Java backend developer Jobs in Köln

Become part of something bigger than code.

We’re building a marketing AI platform that redefines how companies work. You’ll develop scalable gRPC microservices in Go that power our AI engine — and we’re looking for someone who doesn’t need a to-do list to get started.

Aufgaben

What you'll do :

• Build performant backend services in Go
• Work with PostgreSQL , Redis , RabbitMQ , Docker
• Design and ship GRPC APIs for our AI-driven infrastructure
• Think in systems, not just functions
• Contribute ideas, not just code

Qualifikation

What we expect :

2 years)

Benefits

🎁 Benefits at Atmos

🏢 Hybrid work setup

Enjoy the best of both worlds — focused office time in Cologne, flexibility when it counts.

⏱ Flexible working hours

We care about outcomes, not hours. No rigid schedules.

🚀 High-impact work

You're not shipping tickets — you're shaping the future of marketing.

🧠 Startup energy, no chaos

Clear roadmap. Real ownership. No pointless meetings.

🧩 Autonomy & trust

No micromanagement. You get space, responsibility, and influence.

📚 Real learning curve

Work with cutting-edge tech and a team that challenges and supports you.

🪜 No dead ends

As Atmos scales, your role and impact grow with it.

📈 Be part of something big

We’re not building just another tool — we’re replacing entire marketing teams.

At Atmos, we're not just building tools — we're engineering a new way of doing marketing. AI-driven, fully integrated, and radically efficient. We're looking for people who think big, move fast, and don’t wait to be told what to do.