T-SQL / Database Developer (w/m/x/d)

Permanent employee, Full-time · Berlin

Join the ride!

We are seeking an experienced T-SQL / Database Developer with 7–10 years of hands-on experience in Microsoft SQL Server. You will be responsible for designing, developing, and maintaining database solutions, including implementing complex business logic within Stored Procedures and Functions to support applications at MILES Mobility.

Deine Verantwortung

Design and evolve scalable, high-performance OLTP database architectures supporting mobility, payment, and telematics systems. Define schema standards, indexing strategies, and data integrity models.
Design and develop advanced Stored Procedures and Functions that implement core business workflows including reservation lifecycle, trip management, billing calculations, fleet utilization, and financial processing.
Architect database solutions supporting telematics integrations, high-frequency event ingestion like vehicle status updates, and asynchronous system interactions.
Lead performance tuning initiatives including execution plan analysis, advanced indexing strategies, partitioning, and optimization for high-concurrency, high-volume workloads.
Design resilient transaction handling, isolation strategies, and deadlock prevention mechanisms to support mission-critical systems with heavy parallel activity.
Investigate and resolve complex production issues related to database logic, performance bottlenecks, and data inconsistencies in real-time environments.
Contribute to CI/CD processes, schema versioning, zero-downtime deployments, rollback planning, and database change governance.
You will be integrally involved in designing and implementing resilient database server environments, incl. replication, fail-over, load-balancing, and recovery management.
You will be trained on and using AI Agent orchestration to develop features end-to-end from design to review and validation, using automated test suites.

Dein Profil

Strong experience designing scalable, high-availability OLTP database architectures; advanced schema design, normalization/denormalization strategies, partitioning, indexing strategy, and audit/history models for high-volume systems.
Deep expertise in writing and optimizing complex Stored Procedures, Functions, and database-driven workflows implementing critical business rules (payments, reservations, billing, fleet logic).
Experience designing database solutions for telematics/event-driven integrations, high-frequency data ingestion, status tracking, asynchronous processing patterns, and external system integrations.
Strong execution plan analysis, indexing strategies (clustered, non-clustered, filtered), deadlock resolution, and optimization for large-scale datasets.
Expertise in transaction isolation levels, locking behavior, blocking analysis, idempotent logic design, and designing systems resilient to high-concurrency workloads.
Experience with database versioning, migration scripting, CI/CD deployments, zero-downtime release strategies, and production troubleshooting in mission-critical environments.
Openness and willingness to learn emerging and rapidly changing agentic development methodologies.

Optional:

Experience with Unix development environments, and open systems databases, such as PostgreSQL.

Benefits

Mobility: Choose between monthly MILES credits or the Deutschlandticket.
Fitness: Enjoy a subsidized Urban Sports Club membership for your physical and mental well-being.
Discounts: Access 1,500+ providers for discounts on sneakers, theater visits, and more.
Home Office: Enjoy the flexibility of working from our office in Berlin and from home.
Retirement: Secure your financial future with our attractive pension plan.
Growth: We prioritize personal development through knowledge sharing and training opportunities (with the support from our HR Team and the Team Leads).
Social Impact: We dedicate a portion of our revenue to support regional social projects, actively contributing to the well-being of society and the environment. #milescharity

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Über uns

UNSERE WERTE
Unsere MILES Values to Win sind die Basis für unser daily doing und verbinden uns als Team. Sie beschreiben, wie wir miteinander und mit unseren Kund:innen umgehen.
Hier ein kurzer Einblick, was dich bei uns erwartet:

Leidenschaft: Sei du selbst, hab Spaß und stehe hinter dem, was du tust.
Eigenverantwortung: Setz dich ein für beste Lösungen und überrasche dich selbst.
Ideenreichtum: Sei pragmatisch und nutze zuerst das, was wir haben.
Neugier: Hinterfrage den Status quo und sei offen, ihn anzupassen.
Unterstützung: Unterstützt euch gegenseitig und bittet proaktiv um Hilfe.
Empathie: Versetz dich immer in die Situation anderer.

ÜBER MILES
Wir sind der führende Carsharing-Anbieter in Deutschland und bieten ebenfalls Auto-Abos an. Ein Teil unseres Umsatzes fließt in regionale und soziale Projekte. Bei MILES glauben wir an eine Welt, in der Mobilität geteilt, nachhaltig und für alle zugänglich ist. Mit unserem Angebot schaffen wir eine Alternative zum privaten Autobesitz, reduzieren die Anzahl der Fahrzeuge auf den Straßen und tragen positiv zum urbanen Leben bei.
Werde Teil unseres vielfältigen Teams, das Menschen aus über 80 Ländern mit unterschiedlichsten Erfahrungen und Ideen vereint.

NICE TO KNOW
Du hast noch keinen MILES Account? Mit dem Code: JOINUS15 erhältst du jetzt bei deiner Neuregistrierung 15€ Startguthaben. Enjoy the ride!

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Your application

We appreciate your interest in MILES Mobility GmbH. Please fill in the following short form. Should you have any difficulties in uploading your files, please contact us by mail at jobs@miles-mobility.com