Senior Backend Developer

Lodgify; España; Remote; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Remote work

25 days vacation

Health insurance

Annual offsite (Barcelona)

Job summary

Lodgify, a fast-growing scale-up in the vacation rental space, is seeking a Senior Backend Developer to own the booking core and financial logic within the Reservations Squad. You’ll drive end-to-end lifecycle features, real-time availability, and reliability improvements in a distributed C#/.NET environment.

Based in Barcelona with remote flexibility, you’ll mentor engineers, advance our event-driven architecture (RabbitMQ/Kafka) and perform zero-downtime migrations, shaping the platform for

Qualifications

• 7+ years of professional backend experience in C#/.NET
• 3+ years designing and operating distributed, event-driven architectures with RabbitMQ or Kafka
• Deep knowledge of databases and EF/EF Core; zero-downtime migrations on PostgreSQL or SQL Server
• Experience applying Domain-Driven Design (DDD), CQRS, onion/layered architectures, and ACL patterns
• Strong focus on testing, logging/APM instrumentation (Datadog), and idempotent design
• Mentor teammates, document architectures, and promote shared ownership of critical systems

Responsibilities

• Architect and evolve the booking core with end-to-end lifecycle, quotations, taxes, fees, and financial ledger logic
• Drive event-driven messaging and data fan-out across payments, messaging, and channel managers
• Lead architectural transition to EF Core 8/PostgreSQL with zero-downtime schema updates
• Decouple high-churn aggregates and strengthen cross-domain boundaries
• Optimize the calendar backend-for-frontend for real-time availability and anti-overbooking
• Improve reliability by defining SLOs and improving observability (Datadog)
• Mentor engineers through peer reviews and architectural documentation

Skills

Backend engineering

Event-driven

DDD & CQRS

Observability

Mentorship

Code reviews

Tools

RabbitMQ

Kafka

EF Core

PostgreSQL

SQL Server

Datadog

Job description

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.

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.

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?

All applications and CVs must be submitted in English