Junior AI Engineer

Job Description:

About Us

Rakuten TV is a leading streaming platform available in 42 countries across Europe, offering transactional, advertising-based, and free ad-supported streaming content. We are part of Rakuten Group, one of the world's leading internet services companies.

We are looking for a Junior AI Engineer to join our AI team and work directly with our AI Lead. You will contribute to the design, development, and deployment of AI-powered solutions across content discovery, personalization, and operational workflows.

This role is AI-first: you're expected to use AI tools in your daily work to speed up delivery while maintaining engineering rigor, traceability, and quality.

Responsibilities

• Partner with the AI Lead to identify high-impact technical problems, translate them into concrete AI solutions and deliver them.

• AI Engineering: Build end-to-end AI workflows: data → model/agent logic → evaluation → deployable prototype.

• Apply engineering best practices with rigor: reason about model behavior/limitations, design evaluation pipelines (golden datasets, regression tests, human-in-the-loop review).

• Integrate prototypes into real systems via APIs and services, ensuring observability (latency, cost, quality).

• Communication: Produce clear demos and documentation; communicate results, tradeoffs, and risks to both technical and non-technical stakeholders .

Requirements

• 1–3 years of experience building products end-to-end, from architecting solutions to deploying production-grade software; internships directly related to the role are also considered valuable.

• Hands-on experience with LLMs or AI agents.

• Proficiency in at least one programming language (Python is a plus), knowledge of Git and collaborative development practices, and familiarity with Docker and/or container technologies.

• Experience with cloud-based AI platforms (AWS, GCP, Azure) and AI services from providers (OpenAI, Anthropic, and similar).

• Familiarity with MLOps practices: model versioning, experiment tracking, monitoring, and API development with FastAPI or equivalent frameworks.

• Strong understanding of AI fundamentals: why models fail, hallucinations, grounding strategies, and evaluation-driven development.

Please include your GitHub or portfolio in your application to show us the projects you have worked on :)

Nice-to-Have requirements:

• Participation in hackathons or programming competitions; experience building your own products, AI agents, or automations.

• Experience in a streaming, media technology context.

Salary range for this role: 35.000 - 45.000 EUR gross/year.

Why you should apply

• Work on real, open-ended problems where you define the approach, not just execute, and see your solutions go live.

• Work closely with the AI Lead and a strong technical team, with direct visibility and impact on AI decisions.

• Get broad exposure across multiple technical domains: from internal operations to media products in a leading global tech company.

• Flexible work: hybrid model, flexible hours, and Friday afternoon off

• Fast-track your career in a high-growth environment

• Training resources and free language classes

• Great work atmosphere, team activities, and offsites

• Modern, sustainable offices near Barcelona beach, with a focus on wellbeing

• Access to wellbeing and mental health platforms

• Free coffee, juice, and lunch allowance in the office

• Diverse team of 24+ nationalities

• Flexible remuneration: medical insurance or extra funds for meals, commuting, or childcare

• Access to Wellhub.

Rakuten Shugi Principles

Rakuten Group has an unswerving commitment to building an egalitarian society by empowering individuals and companies to be successful in business and in life. We expect "Rakutenians" to model these 5 Shugi Principles of Success:

Always improve, always advance. With enough determination and effort, you can achieve anything.

Be passionately professional. Be determined to be the best.

Hypothesize – Practice – Validate – Shikumika. Success in business depends on making and executing concrete, specific action plans.

Maximize Customer Satisfaction. The greatest satisfaction in a service industry is to see our customers smile.

Speed!! Speed!! Speed!! Always be conscious of time. Take charge, set clear goals, and engage yourself and your team.

Our D&I Mission

Rakuten's corporate mission is to "contribute to society by creating value through innovation and entrepreneurship." We foster a culture that provides equal opportunities to those who share this founding philosophy and take on the challenge to transform society, regardless of gender, age, sexual orientation, race, religion, culture, nationality, disability, or any other status. Diversity is one of Rakuten's core strategies and a driving force for innovation. To continue to provide innovative services, we strive to respect the uniqueness and values of every one of our Rakutenians, located all around the world, and to create environments where they are able to demonstrate their full potential.

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