Senior Software Engineer – Java (fmx)

Do you want to build the systems that physically move parcels across Europe generate shipping labels at scale and turn a constant stream of carrier scans into real-time tracking for millions of shipments

We are looking for a Senior Software Engineer to join our Carrier Integration Team. You will design build and operate the backend services that integrate Seven Senders with Europes carriers end-to-end; from label generation routing and returns to ingesting and normalizing parcel tracking events from dozens of carrier APIs EDI feeds and webhooks. You will own the full lifecycle from architecture to production on a modern event-driven JVM stack built around Domain-Driven Design.

Our core tech stack includes Java 21 (moving to 25) Spring Boot 3/4 MongoDB MySQL Kafka (AWS MSK) Vue AWS Docker and Kubernetes.

Your main responsibilities: 

• Design develop and operate backend microservices using Java and Spring Boot following Domain-Driven Design and clean architecture principles.
• Build event-driven pipelines using Kafka and SQS to ingest normalise and distribute high-volume carrier-tracking events.
• Integrate new carriers across REST SOAP EDI and SFTP designing resilient clients for third-party APIs.
• Design efficient scalable data models in MongoDB and MySQL.
• Deploy and operate containerised services on Kubernetes (AWS Datadog Prometheus) writing well-tested contract-first code and actively contributing to design discussions code reviews and agile ceremonies.

Qualifications :

This is what you need to succeed:

• 5 years of backend development experience with strong proficiency in Java and the Spring Boot / Spring ecosystem.
• Solid experience with microservices and event-driven architectures (Kafka SQS or equivalent) and contract-first API development with OpenAPI.
• Hands-on knowledge of both NoSQL (MongoDB) and relational (MySQL) databases including data modelling and performance tuning.
• Strong grasp of Domain-Driven Design and software architecture with proven experience integrating third-party APIs and designing for resilience against unreliable upstreams.
• Production experience with Docker Kubernetes and cloud-native AWS environments; familiarity with GraalVM native images and Vue TypeScript is a plus.

Additional Information :

What we offer:

Flexible & Hybrid Work: Our office is at Alexanderplatz; we have a hybrid working model with flexible remote-office set-up and working hours. And if you wish you can work from almost anywhere for up to 2 months per year.

Benefits: We offer company lunches twice per month a corporate benefits platform and German language courses.

Mission Zero: Climate-neutral and long-term impact. With our green initiatives we are reaching climate neutrality for ourselves and hopefully were inspiring the entire logistics sector to join us to create a sustainable future.

Vibrant Culture & Community:  We embody collaboration open doors and no-fuss results focus and we are successful with our data-driven and efficient working approach. We like to celebrate and come together and we strive for a workplace buzzing with energy and camaraderie highlighted by regular team events and company-wide celebrations.

Inclusive Environment: We value diversity and welcome all applicants regardless of ethnicity religion national origin sexual orientation gender identity age or disability.

If you meet the above qualifications and are excited about the opportunity to join our team we encourage you to submit your application today. Please scroll down to submit your English CV. 
We look forward to hearing from you!

Remote Work :

No

Employment Type :

Full-time