Senior Backend Engineer

⭐ Who we are   Lodgify is a fast-growing scale-up company leading the vacation rental industry. Backed by $30M in funding, our platform empowers property owners and managers worldwide to efficiently manage and grow their business through technology.   Headquartered in sunny Barcelona, we're now a team of 380+ people representing over 60 nationalities, united by a passion for transforming the future of short-term rentals. ⭐️ Role Overview As a Senior Backend Developer in our Reservations Squad, you will take ownership of the financially critical heart of Lodgify’s platform—the booking lifecycle, financial calculations, and real-time availability calendar. You will tackle technical challenges head-on by advancing our event-driven architecture and completing critical database migrations while playing a key role in raising the bar for engineering reliability and team mentorship. ⭐ How will you make an impact? • 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 our 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 makes you a great fit? • 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. ⭐ How can you earn extra bonus points? • Experience working in a microservices architecture. • Knowledge use of DevOps tech. (K8s, Docker, Helm, GCP, ...). Why you’ll love us: You’ll be part of a growing, dynamic company with a truly international team. At Lodgify, we are full of contagious energy, hard work, and passion for what we do. We celebrate diversity and are proud to acknowledge a variety of backgrounds, perspectives and skills in our team; committed to creating a workplace where everyone is heard and feels a sense of belonging.   What's in it for you? 🏠 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. 💸 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). 🖥️ 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! 🎯 Dynamic Hub: A high-energy, inclusive environment designed for collaboration and connection with a team that represents over 60 countries.   So, what are you waiting for? Apply now! All applications and CVs must be submitted in English 😉