Senior Electromechanical EngineerJoin Substrate, a pioneering force in addressing critical technological challenges in the United States. We stand at the forefront of advanced manufacturing and innovative physics, developing cutting-edge technologies that are set to transform the semiconductor industry and fortify America's technological leadership. Our team comprises world-class scientists, engineers, and technical experts dedicated to building the future of technology for the nation.As a Senior Electromechanical Engineer, you will spearhead the design and development of next-generation high-precision electrostatic chucks (ESCs) that will drive innovations within semiconductor manufacturing. This role presents an extraordinary opportunity to work at the cutting edge of semiconductor technology, collaborating with a talented team to tackle complex technical challenges and deliver top-tier solutions.

Process EngineerSubstrate is tackling a critical technological challenge in the United States. Positioned at the forefront of advanced manufacturing and innovative physics, we are pioneering technologies that will revolutionize the semiconductor sector and enhance America's position as a global technology leader. Our team comprises top-tier scientists, engineers, and technical professionals dedicated to developing state-of-the-art technology for the United States.Job SummaryAs a Process Engineer, you will play a vital role in prototyping essential components of our platform through advanced process development and materials characterization. This position involves hands-on engagement in various cleanroom and user facilities throughout the San Francisco Bay Area, where you will perform a combination of micro- and nanofabrication alongside material and structural characterization. Your responsibilities will encompass numerous nanofabrication methods, including but not limited to lithography, wet and dry deposition, and etching techniques.You will also be instrumental in the establishment of Substrate’s internal research facilities, contributing significantly to the early-stage development and testing that is crucial to our ambitious mission of reshaping the semiconductor landscape for years to come.

Join Our Team as a Senior Process EngineerAt Substrate, we are tackling one of the most crucial technological challenges facing the United States today. Positioned at the forefront of advanced manufacturing and innovative physics, our mission is to develop groundbreaking technologies that will revolutionize the semiconductor industry and fortify America’s technological leadership. We pride ourselves on our team of world-class scientists, engineers, and technical experts dedicated to crafting technology for the future.Job OverviewAs a Senior Process Engineer, you will play a pivotal role in conceptualizing and prototyping essential components of our platform through advanced process development and materials characterization. This hands-on position involves working in multiple cleanrooms and user facilities around the vibrant San Francisco Bay Area while also leading the efforts of fellow team members. You will oversee critical aspects of our fabrication process, engaging in both micro- and nanofabrication as well as characterizing the materials and structures you create. This role will encompass various nanofabrication techniques, such as lithography, wet and dry deposition, and etching.Additionally, you will contribute significantly to the establishment of Substrate’s internal research facilities. Your expertise will be instrumental in early-stage development and testing, which are vital to our ambitious mission of reshaping the semiconductor landscape for years to come.

Technical Program ManagerJoin Substrate, a pioneering force in tackling critical technological challenges in the United States. We are positioned at the cutting edge of advanced manufacturing and innovative physics, striving to revolutionize the semiconductor industry and enhance America’s technological prowess. Our team comprises elite scientists, engineers, and technical specialists dedicated to developing groundbreaking technologies.Role OverviewAs a Technical Program Manager, you will lead intricate technical programs from inception to completion, orchestrating efforts among independent scientists, engineers, and technical professionals. This role involves managing multiple interrelated workstreams where hardware development, R&D, manufacturing, and scientific validation unfold concurrently, each dependent on the other.Key ResponsibilitiesDirect technical programs that encompass hardware components and scientific validation across various simultaneous workstreams.Oversee program timelines, budgets, and resource distribution across numerous dynamic projects.Monitor critical interdependencies between R&D, hardware development, scientific validation, and manufacturing readiness.Collaborate closely with multidisciplinary scientists to convert research insights into technical specifications.Partner with hardware engineering teams for component selection, design validation, and manufacturing preparedness.Coordinate with security experts to ensure compliance with privacy and security standards across teams and projects.Manage relationships with vendors, including component suppliers, manufacturers, and testing facilities.Conduct risk assessments and implement mitigation strategies for technical and supply chain vulnerabilities.Facilitate technical evaluations and integration decisions across diverse project contributors.Report program progress, risks, and strategic recommendations to executive leadership.Develop and maintain comprehensive technical program documentation while respecting contributor independence.

Standard Cell Design LeadJoin Substrate, a pioneering force in addressing critical technological challenges in the U.S. We are at the forefront of advanced manufacturing and innovative physics, dedicated to reshaping the semiconductor landscape and enhancing America's technological prowess. Our team comprises world-renowned scientists, engineers, and technical experts committed to creating transformative technology.As the Standard Cell Design Lead, you will spearhead the development and optimization of standard cell libraries while overseeing cell characterization and library validation initiatives. This role demands a profound knowledge of digital cell design, layout, and timing characterization, along with a robust understanding of library requirements for digital design workflows. You'll collaborate with various teams across multiple locations, including external fabrication facilities, in this full-time, onsite position.

Join Our Team as a Mechanical EngineerAt Substrate, we are tackling one of the most pressing technological challenges in the United States. Situated at the nexus of advanced manufacturing and innovative physics, our team is dedicated to developing groundbreaking technologies that will revolutionize the semiconductor industry and enhance America’s technological prowess.As a Mechanical Engineer, you will play a pivotal role in designing and developing ultra-high vacuum (UHV) systems, precision mechanisms, and high-speed motion systems. This is an exciting opportunity for candidates who possess extensive hands-on engineering experience in high-precision manufacturing settings and can navigate complex technical challenges independently. You will collaborate closely with scientists, engineers, and technical specialists across various projects and locations, including external production sites. This position is full-time and office-based.

Join DoorDash Labs as an Electromechanical Technician, where you will play a crucial role in servicing and assembling next-gen autonomous delivery robots. Collaborate with a talented engineering team to tackle innovative challenges that redefine last-mile logistics. Your expertise will directly contribute to the development of cutting-edge robotic systems that serve millions of users daily.

The City and County of San Francisco seeks a Senior Stationary Engineer to help operate and maintain stationary engines and mechanical systems in city facilities. This full-time position plays a key role in keeping heating, cooling, and power systems running smoothly for the community. What you will do Operate and maintain stationary engines and related equipment in municipal buildings Monitor system performance to keep heating, cooling, and power operations efficient Handle both routine and emergency maintenance tasks as they come up Work closely with colleagues to ensure continuous city services Requirements Solid understanding of mechanical systems and stationary equipment Dedication to safety and sustainable work practices Ability to contribute effectively within a team Experience supporting building infrastructure operations Location This role is based in San Francisco.

Join us on-site in the vibrant Dogpatch neighborhood of San Francisco as a Senior Backend Engineer.About GigaGiga, a pioneering voice AI startup, has successfully secured a $61M Series A funding and boasts an impressive roster of clients including DoorDash. We are dedicated to revolutionizing the customer experience through real-time AI agents capable of understanding emotions and resolving issues instantly, while being scalable across the globe's largest enterprises.This is a pivotal moment for our company as we aim to expand our horizons. Our ambition is to position Giga as the premier AI platform for enterprise automation, driven by our cutting-edge voice superintelligence. To realize this vision, we are seeking exceptional engineers to join our team.Our engineers are empowered to make significant impacts, influencing the daily experiences of millions. This unique opportunity allows you to work alongside visionary founders, contribute to a commercially successful venture, and help shape a generational company. Here are some highlights about us:Voice AI startup Giga raises $61M Series ADoorDash and Giga PartnershipGiga is trusted by leading B2C companies around the world to manage their most complex support and operational workflows across various communication channels including voice, chat, and email. If this excites you, we encourage you to apply!The RoleWe are searching for innovative backend engineers to develop the infrastructure and systems that power our AI agents. You will engage with a variety of technologies from data pipelines and analytics to real-time agent systems, delivering features that have a direct impact on our customers' operations.This position grants you the freedom to own challenges from start to finish—identifying the optimal approach, constructing solutions, and refining them based on your findings.What You'll Work OnHere are a few key projects from our current roadmap:Analytics overhaul: Transitioning our analytics service to ClickHouse and optimizing it for the next phase of growth.Hallucination detection: Enhancing our detection systems with the aim of minimizing hallucination occurrences.Browser agent utilization: Scaling and stabilizing our systems to ensure robust performance.

Join Our Innovative TeamServal is at the forefront of revolutionizing enterprise operations through our AI-native automation platform. We specialize in developing intelligent agents that comprehend and execute real-world workflows seamlessly, replacing outdated manual processes and inflexible legacy systems with dynamic, learning software solutions. Established in 2024, we are proud to be trusted by industry leaders such as General Motors, Notion, Vercel, and more, to streamline high-volume operational tasks across their organizations.At the heart of our operations is an agentic AI platform that converts natural language into efficient, production-grade workflows. Our agents go beyond mere response mechanisms; they engage in reasoning, execute actions across various systems, and continually enhance their capabilities with use. Initially focused on operational tasks, our platform has swiftly expanded to serve diverse functions including IT, HR, Finance, Security, Legal, and Engineering.Our mission is to eradicate repetitive, manual tasks and empower teams through intelligent automation. Ultimately, we aim to construct a universal AI operations layer—a network of agents that integrates with business functions to drive seamless workflows and propel modern companies forward.Position OverviewAs the Senior IT Engineer at Serval, you will be pivotal in developing and refining our internal IT capabilities, utilizing our own ITSM platform as your primary toolkit. Your role will involve leading infrastructure projects and ensuring smooth daily operations as our company scales. This is a full-time, onsite position in San Francisco (5 days/week).This role transcends traditional IT responsibilities; it’s an opportunity to shape the future of IT service management. You will actively test our platform in production environments and provide valuable operational insights to our Product and Engineering teams. Your on-the-ground experiences will directly influence how our product serves IT professionals globally.

About AirwallexAirwallex is a revolutionary unified payments and financial platform designed for global enterprises. Leveraging our unique blend of proprietary technology and software, we empower over 200,000 businesses globally, including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN, providing them with comprehensive solutions for managing business accounts, payments, spend management, treasury functions, and embedded finance at a global scale.Founded in Melbourne, we boast a diverse team of over 2,000 innovative professionals across 26 offices worldwide. With a valuation of US$8 billion and support from prominent investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, and Salesforce Ventures, Airwallex is at the forefront of developing the future of global financial platforms. Join us to embark on the most ambitious journey of your career.

Join Our Team at GridwareGridware, a pioneering technology firm based in San Francisco, is committed to enhancing and safeguarding the electrical grid. We have developed an innovative class of grid management known as Active Grid Response (AGR), which focuses on monitoring critical electrical, physical, and environmental parameters that influence grid reliability and safety. Our state-of-the-art AGR platform employs high-precision sensors to identify potential issues at an early stage, facilitating proactive maintenance and fault mitigation. This holistic approach promotes safety, minimizes outages, and ensures optimal grid performance. Backed by notable climate-tech and Silicon Valley investors, we are on a mission to redefine grid management. For more details, visit www.Gridware.io.Role OverviewWe are seeking a detail-oriented, technically proficient Senior IT Engineer to join our dynamic team. In this pivotal role, you will spearhead network architecture and facility build-outs, champion IT compliance initiatives, and oversee cross-functional projects from inception to successful completion. This is a highly impactful position ideal for a professional who excels in building robust systems, enforcing critical standards, and delivering complex technical projects within a fast-paced, growth-oriented environment.

At Comulate, we are revolutionizing the insurance back office through the power of AI. Our innovative platform streamlines costly and labor-intensive accounting processes, marking the beginning of our mission to unlock the vast sums spent on manual insurance operations. Our Series B funding, announced in early 2025 and led by BOND & Workday, follows a period of remarkable growth and ambitious expansion plans.Why Join Us?Unprecedented growth trajectory, achieving 8-figure ARR within just three years, placing us in the 95th+ percentile of startup growth.Demonstrated strong product-market fit, with users praising our platform as “the best thing since sliced bread” and “life-changing”.A lean and talented team focused on developing category-defining products for prominent public and private enterprises, driving significant ROI and sustainable operations.We are making bold, innovative bets for a dedicated customer base, with an exciting pipeline of new clients on the horizon.We are just beginning to realize our vision and are well-positioned to integrate AI into crucial workflows across the insurance sector.Role OverviewWe are seeking a Senior Software Engineer to join our in-office team in San Francisco. You will be responsible for developing essential systems, services, and customer-facing features from start to finish. Your work will involve transforming high-level objectives into tangible outcomes, navigating ambiguity, and innovating to discover optimal solutions. As an early member of our team, you will play a crucial role in shaping our company culture and team dynamics.Our technology stack includes: TypeScript, Node, Postgres, React, GraphQL (Apollo), and Next.js.Discover more about our engineering culture and insights on our engineering blog.Are You a Good Fit?A strong desire to innovate and improve software processes.

About AirwallexAirwallex stands as the leading unified payments and financial platform for businesses operating on a global scale. With our innovative blend of proprietary infrastructure and software, we empower over 200,000 enterprises worldwide—including renowned names such as Brex, Rippling, Navan, Qantas, and SHEIN—by providing fully integrated solutions that encompass business accounts, payments, spend management, treasury services, and embedded finance.Founded in Melbourne, we boast a dynamic team of over 2,000 talented professionals across 26 global offices. Valued at US$8 billion and supported by top-tier investors like T. Rowe Price, Visa, Mastercard, and Sequoia, Airwallex is at the forefront of sculpting the future of global payments and financial services. If you are poised to undertake the most ambitious work of your career, we invite you to join us.Attributes We ValueWe seek builders with entrepreneurial spirit who are eager to make a significant impact, accelerate their learning, and take true ownership of their work. You should possess strong expertise in your role, coupled with sharp analytical skills. Your motivation aligns with our mission and operating principles. You are quick to act with sound judgment, driven by curiosity, and make decisions based on first principles, effectively balancing speed and thoroughness.Collaboration and humility are key traits; you transform innovative concepts into tangible products and possess a strong ability to execute projects from start to finish. Leveraging AI to enhance productivity and solve problems efficiently is part of your approach. In this role, you’ll address complex, high-visibility challenges alongside an exceptional team, advancing your career as we redefine the landscape of global banking.About the TeamThe Corporate IT team encompasses our IT support, IT engineering, and business engineering functions at Airwallex. The IT Engineering team is pivotal in shaping our technological landscape, managing everything from communication tools and video conferencing to overseeing our computers, applications, and identity and access management. We design, develop, and operate the systems and services that our Airwallex teams utilize to innovate our products, serve our customers, and conduct our business operations. Collaboration is essential, as we partner with every department—from Finance to Engineering, People Operations, and Support—to address challenges and create effective solutions.What You’ll DoAs a Senior IT Engineer, you will lead the resolution of technical challenges faced by our business and IT operations teams. You will...

Briefly is leveraging artificial intelligence to enhance the efficiency of law firms. We are seeking a Senior Engineer to join our dynamic team and contribute to the development of our innovative product. The ideal candidate will appreciate the fluidity of early-stage projects and thrive in a rapidly evolving environment. Key Responsibilities- Engage actively in evaluating and implementing product requirements.- Contribute significantly to architectural decisions and discussions.- Independently write clean, efficient, and thoroughly tested code. Technology Stack- Proficient in TypeScript/JavaScript (web & Node)- Experienced with React- Knowledgeable in SQL (PostgreSQL)- Familiar with Git/GitHub including GitHub Actions Additionally, you will have the opportunity to work with and expand your skills in the following technologies:- Azure OpenAI API- pgvector- Supabase- Azure cloud services We adhere to an Agile development methodology, focusing on continuous integration and deployment. Experience in this type of environment is advantageous. Company CultureOur ideal candidate flourishes in a talented team that is dedicated to producing exceptional work. Our CTO, Chris, brings valuable insights from his experience with multiple startups, helping us navigate common pitfalls.We aim to foster an environment where individuals can take pride in their contributions, where thoughtful goal-setting supersedes frantic heroics, and where ownership is not only encouraged but is a fundamental part of our ethos. You will have both the freedom and responsibility to take charge of projects that inspire you. Join us in transforming the legal technology landscape and making a significant impact in the industry! For more information about this role, please reach out directly to Chris via email. Visit our website at https://briefly.legal for more details.

Join Our TeamAt Stytch, we pride ourselves on being the premier identity platform tailored for developers. Our innovative features, such as device fingerprinting and secure account takeover-resistant authentication, empower businesses to manage identity and access with confidence. As a Senior Software Engineer, you will collaborate closely with leadership to elevate our product experiences to unparalleled levels. Your role will involve architecting solutions across our technology stack, overseeing the design and implementation of team projects, and focusing on the most vital initiatives on our product roadmap.This is a hybrid full-time role based in the SF Bay Area. While we value in-office collaboration, we understand the importance of flexibility. We aim for team members to work in the office three days a week, fostering strong connections while allowing for remote work flexibility.What Inspires YouA collaborative workspace that allows you to see the direct impact of your work on user experience.A passion for mentoring fellow engineers and nurturing the next generation of engineering leaders at Stytch.The ability to envision future system designs while delivering incremental improvements and making strategic trade-offs to accelerate value delivery.A deep pride in your code, with a commitment to writing, reviewing, and maintaining high-quality software.An eagerness to shape team culture and drive growth through effective recruitment of senior engineers and streamlined operational processes.A desire to create user-friendly products that simplify the lives of developers both internally and externally, enhancing the experience for Stytch's customers.What We Seek5+ years of experience as a backend or backend-focused full-stack engineer.Basic familiarity with frontend technologies (ability to debug frontend as necessary; frontend expertise not mandatory).Experience with Go, Node.js, TypeScript, and React.

Senior Software EngineerEngineeringProlific is at the forefront of AI innovation, crafting the essential human data infrastructure that is transforming the AI development landscape. In an era where foundational AI technologies are becoming increasingly common, it is the quality and diversity of human-generated data that sets apart leading products and models.The roleWe seek impact-driven Software Generalists to join our expert team dedicated to supporting frontier model creators and enterprise AI application developers. As a full-stack engineer, you will collaborate across Prolific’s various domains to address customer and product challenges.This position offers an exhilarating chance to engage directly with pioneering AI companies, making vital technical decisions that balance agile startup execution with scalable, reliable engineering practices, as Prolific transforms research within the AI community. You will regularly collaborate in person with customers and our US team, while also working closely with our technology teams based in the UK.What you’ll bring to the roleOver 4 years of experience in a product engineering roleAbility to translate business concepts into effective software modelsCapacity to quickly learn and adapt across the breadth of Prolific’s domainsExperience working with both monolithic and distributed systemsExcellent communication and collaboration skills for direct customer interactionStrong understanding of modern web applications and architecture design patternsExperience in supporting applications within production environmentsSound judgment in technical decisions

Join Our Team as a Senior Node.js Engineer!At The League, we’ve achieved product-market fit and developed a successful business model, and we’re excited to expand our founding engineering team with passionate individuals who want to take ownership of significant parts of our product and embark on this journey with us.We are on the lookout for a highly skilled Senior Node.js Engineer to bolster our back-end systems. This role is perfect for someone adept in distributed systems and eager to engage across the entire technology stack. While our app is recognized as an exclusive dating platform, we have grand aspirations for our product, and we need your expertise to realize that vision.As our lead Node.js architect, you will be pivotal in enhancing the quality, features, and scalability of The League App. We seek an exceptional backend engineer who has experience scaling platforms, possesses natural leadership qualities, and is hands-on in back-end development. You will set high standards for quality and be instrumental in delivering an unparalleled app experience.Our Technology Stack: The League app utilizes Node.js, Postgres, Redis, and ElasticSearch, with an iOS and Android frontend.About Our Team: Our engineering team is rapidly growing, and as our second full-time hire, you will have a substantial impact, ownership, and opportunities for leadership. Currently, our team collaborates with about eight engineering contractors and has another eight full-time staff in support, product, and marketing roles.Your Responsibilities:Lead the Node.js backend development for our iOS and Android app, including the matching algorithm.Develop new features, resolve bugs, and propose projects to enhance the product and infrastructure.Collaborate with our Director of Engineering to cultivate a top-tier engineering culture.Make autonomous technical and product decisions aligned with our roadmap.Conduct interviews for full-time engineering roles.Mentor junior engineers to foster their growth.Establish deployment workflows to maximize productivity.Perform code reviews to ensure adherence to best practices.Support DevOps initiatives as needed and assist in the search for a dedicated DevOps team.

The Center for AI Safety (CAIS) is at the forefront of research and advocacy dedicated to addressing the societal-scale challenges posed by artificial intelligence. Our mission is to mitigate the risks associated with AI through innovative technical research, initiatives to foster the field, and strategic policy engagement. Together with our sister organization, the Center for AI Safety Action Fund, we tackle some of the most pressing issues in AI today. In the role of Senior Research Engineer, you will immerse yourself in the dynamic intersection of pioneering machine learning research and dependable engineering practices. You will own research projects from inception to publication, working autonomously with guidance from an advisor. Your responsibilities include designing and conducting experiments on large language models, developing the necessary tools for large-scale model training and evaluation, and transforming findings into research publications. You will collaborate closely with CAIS researchers, as well as external academic and commercial partners, utilizing our compute cluster for extensive training and evaluation. Your work will cover critical areas such as AI honesty, robustness, transparency, and the investigation of trojan/backdoor behaviors, all aimed at reducing the real-world risks posed by advanced AI systems.

Join our dynamic team at abridge as a Senior IT Systems Engineer. In this pivotal role, you will leverage your expertise to design, implement, and maintain robust IT systems that drive our business operations forward. Collaborate with cross-functional teams to innovate and enhance our technological infrastructure, ensuring seamless integration and optimal performance.