Senior Java Backend Developer (Traveltech)

TL;DR

Senior Java Backend Developer (Traveltech): Building and maintaining high-performance search and booking integrations for corporate travel solutions with an accent on API design, system scalability, and enterprise-grade reliability. Focus on optimizing search logic, managing complex third-party integrations, and ensuring modular architecture for the hirify.global for Business platform.

Location: Must be based in Berlin and able to work from the office at least 3 days per week.

Company

hirify.global is a leading global travel search engine and part of Booking Holdings, dedicated to simplifying travel planning through innovative technology.

What you will do

• Optimize search and booking logic to meet the demands of global corporate clients.
• Build and maintain high-performance integrations with third-party airline, hotel, and rental car APIs.
• Take full ownership of designs from initial concept through to deployment.
• Maintain high standards for code quality, performance, and system modularity.
• Participate in code reviews and architectural steering to support enterprise expansion.

Requirements

• 5+ years of professional experience in Java development.
• Strong proficiency with the Spring ecosystem (Spring/Spring Boot).
• Hands-on experience with relational (SQL) and NoSQL databases like PostgreSQL, MySQL, or Redis.
• Strong English communication skills.
• Ability to design and implement engineering initiatives with minimal guidance.

Nice to have

• Prior experience in the travel domain, specifically with GDS (Amadeus, Sabre, Travelport) or NDC standards.
• Experience with B2B systems, identity management, or HR integrations (SCIM, SAML/OAuth, SSO, Workday, Okta).

Culture & Benefits

• Hybrid work model with an office in Friedrichshain, Berlin.
• 6 weeks of paid vacation plus additional time off for birthdays and a company-wide recharge week.
• Comprehensive mental health support including company-paid therapy and HeadSpace subscription.
• Career growth resources including development budgets and leadership training.
• Practical perks: free lunch twice a week, pension contributions, public transport subsidies, and bike leasing.