Customer Solutions Engineer (Java/SaaS)

Location: Barcelona, Spain; hybrid model with 4 days in the office and 1 day working from home

Company

Caravelo builds SaaS technology for airline subscription products, combining payments, booking systems, and airline integrations on one platform.

What you will do

• Translate airline customer requirements into production-ready implementations with Project Managers and customer stakeholders.
• Configure and extend the Caravelo platform without modifying or forking its core.
• Build and maintain customer plugins containing integrations, business rules, and customer-specific logic.
• Integrate airline reservation systems, payment gateways, identity platforms, CRM, loyalty, data platforms, and legacy systems.
• Take implementations through development, testing, launch, stabilization, and ongoing production support.
• Investigate incidents, maintain integrations, and deliver migrations or connector replacements without destabilizing customer services.

Requirements

• Strong professional experience building production software in Java with solid backend engineering fundamentals.
• Experience designing and integrating APIs, distributed services, and cloud-based systems.
• Strong debugging and problem-solving skills across multiple systems and external dependencies.
• Understanding of testing, CI/CD, databases, observability, and production software quality.
• Ability to extend an existing platform cleanly rather than rebuilding it from scratch.
• Strong communication skills for working with Project Managers, engineers, and technical customer stakeholders.

Nice to have

• Experience in Professional Services, implementation engineering, solutions engineering, or customer-facing technical delivery.
• Experience with enterprise or legacy systems, payments, payment gateways, or data migrations.
• Experience in travel technology, airlines, reservation systems, or other integration-heavy industries.
• Familiarity with Vue, Nuxt, Couchbase, or Datadog.
• Experience in security, compliance, or reliability-sensitive environments.

Culture & Benefits

• Flexible working hours and a Barcelona-based hybrid work model.
• Tax-efficient benefits including private health insurance, restaurant and transport cards, and kindergarten support.
• Training and conference budget.
• 23 days of annual leave plus regular company events.
• Opportunity to work across software engineering, integrations, and real customer implementations.
• Use of AI coding tools such as Claude Code, Cursor, and Devin, with an emphasis on Spec-Driven Development and engineering judgment.

Hiring process

• The process usually takes 3–4 weeks and includes an introductory call, Hiring Manager interview, practical take-home assessment, team interview, and founder interview.