Senior Full Stack Engineer

Rational Dynamics creates custom AI reasoning systems for complex cognitive work. The company partners with institutional asset owners to build benchmark datasets that reflect real-world knowledge challenges. Their advanced models are validated for effectiveness, supporting clients through tailored application services. Founded by the team behind Voleon, Rational Dynamics blends deep research roots with a data-driven approach and operates as an early-stage startup. The team brings together expertise in AI, machine learning, statistics, and systems engineering. Collaboration is central, and technical rigor and creative problem-solving are core values. Role overview This is the first IT Engineer position at Rational Dynamics, based in Berkeley, CA. The role centers on designing and building an internal IT framework that meets strict compliance standards while supporting the company’s operational needs. The IT Engineer will work closely with leaders in engineering, compliance, HR, and other areas to establish best practices for protecting company and client data and enabling team productivity. Main responsibilities Develop and oversee the company’s IT infrastructure, including device management, SaaS applications, identity management, and integrations. Serve as the primary IT engineer across these areas. Design and implement secure-by-default systems, with a focus on identity and access management, endpoint security, and networking fundamentals. Proactively identify and address vulnerabilities. Lead internal SOC2 compliance efforts and manage security and auditing processes. Ensure new employees are fully set up and supported from their first day.

Rational Dynamics is hiring a Senior Infrastructure Engineer to join the team in Berkeley, CA. This role focuses on designing, building, and supporting the company’s core infrastructure systems. Role overview The Senior Infrastructure Engineer will create infrastructure solutions that align with both business goals and technical requirements. The position involves maintaining and improving systems to support reliability and performance. Collaboration with other engineers is central, especially when addressing complex technical challenges. What you will do Design infrastructure solutions to meet business and technical needs Implement and maintain systems for reliability and performance Work closely with engineering colleagues to solve technical problems Requirements Experience in infrastructure engineering Ability to work collaboratively with technical teams Motivation to take on challenging projects

Role overview Rational Dynamics seeks a Forward Deployed Engineer in Berkeley, CA. This role centers on delivering technical solutions directly to clients and collaborating with internal teams to deploy and integrate new technologies. Work happens on site, with a focus on both implementation and ongoing support. What you will do Work alongside engineering and client teams to implement and integrate Rational Dynamics products at client locations Support the introduction of new technologies, helping ensure deployments run smoothly and clients adopt solutions effectively Gather feedback from real-world use and contribute to product improvements Maintain strong client relationships by addressing technical issues and helping ensure satisfaction Requirements Technical background with hands-on engineering experience Ability to solve problems and adapt to changing situations Comfort working directly with clients as well as internal teams Interest in deploying new technologies and improving products through field experience This position is based in Berkeley, CA and involves regular on-site work with both clients and internal teams to support technology deployments.

Role overview The Senior Machine Learning Engineer at Rational Dynamics will work onsite in Berkeley, CA. The main focus is on developing and improving machine learning algorithms that power data-driven applications. This position involves hands-on work, from building models to optimizing and deploying them for greater performance and efficiency. What you will do Design, build, and fine-tune machine learning algorithms for practical, real-world scenarios Collaborate with colleagues from various disciplines to integrate models into products and workflows Deploy solutions that help drive better decision-making throughout the company

Role overview Rational Dynamics is looking for an Executive Assistant to support its C-Suite in Berkeley, CA. This position plays a central role in helping the leadership team stay organized and connected as the company expands. What you will do Oversee calendars and schedules for C-level executives Arrange meetings, handle logistics, and manage follow-up actions Support communication between departments and the executive team Working at Rational Dynamics As a start-up focused on building strong internal operations, Rational Dynamics relies on the Executive Assistant to help the leadership team work efficiently. This role is important to keeping the company’s goals on track as it grows.

Speechify is looking for a Software Engineer to join the Platform team onsite in Berkeley, CA. The focus of this role is to build and improve software that makes written content easier to access, directly supporting Speechify’s mission to help people interact with information through technology. Responsibilities Develop and enhance platform features that power Speechify’s products Work closely with colleagues in the Berkeley office to address technical challenges Share ideas and contribute code to projects that improve accessibility and the overall user experience Work Environment This is an onsite position in Berkeley, CA. The team emphasizes creativity and collaboration, working together to advance both technology and accessibility for users.

Join 21st Century Home Health Services (21HHS), where we embrace every patient with the empathy, compassion, and understanding we would show our own family members. As the largest home health agency in San Francisco and the fastest-growing in the Bay Area, we proudly serve over 4,000 patients across multiple counties including San Francisco, San Mateo, Santa Clara, Santa Cruz, Alameda, Contra Costa, Solano, Napa, Yolo, Placer, El Dorado, and Sacramento. We are also expanding our reach into Marin and Sonoma counties.Our dedicated clinicians not only care for our patients but also support one another, achieving hospital readmission rates below 10%, significantly lower than the industry average of over 15%. We have cultivated a workplace that prioritizes employee satisfaction, earning us recognition as a 2024 Top Workplace. Our environment encourages professional growth and open communication, making 21HHS a remarkable place to advance your career.Key accomplishments include:San Francisco Chronicle Top Workplaces: Ranked 3rd among medium-sized companies and 1st among home health agencies in the Bay Area.National Recognition: Ranked 12th among medium-sized healthcare companies nationwide and 1st among home health agencies.Our commitment to quality care and workplace excellence is further validated by positive feedback from patients and employees on platforms like Yelp, Google, Glassdoor, and Indeed. By focusing on engagement and satisfaction, we attract top clinical talent and deliver outstanding health outcomes.Please note: All roles at 21HHS involve fieldwork, visiting patients in their homes.This Field Physical Therapist position is an entry-level role designed to help you develop essential clinical skills in a home health environment, while also gaining valuable insights into our operational processes. The primary focus will be on follow-up visits rather than case management, with robust support provided through training, mentorship, and professional development.Work will be supervised by a Physical Therapist Case Manager.Anticipated Coverage Area: Berkeley Area

Join Our Team as a Laborer!Essel Environmental is seeking enthusiastic and driven Laborers to become part of our dynamic team in the Berkeley, CA area. This role is ideal for individuals who are eager to make a meaningful contribution to a variety of construction and environmental projects while acquiring invaluable hands-on experience in the field.As a Laborer, you will engage in diverse tasks, assisting skilled tradespeople and ensuring that projects run smoothly and safely. This is a fantastic opportunity for those looking to grow their skills in a supportive environment.How to Apply: Get started by downloading the Essel Talent App:iOS (App Store) - Download Essel TalentAndroid (Google Play) - Download Essel TalentOnce registered, explore available projects in the app and a recruiter will reach out with more details.

At Aircapture, we are committed to revolutionizing the circular carbon economy to tackle what we consider to be the defining challenge of our time: the climate crisis. Our mission is to provide commercial and industrial customers with sustainably captured CO2 from our atmosphere, striving to create a positive impact on the environment, economy, and society. We prioritize building a diverse team that embodies a wide range of perspectives, including but not limited to thought, education, gender, ethnicity, age, and sexual orientation, to achieve our ambitious goals. We appreciate your interest in joining us. As a Senior Electrical Engineer, you will play a vital role in the development and installation of our Direct Air Capture (DAC) systems. Your expertise will guide the conceptualization, design, and manufacturing processes as we collectively work towards mitigating climate change. If you are eager to make a significant impact in a pioneering climate technology startup, this position is perfect for you!

Join Aircapture, where we are pioneering innovative technology to tackle what we consider the most urgent challenge of our time: the climate crisis. Our mission involves providing commercial and industrial clients with clean CO2 captured from the atmosphere, significantly enhancing our environment, economy, and quality of life. We are committed to fostering a diverse team representing various backgrounds—thought, education, gender, ethnicity, age, and sexual orientation—to achieve our ambitious goals. Thank you for considering becoming part of our team. As a Senior Mechanical Engineer at Aircapture, you will leverage your proficiency in gas flow management and dynamic sealing to lead the design of our cutting-edge Direct Air Capture (DAC) systems. This position is based on-site at our development and production facility in Berkeley, California. If you are passionate about making a significant impact at a transformative climate technology startup, this opportunity is for you!

Join Our Mission at FAR.AIFAR.AI is a pioneering non-profit research institute focused on the critical task of ensuring that advanced AI technologies are safe and beneficial for all. Our vision revolves around fostering groundbreaking AI safety research, enhancing global awareness of AI risks and strategies, and nurturing a unified international response. Founded in July 2022, we have rapidly expanded to include over 30 dedicated professionals. Our unique non-profit status allows us to conduct technical research at a scale that surpasses traditional academic methods, while maintaining research freedom. Our findings are regularly featured in prestigious conferences like NeurIPS, ICLR, and ICML, and are cited by leading publications such as the Financial Times, Nature News, and MIT Technology Review.At FAR.AI, we tackle the challenge of enhancing AI safety through three synergistic approaches:FAR.Research - Conducting cutting-edge AI safety research in-house and providing grants to support the broader research ecosystem.FAR.Futures - Uniting key policymakers, researchers, and industry leaders to catalyze impactful change, exemplified by events like the San Diego Alignment Workshop and the Guaranteed Safe AI research roadmap co-authored with Yoshua Bengio.FAR.Labs - Providing a co-working space in Berkeley that incubates other AI safety initiatives, currently home to 40 members.About FAR.ResearchWe investigate promising avenues in AI safety and prioritize those with significant potential for impact. Upon resolving core research issues, we work to develop them into minimum viable prototypes, showcasing their effectiveness to AI companies and governmental bodies to drive adoption and implementation.

Join Rigetti Computing as a Senior Quantum Engineer specializing in Readout, where you will play a critical role in enhancing the performance of superconducting qubit readout and reset operations on our quantum processors and fault-tolerant prototypes. You will spearhead various experimental initiatives aimed at characterizing and refining measurement protocols, signal chains, amplifiers, and device configurations. Collaborating with a diverse team of engineers across theory, hardware, and chip design, you will contribute to the advancement of readout and reset speed and fidelity, propelling Rigetti's ambitious journey towards achieving fault-tolerant quantum computing systems.

Join Rigetti Computing as a Quantum Engineer, where you'll play a pivotal role in advancing our gate-based, superconducting quantum computers. Your expertise will help transform experimental concepts into progressively refined hardware performance through detailed qubit and gate characterization, innovative measurement methodologies, and thorough analysis of processor data. You will work synergistically with diverse teams across device design, cryogenic/microwave hardware, control systems, fabrication, and software, striving to expand the limits of quantum computing to achieve the scale and efficiency needed for practical implementations and error correction.This posting is intended for experimental physicists and will lead to a specific role with a concentrated focus. Areas of specialization could encompass gate calibration, qubit relaxation and dephasing, exploring new research initiatives in small processors, integrating novel concepts into larger processors, or executing quantum error correction techniques.Your profound training and accomplishments as an experimental physicist in quantum information equip you with a unique understanding of the challenges ahead — a key reason for your interest in joining our team.

Role overview As a Senior Software Engineer at Speechify, this position centers on developing and refining the core experiences within our products. The work directly shapes how people use and benefit from Speechify’s offerings. What you will do Collaborate with team members to design and implement new product features Apply modern technologies to improve how our products function Offer input and suggestions to elevate the user experience Location This role is based in Berkeley, CA, USA.

Are you ready to shape the future of energy in America? At Form Energy, we are a pioneering American manufacturing and energy technology company dedicated to revolutionizing energy storage solutions. Our innovative, cost-efficient multi-day energy storage technology is designed to ensure the electric grid remains secure and reliable, even during prolonged periods of stress. By enhancing the electric system and reimagining energy possibilities, we are giving clean energy a transformative new form!In recent years, Form Energy has garnered prestigious accolades, including recognition by TIME as a “Best Invention,” MIT Technology Review as a “Top Climate Tech Company to Watch,” and Fast Company as “One of the Next Big Things in Tech.” Our rapid progress in delivering energy storage solutions for a sustainable future is matched only by the growth of our team, which is expanding to meet increasing demand. We have established contracts with leading electric utilities across the United States, and production of our innovative iron-air batteries is underway at our first high-volume manufacturing facility located in West Virginia.Joining Form Energy is not just a career move; it’s an opportunity to be part of an extraordinary journey. As we significantly scale our battery manufacturing, now is the most exciting time in our history to become part of our mission. We are assembling a team of highly talented and motivated individuals nationwide. Guided by our core values of humanity, excellence, and creativity, we are dedicated to transforming the energy landscape for the better.Are you energized to make a meaningful impact on the world? If so, you’ve come to the right place.

About Activate GlobalActivate empowers scientists and engineers to transform innovative research into impactful market solutions. We collaborate with prominent funders and research institutions to offer the Activate Fellowship, providing essential funding, a vibrant community, mentorship, an extensive network, and the critical time needed for scientists to evolve into successful entrepreneurs.Our outcomes speak volumes: since 2015, Activate Fellows have launched 197 groundbreaking companies, securing $4 billion in follow-on funding, generating over 2,800 jobs across the U.S., and establishing multiple new market categories. Activate supports fellows in Berkeley, CA; Cambridge, MA; New York, NY; Houston, TX; and nationwide through Activate Anywhere.Position SummaryThe Fellowship Associate for Activate Berkeley plays a crucial role in providing operational support to the Activate Berkeley Community and its fellows. As an integral member of the Berkeley Fellowship team, you will coordinate and execute the overall Fellowship experience, which encompasses logistics for both virtual and in-person programming, community events, and the selection and onboarding of new fellows. You will also manage data, communicate with stakeholders (including applicants, fellows, and visitors), track Fellowship requirements, plan local events, oversee office management, and provide general support for other Activate Fellowship communities and initiatives.The Fellowship Associate reports directly to the Senior Fellowship Manager at Activate Berkeley.Primary ResponsibilitiesEvents: Organize and execute Fellowship events, including bi-weekly local programming logistics, meetings between visitors and fellows, quarterly social gatherings, and 1-2 large annual events.Calendar Management: Schedule and coordinate meetings, including regular sessions between fellows and the Managing Director, quarterly meetings between fellows and staff, office visitors, and other internal and external meetings.Office Management: Oversee the Activate Berkeley office, manage visitor coordination, liaise with building management, stock supplies, set up and dismantle in-office events, and maintain a welcoming atmosphere.Data, Reporting, and Communications: Maintain accurate fellowship records and assist the team in managing fellow data. Support reporting and communications with other Activate teams, close partners at Lawrence Berkeley Lab's Cyclotron Road program, external stakeholders, and funders/partners.

Teklysium Inc is looking for an Electrical Engineer to join the team in Berkeley, California. This position centers on designing, developing, and testing electrical systems and components within a collaborative group. Role overview As an Electrical Engineer, the work involves hands-on involvement in projects that aim to advance technology. The environment values teamwork and encourages new ideas as part of the development process. What you will do Design and develop electrical systems and components Test and refine solutions to meet project goals Collaborate with colleagues to deliver results Location This role is based in Berkeley, California.

Join Our Team as a Research EngineerAt FAR.AI, a pioneering non-profit AI research institute, we are committed to ensuring that advanced AI technologies are safe and beneficial for all. Our mission encompasses facilitating groundbreaking AI safety research, enhancing global understanding of AI risks and solutions, and promoting a cohesive global response to these challenges. Since our inception in July 2022, we have rapidly expanded to include a talented team of over 30 professionals.FAR.AI is uniquely positioned to undertake technical research that exceeds the scale of traditional academia while enjoying the research freedom inherent to non-profit organizations. Our impactful work has been presented at prestigious conferences such as NeurIPS, ICLR, and ICML, and has garnered attention from leading media outlets including the Financial Times, Nature News, and MIT Technology Review.Our approach to improving AI safety is structured around three key pillars:FAR.Research - We conduct innovative AI safety research in-house and also provide grants to support the broader research community.FAR.Futures - We unite influential policy makers, researchers, and corporate leaders to catalyze change, exemplified by initiatives like the San Diego Alignment Workshop and the Guaranteed Safe AI research roadmap developed in collaboration with Yoshua Bengio.FAR.Labs - We operate a collaborative workspace in Berkeley, fostering the incubation of various AI safety organizations, currently supporting 40 members.About FAR.ResearchOur research efforts focus on exploring promising avenues in AI safety, emphasizing the scaling of those with the highest potential for impact. Upon addressing core research challenges, we aim to develop minimum viable prototypes to validate these concepts in collaboration with AI companies and governmental bodies.

Company OverviewTerranova is at the forefront of innovation, supported by top investors in climate and American enterprise. Our mission is to create intelligent robotic systems that actively transform the Earth—enhancing land, restoring wetlands, and safeguarding vital infrastructures against floods and rising sea levels.We are dedicated to preserving the built environment, establishing new habitats, and ushering in an era of abundance. Our initiatives bolster climate resilience, disaster recovery, and protection efforts across the United States and beyond.Join our elite team and contribute to projects that have a tangible impact on the world. If you aspire to create physical solutions that reshape civilization, you belong here.Role OverviewAs a Senior Mechanical Engineer at Terranova, you will take charge of the mechanical design for large-scale industrial systems while overseeing integration across mechanical, electrical, and controls disciplines. You thrive in dynamic startup environments, taking ownership of challenges from inception to completion, and developing robust machines that perform reliably in the real world.You will spearhead projects from initial concept through field deployment, engaging in the design, analysis, fabrication, and testing of large-scale robotic systems that operate in the most demanding conditions on Earth. Expect hands-on involvement and extensive time spent in factories and field settings, collaborating closely with technicians and operators.