Principal Engineer, Word Gameplay Algorithm

Responsibilities

• Design, develop, and implement the core Word Algorithm (WordAlgo) system, initially focusing on rule-based logic and evolving into ML and LLM-driven solutions using unit tests
• Create tools to convert and generate optimized data for use in mobile games.
• Collaborate closely with data engineers and data scientists to integrate data pipelines and leverage player data for difficulty detection and adjustment.
• Work hand-in-hand with game development teams to seamlessly integrate WordAlgo into existing and new mobile games, ensuring a clean and well-documented API for game logic to consume.
• Design and document technical specifications for WordAlgo components, including algorithm logic, data flow, and API contracts.
• Participate actively in an Agile development environment, contributing to iterative design, implementation, and testing cycles.
• Continuously monitor and analyze game performance data to identify opportunities for algorithm optimization and player experience improvement.
• Articulate technical concepts, challenges, and solutions clearly and concisely to both technical and non-technical stakeholders through verbal and written communication.
• Champion PeopleFun's culture of trust, humility, and team-focused results in all aspects of work.

Requirements

• 7+ years of experience in mobile game development, with a strong understanding of game architecture and systems.
• Demonstrated experience successfully launching and operating at least one commercial mobile game title.
• Expert-level proficiency with Unity game engine, including a deep understanding of its architecture, scripting (C#), and best practices.
• Proven ability to design and implement robust, scalable, and well-documented APIs.
• Excellent verbal and written communication skills, with the ability to articulate complex technical ideas and engage in productive discussions.
• Experience writing comprehensive technical design documents.
• Familiarity with Agile development methodologies and a track record of delivering iteratively.

Preferred Qualifications

• Experience with or a strong understanding of Machine Learning concepts and applications.
• Familiarity with Unity Sentis or similar on-device ML inference engines.
• Experience working with large datasets and data-driven systems.
• Knowledge of Natural Language Processing (NLP) or Large Language Models (LLMs).