Senior frontend engineer (react)

Titan Operating System S.L. (Titan OS) is a Barcelona-based technology, entertainment, and advertising company that combines content discovery and advertising technology into one solution, helping leading TV brands unlock greater value. Titan OS powers devices from major brands such as Philips, AOC, and JVC, reaching millions of viewers across Europe and LATAM, and also powers free premium FAST Channels on selected SONY Android TVs. Over the last two years, Titan OS has grown revenue 10x and attracted investors including Highland Europe and Mangrove.
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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.
Role Overview
As a Frontend Engineer, you will play a pivotal role in our frontend engineering team. You will collaborate with other engineers to shape the architectural framework of our applications, code intricate frontend components, and orchestrate the deployment of the final product that is seen in millions of homes worldwide.
Key Responsibilities
Improve architecture and coding standards in the frontend.
Ensure projects are delivered on time and developers are working effectively.
Participate in setting the long-term direction, roadmaps, and standards for the web app.
Design, code, test, maintain, and deliver features of the web app.
Follow software development processes and documentation practices.
Conduct code reviews of work done by other engineers in the team.
Work with backend engineers, product managers, and UX designers to deliver new features.
Establish and track SLAs (internal and external), KPIs, and team objectives.
Requirements
7+ years of relevant experience as a JavaScript developer with React.
Expertise in HTML5 and CSS.
Experience with Cypress.
Experience consuming RESTful APIs.
Knowledge of computer science fundamentals and a strong understanding of SOLID principles and software architecture best practices.
Love for writing clean, modular code in a fast‑paced, agile development model.
Nice to Have
Experience developing web apps for Smart TVs.
Experience with the HTML5 video player and other players (HLS.Js, Shaka Player).
Experience integrating Ads platforms (VAST).
Hiring Process
Meet our TA team – a 30‑minute call.
Technical conversation with the Tech Lead.
Technical assessment.
Pair programming with team members.
Brief call with the CTO.
Benefits
Hybrid position.
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, 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. xhfqzwm We’re waiting for you to join us! For more information about us, follow us on LinkedIn.
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