Senior Client Foundations Engineer – Unity

Senior Software Engineer II, Client Foundations

Requisition : R027522

Location:

Irvine, CA (hybrid work). The role is anticipated to be a hybrid work position with some on‑site and some work from home.

At Blizzard, we craft genre‑defining games and legendary worlds. We are looking for a Senior Software Engineer in Client Foundations to help build core client systems and tooling for a new, unannounced game. The team values creativity, collaboration, and quality.

• Design and implement core client systems that support performance, scalability, and maintainability.
• Develop and improve client‑side tools and workflows that accelerate iteration for designers, artists, and engineers.
• Collaborate closely with cross‑disciplinary teams to deliver polished gameplay systems and player‑facing experiences.
• Optimize performance across CPU, memory, and rendering to ensure a high‑quality multiplatform experience.
• Support rapid iteration by balancing prototyping speed with strong engineering fundamentals.
• Diagnose, debug, and resolve issues in client systems and workflows.
• Contribute to code reviews and technical discussions that improve code quality and team standards.

• 8+ years of professional software engineering experience, or an equivalent combination of education and experience.
• Experience building and shipping client systems for games or similarly complex interactive applications.
• Experience contributing to at least one shipped title.
• Experience collaborating across disciplines including engineering, art, and design.

• Strong proficiency in C# and Unity, developing scalable and maintainable client systems.
• Solid understanding of software architecture and object‑oriented programming principles.
• Experience with debugging, profiling, and optimizing performance in real‑time applications.
• Familiarity with multiplatform development considerations.
• Proven ability to work collaboratively within teams and foster productive partnerships across all departments.
• Demonstrated ability to inspire colleagues through an enthusiastic approach to game development and a commitment to continuous improvement of core skills.
• Ability to take initiative and manage responsibilities independently, demonstrating strong ownership and accountability.
• Experienced and knowledgeable player of a wide range of games; able to use this expertise to enhance creative decisions in game development.

• Experience building tools and workflows that improve development efficiency.
• Familiarity with telemetry or data‑informed approaches to improving player experience.
• Experience across full development cycles, from prototyping through live operations.
• Experience working in large, shared codebases with distributed teams.
• Passion for game development and delivering high‑quality player experiences.

• Medical, dental, vision, health savings account or health reimbursement account, healthcare spending accounts, dependent care spending accounts, life and AD&D insurance, disability insurance.
• 401(k) with company match, tuition reimbursement, charitable donation matching.
• Paid holidays and vacation, paid sick time, floating holidays, compassion and bereavement leaves, parental leave.
• Mental health & wellbeing programs, fitness programs, free and discounted games, and a variety of other voluntary benefit programs like supplemental life & disability, legal service, , rental insurance, and others.
• Relocation assistance may be available if required.
• Eligibility to participate in these benefits may vary for part‑time and temporary full‑time employees and interns. For more information, visit

Base salary range in the U.S.: $ – $ per year. Compensation may vary based on experience, performance, and location. Incentive compensation is not guaranteed.