Software Engineer User Co Experience jobs in San Mateo – Browse 469 openings on RoboApply Jobs

Software Engineer User Co Experience jobs in San Mateo

Open roles matching “Software Engineer User Co Experience” with location signals for San Mateo. 469 active listings on RoboApply Jobs.

469 jobs found

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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Join the innovative team at Roblox as a Software Engineer focused on enhancing user co-experience. In this dynamic role, you will collaborate with cross-functional teams to develop cutting-edge features that enhance user interaction and engagement. With a commitment to creating immersive online experiences, Roblox is seeking passionate engineers who thrive i…

Mar 13, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Join Roblox as a Software Engineer specializing in User Sharing, where you'll play a key role in enhancing our platform's collaborative features. You'll work closely with cross-functional teams to design, develop, and implement user-centric solutions that empower our community. This is a unique opportunity to impact millions of users globally.

Mar 31, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Join Roblox as a Senior Software Engineer, focusing on User Safety, where you will play a vital role in ensuring a safe and secure environment for millions of users worldwide. You will collaborate with cross-functional teams to design, develop, and implement innovative safety features, leveraging your expertise in software engineering to enhance user experience while safeguarding our community.

Mar 12, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Join Roblox as a Senior Software Engineer in Co-Experience, where you'll play a pivotal role in enhancing user engagement and experience across our platform. Collaborate with a talented team of engineers and contribute to the development of innovative features that make Roblox a beloved destination for millions of users worldwide.

Mar 25, 2026
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31st Union logo
Full-time|$100.2K/yr - $148.3K/yr|On-site|San Mateo, California, United States

WE ARE GAME MAKERS About Us: At 31stunion, we are a vibrant team of developers who share a deep passion for crafting exceptional games that captivate players worldwide. Our commitment to inclusivity and diversity fuels our creativity, ensuring that every voice enhances our collective vision. We prioritize growth and innovation in a safe, trusting environment, and we are eager to welcome a new team member who will challenge us to elevate our standards. Your Role: We are seeking an experienced Senior UX Designer, proficient in design principles and technical execution, with a strong player-centered philosophy. You will create intuitive, high-caliber user experiences for interactive entertainment, confidently tackling intricate UX challenges from initial concept to in-engine execution. Key Responsibilities: Collaborate with Leads and Directors to swiftly design complex wireframes for various features. Possess a deep understanding of diegetic UI and 3D layouts in user experiences. Refine user flows and interaction designs to enhance the overall user experience. Guide UX design initiatives through leadership approvals, iterations, and cross-departmental implementations with support from Production & Leadership. Apply graphic design principles to create visually intuitive UIs, ensuring good hierarchy and contrast. Enhance usability quality in builds, making modifications to Blueprints and Game Data to test designs as necessary. Regularly identify, implement, and document best practices and workflows to boost team effectiveness. Continuously learn and explore new tools to enhance UI deliverables and workflow within the UI team. Develop documentation to communicate UX vision, including competitive analyses, personas, storyboards, user journeys, wireframes, flow diagrams, and interactive prototypes. Seek personal growth and be open to mentoring others.

Feb 12, 2026
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2K logo
Full-time|$100.2K/yr - $148.3K/yr|On-site|San Mateo, California, United States

JOIN THE CREATIVE TEAM AT 2KAbout Us:We are a dynamic and diverse group of developers fueled by our passion for artistry. Our core values of inclusivity and collaboration inspire us to create extraordinary games that captivate players globally. We foster an environment that emphasizes safety, trust, and continuous growth. Our belief is that a variety of perspectives strengthens both our team and the games we develop. We are seeking a talented individual to elevate our standards and enhance our creative output.Your Role:We are in search of a Senior UX Designer who possesses excellent design judgment, technical expertise, and a player-centric approach. You will craft intuitive and high-quality user experiences for interactive entertainment, confidently managing complex UX challenges from initial concepts to in-engine execution.Key Responsibilities:Collaborate with Leads and Directors to swiftly create intricate wireframes for new features.Exhibit a profound understanding of diegetic UI and 3D arrangements in user experiences.Enhance user flows and interaction designs to elevate the overall user experience.Guide UX design initiatives through leadership approvals, iterative processes, and cross-functional collaboration, with occasional support from Production & Leadership.Apply graphic design principles to develop visually intuitive UIs (effective hierarchy, contrast).Refine usability standards within builds, modifying Blueprints and Game Data for testing as necessary.Regularly identify, implement, and document best practices and workflows to boost team efficiency.Proactively explore and learn about new tools to enhance UI quality and streamline workflows within the UI team.Create documentation to convey the UX vision, including competitive analyses, persona designs, storyboards, user journeys, wireframes, flow diagrams, and interactive prototypes.Continuously seek personal growth opportunities and be open to mentoring others.

Feb 12, 2026
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Roblox logo
Full-time|$293.8K/yr - $343.3K/yr|On-site|San Mateo, CA, United States

At Roblox, we bring together millions of users daily to explore, create, play, learn, and connect with friends in immersive 3D digital experiences crafted by our vibrant global community of developers and creators.We are dedicated to building innovative tools and platforms that empower our community to manifest their wildest imaginations. Our vision redefines how people connect from anywhere in the world, on any device. Join us on a mission to connect a billion individuals with positivity and courtesy, as we seek exceptional talent to help us achieve this goal.A career at Roblox means shaping the future of human interaction, tackling unique technical challenges on a massive scale, and contributing to the creation of safer, more civil shared experiences for all users.As our daily active user base expands at an unprecedented rate, we are pioneering the next generation of advertising in an immersive metaverse. Our team lies at the heart of the Roblox Ads ecosystem, delivering billions of impressions while providing the essential infrastructure that connects global brands with our extensive community of creators.We are on the lookout for a Principal Software Engineer to spearhead the technical strategy and execution for the Ads Experience team. This team manages the entire monetization experience, including Advertiser Experience (Roblox Ads Manager), Brand Experience (Brand Ads & Integrations), and Publisher Experience (Creator Monetization & Commerce).This position presents a foundational technical challenge that transcends conventional ad-tech. You will design the scalable backbone of our monetization system, championing the technical vision for our Ads Manager, immersive Brand Ads formats, and creator solutions, while integrating AI and balancing a three-sided marketplace economy in real time.

Feb 10, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Join Roblox as a Senior Software Engineer focused on enhancing our Ads Experience through innovative C++ development. In this pivotal role, you will collaborate with cross-functional teams to design, implement, and maintain high-performance advertising systems that drive user engagement and revenue.As a member of our dynamic engineering team, you will leverage your expertise in software development to create solutions that are not only efficient but also scalable. Your contributions will directly impact the user experience on our platform as you work on cutting-edge technologies in a fast-paced environment.

Mar 3, 2026
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Roblox Corporation logo
Full-time|$242.1K/yr - $293.8K/yr|On-site|San Mateo, CA, United States

Roblox connects millions of people daily through 3D digital spaces, supporting a global community of creators and developers. The company’s platforms and tools help users bring ideas to life and interact across devices, with a mission to foster positive and respectful online experiences for a billion people. Role overview The Senior Full Stack Software Engineer - Ads Experience will design and develop new advertising experiences on Roblox. This position centers on building tools for advertisers to manage campaigns and for publishers to generate revenue through immersive ads. Reporting to the Engineering Manager, this engineer will join a team dedicated to advancing immersive advertising on the platform. What you will do Design and implement systems supporting high-traffic areas of Roblox Ads products Build React components that operate smoothly across a range of devices Contribute to both advertiser and publisher experiences, including campaign management and revenue features Work with engineers and other stakeholders to shape immersive advertising on Roblox Requirements Strong expertise in frontend technologies Interest in improving client-server interactions Ability to collaborate effectively within a team Location San Mateo, CA, United States

Apr 22, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Join Roblox as a Principal Frontend Engineer, specializing in Co-Experience, where you will be at the forefront of creating immersive and engaging user experiences. In this pivotal role, you will lead the development of innovative frontend solutions that enhance collaboration and interaction within our platform. Collaborating closely with cross-functional teams, you will drive projects from conception through execution while mentoring junior engineers and shaping the future of our technology stack.

Mar 27, 2026
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Sony Interactive Entertainment logo
Full-time|$201.4K/yr - $302K/yr|On-site|United States, San Mateo, CA

Why Choose PlayStation?At PlayStation, we pride ourselves on being not just the premier gaming platform but also an outstanding workplace. We are globally recognized as leaders in entertainment, offering an array of products and services, including the PlayStation®5, PlayStation®4, PlayStation®VR, PlayStation®Plus, and a wide range of acclaimed software titles from PlayStation Studios.Our commitment to fostering an inclusive environment that empowers employees and celebrates diversity is paramount. If you share our passion for innovation, technology, and gaming, we invite you to explore our open positions and join our dynamic global team.The PlayStation brand operates under Sony Interactive Entertainment, a wholly-owned subsidiary of Sony Group Corporation.About the RoleWe are on the lookout for a dynamic Engineering Manager to lead a pivotal team within the PlayStation Client Developer Experience (DevEx) group.This role is crucial in shaping how developers build, test, and deploy software across our client and system software teams. You will spearhead the development of cutting-edge developer platforms and tools, including documentation systems, intelligent search capabilities, performance tooling, and AI-driven experiences.We seek a balanced leader capable of nurturing and managing a high-performing team while also possessing strong technical expertise to guide architecture, review designs, and support engineers at the code level when necessary.You will work across frontend-heavy developer experiences (JS, React, React Native) as well as backend/platform systems, crafting solutions that are both technically robust and highly user-friendly for developers.

Mar 24, 2026
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Roblox logo
Full-time|$243.3K/yr - $295.3K/yr|On-site|San Mateo, CA, United States

Roblox is a dynamic platform where millions of users come together daily to explore, create, play, learn, and connect in immersive 3D digital experiences, all crafted by our diverse community of developers and creators.We are dedicated to providing the tools and platform that empower our community to turn their imaginative ideas into reality. Our vision is to redefine the way individuals connect from anywhere in the world on any device. Together, we aim to unite a billion people with optimism and civility, and we are searching for exceptional talent to contribute to this mission.Joining Roblox means you will play a pivotal role in shaping the future of human interaction, tackling unique technical challenges at scale, and helping to foster safer, more civil shared experiences for everyone.The Avatar Team is integral to the Roblox experience, developing and enhancing the systems that dictate how players present themselves in the metaverse—from avatar appearance and movement to expression and interaction within the environment. Our work intersects engine technology, animation, safety, and creator tools, and must scale to support hundreds of millions of players across countless experiences.As a Senior Software Engineer on the Avatar Default Abilities team, you will take ownership of the technical design and implementation of an expanding library of high-quality default abilities for the platform avatar and ability manager. You will drive abilities from concept to production, establish patterns and abstractions for other teams to utilize, and ensure our default abilities deliver exceptional performance and reliability across a diverse range of Roblox experiences and devices.

Feb 20, 2026
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Roblox logo
Full-time|$195.8K/yr - $242.1K/yr|On-site|San Mateo, CA, United States

Join Roblox, where millions of users engage daily in creating, exploring, and connecting within immersive 3D digital experiences crafted by our vibrant community of developers and creators.At Roblox, we are committed to building tools and a platform that empower our users to bring their wildest imaginations to life. Our vision is to transform the way people connect globally, from any device. We are on a quest to unite a billion individuals with positivity and respect, and we are searching for exceptional talent to join us on this journey.A career with Roblox means you will have the opportunity to influence the future of human interaction, tackle unique technical challenges at scale, and contribute to creating safe and respectful shared experiences for all.Why Safety?At Roblox, we aim to foster a billion connections rooted in optimism and civility. Our Safety organization is dedicated to establishing civil immersive online communities by proactively identifying, eliminating, and preventing harmful content and behaviors while ensuring robust account security. We adapt to regulatory changes and market growth through a wide array of technological solutions, including machine learning, automation, and scalable distributed systems. Collaborating closely with product teams, we utilize these resources to uncover new opportunities, influence product strategy, and build safety solutions that positively impact our community.Why Creator Trust?The Creator Trust team is prioritizing creator safety and trust as a key product focus. Our mission is to deliver a consistent, equitable, and transparent safety experience, empowering creators to develop successful experiences and marketplace assets without the challenges of unclear systems. We also support creators in safeguarding and managing their intellectual property rights across our platform. If you are passionate about empowering creators and tackling complex platform challenges, then the Creator Trust team is where you can make a significant impact.You Will:...

Feb 10, 2026
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Roblox logo
Full-time|$242.1K/yr - $293.8K/yr|On-site|San Mateo, CA, United States

At Roblox, we empower a global community of creators to design, build, and share immersive 3D experiences. Our platform connects millions of users daily, transforming the way individuals interact, learn, and play online.Our mission is to foster a billion connections rooted in optimism and respect. As a part of our innovative team, you’ll contribute to creating a future where human interaction thrives across diverse platforms and devices.Joining Roblox means tackling unique technical challenges and helping to cultivate a safe and engaging environment for players and developers alike.As a Senior Software Engineer on the Avatar Personalization team, you will leverage the Roblox game engine to develop cutting-edge features that enhance our avatar technology. Your work will result in user-friendly systems that delight our community of players. You will lead significant projects, provide technical guidance, and collaborate with various teams to create experiences enjoyed by millions of users each month.Your passion for developing exceptional systems and APIs within the Roblox game engine will be key as you enhance avatar features and customization options. Familiarity with technologies such as animation, clothing design, hair modeling, and shading will be invaluable. Experience in game or film development will also translate well to this role.

Feb 10, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

As a Senior Product Designer focused on Agentic Experience at Roblox, you will play a pivotal role in shaping the future of our platform. You will collaborate with cross-functional teams to design intuitive user experiences that empower our community. This position requires a blend of creativity, technical proficiency, and a user-centered mindset to bring innovative ideas to life.

Mar 19, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Join Roblox as a Senior Software Engineer - Engine Reliability and be a key player in ensuring the robustness and performance of our gaming engine. In this role, you will collaborate with talented engineers to develop innovative solutions that enhance the reliability of our systems, allowing millions of users to enjoy seamless gaming experiences.

Mar 17, 2026
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Delight.ai logo
Full-time|$200K/yr - $235K/yr|On-site|San Mateo, California, United States

Are you ready to revolutionize customer communications? As a Sales Engineer at Delight.ai, you won't just showcase software; you will inspire a new way of thinking about possibilities. If you're eager to be the catalyst in the room, prompting engineers to engage and executives to exclaim, 'When can we start?', then we want to hear from you!The CompanyAt Delight.ai, our mission is to forge the AI-driven workforce of the future. With over ten years of experience, we've established ourselves as the leading CPaaS platform for in-app communications, enabling seamless chat, voice, video, and messaging APIs. Trusted by over 4,000 brands, our platform processes an astounding 7 billion messages monthly, reaching 300 million active users.We have facilitated transformative conversations for industry giants such as DoorDash, Match Group, Noom, Yahoo Sports, and Rakuten, proving our competence in enhancing customer engagement.Recognizing the potential of AI to redefine customer interactions, we pivoted our strategy in December 2024, embracing an AI-first approach to customer experience. By February 2025, we launched our AI agent tailored for enterprise customer experience, leveraging a decade's worth of conversational data enriched with intelligence. Our rebranding to Delight.ai in November 2025 encapsulates our commitment to not just fulfilling customer needs but delighting them.The ProductDelight.ai serves as the AI concierge for customer experience, distinguishing itself by retaining memory and learning customer preferences over time. We ensure that each interaction—be it through chat, SMS, email, voice, or WhatsApp—maintains continuity and context, making customers feel valued and understood.Why Join as a Sales Engineer?The shift towards AI is reshaping how businesses communicate with customers. Today's buyers expect assurance that our platform not only functions but aligns with their unique architecture and team dynamics. We are at a pivotal moment, merging a decade's worth of conversation infrastructure with cutting-edge AI capabilities, and our Sales Engineers must act as trusted technical partners rather than mere presenters. Successful Sales Engineers will earn the confidence of both principal engineers and VPs of Product, utilizing AI to enhance efficiency, deliver impactful demos, and operate at unparalleled scales.The RoleIn this dynamic position, you will leverage your technical expertise to engage deeply with clients, ensuring our solutions meet their specific needs and exceed their expectations.

Mar 20, 2026
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Sony Interactive Entertainment logo
On-site|On-site|United States, San Mateo, CA

Why Join PlayStation?At PlayStation, we don’t just offer the best gaming experiences; we also provide an exceptional workplace. As a globally recognized leader in entertainment, we are proud to create innovative products and services such as PlayStation®5, PlayStation®4, PlayStation®VR, and PlayStation®Plus, along with acclaimed titles from PlayStation Studios.We are committed to fostering an inclusive environment that values diversity and empowers all employees. If you have a passion for innovation, technology, and gaming, we invite you to explore our open roles and become part of our expanding global team.The PlayStation brand operates under Sony Interactive Entertainment, a wholly owned subsidiary of Sony Group Corporation.Principal Engineer - Developer Experience (DevEx)Location: Hybrid / Remote EligibleAbout the RoleAt PlayStation, we engineer the platforms and services that power some of the world’s most iconic entertainment experiences.As our engineering team expands, the focus on Developer Experience (DevEx) has become paramount. We are investing in a cohesive, intelligent, and opinionated engineering ecosystem that empowers teams to innovate rapidly and confidently, allowing them to concentrate on delivering value.This pivotal role will influence engineering practices across PlayStation.Key ResponsibilitiesLead the design and implementation of tools and processes that enhance developer productivity.Collaborate with cross-functional teams to identify areas for improvement in the development lifecycle.Drive the adoption of best practices in software engineering and development methodologies.Mentor and guide junior engineers in their professional growth.Participate in strategic planning to align engineering initiatives with business goals.

Feb 10, 2026
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Roblox Corporation logo
Full-time|On-site|San Mateo, CA, United States

Roblox Corporation is seeking an innovative and strategic leader to take on the role of Head of Product, User Growth. In this pivotal position, you will spearhead initiatives to enhance user acquisition, retention, and engagement across our platform. You will collaborate with cross-functional teams to develop product strategies that drive growth, while ensuring an exceptional user experience. Your expertise in product management and data-driven decision making will be crucial in shaping the future of our user growth strategies.

Mar 26, 2026
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Roblox logo
Full-time|$195.8K/yr - $242.1K/yr|On-site|San Mateo, CA, United States

At Roblox, we empower millions of users to explore, create, play, and connect through immersive 3D digital experiences, all crafted by our vibrant community of developers and creators.Our mission is to redefine how people come together from any corner of the globe and on any device. We are committed to fostering a community that connects a billion people with optimism and civility, and we are on the lookout for exceptional talent to join us in this endeavor.A career at Roblox means you will be at the forefront of shaping human interaction, tackling unique technical challenges at scale, and contributing to the creation of safe, civil shared experiences for all.As a Senior Software Engineer on our Systems team, your contributions will directly impact the foundational elements of Roblox. You will develop robust software that supports our extensive community of over 2 million developers, enabling them to push the boundaries of interactive gaming. Your work will encompass various aspects of the engine, including threading, memory management, physics, and scripting. If you possess a passion for C++ and thrive in high-performance, real-time applications, you will find a welcoming environment within our Game Engine team.Your responsibilities will include:Crafting engine code in C++ for critical sub-systems within the Roblox game engine.Developing systems for data synchronization between server and client, implementing game-aware data streaming, and optimizing resource usage to ensure seamless gameplay across diverse devices.Contributing to every application developed by Roblox, from mobile clients to cloud-based servers.Your qualifications include:A minimum of 4 years of experience working on intricate challenges in extensive C++ codebases.Proficiency with system-level pointers, templates, and raw memory blocks.A strong understanding of game engine architecture or a desire to learn.Experience in building reliable, functioning systems.A curiosity and commitment to staying updated with technological advancements.

Feb 10, 2026

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