Senior Full Stack Developer

Sorry, this job was removed at 06:36 p.m. (CST) on Thursday, Dec 18, 2025
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Barcelona, Cataluña, ESP
In-Office
Digital Media • Information Technology • Software
The Role

Is this you?

Titan Operating System S.L. (Titan OS), the Barcelona-based technology, entertainment, and advertising company is looking for you! 

At TitanOS, we live by three core values:

  • Make things happen – We take ownership, move fast, and deliver impact.
  • No ego – We collaborate with respect and humility to reach shared goals.
  • Show genuine passion – We love what we do and never stop learning.

Culture and environment are at the heart of our ethos. If the above resonates with you, keep reading because we believe you could be a perfect addition to our incredible team!

Role overview: 

Join our team as a Senior Full Stack Engineer and help build the platforms and tools that enable partners to seamlessly onboard their apps and channels to Titan OS.

You’ll develop full-stack solutions powering our Partner Solutions ecosystem, including web tools, APIs, and services that simplify and automate content and app onboarding.

This is a high-impact role for an engineer passionate about developer tooling, platform enablement, and technical ownership, with the opportunity to shape systems that support our global partner network.

Key responsibilities:

  • Full-Stack Development: Design, build, and maintain scalable, secure, and high-quality web applications using Next.js, TypeScript, and Node.js.
  • API Integration & Development: Lead the integration of our platform with a wide range of third-party and internal APIs to expand functionality. You will also contribute to the development and maintenance of our existing backend services.
  • Architectural Ownership: Evolve our existing full-stack architecture, making key technical decisions to ensure our platforms are scalable and maintainable for the future.
  • Problem Solving & Ambiguity: Tackle complex challenges, working collaboratively with product and design to clarify uncertain requirements and deliver effective technical solutions.
  • CI/CD and DevOps: Own and enhance the complete CI/CD process using GitHub Actions. This includes managing automated pipelines for testing, versioning, building, and publishing Docker images, and handling deployments.
  • Backend & Database Management: Develop robust backend services and manage the database lifecycle, including schema design and migrations using Prisma.
  • Championing Best Practices: Establish and enforce a strong testing culture using frameworks like Vitest and React Testing Library to ensure application reliability and quality.
  • Technical Leadership & Mentorship: Provide technical guidance to other developers, lead architectural discussions, and maintain high standards for code quality through code reviews.

Our Tech Stack:

  • Framework: Next.js, React.js, Node.js
  • Language: TypeScript
  • Styling: Tailwind CSS, Radix UI
  • Database: PostgreSQL with Prisma (ORM)
  • CI/CD: GitHub Actions, Docker
  • Infrastructure: Nginx, Redis
  • Testing: Vitest, React Testing Library

Requirements
  • 5+ years of experience building full-stack web applications with Node.js and TypeScript.
  • Deep expertise in React.js and extensive hands-on experience with Next.js in a production environment.
  • Proven experience building and consuming APIs.
  • Solid experience with relational databases (like PostgreSQL) and ORMs (specifically Prisma).
  • Hands-on experience managing CI/CD pipelines (GitHub Actions preferred) and working with Docker.
  • Strong understanding of computer science fundamentals, software architecture, and best practices.
  • A passion for writing clean, high-quality, and maintainable code.
  • Strong experience with modern testing frameworks like Vitest and React Testing Library (RTL).

Nice to have:

  • Experience developing or maintaining SDKs, npm libraries.
  • Experience with state management libraries like Zustand.
  • Familiarity with component libraries such as Radix UI.
  • Previous experience in a tech lead or mentorship capacity.

Hiring process:

  • Meet our Talent Acquisition team
  • Conversation with the VP of Engineering
  • Technical assessment
  • Pair Programming review with team members

Benefits

Reasons to apply:

  • Centrally located office in the heart of Barcelona, with public transportation nearby
  • Competitive compensation
  • Private health insurance
  • Friendly, diverse, and international work environment
  • Opportunity to work outside of your comfort zone and develop professionally in an exciting and fast-growing CTV industry.
  • Change the future of TV! A unique opportunity to join a well-funded, high-growth company in the early stages to help shape a product/business that will impact millions.

If you're excited about this position, don’t hesitate to apply. We’re waiting for you to join us! And if you want to know more about us, follow us on LinkedIn!

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The Company
HQ: Barcelona, Catalonia
150 Employees

What We Do

Titan OS S.L. is a technology company headquartered in Barcelona, with branches in Amsterdam and Taipei. The company specialises in developing software and solutions to unleash the full potential of Connected TV. We are re-thinking TV to change the way people discover content and how brands connect with audiences, making content discovery easier. Our aim is to foster collaborations across the entire TV ecosystem to grow business together with TV manufacturers, retailers, media companies, content creators, publishers, and brands. Our independent operating system powers smart TV devices from world-class manufacturers across Europe and Latin America, offering millions of viewers a personalised experience from the moment they switch on their TV. With tailored recommendations, we seamlessly integrate all the content on the homepage, from streaming subscription services, free and paid movies, series and TV shows to linear channels.

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