Principal LLM Engineer - Helsinki

Job summary

Supercell is looking for an entrepreneur disguised as an engineer — someone who's obsessed with building real things, thrives on autonomy, and is energized by big, undefined problems.

We want a person who treats AI as a playground for creation — who can imagine bold applications, prototype fast, and ship production-grade systems that change how we work and play.

Someone who wants to set the standard for what great looks like in LLM engineering — and who's excited by the idea of doing it inside one of the most creatively free companies in the world.

Responsibilities

• Design, prototype, and deliver production-grade LLM and agentic systems — from creative tools to intelligent in-game and internal agents.
• Define how we design, evaluate, and scale LLM applications across Supercell. Set the bar for quality, reliability, and creativity.
• Try new frameworks, break things safely, and push the limits of what's possible with emerging models and tools.
• Collaborate like a founder: Work closely with game teams, engineers, and artists to find high-impact opportunities — and make them real.
• Inspire and enable: Help others across Supercell build confidently with AI, sharing insights, frameworks, and reusable components.

Qualifications

• Proven track record building production LLM or agentic applications — ideally shipped or widely used.
• Deep technical grounding in Python, APIs, orchestration, evaluation, monitoring, and modern LLM frameworks (LangChain, LlamaIndex, OpenAI, Anthropic, vLLM, etc.).
• Entrepreneurial mindset: You've built from scratch, taken bets, and thrived in environments with freedom and ambiguity.
• Strong product sense and creativity — able to turn vague ideas into concrete, delightful experiences.
• Excellent communicator and evangelist — you bring others along and create excitement.
• Curiosity and appetite for risk and experimentation. You move fast and learn faster.

Työn kuvaus