Backend Engineer – Data Acquisition

About the Position

Backend Engineer – Data Acquisition

Barcelona, Spain

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At Lighthouse, we’re on a mission to revolutionize commercial strategy as hospitality’s most powerful AI platform. We transform the world's largest hotel data network into real-time intelligence that drives action. With $370M in Series C funding and over $100M in ARR, we are scaling at lightspeed. Our 850+ teammates across 35 countries leverage cutting-edge AI to help hoteliers be the first to act. Tens of thousands of hotels across 185 countries trust Lighthouse to execute their commercial strategy.

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Responsibilities

• Design, build, and improve backend systems for data acquisition that handle close to 200 million requests a day.
• Work on our in-house proxy layer and browser tooling: request routing, connection handling, and protocol-level behavior.
• Investigate hard crawler problems, test alternative approaches when one gets blocked, and turn what works into robust, reusable systems.
• Build clear interfaces and guardrails so other teams and AI agents can use what you build reliably.
• Own the quality of your code, including code written with AI assistance: tests, observability, and maintainability.
• Work closely with crawler engineers, DevOps, and Security to ship solutions that are secure and scalable.

Requirements

• Hands-on experience building, deploying, and running production backend services in a cloud environment.
• Experienced with a systems language such as Rust or C/C++, or a strong track record in another backend language and a real drive to go deep in Rust.
• Solid grasp of how the web works under the hood: HTTP, TCP/IP, TLS, and proxies.
• R&D mindset: Curious about how browsers and network stacks work internally, comfortable with ambiguity, and prefer to prove a hypothesis than assume it.
• Strong analytical and debugging skills. Comfortable with packet captures, profilers, and reading other people's source code.
• Communicate clearly, share your opinions, welcome feedback, and work well in a team.
• Fluent in English.

Technologies

• Rust
• TypeScript/Node.js
• Python
• Google Cloud
• Kubernetes
• Prometheus
• Grafana
• Claude Code

We Offer

• Flexible working environment: Work from home or at one of our global offices.
• Flexible time off: Autonomy to manage your work-life balance.
• Alan Healthy benefits: 160€/month for food or nursery.
• Payflow App: Access your earned salary in advance at no cost to you.
• Flexible retribution: Optional benefits through tax-free payroll deductions for food, transportation, and/or nursery.
• Wellbeing support: Subsidized up to 80% ClassPass subscription.
• Comprehensive health insurance: 100% Alan coverage for you, your spouse, and dependents.
• Collaborative team: High-bar, friendly, creative, and passionate colleagues.
• Career development: Workshops, frameworks, tools, training, and processes to realize your full potential.
• Impactful work: Shape products relied on by 85,000+ users worldwide.
• Competitive compensation: Proactively maintained to value your work.
• Referral bonuses: Earn rewards for bringing in new talent.

About the Company

We are Lumineers. Our shared values keep us on a collaborative path fostering a cultural and customer-centric environment.

• Pursuit of greatness: We’re innovators who care deeply about our customers’ success. Our team brings their best work, stays curious, and delivers excellence through attention to detail.
• Meaningful work matters: We make every moment count by knowing what to deliver, why it matters, and how it drives Lighthouse forward.
• Elevate each other: We don’t just work together - we grow together. What unites us is understanding each other as people and working toward shared goals.

We’re more than just a workplace – we’re a community. Collaborative, fun, and deeply committed, we work hard together to revolutionize the hospitality sector.

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Diversity, equity, inclusion, and belonging

Thank you for considering a career with Lighthouse. We are committed to fostering a diverse and inclusive workplace that values equal opportunity for all. We welcome candidates from all backgrounds, regardless of age, gender, race, religion, sexual orientation, and disability. Our commitment to equality is part of our culture. If you require reasonable accommodation at any point during the application or interview process, please notify your recruiter.

Not ticking every box? No problem! We value diverse backgrounds and unique skill sets, and we encourage individuals from all walks of life to apply. If your experience looks a little different from what we've described, but you're passionate about what we do and are a quick learner, we'd love to hear from you!