Staff Software Engineer Agent Platform jobs in Foster City – Browse 251 openings on RoboApply Jobs

Staff Software Engineer Agent Platform jobs in Foster City

Open roles matching “Staff Software Engineer Agent Platform” with location signals for Foster City. 251 active listings on RoboApply Jobs.

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companyReplit Inc. logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

Role Overview Replit is looking for a Staff Software Engineer to join the Agent Platform team in Foster City, CA. This hybrid role requires in-office presence on Mondays, Wednesdays, and Fridays. The team builds features that help users create and collaborate on code with less friction. What You Will Do Design and develop new features for the Agent Platform Improve existing systems to support collaborative coding Work closely with other engineers to deliver reliable, scalable solutions Location Foster City, CA (Hybrid). In-office days are Monday, Wednesday, and Friday.

Apr 14, 2026
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companyReplit Inc. logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

Join Replit as a Staff Software Engineer on our Enterprise Platform team. In this role, you will leverage your expertise to build robust and scalable software solutions that empower developers and businesses alike. Collaborate with cross-functional teams to shape the future of development platforms while working in a dynamic, creative environment.

Mar 24, 2026
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companyReplit logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

Join Replit, the pioneering software creation platform that empowers individuals to develop applications effortlessly using natural language. With a global community of millions and over 500,000 business users, Replit is revolutionizing software development by eliminating traditional barriers to app creation.About ReplitAt Replit, we are on a mission to create the world's most accessible AI coding agent. The Replit Agent allows anyone to turn their ideas into reality, whether it's a personal app, a groundbreaking startup idea, or a productivity tool for work. We take pride in being at the forefront of secure vibe coding, ensuring that our users can build applications securely while managing risks effectively.About the RoleAs a Senior Software Engineer on our Agent Platform team, you will develop robust tools that empower product engineers to iterate quickly on the Agent experience and enhance the core Agent functionality itself. You will serve as a vital link between the AI team, focused on core Agent logic, and the UX team, dedicated to crafting engaging Agent experiences. This role combines systems engineering, developer experience, and product engineering, addressing complex challenges from browser-based interfaces to high-performance backends and Linux systems engineering. We seek engineers who understand the product experience and can support it with efficient systems. You’ll have the chance to advance your skills across our infrastructure and product while leading impactful initiatives. We value diverse backgrounds and encourage all candidates to apply.Your ResponsibilitiesDevelop high-throughput backend applications and services, such as real-time chat functionality between users and the agent.Design a collaborative “Multiplayer Computer” that allows humans and AI agents to work together seamlessly on shared shells, filesystems, and states in real-time.Create infrastructure (both frontend and backend) that enables product engineers to deliver exceptional user experiences rapidly.Build reliable, well-structured interfaces between the Agent and both internal and external agentic systems (MCP).

Jan 18, 2026
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companyReplit logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

Replit is redefining the landscape of software development with a groundbreaking platform that empowers individuals to create applications using natural language. With millions of users globally, including over 500,000 businesses, Replit is committed to democratizing software development by removing traditional hurdles.About the Role:We are on the lookout for skilled distributed systems engineers who are eager to design and implement innovative solutions for application deployment. Your primary objective will be to enhance the infrastructure capabilities of Replit, optimize performance across various global regions, and ensure an exceptional user experience through efficient solutions. If you possess a solid foundation in software development, a thorough understanding of cloud technologies, and a proven history of delivering high-quality code, we invite you to join our team.In This Role, You Will:Advance Replit's cloud infrastructure offerings: Launch new cloud products that empower the Replit Agent to create complex applications. Collaborate with cross-functional teams to design and execute features that provide developers with a complete suite of tools for efficient application building and deployment.Boost reliability and scalability: Identify performance bottlenecks, optimize critical paths, and implement comprehensive monitoring and alerting systems. Work closely with the SRE team to guarantee high availability and minimal downtime, enabling our clients to effortlessly scale their applications to accommodate a growing user base.Enhance cloud infrastructure utilization: Assess infrastructure costs and pinpoint optimization opportunities. Develop strategies to minimize cloud expenses while maintaining performance and reliability, utilizing techniques such as resource provisioning, auto-scaling, cost-aware scheduling, and data lifecycle management. Your contributions will play a vital role in improving the financial efficiency of our cloud services.Required Skills and Experience:Expertise in distributed systems: Proven experience with platform-as-a-service, distributed storage, or information retrieval systems. A strong background in designing scalable architectures and optimizing systems for latency and cost.Innovative problem-solving: A pragmatic approach to complex challenges with the ability to devise effective solutions. You embrace radical thinking while delivering results incrementally.Self-motivated and autonomous: Capable of working independently, establishing priorities, and driving projects to completion.

Apr 4, 2025
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companyReplit logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

At Replit, we empower creativity through our innovative software creation platform, allowing users to develop applications effortlessly using natural language. With a thriving community of millions and over 500,000 businesses leveraging our tools, we're on a mission to democratize software development by eliminating traditional barriers.Role Overview:We are seeking a Senior Staff Software Engineer focused on monetization systems to spearhead our initiatives in this critical area. This role is pivotal in ensuring that our monetization strategies not only drive business success but also enhance user satisfaction. Your contributions will shape essential user journeys, as we believe that a seamless billing experience is vital to our users' enjoyment and success.Your Responsibilities:Design and implement robust monetization systems that align with Replit’s objectives.Craft intuitive payment experiences that cater to both product-led and sales-led strategies.Develop new APIs and abstractions to enable fellow engineers to effectively monetize their products.Refine pricing strategies and packaging tactics, including coupon codes and referral systems, to maximize revenue potential.Establish monitoring and feedback systems to proactively identify and resolve issues while optimizing performance metrics.Qualifications:Minimum of 6 years of engineering experience with a strong emphasis on backend development.Proven expertise in one or more areas such as:Subscription platformsUsage-based billing systemsSaaS taxationPayment processing systemsTokenization solutionsSelf-motivated and able to thrive in dynamic, ambiguous environments.Exceptional problem-solving skills with a knack for debugging complex billing challenges.Experience in building user-friendly billing interfaces that simplify intricate pricing models.Technologies We Utilize:Proficient in Python, TypeScript, React, Postgres, GraphQL, and Node.js.

Dec 18, 2025
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companyReplit logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

Join Replit, a revolutionary software creation platform that empowers individuals and businesses to develop applications using natural language. With a vibrant community of millions and over 500,000 business users globally, we are breaking down barriers to software development and making it accessible to all.About the RoleAs a key member of our Enterprise Platform team, you will play a critical role in establishing the foundational infrastructure that enables major organizations to utilize Replit within their specific security and compliance frameworks. In this position, you’ll be responsible for designing and implementing the necessary deployment flexibilities, networking capabilities, authorization systems, and data management controls that enterprises demand, from single-tenant architectures to custom policy enforcement and customer-managed encryption.You will collaborate at the intersection of cloud infrastructure and enterprise needs, working closely with our Platform Engineering, Security, and Sales teams to deliver capabilities that facilitate adoption among even the most demanding organizations.Your ResponsibilitiesDesign Enterprise Deployment Infrastructure: Craft and implement single-tenant and dedicated deployment solutions, ensuring customers can operate Replit with the necessary isolation to meet their security requirements.Develop Private Networking Solutions: Construct VPC peering, private connectivity, and static IP configurations that seamlessly integrate Replit into existing enterprise network architectures.Establish Authorization Services: Create the authorization frameworks that enforce customized enterprise policies, allowing for detailed access controls, tailored permission structures, and policy enforcement that aligns with clients' identity and governance systems.Implement Data Protection Features: Develop solutions for bring-your-own-key (BYOK) encryption, customer-managed keys, and data residency controls, empowering enterprises with control over their sensitive information.Automate Infrastructure Deployment: Write Terraform modules and automation scripts to facilitate reliable and repeatable enterprise deployments across various regions and configurations.Troubleshoot and Strengthen Systems: Engage deeply with complex infrastructure challenges spanning networking, authorization, Kubernetes, and cloud services to enhance the robustness and diagnosability of our enterprise platform.Collaborate with Go-to-Market Teams: Partner with Sales and Customer Success to gain insights into enterprise infrastructure needs and ensure alignment in delivering comprehensive solutions.

Feb 4, 2026
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companyZoox logo
Full-time|On-site|Foster City, CA

Join our innovative team at Zoox as a Software Engineer, where you will be instrumental in shaping the future of our Analytics Platform. You will work collaboratively with a talented group of engineers and data scientists to develop cutting-edge solutions that drive data insights and analytics.

Mar 25, 2026
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companyZoox logo
Full-time|On-site|Foster City, CA

Zoox is pioneering the future of transportation by designing autonomous robotaxis that prioritize safety, reliability, sustainability, and user experience. As we embark on the exciting journey of deploying our robotaxis on public roads, we invite you to join our mission and make a meaningful impact. The ML Platform team at Zoox is integral to advancing innovations in machine learning (ML) and artificial intelligence (AI), striving to create a seamless autonomous driving experience.The OpportunityAre you ready to facilitate cutting-edge ML applications that enhance autonomous driving, scene understanding, and automated mapping? In this pivotal role, you will collaborate with all ML teams at Zoox—including Perception, Behavior ML, Simulation, Data Science, Collision Avoidance—as well as our Advanced Hardware Engineering group to define our next-generation autonomous hardware. Your contributions will redefine ML practices within Zoox.At Zoox, we develop and maintain the foundation of ML tools, deep learning frameworks, inference libraries, and ML infrastructure utilized by our research teams for both in-vehicle and off-vehicle ML applications. We ensure that the requirements of both the vehicle and ML teams are met through effective coordination across the organization. In this role, you will be instrumental in accelerating the transition from ideation to production of cutting-edge AI innovations. As we expand our robotaxi deployments and explore new ML domains, the growth opportunities within our team are substantial. To delve deeper into our technology underlying autonomous driving, please visit here.

Feb 2, 2026
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companyReplit logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

Join Replit, the innovative platform revolutionizing software development by empowering individuals to craft applications through natural language. With a vibrant community of millions, including over 500,000 business users, we are breaking down traditional barriers to application creation.At Replit, we are building the most user-friendly AI coding assistant in the industry. Replit Agent is designed to help anyone transform their ideas into reality—whether it’s a personal app, a groundbreaking startup, or a productivity tool for work, our platform makes it achievable. Our comprehensive suite of tools enhances the app creation process, from integrations and storage to hosting and analytics, ensuring a smooth transition from development to production and beyond.About the Role:As a Senior Staff Software Engineer, you will play a pivotal role in advancing Replit Agent as a technical leader within the Replit Cloud organization. Reporting directly to the Vice President of Engineering, you will collaborate with the Replit Cloud team to develop our proprietary cloud infrastructure, enabling users to build, scale, and thrive entirely on Replit. You will oversee critical components such as databases, application storage, app publishing, hosting, and custom domains, which are essential to our competitive advantage.Your Responsibilities:Lead significant projects, taking new products from concept to launch, or enhancing existing offerings to attract and retain users.Collaborate closely with designers and product managers to iterate swiftly on Replit Cloud, driving continuous product enhancement.Identify and resolve critical technical and quality challenges that hinder our progress, implementing effective solutions.Mentor and nurture junior engineers, fostering their growth and contributing to team development.Deliver products and build infrastructure as a full-stack developer using technologies such as TypeScript, React, CSS, Postgres, Go, and Terraform.Potential Contributions:Utilize our distinctive cloud infrastructure to create exceptional product experiences, enabling non-technical users to overcome challenges.Implement AI agents to proactively enhance app performance, focusing on latency, reliability, SEO, and more.Participate in engineering leadership, guiding teams towards impactful projects and supporting cross-company initiatives.

Jan 27, 2026
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companyZoox logo
Full-time|On-site|Foster City, CA

At Zoox, we are embarking on an exciting mission to revolutionize urban mobility by developing a comprehensive full-stack autonomous mobility solution. Our innovative team in System Design and Mission Assurance (SDMA) is pivotal to our success, as we meticulously construct safety cases and design fail-operational systems for our autonomous driving robots ahead of their deployment on public roads.We are in search of a passionate Software Development Engineer in Test (SDET) to spearhead the development of automation frameworks, tools, and processes that ensure the highest standards of platform safety clearance and system testing. The ideal candidate will demonstrate a strong commitment to creating high-quality, robust, and reusable software infrastructure, and will be eager to enhance their expertise in complex systems thinking and validation problem-solving.Examples of tools that this role has previously supported include:* The front and back end of a Streamlit web-app designed to automate the tracking of requirements to test case traceability.* An automation framework for the execution of safety-critical tests.* A CI/CD job that identifies affected requirements and Hardware-in-the-Loop (HIL) tests from code changes while automating the execution of all linked tests.

Feb 19, 2026
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companyZoox logo
Full-time|On-site|Foster City, CA

Join Zoox as a Senior/Staff Software Engineer focusing on Operational Applications & Platforms. In this pivotal role, you will leverage your expertise to design and implement innovative software solutions that enhance operational efficiency and drive the success of our cutting-edge autonomous vehicle technology.

Mar 27, 2026
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companyAlluxio logo
Full-time|On-site|Foster City, California

About AlluxioAlluxio is at the forefront of data orchestration, providing the essential data layer for contemporary AI and analytics solutions. Our platform has been successfully implemented in production environments at eight of the top ten internet companies and seven of the ten most valuable enterprises worldwide. With a focus on unifying data across various storage systems, regions, and clouds, Alluxio delivers a high-performance distributed caching layer tailored for large-scale AI workloads.Founded by the creators of Tachyon and spun out of UC Berkeley's AMPLab, Alluxio is supported by prominent investors including Andreessen Horowitz, Hillhouse Capital, and Seven Seas Partners, positioning us at the intersection of data engineering, distributed systems, and AI infrastructure.Our technology is leveraged at scale by industry leaders such as Meta, Uber, Tencent, TikTok, Alibaba, Expedia, Rakuten, Microsoft, and Walmart, facilitating billions of data operations daily. To learn more, visit us at alluxio.io or check our profile on Wikipedia.The RoleWe are seeking skilled distributed-systems engineers to join our Core Product team and drive advancements in Alluxio’s data orchestration engine—the backbone for AI and analytics on a global scale.In the capacity of a Staff Software Engineer, you will tackle high-impact challenges such as: 1. Enhancing metadata management, caching, and replication across thousands of nodes. 2. Architecting concurrent, fault-tolerant services for multi-region and multi-cloud environments. 3. Advancing the storage abstraction and scheduling layer of Alluxio to accommodate large-scale AI/ML data workflows. 4. Collaborating with internal product teams to push the boundaries of distributed I/O performance.This position is a hands-on role that combines architecture and implementation, ideal for engineers who are passionate about deep systems work and want to make a significant impact within a small, expert team.

May 21, 2024
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company
Full-time|On-site|Foster City, California, United States

Join our innovative Motion Planning team, where you will play a critical role in enhancing the driving behaviors of our robots as they navigate public roads. Your mission will be to determine the robot's destination and devise safe routes in complex environments, such as the bustling streets of Downtown San Francisco or the iconic Las Vegas Strip.This is an exhilarating challenge that demands close collaboration with a diverse group of specialists, including experts in Planner, Perception, Prediction, and Operations. Together, you will drive the advancement of cutting-edge algorithms that enhance our robot's capabilities in navigating intricate traffic scenarios.Safety is our top priority. You will employ a systematic approach by developing modifications to the Planner, conducting simulations and closed-course tests, and collaborating with our safety drivers for real-world testing.Key Responsibilities:Develop, debug, and test features and enhancements related to driving behaviors in our production codebase.Collaborate closely with senior engineers to interpret design specifications and produce robust, high-quality code.Utilize our comprehensive backend tools to execute regression tests and validate your modifications across various driving scenarios.Engage in on-vehicle drive reviews, assisting in data collection and generating actionable insights on driving performance.

Feb 11, 2026
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companyReplit logo
Full-time|Hybrid|Foster City, CA (Hybrid) In office M,W,F

At Replit, we are pioneering a transformative platform that empowers individuals to create software using natural language, making application development accessible to everyone. With millions of users globally, including over 500,000 businesses, we are breaking down the barriers to software creation and fostering innovation.About the Position:As a Senior Staff Software Engineer at Replit, you will collaborate closely with a talented team of product and platform engineers, designers, sales representatives, and product managers to develop features that enhance user collaboration and accelerate the journey from concept to software. You will play a pivotal role in shaping the experiences of our vast user base.Your Responsibilities:Lead significant engineering projects and guide new products from inception to launch.Analyze and resolve complex technical challenges that impede progress, devising effective solutions.Define the strategic technical roadmap and ensure successful execution of projects to achieve desired outcomes.Mentor and nurture junior engineers to bolster the growth of the engineering team.Develop and deploy new features and infrastructure utilizing technologies such as TypeScript, React, CSS, GraphQL, Node.js, and Postgres.Essential Skills and Experience:At least 7 years of experience in professional software development.Demonstrated experience in a technical leadership role with a strong cross-functional collaboration background.Proficient in building full-stack applications using TypeScript.Hands-on experience developing products directly for end-users.Preferred Qualifications:Passionate about the future of programming, with experience in IDEs, terminals, or common developer tools.Previous startup experience in a versatile engineering role.This is a full-time position based in our Foster City, CA office. The role requires in-office attendance on Mondays, Wednesdays, and Fridays.Benefits for Full-Time Employees: Competitive Salary & Equity 401(k) Program...

Dec 30, 2025
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companyZoox logo
Full-time|On-site|Foster City, CA

Join Zoox as a Senior/Staff Software Engineer specializing in Perception & Sensing, where you'll work alongside a talented team of engineers from various domains including AI, robotics, and computer vision. This role offers the opportunity to innovate and implement cutting-edge technologies, contribute to research initiatives, and enhance key systems that drive our vision forward. Your expertise will play a pivotal role in the development of algorithms, software, and solutions that enhance our autonomous vehicle technology.

May 3, 2023
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company
Full-time|On-site|Foster City, California, United States

Join Sigma Software as a Database Engineer, where you will play a pivotal role in designing, building, and managing scalable and secure data storage solutions that underpin our applications and analytical processes. Collaborate with both application and data teams to craft schemas, enhance performance, and automate operations using AWS and infrastructure-as-code practices. Your contributions will significantly boost reliability, cut costs, and expedite delivery from development to production.Key Responsibilities:● Design and implement efficient and scalable database solutions tailored to business needs.● Install, configure, and upgrade database software and associated tools.● Monitor database performance while optimizing queries, indexes, and schemas for enhanced reliability and speed.● Establish and uphold database security measures to safeguard sensitive information.● Work alongside application developers to refine schema designs and SQL queries.● Diagnose and resolve incidents promptly across various environments.● Create and maintain comprehensive documentation for architecture, configuration, and operational procedures.● Engage in capacity planning and advocate for infrastructure enhancements.● Manage and support AWS database infrastructure, including RDS, Aurora, and Redshift.● Remain updated on emerging database technologies, methodologies, and industry best practices.

Sep 25, 2025
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company
Full-time|On-site|Foster City, California, United States

We are seeking a dynamic and detail-oriented QA Release Engineer to join our innovative team at Vertex Sigma Software. In this pivotal role, you will be responsible for managing the machine learning (ML) model merge queue and facilitating the release of new ML models for our vehicle systems. Your expertise will be instrumental in optimizing developer workflows and minimizing delays in branch updates.

Feb 11, 2026
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companyZoox logo
Full-time|On-site|Foster City, CA

Join our innovative team as a Senior / Staff 3D Engine Software Engineer - Simulation at Zoox. You will play a pivotal role in developing state-of-the-art 3D engine technology, contributing to groundbreaking simulation projects that enhance the capabilities of our autonomous vehicles.

Apr 6, 2026
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company
Full-time|On-site|Foster City, California, United States

Join Vertex Sigma Software as a Functional Safety Engineer in our Advanced Hardware Engineering (AHE) division. In this role, you will collaborate with systems and functional safety teams to conduct comprehensive Failure Mode Effects Analysis (FMEA) at both system and sub-system levels. Your expertise will extend into board and component level diagnostics, allowing you to provide critical insights into hardware capabilities and functionality. You will closely interact with systems and design engineers to ensure that requirements are fully understood and met, providing verification and validation of our hardware through rigorous testing.Key Responsibilities:Lead and actively engage in quantitative and qualitative functional safety initiatives that contribute to the development of detailed Failure Mode Effects and Diagnostic Analysis.Thoroughly review vendor documentation for components and boards to ascertain diagnostic capabilities.Collaborate with firmware engineers to implement diagnostics and work with the verification and validation team to confirm their effectiveness.Partner with the Test Team and Test Infrastructure team to enhance verification processes and improve diagnostic coverage.Establish new requirements to bolster the diagnostic capabilities of our hardware by working closely with both EE and FW teams.Conduct in-depth analysis of safety manuals provided by vendors for complex System on Chips (SoCs) and microprocessors.Develop requirements for safety-critical hardware to undertake Fault Injection Testing, adhering to ISO 26262:2018 standards.

Nov 20, 2025
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companyZoox logo
Full-time|On-site|Foster City, CA

At Zoox, we’re pioneering the future of transportation by developing an innovative autonomous ride-hailing service that will redefine mobility. Our Operations Tools team serves as the critical backbone of this initiative, and we are on the lookout for a highly skilled Staff Software Engineer to step into a leadership role within this influential sector. This position transcends traditional full-stack development; you will navigate the fascinating intersection of web development, robotics, and real-time operational systems, crafting the software that enables us to effectively manage and expand our fleet of autonomous robotaxis. If you are an experienced engineer who excels at tackling complex, interdisciplinary challenges and desires to make a meaningful impact in the world, we invite you to connect with us.

Oct 2, 2025

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