Senior Backend Engineer

ABOUT THE ROLE

Join the engineering team of a Series A B2B SaaS company building an AI-powered omnichannel customer communication platform for SMEs. You'll work on core backend technologies that power messaging, automation, and AI-driven workflows — shipping features end-to-end in a high-ownership environment and contributing to long-term architecture decisions.

WHAT YOU'LL DO

• Build and deliver new backend features that reach customers directly.
• Improve platform performance and reliability to enhance the user experience at scale.
• Participate in long-term architecture discussions and help define technical direction.
• Shape internal development processes and establish best practices across the engineering team.
• Bring your own ideas to influence product and platform decisions.

WHAT WE'RE LOOKING FOR

• Required: Proficiency in Java and TypeScript — both are essential for this role.
• Required: Experience with Quarkus or Spring Boot (or comparable JVM frameworks).
• Required: Hands-on experience with AWS and Terraform for cloud infrastructure.
• Strong PostgreSQL experience.
• Familiarity with AI libraries such as LangGraph.
• Background building scalable backend systems for communications or messaging platforms.
• Strong computer science fundamentals and a track record delivering features end-to-end at senior level.

TECH STACK

• Backend: Java, Kotlin, Quarkus, Spring Boot, TypeScript
• Cloud & Infra: AWS (RDS/PostgreSQL, S3, SQS, SNS, SES, Lambda, CloudFront), Terraform
• AI/Search: LangGraph, OpenSearch
• Observability & tooling: DataDog, Sentry, GitHub Actions, LaunchDarkly

LOCATION & WORK ARRANGEMENT

This is a hybrid role based in Berlin, Germany. Visa sponsorship is available for qualified candidates.