[Hiring] Golang Software Engineer @Invia CEE x Travelplanet.pl x Wakacje.pl

Role Description

Join the App team behind Abindenurlaub, our travel app on iOS and Android, where users search hotels by destination, book trips, pay for them and keep track of what they have booked. Behind the app sits a Backend-for-Frontend (BFF) layer written in Go, and that layer is what you will own.

The BFF is the app's single doorway to the rest of the platform. Hotel search, booking, payment and trip management each live in their own services, run by other teams. The BFF calls those services, maps and reshapes their responses into the structures the Flutter app needs, and keeps the mobile side simple. Every new app feature touches this layer, so you will see the whole product rather than one corner of it.

This is a long-term, full-time position in a multinational team. Roughly half of your time goes into hands-on development and the other half into code review, API design with the mobile developers and shaping requirements with the product owner.

What lies ahead on your journey:

• Design, build and maintain BFF endpoints in Go that serve the Abindenurlaub iOS and Android apps.
• Integrate with the platform's domain services (hotel search, booking, payment, trip management) and map their data into the structures the app needs.
• Support and improve existing app features and implement new ones end to end on the backend side, from requirement to release.
• Work closely with the product owner to turn product ideas into clear technical scope and realistic estimates.
• Pair with the Flutter developers on API contracts so mobile and backend ship together.
• Review pull requests and give and receive constructive feedback; keep the codebase readable and tested.

Qualifications

• 3+ years of commercial Go development (backend services, not just scripts or CLIs).
• RESTAPIs: has built and maintained HTTP services; knows at least one framework (Echo, Gin, Chi).
• Experience with OpenAPI/Swagger is a big plus.
• gRPC / Protocol Buffers: has used them as a client or server in a real project.
• Go concurrency: goroutines, channels, sync.WaitGroup, mutexes, context with timeout and cancellation.
• Error handling: wrapping errors (%w), errors.Is / errors.As, custom error types.
• Unit tests with mocks: table-driven tests, testify, generated mocks (mockery or gomock).
• Docker — confident; Kubernetes — basic understanding (Deployment, ConfigMap, probes); CI/CD — has worked with GitLab CI, GitHub Actions or similar.
• AWS: S3, Lambda, IAM roles.
• Integrating with other services: timeouts, retries, mapping and aggregating data from multiple sources.

Requirements

• Helm, a service mesh (Linkerd or Istio), HashiCorp Vault for secrets.
• Observability: OpenTelemetry, Datadog, Prometheus, Grafana; structured logging (zerolog, zap).
• BFF or API gateway for mobile clients; API versioning and backward compatibility with older app versions.
• Travel or e-commerce domain: booking, checkout, payments.
• Code quality: golangci-lint, SonarQube.
• In-memory caching (TTL cache), worker pools, request deduplication.
• Ansible.
• Flutter: familiar with Flutter development and able to support the mobile team when needed.

Benefits

• A remote working model, with a commitment to work from the office at least once a quarter.
• Opportunities for professional development aligned with current business needs and your individual career goals.
• A benefits cafeteria platform – we do not decide what suits for you, you can choose from life insurance, a sports card, and lunch and shopping vouchers.
• Cooperation in international environment.
• Access to Audioteka and Pilot WP, helping you balance personal development with moments of relaxation.
• An openness to innovation and AI-powered tools that support our daily work and help us achieve even better results.
• Discounts on our products for you, your family, and friends.
• Comfortable offices in convenient locations (Gdańsk – Alchemia, Warsaw – Business Garden, Wrocław – Legnicka Business Garden), along with a friendly and informal atmosphere that encourages collaboration.
• Option to join International educational trips, so you can see the destinations and hotels from our portfolio for yourself.
• A culture built on trust, open communication, feedback, and appreciation (because the best journeys begin with a great team).
• Team where #Explore #Engage #Enjoy build our travel mindset.