Senior Backend Engineer
Job description
Senior Backend Developer in Lodgify's Reservations Squad, owning the booking lifecycle, financial calculations and real-time availability calendar. The role focuses on event-driven architecture, database migrations and engineering reliability and mentorship.
At a glance
- Employment
- Full-time
- Work mode
- Remote · Spain
- Languages
- English
What you'll do
- Architect and evolve the booking core, managing the end-to-end lifecycle, quotes, taxes, fees, and financial ledger logic.
- Drive event-driven messaging using RabbitMQ outbox/inbox patterns and Kafka (Avro) to guarantee reliable data fan-out across payments, messaging, and channel managers.
- Lead the architectural transition from EF6/SQL Server to EF Core 8/PostgreSQL, executing zero-downtime schema updates that pave the way for continuous delivery.
- Decouple high-churn aggregates by strengthening anti-corruption boundaries and isolating cross-domain communication.
- Optimize the calendar backend-for-frontend service to deliver real-time availability and overbooking protection under strict latency requirements.
- Elevate system reliability by defining SLOs, implementing robust idempotency patterns, and refining observability in Datadog.
- Empower and mentor fellow engineers through constructive peer reviews, architectural documentation, and shared ownership of critical systems.
What we're looking for
- 7+ years of professional experience building scalable backend services in C# and .NET Core / .NET 8.
- 3+ years of proven hands-on experience designing and operating distributed, event-driven architectures with RabbitMQ or Kafka.
- Deep practical knowledge of database internals, Entity Framework / EF Core, and executing zero-downtime schema migrations on PostgreSQL or SQL Server.
- Experience applying Domain-Driven Design (DDD), CQRS, onion/layered architecture, and Anti-Corruption Layer (ACL) patterns.
- Strong focus on operational excellence, testing, logging/APM instrumentation (Datadog), and idempotency design.
- A collaborative mindset focused on mentoring teammates, writing clear documentation, and solving complex problems pragmatically.
Nice to have
- Experience working in a microservices architecture.
- Knowledge use of DevOps tech. (K8s, Docker, Helm, GCP, ...).
Your team
Reservations Squad
Benefits
Tax-Free Savings: Increase your take-home pay by using Flexible Remuneration for meal costs (up to €220/mo) and public transport (up to €136/mo).
Dynamic Hub: A high-energy, inclusive environment designed for collaboration and connection with a team that represents over 60 countries.
- Remote Flexibility: The freedom to work from home.
- Time to Recharge: 25 working days of paid vacation and Jornada Intensiva in August.
- Alan Health Insurance: Premium health, dental, and mental health support via Alan. Pre-existing conditions are covered.
- Home Office Gear: We provide a table, ergonomic chair, and monitor for your home setup.
- Language Learning: Free Spanish classes.
- Referral Program: Cash rewards for bringing in new talent.
- Annual Offsite: We bring the whole team together in Barcelona once a year for an unforgettable company offsite!
Apply
About Lodgify
Fast-growing scale-up company leading the vacation rental industry, backed by $30M in funding, whose platform empowers property owners and managers worldwide to efficiently manage and grow their business through technology.
Key facts
- 380+ people
- Barcelona
- vacation rental technology
- Backed by $30M in funding
- Team of 380+ people representing over 60 nationalities
- Headquartered in Barcelona
What they value
- Diversity
- Belonging
- Collaboration