KAYAK

Software Architect, Java

KAYAK

full-time

Posted on:

Location Type: Hybrid

Location: Berlin • Germany

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Job Level

SeniorLead

Tech Stack

AzureDistributed SystemsJavaMySQLPostgresRedisSpring

About the role

  • Ensure the search and booking logic maintains optimal performance under the rigorous demands of global enterprise clientele.
  • Lead the design of high-performance, fault-tolerant integration frameworks for third-party APIs (NDC, GDS, and proprietary provider protocols), prioritizing low-latency execution and high availability.
  • Serve as a primary consultant for multiple engineering squads, providing clarity on complex architectural trade-offs and ensuring technical consistency across the K4B ecosystem.
  • Spearhead initiatives to improve the engineering lifecycle, from establishing sophisticated observability patterns and CI/CD matures to refining internal standards for code quality and distributed system design.
  • Translate high-level business objectives into robust technical specifications, effectively communicating architectural risks and opportunities to executive leadership.

Requirements

  • A minimum of 9 years of professional software development experience, with a significant portion dedicated to the large-scale distributed systems.
  • Expert-level mastery of the Java ecosystem and Spring Framework (Boot, Security).
  • Expertise in designing for high-throughput data environments using PostgreSQL, MySQL, and Redis.
  • Good command of the English language
  • Understanding of airline distribution standards, specifically NDC (New Distribution Capability) and legacy GDS (Amadeus, Sabre) protocols.
  • Knowledge of B2B integration patterns including SAML, OAuth2, OIDC, and SCIM for automated user lifecycle management via Okta, Workday, or Azure AD.
  • Previous experience with AI/LLM would be a plus.
Benefits
  • Work from (almost) anywhere for up to 20 days per year
  • Focus on mental health and well-being:
  • Company-paid therapy sessions through SpringHealth
  • Company-paid subscription to HeadSpace
  • Company-wide week off a year - the whole team fully recharges (and returns without a pile-up of work!)
  • No meeting Fridays
  • Paid parental leave
  • Generous paid vacation + time off for your birthday
  • Paid volunteer time
  • Focus on your career growth:
  • Development Dollars
  • Leadership development
  • Access to thousands of on-demand e-learnings
  • Travel Discounts
  • Employee Resource Groups
  • 6 weeks paid vacation
  • Free lunch 2 days per week
  • Pension plan contributions
  • Public transportation subsidies
  • Bike leasing program
  • Monthly social events, Thursday happy hours, sports teams
  • An awesome office in Friedrichshain, Berlin
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
JavaSpring FrameworkPostgreSQLMySQLRedisCI/CDdistributed systemsobservability patternsB2B integration patternsAI/LLM
Soft Skills
communicationleadershipconsultingarchitectural trade-offsclaritytechnical consistencytranslating business objectivesrisk communication