Senior Backend Engineer
Company shown to members 🔒 · Remote · Spain only
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First recorded by Psst: 9 November 2026. Your first 3 jobs are free to apply to (the first right away, 2 more with your email). After that, the company and the apply link are for Psst members, from $4.99 for 7 days.
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The 20-second read
- Experience
- 7+ years required
- Where you can live
- Spain only
- Languages
- English, Spanish
- Skills and tools
- sql, c#, gcp, docker, churn, documentation
- Job type
- Full-time
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Job details
- Where you can work
- Spain
- Employment type
- Full-time
- Advertised pay
- Not stated by the employer
- Experience
- 7+ years required
- Employer publication date
- 28 March 2025
- First recorded by Psst
- 9 November 2026
- Last checked at the source
- 10 November 2026
About the job
⭐ Who we are
The company 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 the company’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 the company, 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 😉
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