Software Engineer, AI Application

First Fun; Santa Clara (CA); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

401(k) plan with employer match

Life and disability insurance

Generous paid time off

Free daily lunch and fully stocked kitchen

Job summary

First Fun in Santa Clara is looking for a Software Engineer specializing in AI applications. This role involves designing systems that integrate AI into Unity-based game development. You'll work with cross-functional teams to automate various workflows and enhance production efficiency.

The ideal candidate holds a Master’s or PhD in Computer Science or a related field and has strong programming skills in TypeScript, C#, and Python. The position offers comprehensive employee benefits including health insurance and a 401(k) plan.

Qualifications

• Proven software engineering experience, preferably in gaming or AI-driven systems.
• Experience integrating ML/AI models into production applications.
• Familiarity with scalable system design.

Responsibilities

• Design and implement AI-driven tools for Unity game development.
• Build AI systems for content generation and QA automation.
• Collaborate with teams to define AI use cases.

Skills

Programming skills in TypeScript

Programming skills in C#

Programming skills in Python

Model fine-tuning

Evaluation pipelines

Education

Master’s degree or PhD in Computer Science/AI/Software Engineering

Tools

Unity development

LLM APIs

RESTful APIs

Job description

We are a next-generation mobile game company redefining how games are built. By leveraging AI across the full development lifecycle—from ideation and asset creation to gameplay tuning and live operations,we automate and accelerate Unity-based game production at scale. If you are excited about applying cutting-edge AI to real production systems and seeing your work directly power shipped games played by millions, we’d love to talk.

Role Overview

As a Software Engineer, AI Application, you will design, build, and deploy AI-powered systems that integrate directly into our Unity-based game development pipeline. You will bridge AI research and production engineering—turning models into reliable, scalable, real-time applications that automate brainstorming, content generation, game logic, balancing, testing, publishing, marketing and live operations workflows. This role requires strong engineering fundamentals, hands‑on AI implementation experience, and the ability to translate product needs into intelligent systems.

Key Responsibilities

AI System Development

• Design and implement AI-driven tools and services that automate Unity game development workflows
• Integrate LLMs, generative AI models, and ML systems into production pipelines
• Build real-time inference systems and backend services to support AI native game development

Unity & Pipeline Integration

• Develop SDKs, APIs, and internal tools that connect AI services with Unity projects
• Optimize AI integration for performance, scalability, and cost efficiency
• Collaborate with game engineers to productionize AI native content generation

Automation & Optimization

• Build AI systems for procedural content generation, asset creation, balancing, and QA automation
• Implement evaluation frameworks to measure AI output quality and impact
• Continuously improve model performance through prompt engineering, fine‑tuning, and feedback loops

Cross-Functional Collaboration

• Partner with game designers, data scientists, and product managers to define AI use cases
• Contribute to AI architecture strategy and best practices

Requirements

• Master’s degree or PhD in Computer Science, AI, Software Engineering, or related field
• Proven software engineering experience, preferably in gaming or AI‑driven systems.
• Strong programming skills in TypeScript, C# and Python
• Knowledge of model fine‑tuning, prompt engineering, and evaluation pipelines
• Experience integrating ML/AI models into production applications
• Experience with vector databases, embeddings, and retrieval systems
• Familiarity with RESTful APIs, scalable system design

Preferred Qualifications

• Experience with Unity development (C# scripting, editor tooling, runtime systems)
• Hands‑on experience with LLM APIs, generative AI, or multimodal models
• Understanding of game development lifecycle and live ops
• Familiarity with RESTful APIs and cloud services (AWS/GCP/Azure)

What Makes You a Great Fit

• You think like a product engineer, not just a model builder
• You enjoy shipping real‑world systems, not just prototypes
• You’re pragmatic about AI—focused on reliability, cost, and measurable impact
• You thrive in fast‑paced, experimental environments
• You are passionate about transforming how games are made

Employee Benefits

• Health, dental, and vision insurance
• 401(k) plan with employer match
• Life and disability insurance
• Generous paid time off, including vacation, sick leave, and company holidays
• Free daily lunch and fully stocked kitchen