Backend Engineer

Backend Engineer

Antwerp (2000) - Hybrid

Full-time - Apply for this position via [email protected]

Why this role as Backend Engineer at Rollo.ai matters

At Rollo.ai, we build AI systems that run in production, but great AI starts with great software. As a backend engineer, you will be the foundation of that. Your first mission is to migrate a legacy Java monolith into a clean, distributed DDD architecture combined with advanced CI/CD.

About Rollo.ai

Rollo.ai is Antwerp's no-nonsense AI agency. We build tailored AI agents that bulldoze busywork so teams can focus on what really matters. Our crew is a tight-knit mix of engineers and strategists who turn ambitious ideas into reliable systems. We're obsessed with impact, allergic to fluff, and believe the best tech is built by people who are curious, honest, and not afraid to push boundaries.

What you will do as Backend Engineer

• Communicate with precision across domains: write clear technical proposals, ask the right questions before writing a line of code, and align stakeholders across services and teams. We treat clear thinking and clear writing as engineering skills, not soft extras.
• Design and implement clean, well-structured services in a monorepo setup with modern CI/CD pipelines.
• Bridge business problems and technical architecture across services, across domains, across teams.
• Use AI tooling daily: generate code, accelerate pull requests and apply 'vibe coding' in a controlled, professional way.
• More ... See pdf attached

Skills & Experience

• Master's degree in Computer Science, Artificial Intelligence or a related field (PhD is a plus, not a must).
• Medior-level software engineering experience.
• Strong Python skills and hands-on experience with FastAPI or similar frameworks.
• More ... See pdf attached

More ...

See pdf attached

How to apply

If this sounds like the kind of work and team you're looking for, we'd love to hear from you.

Apply for this position via [email protected].

• Master's degree in Computer Science, Artificial Intelligence or a related field (PhD is a
  plus, not a must).
• Medior-level software engineering experience.
• Strong Python skills and hands-on experience with FastAPI or similar frameworks.
• Ability to read and navigate Java codebases. You don't need to write new Java code but
  must be able to understand and extract logic from existing code.
• Solid grasp of Domain-Driven Design and distributed system principles.
• Experience with or strong interest in monorepo setups and modern CI/CD practices.
• Good grasp of data structures, algorithms, and software engineering principles.
• Comfortable working with cloud platforms (Azure, AWS, …) and modern development
  practices.
• Strong written and spoken English.