Technical Lead - Platform Transformation

mobile.de is Germany’s largest vehicle marketplace, with more than 1.6 million listed cars, commercial vehicles, motorcycles, and e-bikes (annual average 2025). Both private customers and registered vehicle dealers use the platform and benefit from more than 140 million visits per month*. As a “one-stop shop,” mobile.de’s offering includes not only buying and selling, but also financing and leasing solutions. Founded in 1996, the company is a subsidiary of Adevinta, a global leader in online classified portals.

Based in Berlin-Charlottenburg, we offer a dynamic environment where growth, learning, and collaboration are at the heart of everything we do. If you are driven by an eagerness to disrupt, have a passion for collaboration, and are excited about shaping the future of mobility, we would love to hear from you.

We are looking for an experienced Technical Lead to support the transformation of a live, customer-facing marketplace platform. You will lead architecture and delivery across cloud migration, application separation and operational transition, working with mobile.de teams, distributed engineers and external partners.

Before completion of the relevant transaction and regulatory conditions, work will be limited to approved planning, technical preparation and due diligence. Implementation, system activation and operational transition will begin only once those conditions are met.

Who you are

• Senior software engineer, platform engineer or Technical Lead with 5+ years’ experience and a track record of leading complex migrations or platform transformations.
• Strong experience with AWS, including S3, KMS, DynamoDB, networking, identity and secure cloud environments.
• Strong experience with Github CI/CD ecosystem, Terraform, Docker and production operations; experience with Heroku-to-AWS migration is a plus.
• Hands-on experience with PostgreSQL and large-scale data or object-storage migration.
• Experience with Ruby/Rails, JRuby and/or Clojure in a mixed application landscape.
• Practical experience with Kafka, Kafka Connect, Redis, Memcached and Elasticsearch or comparable technologies.
• Familiarity with GitHub, CircleCI, Fastly, DNS, Auth0, Okta, Algolia, Imgix and external APIs.
• Experience with Honeycomb, Bugsnag, PagerDuty or comparable observability and incident-management tools.
• Comfortable working with data-platform dependencies involving GCP, BigQuery, Airflow/Cloud Composer, dbt and Fivetran.
• Excellent communication and stakeholder-management skills across organisational and time-zone boundaries.
• Fluent English; German at B2 level or above is a strong advantage. Willingness to travel occasionally.

What you'll do

• Own the technical roadmap, target architecture, dependencies, risks and readiness criteria for a complex platform transformation.
• Co-Lead post-completion migration of applications, databases, object storage and platform services into a mobile.de-owned cloud environment together with a Lead Site Reliability Engineer.
• Coordinate codebase separation, dependency management, release sequencing and migration of event-driven services and messaging flows.
• Define cutover, rollback, testing, security and operational-readiness plans for live customer-facing systems.
• Establish effective ways of working across engineering, product, operations, security and external delivery teams.
• Ensure monitoring, alerting, incident response, runbooks and ownership are in place before services move into the target operating model.
• Make pragmatic architecture decisions and communicate trade-offs clearly to technical and non-technical stakeholders.

Benefits

Working at mobile.de comes with its perks! Enjoy the following benefits (some of many):

• Rewards: competitive base salary and participation in the company’s incentive programs.
• Plan for the Future: On top of the statutory retirement insurance, we offer a competitive company pension scheme.
• Team-Building: Regular team and company events offer the opportunity to network and learn from each other.
• Learning & Development: Keep growing with access to coaching, learning platforms and resources.
• Mobility: Stay mobile with a monthly transportation allowance.
• Enjoy working: Our well-equipped office supports focused work and teamwork – plus inviting social zones where colleagues can relax and connect.
• Flexible working: a hybrid approach with the option to work abroad for a set number of days per year.
• Wellbeing: confidential employee assistance and support services available to employees and their immediate families.
• Family support: enhanced parental leave and family-friendly policies to support all parents and careers.

Meaningful Work: We are a diverse, international, highly skilled and passionate team committed to a world where people share more and waste less. Every day you will have the opportunity to make a huge difference for our users, customers as well as shape the future.
Embracing AI: We’re at the forefront of integrating cutting-edge AI technologies into our operations. Being part of mobile.de you will work with and learn about AI tools, contributing to projects that leverage AI to enhance efficiency, improve customer experiences, and drive our mission forward. With an AI-first mindset, we foster a culture of continuous learning and experimentation, empowering our team  to explore and apply AI in meaningful ways for the company and themselves.
Connection and Inclusion: Our culture is the glue that holds us together. We believe in making meaningful connections and creating an inclusive atmosphere with lots of opportunities to connect both in your day to day work and through social team activities (online and offline).

mobile.de is an equal opportunity employer and we value diversity. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status or disability status. 
(*Source: mobile.de Google Analytics Tracking, average per month January to December 2025)