Senior Python Engineer (m/f/d) - Network Planning
At Flix, we offer a tech-driven environment where innovation meets real-world impact, with competitive pay, strong growth opportunities, and a culture of collaboration and ownership.
We're looking for an experienced Senior Python Engineer (m/f/d)to join our Supply Division. You'll make an impact by taking ownership of core backend systems that power our network planning optimization product. Your work will directly support network planners in scheduling vehicles, drivers, and timetables — improving travel experiences for millions of passengers while driving profitability.
Our team builds and maintains an optimization platform addressing use cases from vehicle and driver scheduling to timetable optimization. We follow modern system design — Domain-Driven Design, Hexagonal Architecture, and SOLID principles — with strict architectural boundaries enforced by tooling. Our backend workloads (APIs, event consumers, Kubernetes jobs) are built to scale with high code quality standards.
The product's algorithm engine is developed by Operations Research Engineers using mathematical optimization. As a Senior Python Engineer, you will own the engineering shell around these algorithms: the APIs, use cases, data pipelines, infrastructure, and the domain models that connect optimization output to the rest of the system.
Our current tech stack and toolset include:
- Python, TypeScript, Shell scripting
- Flask, React, Pytest
- PostgreSQL, Confluent Kafka, DataDog, Honeycomb
- Amazon RDS/S3/CloudFront/SecretsManager, Terraform (Terragrunt)
- GitLab, Kubernetes, Docker, Azure AD
About the Role
- Own and evolve the backend: APIs, use case layer, domain models, serialization, and event-driven pipelines (Kafka)
- Take engineering ownership of new product modules — designing the architectural scaffold, wiring layers, and ensuring clean boundaries
- Build and maintain infrastructure: Kubernetes deployments, CI/CD pipelines, and cloud resources (AWS)
- Collaborate closely with Operations Research Engineers to integrate optimization algorithms into the product
- Contribute to architecture decisions and uphold code quality through reviews, testing, and continuous improvement
- Write well-tested, self-documenting code following hexagonal architecture patterns
- Share your expertise and mentor colleagues, promoting a culture of knowledge sharing and learning
- Work in an AI-augmented development workflow — actively using code agents and AI assistants as a natural part of how you ship software
About You
- Academic background in Computer Science or equivalent
- 5+ years of experience in backend software engineering with Python
- Experience applying clean architecture principles (hexagonal, ports-and-adapters, DDD) or similar approaches in production — able to contribute from day one
- Experience with relational databases (PostgreSQL) and event-driven systems (Kafka or similar)
- Strong experience in AI-augmented development — actively using code agents or AI assistants in daily work
- Solid experience with containerization (Docker, Kubernetes) and CI/CD pipelines
- Familiar with testing best practices: unit, integration, acceptance testing
- Experience with cloud platforms (AWS or similar) and infrastructure as code (Terraform)
- Experience with modern front-end stack (some basic front-end tasks are part of our scope)
- Familiarity with mathematical optimization or data-intensive applications is a plus
We recognize that everyone carries a unique set of valuable skills and experiences. If you think you could have an impact even though you don't meet 100% of the requirements, we still encourage you to apply. We want to hear from you!
What We Offer
- Travel perks : 12 free Flix vouchers + 12 discount vouchers for friends & family.
- Work from (M)Anywhere : Depending on your role, work from another location for up to 60 days per year.
- Hybrid work model : We are an office-first company, but we offer flexibility to balance work and life.
- Wellbeing support : Access confidential 1:1 counselling, courses, and stress management for yourself and up to four family members.
- Learning & Development : Take advantage of language classes, training courses, and expert-led sessions to grow your skills.
- Mentoring Program : Connect with experienced colleagues to gain insights and accelerate your career.
To view more local benefits specific to each office location, please check out this link: Locations - Flix Career
Why Join Flix?
At Flix, we empower our teams to push boundaries and shape the future of mobility. As we continue to scale globally, we harness cutting-edge technology to make mobility smarter, more sustainable, and more affordable.
If you're looking for a place where you can drive change and redefine how millions of people travel, Flix is the place where you can lead your journey!
Empfohlene Jobs
Servicekraft / Spülkraft (m/w/d) für ein Altenheim gesucht
Ab sofort suchen wir eine fleißige Servicekraft (m/w/d) für unseren Arbeitgeber in Berlin. Sie werden in einem Altenheim arbeiten. Sie bekommen eine Festanstellung und einen übertariflichen Stunden…
Initiativbewerbung als Weiterbildungsassistent*in / Assistenzarzt*ärztin in der Wiegmann Klinik / Psychosomatik / Psychotherapie
DRK Kliniken Berlin Initiativbewerbung als Weiterbildungsassistent*in / Assistenzarzt*ärztin in der Wiegmann Klinik / Psychosomatik / Psychotherapie Die Wiegmann Klinik, psychosomatische Klinik de…
Senior Risk Specialist as IT VS-Verwalter (f/m/d)
We help the world run better At SAP, we enable you to bring out your best. Our company culture is focused on collaboration and a shared passion to help the world run better. How? We focus every da…
Kaufmann/-frau Einzelhandel Kfz Teile und Zubehör
In Ihrer Ausbildung erlernen Sie die Fertigkeiten um z.B. nachstehende Arbeiten ausführen zu können Kaufleute im Einzelhandel erledigen bei uns speziell Aufgaben in der Disposition, der Beschaffun…
Strategischer IT-Einkäufer / Software-Einkäufer (m/w/d) - befristet
Im Zuge der Krankheitsvertretung einer Vollzeitstelle müssen generell Aufgaben des Facheinkaufs übernommen werden: Durchführung von Angebotsanfragen, einfachen Markterkundungen und transperente Str…
Social Media Dispatcher (m/w/d) im Home-Office - bis zu 280€ täglich möglich
Einleitung Sie finden bei uns Jobs in allen Branchen und Qualifikationsstufen, egal ob Berufsanfänger, Wiedereinsteiger oder als erfahrene Fach- und Führungskräfte in der Produktion oder in den ka…
IT-Security Engineer (Senior) (w/m/d) - Netzwerk Security Engineer
Die Cyber Curriculum GmbH ist eine hochspezialisierte Unternehmensberatung im Tätigkeitsbereich IT- und Informationssicherheit, Datenschutz, Business Continuity Management, SIEM/SOC, künstliche Intell…
Steuerfachangestellte / Steuerfachwirt (m/w/d)
Steuerfachangestellte / Steuerfachwirt (m/w/d) in moderner und digitaler Kanzlei Keine Lust mehr jeden Tag ins Büro zu pendeln? Steuer-Pioniere hat den Job im Steuerbüro mit ausgewogenen Anteilen i…
TGA-Planer HLSK (m/w/d) am Standort Berlin
Bei der Unternehmensgruppe dieBauingenieure setzen wir auf ein starkes Team, in dem jeder Einzelne zählt und Verantwortung übernimmt. Unser Fokus liegt auf nachhaltigem Bauen und zukunftsorientiertem…
Mitarbeiter Konferenz- und Veranstaltungsservice (w/m/d)
Die Bundesnotarkammer ist eine Körperschaft des öffentlichen Rechts mit Sitz in Berlin. Sie vertritt die deutschen Notarinnen und Notare national und international, wirkt in Gesetzgebungsverfahren so…