence architecture. Ideal candidates have 5+ years of development experience, strong Java skills, and a passion for solving complex problems.

This position offers a hybrid work environment and autonomy to shape product features for sectors like finance and healthcare, ensuring legal compliance and digital trust.

Qualifications

• 5+ years experience as a backend or fullstack developer.
• Strong in Java with knowledge of REST APIs and databases.
• Experience with CI/CD, Docker, and a pragmatic approach to complex systems.

Responsibilities

• Develop backend or fullstack features for Docbyte Vault.
• Contribute to architecture alongside the CTO.
• Mentor other developers and raise engineering standards.

Skills

Java

REST APIs

CI/CD

Docker

MongoDB

English fluency

Dutch (strong plus)

Job description

About Docbyte

Docbyte builds the digital trust layer of Europe. Our SaaS platform, Docbyte Vault, ensures that critical digital documents remain legally valid, authentic and compliant for decades, in line with eIDAS, OAIS and ETSI standards.

We work with leading organisations in finance, insurance, pharma, healthcare, and the public sector. As our platform grows, we are expanding our engineering team with a Senior Developer who loves solving complex problems, designing elegant systems, and building high-quality software.

Your Impact

As a Senior Developer, you will help shape the technical foundation of Docbyte Vault. You’ll work closely with our CTO to design and build:

• high-performance backend services
• secure and scalable APIs
• data structures for long-term preservation
• workflows for timestamping, integrity checks and retention
• features used by Europe’s most regulated industries

This is a role with real autonomy, architectural influence, and end-to-end ownership.

What You’ll Do

• Develop backend or fullstack features for Docbyte Vault
• Contribute to architecture alongside the CTO
• Improve performance, security and reliability
• Write clean, testable, maintainable code
• Mentor other developers and raise engineering standards
• Work with the Product Owner to translate requirements into clear technical deliverables
• Collaborate with QA and DevOps to strengthen the CI/CD pipeline
• Research new technologies that can improve our product offering

Who You Are

• 5+ years experience as a backend or fullstack developer
• Strong in Java
• Experience with REST APIs, databases (MongoDB preferred), CI/CD, Docker
• You enjoy diving into complex systems and designing elegant solutions
• You can think long-term while remaining pragmatic
• You communicate clearly and enjoy collaborating with product and engineering
• You are fluent in English (Dutch is a strong plus)

Nice-to-have:

• Experience with cryptography, integrity, or digital preservation
• Experience in regulated environments (finance, healthcare, pharma, insurance)
• Familiarity with distributed systems or event-driven architectures

Why Join Us?

• Work on one of the most intellectually interesting engineering challenges: preserving digital evidence over decades
• Collaborate directly with the CTO and influence architectural decisions
• Join a growing SaaS company with international ambitions
• Hybrid work environment with autonomy and responsibility
• Contribute to a platform with real societal impact: legal certainty, digital trust and long-term compliance

Ready to build the future of digital trust?