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.