Senior Software Engineer II, Client Foundations

Team Name: Job Title: Senior Software Engineer II, Client Foundations Requisition ID: R027522 Job Description: Your Mission At Blizzard, we craft genre‑defining games and legendary worlds for all to share.

Through unparalleled creativity and storytelling, we create immersive universes and iconic characters that are beloved across platforms, borders, backgrounds, and generations—only made possible by building a work environment that cultivates the artistry of game development and unleashes the aspirations of our people.

We are looking for a Senior Software Engineer, Client Foundations to help craft a new, unannounced game for Blizzard. Our team values creativity, collaboration, and a dedication to quality, and we are searching for contributors aligned to our core Blizzard values to add to our team of dedicated game makers.

As a key member of the development team, you will be responsible for building and evolving core client systems and tooling that enable scalable, performant, and responsive gameplay experiences.

You are comfortable operating in a dynamic environment, navigating fluid deadlines and changing priorities with purpose. This role is anticipated to be a hybrid work position, with some work on-site and some work from home.

The potential home studio for this role is Irvine, CA.

Responsibilities 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.

Minimum Requirements Experience 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. Knowledge & Skills 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.

Extra Points 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. Your Platform At Blizzard Entertainment, we pour our hearts and souls into everything we create.

Best known for iconic video game universes including Warcraft®, Overwatch®, Diablo®, and StarCraft®, we’ve been creating genre-defining games for millions of players around the world for more than 30 years.

If that sounds like you, join us. Our World Best known for iconic video game universes including Warcraft®, Overwatch®, Diablo®, and StarCraft®, Blizzard Entertainment, Inc., a division of Activision Blizzard, which was acquired by Microsoft (NASDAQ: MSFT), is a premier developer and publisher of entertainment experiences.

We provide a suite of benefits that promote physical, emotional and financial well-being for every world. The video game industry is fast-paced and will continue to evolve.

As such, the duties and responsibilities of this role may be changed as directed by the Company at any time to support business needs. Rewards We provide a suite of benefits that promote physical, emotional and financial well-being for ‘Every World’ - we’ve got our employees covered!

In the U.S., the standard base pay range for this role is $121,500.00 - $224,880.00 Annual. These values reflect the expected base pay range of new hires across all U.S. locations.