Backend Developer Intern

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

As a Backend Developer Intern, you’ll collaborate with our engineering team to help design, build, and scale APIs that power our Smart TV platform. This is a hands-on university internship where you’ll gain real‑world experience in software development, participate in the full product lifecycle, and contribute to projects used by millions of users.

Key responsibilities:

• Feature Development: Design, implement, test, and document new API endpoints and enhancements.
• Code Reviews & Collaboration: Participate in peer reviews; give and receive constructive feedback. Work closely with product owners and teammates to prioritize and scope tasks.
• Follow Agile Processes: Adhere to sprint ceremonies, ticketing workflows, and documentation practices.
• Monitor & Measure: Assist in establishing basic SLAs and KPIs for service performance; learn to track and report on these metrics.

What makes you a great fit:

• Pursuing a Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.
• Strong grasp of data structures, algorithms, and core CS principles (e.g., SOLID).
• Experience (classwork or personal projects) with at least one backend language or framework (e.g., Ruby/Rails, Python/Django, Node.js/Express).
• Familiarity with relational databases (MySQL, PostgreSQL) and basic SQL querying.
• Understanding of RESTful principles and how to consume or implement web services.
• Awareness of unit tests or integration tests; eagerness to learn test‑driven development.
• Ability to articulate ideas clearly and work in a collaborative, fast‑paced environment.

Desirable skills

• Experience or coursework involving Elasticsearch (indexing, optimizing queries).
• Exposure to AWS services (EC2, S3, RDS) and CI/CD tools (e.g., GitHub Actions).
• Basic understanding of key‑value or document stores (Redis, MongoDB).
• Interest in logging, metrics, or tracing tools (e.g., Prometheus, Grafana).
• Familiarity with Go, Ruby, or another modern backend language.

Reasons to apply:

• Compensation in line with the internship programme
• Opportunity to be part of a dynamic and collaborative international environment
• Hands-on experience and exposure to real business projects
• Opportunity to learn and develop your skills alongside an experienced team
• 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.