Staff Software Engineer (Booking Integrations) (Kilo grupė, UAB)
Darbdavys: Kilo grupė, UAB
Miestas: Vilnius
Paskelbta: 2026-10-25
💶 6000 - 8000 €/mėn. Prieš mokesčius · visa darbo diena · nuotolinis darbas: hibridinis · paskelbta 2026-10-06
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Job description:
We are a fast-scaling travel startup with strong product-market fit, a generational traveltech company looking to disturb this sleepy industry. We are two-sided: travelers get a consumer product that helps them plan and book trips, and advisors get a SaaS-style subscription with certification and qualified leads in the offer.
We’re looking for the first developers to join a fast-growing travel startup that’s already found strong product-market fit and is now ready to scale.
This is not a role for someone who wants to manage agencies, coordinate stakeholders, or spend weeks building presentations. We’re looking for a builder – someone who can design a schema for breakfast, build a sandbox environment for lunch, load test it before dinner, and wake up excited to get it ready for prod the upcoming week.
You’ll work directly with the founder and early team, own growth from day one, and help shape what the product looks like as the company scales. Work-life balance can look different in a fast-moving company that’s on a mission to make a real impact.
Ready to apply?
Jump to the application form and start your journey with us.
Design, build, and own integrations with third-party booking systems such as suppliers, booking platforms, and partner APIs, covering everything from modern REST/OAuth APIs to legacy SOAP services.
Architect the webhook ingestion and worker queue infrastructure that keeps bookings, availability, and status updates flowing reliably at scale.
Design database schemas in Supabase (PostgreSQL) that model complex booking data cleanly and hold up as volume grows.
Build sandbox and testing environments so integrations can be developed, validated, and debugged safely before they reach production.
Load test and harden services, finding bottlenecks and failure points before customers do.
Take integrations from prototype to production: monitoring, alerting, retries, idempotency, and graceful handling of flaky third-party systems.
Make sure credentials, tokens, and traveler data are handled securely across every integration.
Help evolve our TypeScript, Supabase, and TanStack MVP into a scalable, production-grade platform, and make key architectural decisions along the way.
Work directly with the founder and early team to decide which integrations matter most for travelers and advisors, and ship them fast.
Set the engineering standards, patterns, and practices that future developers will build on as the team grows.
Requirements:
Strong software engineering fundamentals, with deep experience in Authentication & Identity and Backend Software Engineering (PostgreSQL, PHP/Laravel, Node.js/TypeScript).
Expert-level understanding of API authentication across many integration styles, including:
OAuth 2.0 (authorization code, client credentials, PKCE, refresh token rotation) and OIDC
SOAP APIs, including WS-Security, XML signatures and certificate-based authentication
REST API auth patterns such as API keys, HMAC request signing, JWT…
We are a fast-scaling travel startup with strong product-market fit, a generational traveltech company looking to disturb this sleepy industry. We are two-sided: travelers get a consumer product that helps them plan and book trips, and advisors get a SaaS-style subscription with certification and qualified leads in the offer.
We’re looking for the first developers to join a fast-growing travel startup that’s already found strong product-market fit and is now ready to scale.
This is not a role for someone who wants to manage agencies, coordinate stakeholders, or spend weeks building presentations. We’re looking for a builder – someone who can design a schema for breakfast, build a sandbox environment for lunch, load test it before dinner, and wake up excited to get it ready for prod the upcoming week.
You’ll work directly with the founder and early team, own growth from day one, and help shape what the product looks like as the company scales. Work-life balance can look different in a fast-moving company that’s on a mission to make a real impact.
Ready to apply?
Jump to the application form and start your journey with us.
Design, build, and own integrations with third-party booking systems such as suppliers, booking platforms, and partner APIs, covering everything from modern REST/OAuth APIs to legacy SOAP services.
Architect the webhook ingestion and worker queue infrastructure that keeps bookings, availability, and status updates flowing reliably at scale.
Design database schemas in Supabase (PostgreSQL) that model complex booking data cleanly and hold up as volume grows.
Build sandbox and testing environments so integrations can be developed, validated, and debugged safely before they reach production.
Load test and harden services, finding bottlenecks and failure points before customers do.
Take integrations from prototype to production: monitoring, alerting, retries, idempotency, and graceful handling of flaky third-party systems.
Make sure credentials, tokens, and traveler data are handled securely across every integration.
Help evolve our TypeScript, Supabase, and TanStack MVP into a scalable, production-grade platform, and make key architectural decisions along the way.
Work directly with the founder and early team to decide which integrations matter most for travelers and advisors, and ship them fast.
Set the engineering standards, patterns, and practices that future developers will build on as the team grows.
Requirements:
Strong software engineering fundamentals, with deep experience in Authentication & Identity and Backend Software Engineering (PostgreSQL, PHP/Laravel, Node.js/TypeScript).
Expert-level understanding of API authentication across many integration styles, including:
OAuth 2.0 (authorization code, client credentials, PKCE, refresh token rotation) and OIDC
SOAP APIs, including WS-Security, XML signatures and certificate-based authentication
REST API auth patterns such as API keys, HMAC request signing, JWT…