{"id":2546695,"url":"https://alion.io/job/kayak-java-senior-software-engineer-k4b-directs","title":"Java Senior Software Engineer, K4B Directs","company":{"id":3573,"name":"KAYAK","domain":"kayak.com","url":"https://alion.io/company/kayak","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"C","score":69,"open_postings":4,"ghost_share":0.25,"stale_share":0.5,"repost_share":0.25,"time_to_fill_p50_days":41,"computed_at":"2026-10-14T06:34:16Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Vilnius, Lithuania"],"countries":["LT"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":3330,"max":6660,"currency":"EUR","period":"month","gross":true,"usd_annual":88884},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Java","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"Spring Framework","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-14T14:38:32Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-15T03:39:54Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"KAYAK, part of Booking Holdings (NASDAQ: BKNG), is a leading travel search engine. With billions of queries across our platforms, we help people find their perfect flight, stay, rental car and vacation package. We're also transforming business travel with a new corporate travel solution, KAYAK for Business.\nAs an employee of KAYAK, you will be part of a travel company that operates a portfolio of global metasearch brands including momondo, Cheapflights and HotelsCombined, among others. From start-up to industry leader, innovation is in our DNA and every employee has an opportunity to make their mark. Our focus is on building the best travel search engine to make it easier for everyone to experience the world.\nAt KAYAK for Business (K4B), we're building the future of corporate travel technology - and the engineering teams behind it are at the heart of that mission. Our K4B engineering team in Lithuania is growing, and we're looking for a Senior Java Backend Developer to help design, build, and own our direct supplier integrations. The Direct team connects K4B straight to airlines and other travel suppliers, bringing business travelers content, fares, and services that go beyond what traditional channels offer, across search, booking, and servicing. You will help shape the team's technical direction, take on some of our hardest integration and reliability problems, and support other engineers as they grow.\nThis role requires working from our Vilnius office at least 3 days per week.\nIn this role you will:\nLead the design and delivery of new direct supplier integrations, from reading partner documentation to production rollout.\n\nOwn the quality and reliability of live integrations - monitoring them, diagnosing production issues, and handling gaps between a supplier's documentation and its real behavior.\n\nEvaluate the user and business value of work before committing to build, and track success metrics after release.\n\nBuild and evolve integrations with third-party APIs (SOAP/XML, REST, and proprietary protocols), handling their quirks, rate limits, and failure modes.\n\nDesign for suppliers that differ widely in protocols, data models, and reliability, while keeping our own model clean and consistent.\n\nAct as a point of contact with partners on integration issues: investigate problems, agree on solutions, and follow tickets through to resolution.\n\nContribute to technical decisions: write design documents, review architecture and code, and help set standards for quality and testing.\n\nSupport mid-level and junior engineers through code reviews, pairing, and technical guidance, and work with product, QA, and partner teams on scoping and rollout.\n\nUse AI coding tools as part of your day-to-day workflow - AI-assisted development is a normal part of how our team works.\n\nPlease apply if you have:\nEducation in Computer Science or a related field, or equivalent practical experience.\n\nSignificant hands-on experience with Java, including designing and operating production backend systems.\n\nStrong experience with the Spring framework and SQL databases.\n\nExperience integrating with third-party systems and working directly with their providers on communication, troubleshooting, and ticket escalation.\n\nExperience onboarding new partners or suppliers onto an existing platform.\n\nA track record of leading projects end to end and supporting the growth of other engineers.\n\nFluent English communication skills.\n\nComfort working in a hybrid model, with at least three office days per week.\n\nBonus skills:\nExperience with airline direct-connect or NDC APIs.\n\nKnowledge of the travel domain: fares, offers and orders, ancillaries, ticketing.\n\nExperience with API certification or supplier testing programs.\n\nFamiliarity with AI coding tools and interest in using them to accelerate development.\n\nBenefits and Perks\nWork from (almost) anywhere for up to 20 days per year\n\nFunds for your career growth\n\nAccess to thousands of on-demand e-learnings\n\nGenerous additional Health Insurance\n\nFlexible sick time off\n\nAdditional financial support for your sick leave\n\nAdditional day off on your birthday\n\nCompany-wide vacation week once a year (winter holidays)\n\nAdditional financial support during parental leave\n\nFree lunch twice a week and daily snacks at the office\n\nFree yoga twice a week\n\nPaid volunteering time\n\nNo meeting Fridays\n\nOffice and team events such as summer camp, KAYAK birthday, winter party and more!\n\nCompany-paid therapy sessions through SpringHealth\n\nCompany-paid subscription to HeadSpace\n\nInternal Communities\n\nCompensation\nSenior Java Backend Developer salary consists of three elements:\nBase pay: from 3330 EUR up to 6660 EUR gross monthly.\nIn addition:\nSignificant yearly bonuses, approx 10 percent of annual salary\n\nBooking Holdings RSU (Restricted Stock Units) package, worth [amount] gross, with possibility to receive yearly refreshes\n\nInclusion\nAt KAYAK, we want everyone to have the space to grow, share ideas and do great work. That's why we're focused on hiring the best talent from all walks of life and experiences, supporting them well and making sure no one feels like they have to fit a mold to belong here.\nNeed any adjustments for the interview, application or on the job? No problem - just give us a heads-up. We've got you.","description_format":"text","description_chars":5292,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Health insurance","Parental leave","Restricted stock units"],"hiring_locations":[{"name":"Lithuania","iso":"LT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Travel Agencies","Price Comparison","Travel Technology"],"lifecycle":[{"event":"open","at":"2026-10-14T17:01:56Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":38,"reasons":["conf:1","win:early"],"computed_at":"2026-10-15T05:23:59Z"},"pay":{"stated_usd_annual":88884,"is_top_pay":false},"html_url":"https://alion.io/job/kayak-java-senior-software-engineer-k4b-directs","json_url":"https://alion.io/job/kayak-java-senior-software-engineer-k4b-directs.json","meta":{"generated_at":"2026-10-15T05:23:59Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":7871,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3573},"rest":"https://alion.io/mcp/rest/get_company?id=3573"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fkayak-java-senior-software-engineer-k4b-directs"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fkayak-java-senior-software-engineer-k4b-directs"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fkayak-java-senior-software-engineer-k4b-directs"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/kayak-java-senior-software-engineer-k4b-directs\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fkayak-java-senior-software-engineer-k4b-directs"}]}