Senior Software Engineer

How to use this kit

Ground every answer in facts on this page and the original listing. We never invent Glassdoor-style reviews or salaries that are not in our data.

Interview prep

Prepare system-design and requirements trade-off examples, plus how you coordinate installs or changes with other teams. Tie answers to building reliable services for a travel platform like Flix.

Fit summary

Best fit if you have senior software depth, comfort designing within constraints, and want Berlin-based (non-remote) work on Flix’s travel technology.

Day in the role

As a Senior Software Engineer at Flix in Berlin, you would turn product needs into feasible designs under time and cost limits, align with analysts and engineers on interfaces and performance, and help plan installs or changes. Day-to-day work tracks O*NET software-developer tasks: clarifying requirements, coordinating system updates, and keeping stakeholders informed on status and technical trade-offs.

Skills to emphasize

• freeCodeCamp — Full Stack curriculum — free
• Saylor Academy — Computer Science courses — free
• CS50 (Harvard, via edX) — free to learn
• Microsoft Learn — developer training paths — free to learn

FAQ from this listing

Is this role remote?

No. The listing is Berlin, Germany, with remote set to off.

What hard facts are known about Flix?

Domain flixbus.com, founded 2013, about 1,000 employees; news also notes Klarna travel partnerships involving Flix.

Which certs or courses match this path?

freeCodeCamp and Saylor CS are free; CS50 and Microsoft Learn paths are free to learn.

Occupation tasks (O*NET)

Public-domain labor data — prepare examples for 2–3 of these.

• Analyze information to determine, recommend, and plan installation of a new system or modification of an existing system.
• Analyze user needs and software requirements to determine feasibility of design within time and cost constraints.
• Confer with data processing or project managers to obtain information on limitations or capabilities for data processing projects.
• Confer with systems analysts, engineers, programmers and others to design systems and to obtain information on project limitations and capabilities, performance requirements and interfaces.
• Consult with customers or other departments on project status, proposals, or technical issues, such as software system design or maintenance.
• Coordinate installation of software system.
• Design, develop and modify software systems, using scientific analysis and mathematical models to predict and measure outcomes and consequences of design.
• Determine system performance standards.

O*NET source

Company facts (cached)

Website: flixbus.com

Public cache only — not an employee review.

Role overview (listing rewrite)

Senior Software Engineer (m/f/d)FlixBerlin, Berlin, Germany What This Role Involves In this role at Flix, you will join our high-impact team Orion – Supply Division and contribute to the future of mobility operations. You'll take full ownership in developing and continuously evolving a mature, stable product while tackling complex architectural challenges, reducing manual processes, and exploring AI-driven solutions. Responsibilities Collaborate with a distributed, self-organized cross-functional team to develop and maintain critical products at the heart of Flix's ecosystem. Take ownership in product and technical decisions that directly impact the business. Work on backend development using Java, Spring / Spring Boot, Kafka, and databases like MongoDB (DocumentDB), MySQL / Postgres (RDS), Redis (Elasticache). Leverage cloud services such as AWS, S3, DevOps/Infrastructure tools including Kubernetes, Docker, Gitlab CI, Terraform. Implement microservices architecture, event-driven systems, and distributed system design. Who We're Looking For We are seeking a skilled Senior Software Engineer with experience in backend development, databases, cloud services, DevOps/Infrastructure, and microservices architecture. You should enjoy working in a collaborative, self-organized team where engineers have a genuine voice and are excited about solving complex problems at scale. More About Flix Flix offers a tech-driven environment where innovation meets real-world impact. Our culture of collaboration and ownership provides strong growth opportunities and competitive pay. We maintain and continuously evolve a mature, stable product while simultaneously pushing it forward to reduce manual processes and explore AI-driven solutions. Ready to Apply? To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there.

Full job on Get A Job.AI

Questions to ask them

• What does success look like in the first 90 days for this role?
• How is the team structured, and who would I work with most?
• What tools and systems does this role use daily?
• Is the work primarily based in Berlin, Germany, hybrid, or fully remote?