Senior Backend Engineer Lisboa

Overview

Senior Backend Engineer - Node. js, Type
Script

If you’re looking for a fully remote role with flexible hours, unlimited time off, and the chance to design products used by millions of people, this one’s for you

At Blue
Throne, we don’t just build apps. Wescale indie mobile products into global powerhouses. With 80M+ downloads, 20M+ MAU, and $14M+ ARR - we’re rewriting the rules of mobile scaling. We’re a lean,
- performing team that thrives on speed, ownership, and building products people actually care about. If you’re excited by autonomy, global impact, and solving complex problems at scale, welcome aboard. But if you’re looking for structure, predictability, a 9-5 job, or
- holding - this won’t be your vibe.

About Blue
Throne

We’re looking for a Senior Backend Engineer to join our flagship
- driven music platform — a product that changes how millions discover, interpret, and connect through music. The product is already loved by users worldwide and is entering a new stage of rapid growth. This role owns the systems that power that growth; this isn’t a maintenance role and we’re not looking for someone to "keep APIs alive".

What we’re looking for

You’ll be working on one of our flagship products: an
- driven music platform that changes how millions discover, interpret, and connect through music. Already loved by users worldwide, the product is entering a new stage of rapid growth.

As Senior Backend Engineer, you’ll own the systems that power this growth. This isn’t a maintenance role. We’re not looking for someone to “keep APIs alive. ”

We’re looking for someone who:

• takes initiative
• thrives in
  - changing environments
• isn’t afraid to zoom out to design complex systems or zoom in to perfect a single query

You’ll design and scale the backend, make bold architectural calls, and build APIs that frontend engineers love to use. You’ll dive deep into data flows, caching, and performance - always thinking about how backend decisions shape the user experience.

You value clarity over complexity, impact over showmanship, and you care about how your work affects millions of real users.

What you’ll do

• Architect and evolve backend systems that support millions of active users—from designing architecture to ensuring everything runs smoothly at scale.
• Build APIs engineers love—clean, reliable, and intuitive, so the frontend team can move fast without friction.
• Work with complex data flows, caching, and messaging, balancing performance with simplicity.
• Detect and resolve performance bottlenecks before users notice.
• Collaborate closely with product, frontend, and data teams to ship fast and iterate faster.
• Bring fresh ideas, constantly push limits, challenge assumptions, and raise the bar for backend engineering.

What you bring

• 5+ years of experience building backend systems at scale — you’ve seen what works and what breaks when millions of people use a product.
• Strong Node. js + Type
  Script skills — async code feels like second nature to you.
• Experience designing scalable architectures and RESTful APIs that other engineers love to work with.
• Deep knowledge of Postgre
  SQL and Elasticsearch — comfortable with large datasets and optimizing for
  - world use.
• Hands-on knowledge of Redis and Rabbit
  MQ — you know how to make systems both fast and resilient.
• Confidence around infrastructure — you can configure Nginx and aren’t afraid to get into deployment details.
• Extra points if you’ve touched Flutter or Kotlin, but curiosity and adaptability matter more than a checklist.
• Most importantly: you thrive in
  - changing environments where “done” beats “perfect, ” and impact always comes first.

You’ll fit right in if you

• Prefer freedom over fixed schedules - remote, flexible, unlimited time off.
• Are naturally curious and love driving real impact for users and the business.
• Can wear multiple hats - we love experts, but we also value jacks of all trades.
• Keep things cool, calm, and collected - save the drama for your llama.
• Like challenges and aren’t afraid to roll up your sleeves to win.
• Believe in working smarter, not harder - focus on productivity and results, not punching the clock.
• Follow your passion and have fun while doing work that actually matters.

The interview process

Initial call with the People team (30 minutes)

Technical interview with our Tech Lead (90 minutes)

Chat with the CTO and VP of Product (60 minutes)

We move fast and respect your time. Most candidates finish the process in under 4 weeks.

Equal opportunities for everyone We believe the best teams are diverse teams. We welcome applicants from all backgrounds and experiences. We consider all candidates regardless of age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, veteran status, neurodiversity, or disability. If you need reasonable adjustments at any point in the application or interview process, please let us know.

Seniority level

• Not Applicable

Employment type

• Full-time

Job function

• Engineering and Information Technology

Industries

• Technology, Information and Internet

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Throne by 2x

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