Backend Engineer (m/f/x)

Travelcircus GmbH; Berlin; On-site; EUR 65,000 - 95,000; Full time

Benefits offered by this job

Flexible working hours

Remote work 2 days a week

Loft office near Alexanderplatz

Flat hierarchies & team meetings

Onboarding program & ongoing training

Travel BVG ticket discounts

Job summary

Travelcircus GmbH is seeking an experienced Backend Engineer (m/f/x) to join our development team in Berlin. You will build and extend our Platform Services and Booking Systems, and develop a robust transactional API used by internal teams and third parties.

Ideal candidates have 4+ years of backend development, strong PHP/OOP and SQL skills, experience with AI tools like Claude/Codex, and familiarity with Agile environments.

Qualifications

• 4+ years of backend development experience.
• Proficient in PHP / OOP and relational databases.
• Experience with API development and SOA.
• Familiar with AI agents (Claude or Codex) and AI tools.
• Strong SQL skills and ability to write/debug queries.
• Experience on Linux/macOS CLI and Agile environments.
• English fluency; German is a plus.

Responsibilities

• Build and extend platform services and booking systems.
• Develop, maintain and scale a robust API platform used internally and by 3rd parties.
• Work with AI-assisted development approaches and tools.
• Participate in code reviews and pair programming.
• Improve existing codebase used by thousands of users daily.
• Address bugs and performance issues.

Skills

PHP / OOP

SQL

AI tools familiarity

Agile methodologies

English fluency

Linux/macOS CLI

Education

No degree specified

Tools

Elasticsearch

Message queues

Claude/Codex

Job description

Intro

Do you love traveling and are you ready for new challenges in an ambitious, fast-growing and committed company? Then you've come to the right place! Start your career with us as:

Backend Engineer (m/f/x)

Your responsibilities

Travelcircus is seeking an experienced (4+ years)Backend Engineer (m/f/x)to join the development team. We're looking for someone who's passionate about building robust & scalable technology platforms, systems and APIs. You'll be an integral part of the engineering team and will work closely with others throughout our company to deliver the best possible product to our customers. Ideal candidates will have experience with PHP, AI supported software engineering, API development and Service-Oriented Architectures.

Things you will work on

• Building and extending our Platform Services and Booking Systems
• Designing, developing, and maintaining a robust transactional API platform, that will be used internally and directly by 3rd parties
• Keeping up with the state-of-the-art of AI assisted development and applying it to everyday tasks
• Participating in code reviews and pair programming
• Improving our existing platform codebase which is used by tens of thousands of users on a daily basis
• Addressing bugs and performance issues

What we offer

• FLEXIBLE WORKING HOURS thanks to part-time and flexitime models as well as remote work (2 days a week)
• ATTRACTIVE WORK ENVIRONMENT close to Alexanderplatz in a stylish loft office with start-up flair, cooking together, fun & cohesion in a varied working environment and regular team events
• TRANSPARENT COMMUNICATION thanks to flat hierarchies, fixed feedback cycles and weekly company and team meetings
• OPTIMAL CAREER OPPORTUNITIES thanks to a comprehensive onboarding program and individual induction, continuous on-the-job training, optimal promotion and further development opportunities
• ADDITIONAL COMPENSATION & DISCOUNT on the BVG company ticket (local public transport) and discounts with over 800 other providers
• PERSONAL TRAVEL BUDGET of €1080 per year to spend freely on our entire product portfolio
• WORK LIFE BALANCE with 28 vacation days, increasing per year of service, with up to 35 days of vacation entitlement as well as company health management and a pension plan

Your profile

• Experience in building web applications and distributed web services (4+ years)
• Knowledge of PHP / OOP, relational databases and data modelling
• Good understanding of SQL and the ability to write and debug queries
• Experience with common AI agents like Claude or Codex;
• Knowledge of current AI tools, best practices, knowing what is hype and what is useful
• Experience with Linux/macOS command line
• Experience using message queues and Elasticsearch is a plus
• Strong visual, verbal and written communication skills, fluency in english, german is a plus
• Experience working in Agile environments

Team Travelcircus

Over the past few years, Travelcircus has developed into an international company with over 100 highly motivated and committed employees who form the basis of our success. If you would like to get to know our team, then take a look at ourInstagram Career page - there you will get a first impression of your future colleagues.

We expressly declare that we welcome everyone, regardless of gender, nationality or ethnic origin, religion or ideology, disability, age or sexual identity.

We look forward to meeting you!