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.

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.

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.

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.

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.

About Mariana Minerals Mariana Minerals is a software-driven minerals company based in San Francisco. The team supplies essential minerals for the energy, artificial intelligence, and defense industries. By combining deep industry knowledge with advanced software, automation, and data strategies, Mariana Minerals is rethinking how minerals reach the world’s most critical sectors. Internship Overview The Process Engineering Intern will join the Pilot Plant Operations team at Mariana Minerals’ San Francisco headquarters. This internship offers the chance to work on meaningful, hands-on projects in mineral processing. Interns conduct benchtop experiments, support pilot plant test runs, and help develop new operational programs. Close collaboration with experienced engineers and subject matter experts is a core part of the experience. This role focuses on building and delivering new solutions, not just supporting existing work. What You Will Do Run experiments in both lab and pilot plant settings to help reduce risks in scaling up minerals processing. Develop, test, and refine approaches to improve product recovery, minimize equipment downtime, control costs, and support health and safety. Work with engineering, management, and software teams to create programs and tools that advance operational goals. Collaborate with cross-functional groups, including operations and analytical labs. Present findings and insights at the end of the internship. What We’re Looking For Current student or recent graduate in chemical engineering, metallurgy, materials science, or a related field. Strong grasp of process design, thermodynamics, and reaction engineering. Hands-on experience in laboratory, pilot plant, or commercial plant settings through coursework, projects, or previous internships. Skilled in experimental design, troubleshooting, and independent analysis of complex data. Clear technical writing, communication, and collaboration abilities. Comfortable adapting to new challenges and working in a changing environment. Why Mariana Minerals? Interns at Mariana Minerals join a mission-driven team working to transform the global sourcing and supply of critical minerals. Every contribution supports a larger vision for the future of the industry.

About UsAt Foundry Robotics, we are pioneering an AI-native robotics manufacturing enterprise dedicated to enhancing assembly and production capabilities for top-tier robotics firms and critical national-security hardware. Our vision is to create robots that construct robots, effectively transforming the landscape of manufacturing.We are on a mission to revolutionize the American manufacturing sector by prioritizing AI-driven solutions and assembly-focused strategies as a dual-use contract manufacturer. Our goal is to equip manufacturers with intelligent, efficient, and adaptable robotic systems that redefine productivity and quality. As a key member of our engineering team, your contributions will significantly influence our products, workplace culture, and overall success. Please note that this position requires 100% in-person work at our Mission District office in San Francisco.The RoleWe are seeking a Manufacturing Process Engineer who excels at transforming innovative ideas into practical production realities. You will be comfortable designing systems from the ground up and validating them directly on the factory floor. Your primary responsibilities will include defining the architecture of our robotic systems from initial concept through to full-scale production, developing assembly strategies, designing tooling, and creating workflows where they do not currently exist. You will establish production capabilities from scratch, making critical decisions concerning sequencing, fixturing, automation integration, and quality control. Your focus will be on driving rapid build-test-learn cycles to implement robust and scalable processes.Key ResponsibilitiesDesign and develop production processes from the ground up for autonomous robotic assembly systems, establishing how AI-driven hardware is manufactured at scale.Optimize assembly lines with a focus on throughput, yield, and scalability as production transitions from initial stages to high-volume outputs.Create and maintain process documentation, work instructions, SOPs, and control plans to enable repeatable and scalable manufacturing.Develop tooling and fixtures aimed at reducing variation, minimizing operator error, and supporting efficient assembly processes.Engage hands-on on the shop floor to validate processes, pinpoint bottlenecks, and iterate quickly alongside the team.Foster relationships with external vendors and contract manufacturers, providing valuable process insights and feedback during development.Collaborate across disciplines with mechanical, electrical, and robotics teams to ensure processes are designed with the entire system in mind.

Join Our TeamAt Unity Technologies, we are on a mission to create a powerful, near real-time reporting platform that is essential for analytics and decision-making across our expansive ecosystem. We are in search of a talented Data Engineer who will play a pivotal role in architecting and implementing distributed data systems that enable this platform to operate at scale.In this dynamic role, you will design and construct high-throughput, low-latency data processing pipelines that support reporting functionalities for both internal teams and external clients. You will work at the forefront of distributed systems, stream processing, and cloud-native infrastructure, ensuring the reliability, correctness, and scalability necessary for a high-volume production setting.This is an impactful position where your engineering excellence, architectural vision, and ownership of production will be highly valued.

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 Mariana Minerals as a Senior Pyrometallurgical Process Engineer in our San Francisco headquarters. In this crucial role, you will leverage your expertise in pyrometallurgical processes to drive innovation and efficiency in our operations. Collaborate with a team of dedicated professionals to develop and implement cutting-edge solutions that enhance our mineral processing capabilities.

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.

About FluidstackFluidstack is revolutionizing the foundation of artificial intelligence by creating infrastructure that powers abundant intelligence. Collaborating with leading AI laboratories, government entities, and industry giants like Mistral, Poolside, and Meta, we are committed to facilitating compute capabilities at unprecedented speeds.Our mission is to accelerate the realization of Artificial General Intelligence (AGI). We are driven by a strong sense of urgency and a commitment to providing world-class infrastructure. Our focus is on ensuring our customers achieve their desired outcomes, and we take pride in the systems we create and the trust we cultivate. If you are passionate about purpose, dedicated to excellence, and eager to contribute to shaping the future of intelligence, we invite you to join our team.About the RoleAs Fluidstack continues to expand rapidly to cater to the needs of the foremost AI organizations globally, we are seeking a Senior Manager for Business Process Controls to ensure operational excellence aligns with our ambitious technical goals. You will be responsible for designing, implementing, and continuously enhancing the vital processes that drive our business, including customer onboarding, vendor operations, internal workflows, and cross-functional collaboration. Collaborating closely with Engineering, Finance, Sales, and Operations teams, you will work to eliminate inefficiencies, enhance operational efficiency, and establish scalable systems that facilitate Fluidstack's growth without disruptions. This role is highly impactful and visible, ideal for an individual who excels at the intersection of strategic planning and execution.

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.

Who We AreAt Twelve Labs, we are at the forefront of creating innovative multimodal foundation models capable of understanding videos as humans do. Our groundbreaking models have set new benchmarks in video-language modeling, enhancing our capabilities and fundamentally changing how we engage with and interpret diverse media formats.Backed by an impressive $107 million in Seed and Series A funding, our organization enjoys support from prestigious venture capital firms including NVIDIA's NVentures, NEA, Radical Ventures, and Index Ventures, along with visionary leaders in AI such as Fei-Fei Li, Silvio Savarese, and Alexandr Wang. With our headquarters in San Francisco and a significant presence in Seoul, our global reach reflects our dedication to fostering innovation worldwide.We celebrate the individual journeys of our team members, recognizing that our diverse cultural, educational, and life experiences enable us to continuously challenge the status quo. We seek passionate individuals who resonate with our mission and are eager to create a meaningful impact as we expand the horizons of technology to reshape the world. Join us in our quest to revolutionize video comprehension and multimodal AI.About the RoleAs a Senior Backend Software Engineer at Twelve Labs, you will play a pivotal role in developing the server-side infrastructure that powers our new agentic application layer. You'll be an integral part of a small, high-impact team, taking ownership of the essential transition from prototype to a production-ready platform.Travel Requirements: Up to 25% travel to Los Angeles is expected.Candidates should be prepared to travel up to 10% annually for conferences, off-site meetings, and other business-related activities as required. This position may involve participating in on-site interviews and in-person onboarding processes.Your ResponsibilitiesBackend DevelopmentDesign and implement backend services for video processing workflows, including ingestion, transcoding, 4K export, metadata extraction, and timeline operations.Architect scalable and reliable systems to support enterprise-level video workloads using cloud-native infrastructure (AWS, GCP).Develop and optimize APIs that power real-time and asynchronous frontend workflows, focusing on streaming data delivery and long-running job orchestration.Ensure performance and reliability of distributed video processing pipelines, meeting low latency and high throughput requirements.

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.