Senior Backend Engineer - Kotlin, Spring, AWS - Data Solutions Team (d/f/m)

What is working at Bettermile like?

• We mean it when we say “cutting edge” and have a high level of creative freedom in our everyday work.

• You will be surrounded by like-minded, driven, skilled, and highly motivated people who are keen to contribute to successful solutions.

• We mean diversity, and we put it in numbers: 100+ people, 33 languages, 41% female (vs. ø26% in the tech industry), ø33 years of age, and yes, we do have Schlager-Fans among us.

• We have a very supportive and appreciative working environment with a lot of autonomy, a flat hierarchy, and professional growth possibilities.

• We work in a hybrid mode, with weekly team days for better collaboration and nurturing interpersonal connections. When onsite, we work in a modern, kid- and pet-friendly Better Space in the heart of Berlin-Kreuzberg.

• Remote work from anywhere for up to 12 weeks in total per year.

• 30 vacation days in a 5-day/week working model.

• Part-time for 32 hours is possible.

• Kindergarten grant and a Company Pension scheme.

• Regular team breakfasts, fitness & wellness classes, company runs, and other events. Fruits, snacks, drinks, and coffee with a variety of milk are a given - but yes, we have them.

• Outstanding flexibility we are proud of – and, of course, the best colleagues in the world!

About The Data Solutions team - Better Tracking Tribe:

The Data Solutions Team is part of Better Tracking Product Tribe at Bettermile. As a Backend Engineer in the Data Solutions team, you will work closely with our Data Analysts to build and refine data pipelines that feed into Machine Learning models, Decision Trees, and other prediction models. Your contributions will directly impact our data-driven decision-making and the development of new products. This role offers a great opportunity to shape our backend architecture while integrating with cutting-edge analytics and AI-powered solutions.

Our Tech Stack:

Backend: Kotlin, Spring Boot, Gradle, API testing tools, PostgreSQL

Data Platform: SQL, Python, Snowflake, Apache Iceberg

DevOps & AWS: Git, GitHub Actions, Pulumi, CDK, ECS/Docker, EventBridge, SNS, SQS, CloudWatch, Glue, Step Functions, Lambda

You will be taking care of

• Driving the future vision and direction of our engineering solutions.

• Designing and implementing features and improvements across all levels of our infrastructure and backend systems.

• Proactively collaborating with other teams, Product Owners, On-Call Engineers, and stakeholders.

• Demonstrating strong ownership during the planning phase, in collaboration with Product Owners.

• Contributing to strategic, long-term team decisions—such as framework and architecture choices—guided by business needs.

• Supporting ongoing efforts to optimize our existing microservice architecture.

• Actively giving and receiving feedback to foster continuous improvement.

• Mentoring and supporting the development of team members.

You check these boxes

• You bring a strong foundation in software engineering, with at least 5 years of hands-on backend development experience.

• You have proficiency in Kotlin, or a strong background in similar JVM languages such as Java or Scala, and are comfortable working with Gradle and the Spring Boot framework.

• You’re confident using API testing tools and Git, and have a track record of applying these skills effectively in real-world projects.

• You’re familiar with AWS services like SNS, SQS, EventBridge, ECS, and CloudWatch, and understand the principles of cloud-based architecture, including analytics and machine learning services.

• You’ve worked with Infrastructure as Code and DevOps practices, contributing to scalable, maintainable infrastructure.

• You’re experienced with CI/CD pipelines and deployment workflows using tools such as GitHub Actions, ensuring smooth, automated delivery processes.

• You have experience mentoring and supporting the growth of other engineers, and you enjoy sharing knowledge and best practices within your team.

• You’re fluent in Business English, and capable of communicating clearly and effectively across teams and roles.

It is awesome if you also have

• Experience with Kotlin Coroutines and non-blocking reactive web servers, enabling scalable and efficient backend services.

• Exposure to or keen interest in data pipelines and data orchestration tools like DBT, Dagster or Airflow, supporting data-driven product development and operations.

• Experience in designing and evolving complex event driven architectures

• Keen interest in supporting a team achieve flow by co-defining pragmatic processes

• You have experience with automated testing frameworks and understand the importance of test coverage and reliability in modern software development.

• Familiarity with performance, load, or stress testing, and an interest in ensuring systems remain reliable under pressure.

Take your chance

Be a part of shaping a fast-growing industry and make an impact from day one. You’ll have the chance to take on responsibility early, with guidance and support from experienced mentors. We foster a learning culture, collaboration on equal footing, and quick decision-making that moves things forward.

Currently, we’re proceeding only with candidates authorized to work in Germany or who already hold a Job Seeker Visa.

About us

At Bettermile, we believe delivery shouldn’t be business as usual. We’re transforming last-mile logistics to drive efficiency and create a better delivery experience for everyone.

Our geo-based, AI-powered SaaS product handles complex address processing, dynamic routing, and navigation. It is built to manage many stops and multiple constraints.

We’re setting a new standard for the last mile and pushing the industry forward, powered by a skilled, international team of tech enthusiasts, logistics experts, and a product suite designed to keep evolving.