Senior AI Software Engineer, Coding Agent

Lightspeed Studios; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Lightspeed Studios is looking for a Sr. AI Software Engineer to lead the development of an innovative in-house AI Coding Agent. This role will significantly enhance our game studios' development pipelines by providing intelligent code generation and advanced debugging capabilities.

The successful candidate will have extensive experience in software engineering, especially in Python, TypeScript, C++, and C#. A background in game development with experience in the development of AI systems is preferred. Join us at Lightspeed Studios and help us shape the future of gaming.

Qualifications

• 8+ years of professional software engineering experience.
• Strong background in Python, TypeScript, C++, or C#.
• Proven experience in building complex AI systems.
• Deep experience with LLM APIs and open-source models.

Responsibilities

• Architect and lead the development of a robust, scalable AI Coding Agent.
• Integrate the AI agent into developer IDEs and game engines.
• Collaborate with developers to gather requirements and iterate on features.
• Optimize model inference speed and resource usage.

Skills

Python

TypeScript

C++

C#

Retrieval-Augmented Generation (RAG)

AI Agent architectures

LLM APIs

Education

Bachelor's degree in Computer Science, AI, Machine Learning

Job description

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.

Position Overview

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.

Duties and Responsibilities

• 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.

Who We Look For

• 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.

Requirements

• 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).

Preferred Qualifications

• 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.