Senior AI Software Engineer, Coding Agent, London

About the Hiring Team: Tencent Overseas IT is dedicated to empowering Tencent’s rapid global growth with future‑ready, global IT platforms, applications and services. We lead the overseas IT strategy, architecture, roadmap, and execution to satisfy internal and external customers while building a world‑class global IT team.

We are seeking a Sr. AI Software Engineer to architect and lead the development of a groundbreaking in‑house AI Coding Agent. This tool will act as a force multiplier for our game studios’ development pipelines, accelerating our developers by providing intelligent code generation, in‑depth code inspection, and advanced debugging capabilities.

• Architect and lead the development of a robust, scalable AI Coding Agent tailored to our game development workflows (primarily for UE/Unity‑based games in C++, C#, and other relevant languages).
• Integrate the AI agent directly into developer IDEs (like Visual Studio, VS Code) and our game engines (e.g., Unreal Engine, Unity).
• Collaborate closely with game developers, technical artists, and engine programmers to gather requirements, understand pain points, and iterate on the tool's features.
• Optimize model inference speed and resource usage to ensure the agent is fast and responsive without hindering developer workstations.
• Mentor other engineers on the team and establish best practices for AI development, agentic RAG and agent‑based architectures.
• Stay current with the latest research in AI, code generation, and LLMs to continuously improve the agent's capabilities.

• Customer‑oriented and able to thrive in a fast‑paced environment.
• Positive, self‑motivated, and passionate.
• Independent, insistent, and open‑minded.
• Great team player, dependable and autonomous.
• Data‑driven decision maker.

• 8+ years of professional software engineering experience, with a strong background in Python, TypeScript, C++, or C#.
• Proven experience building complex AI systems, with hands‑on expertise in Retrieval‑Augmented Generation (RAG) and AI Agent architectures.
• Deep, hands‑on experience with LLM APIs and/or fine‑tuning and serving open‑source models.
• Strong understanding of prompt engineering and context engineering to maximize model relevance and accuracy.
• Excellent problem‑solving skills and the ability to work on complex, ambiguous projects, delivering results in a fast‑paced environment.
• Experience with observability, performance optimization, and production incident response.
• Bachelor's degree in Computer Science, AI, Machine Learning, or a related technical field (or equivalent practical experience).

• Direct experience building a Coding Agent or similar developer‑facing AI tool (IDE plugins, CLI, etc.).
• Experience in the game development industry or with game engines (Unreal, Unity).

Equal Employment Opportunity: At Tencent, we firmly believe that diverse voices fuel our innovation and allow us to better serve our users and community. We foster an environment where every employee feels supported and inspired to achieve individual and common goals.

Tencent is a world‑leading internet and technology company that develops innovative products and services to improve the quality of life for people around the world.