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Senior Software Engineer (m/f/d)

Berlin💼 Full-time🗓 2026-07-27 → 2026-09-26

Core

Senior Software Engineer building and optimizing the core product that coordinates Flix with Mobility Partners to manage global passenger mobility operations.

Role type

Senior Software Engineer (Backend)

Builds

Microservices, event-driven systems, and distributed infrastructure for the Flix Mobility ecosystem.

Domain

Mobility / Transportation / SaaS

Deliverable

production ML models | product features | infrastructure

Required skills

Java, Kotlin, Spring/Spring Boot, Kafka, MySQL/Postgres, Redis, MongoDB, AWS, Kubernetes, Docker, Terraform, distributed systems design, event-driven architecture, clean code, architectural decision-making, AI-assisted coding

Preferred skills

Data engineering (ETL, Snowflake), mentoring, teaching

Technologies

Java, Kotlin, Spring Boot, Kafka, MongoDB, MySQL, Postgres, Redis, AWS, S3, Kubernetes, Docker, GitLab CI, Terraform

Responsibilities

Design new products from the ground up while improving existing ones; drive development in an Agile environment; lead technical decisions across teams; optimize coordination between Flix and Mobility Partners; solve complex architectural challenges at scale.

Seniority

Senior, hands-on IC with lateral leadership

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