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Open nowPosted 11 hours ago

Full Stack Developer

Titan OS

Where
Barcelona, Catalonia, Spain
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Your applicationOpen nowFull Stack DeveloperTitan OS · Barcelona, Catalonia, Spain

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Titan OS's own form.

The reply lands in your private mailbox

3×more interviews than doing it yourself with ChatGPT.

The clock on this job

Early applications get read.

13.7% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
  1. 2.2%1 day
  2. 4.7%3 days
  3. 13.7%7 days
  4. 22.1%14 days
  5. 37.8%30 days
  6. 59.1%60 days
This job: posted 11 hours ago

The posting

Is this you?

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

Our platform combines content discovery and advertising technology in one solution, helping leading TV brands unlock greater value. Titan OS powers devices from major brands including Philips, AOC and JVC, reaching millions of viewers across Europe and LATAM. Titan OS is also powering free premium FAST Channels on selected SONY Android TVs.

Over the last two years, Titan OS has grown revenue 10x and attracted leading investors, including Highland Europe and Mangrove.

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:

As a Full-Stack Developer, you will help maintain and grow our advertising platform, which is developed and hosted on Replit. You'll work across the whole stack, from the React front end to the Node.js API and PostgreSQL database. You'll help keep a live production system secure and reliable while delivering new features and integrations.

Key Responsibilities

  • Design, code, test, maintain and deliver features across the React front end and the Node.js/Express API
  • Build and maintain integrations with third-party APIs and services
  • Investigate and fix production bugs, find the root cause and prevent regressions
  • Maintain authentication and access control built on Supabase
  • Write and run database schema changes and migrations with Drizzle ORM, safely and without data loss
  • Write and maintain automated tests with Vitest, Playwright and Node.js tests
  • Keep the platform secure: dependency updates, secrets management, input validation and access control
  • Manage deployments, environments and releases on Replit
  • Document code and technical decisions so the platform stays easy to maintain

Requirements

  • 2+ years of relevant experience as a full-stack developer with TypeScript, React and Node.js
  • Experience working on production applications, ideally including authentication, database migrations or third-party integrations
  • Experience with Replit, including hosting, deployments, environments and secrets management
  • Working knowledge of PostgreSQL and SQL, and familiarity with Drizzle ORM or a similar TypeScript ORM
  • Understanding of authentication (sessions, JWTs, OAuth, role-based access), ideally with Supabase Auth
  • Good knowledge of HTML5, CSS and Tailwind CSS
  • Experience writing automated tests, ideally with Vitest and Playwright
  • Awareness of web application security basics (OWASP Top 10, secrets handling, dependency updates)
  • Experience integration AI services or LLM APIs into production applications
  • Nice to have: Experience with advertising technology or integrating ad platforms (VAST)

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!

From $25, paid onceGet the CV for this job

What happens when you press

One press. We do the rest.

  1. A CV for this posting

    Written against Titan OS's own wording, from every piece of relevant proof in your profile.

  2. 25 readers review it

    Recruiter, hiring manager, skeptic and more read every draft, round after round. You get the best round.

    The review screen in CV Rocket: how each CV was read, round by round.

  3. We apply on Titan OS's form

    Our application engine gets through the hardest forms there are. Where a question needs you, AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

    An application in CV Rocket: every answer filled in on the employer's form.

  4. Every reply, sorted

    Titan OS's answer lands in your private mailbox, and we classify it on arrival: interview, question, rejection.

    The CV Rocket inbox: each employer reply classified as an interview, an action or a rejection.

  5. Reply with AI

    AI helps you write the email, checks it and sends it. We show you whether the recruiter read it.

  6. The interview in your calendar

    Full integration with your calendar. The invitation goes straight in.

    An interview invitation in the CV Rocket inbox, added to the candidate's calendar.
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