Senior Software Engineer at Oklo | Santa Clara, CA or Remote

We appreciate your interest in joining Oklo! We are actively seeking a Turbomachinery Engineer to enhance our engineering team, with a goal to fill this position promptly.Position OverviewAs a Turbomachinery Engineer at Oklo, you'll leverage your expertise in rotating equipment to oversee the design, procurement, and operation of critical systems within our …

Thank you for considering a career with Oklo! We are excited to invite a talented Process Engineer to our innovative engineering team. This position is available immediately.Position OverviewAs a Process Engineer at Oklo, you will play a pivotal role in the design, analysis, and operational management of fluid and power process systems utilized in our advanced power plants.Key Responsibilities:Design fluid and process systems incorporating piping, valves, compressors, pumps, and heat exchangers.Define the architecture, specifications, operational modes, and performance criteria for process equipment.Develop prototypes for iterative design enhancement.Create comprehensive documentation for system layout, fabrication, installation, commissioning, operation, and maintenance of process equipment.Act as the process system owner throughout various lifecycle stages.Produce technical documentation for regulatory filings.Collaborate with external vendors for process equipment analysis, procurement, and testing.Document work with modern tools and techniques, and prepare clear, detailed technical reports.Desired Skills and Attributes:We seek a Process Engineer who is:Experienced in fluid/process system design, power generation, heat transfer equipment, and/or systems engineering.Passionate about clean energy and committed to advancing fission technology.A quick learner, adaptable, and open to innovative approaches.Comfortable working in a fast-paced, highly iterative startup environment.

Oklo is hiring a Materials Engineer to join the team in Santa Clara, CA, or remotely. This role shapes the foundation of Oklo’s advanced nuclear systems by guiding material choices that must perform reliably in challenging environments, including sodium-compatible seals and high-radiation structural components. Role Overview The Materials Engineer will own the material selection process for Oklo’s reactor systems. This position sits at the intersection of design engineering, materials science, and regulatory engineering. The engineer will serve as a technical authority, making decisions and building systems that help Oklo scale its approach to material selection across the company. What You Will Do Lead and execute the materials selection and governance process for reactor systems, focusing on prompt, safe, and standardized decisions. Develop and maintain Oklo’s preferred materials database and related tools to keep material knowledge organized and accessible. Serve as a technical authority for material selection by: Formulating and presenting recommendations for new materials. Evaluating requests to deviate from preferred materials and advising on risks and trade-offs. Guiding teams toward proven, scalable, and defensible solutions. Assess new materials for use in reactor systems, ensuring they meet safety and performance standards. Location This position is open to candidates in Santa Clara, CA, or remote locations.

Thank you for your interest in joining Oklo! We are on the lookout for a dedicated Regulatory Engineer to enhance our fuel recycling team. Position Overview: The Regulatory Engineer will play a pivotal role in navigating the regulatory landscape associated with the licensing of recycling and fuel fabrication facilities. This position also involves participating in the engineering design of advanced technologies. Candidates will be expected to cultivate a thorough understanding of requirements set by the Nuclear Regulatory Commission and the Environmental Protection Agency, all while embracing Oklo's innovative approach to tackling complex regulatory challenges. Specific responsibilities will vary based on your experience and interests. As we embark on groundbreaking efforts in the licensing and operationalizing of modern fuel recycling facilities, we welcome individuals motivated by success to contribute significantly to our mission! Key Responsibilities: Responsibilities may vary based on your background: Research and interpret regulations and precedents in the regulatory field. Develop, refine, and review necessary licensing documentation. Assist in managing deliverables for various internal and external regulatory activities. Collaborate with technical staff, including reviewing technical documentation. Analyze regulatory documents and highlight key elements. Contribute to technical reports submitted to regulatory bodies and other external organizations. Engage in some design engineering tasks: provide technical feedback to rapidly evolving design teams; document work using contemporary tools and techniques; and produce clear, thoughtful, and informative technical reports.

Join us in revolutionizing the future of nuclear energy! At Oklo, you'll harness your software expertise in collaboration with nuclear engineers to innovate, simulate, design, and deploy cutting-edge fission power technology. Work at the forefront of the nuclear sector, creating groundbreaking solutions that enhance safety, efficiency, and resilience. Be part of our mission to provide clean, reliable, and affordable energy through advanced fission power plants.Position Overview:As a dynamic startup, Oklo presents you with the opportunity to confront a diverse array of challenges in reactor design and analysis. While a background in nuclear science is not mandatory, a strong curiosity and willingness to learn are crucial for success in this position.Your Responsibilities:Optimize and manage reactor data storage and physics results.Design and implement CI/CD pipelines for multiphysics analyses.Create tools for reactor engineers to visualize, compare, and assess reactor designs and their physical interactions.Incorporate simulation tools into our analysis pipelines.Develop physics kernels to address unresolved issues or enhance existing models' performance.Formulate advanced reactor optimization strategies and conduct statistical experiments to guide design modifications.Identify and rectify process inefficiencies in reactor design that can be resolved through software enhancements.

Join our mission to revolutionize the future of energy with cutting-edge nuclear reactor technology! As a Junior Software Engineer at Oklo, you will collaborate with nuclear engineers to model, simulate, design, and deploy innovative fission power solutions. You will be at the forefront of the nuclear industry, contributing to advancements in safety, efficiency, and resilience. Be part of a team dedicated to providing clean, reliable, and affordable energy through state-of-the-art fission power plants.Position OverviewAt Oklo, a dynamic startup environment awaits you, where you will face diverse challenges in reactor design and analysis. While a nuclear engineering background is not necessary, a genuine curiosity and a willingness to learn are crucial for success in this role.Key Responsibilities:Transform and enhance the storage of reactor data and physics results.Design and configure CI/CD pipelines for multiphysics analyses.Create tools for reactor engineers to visualize, compare, and evaluate reactor designs and their physics.Integrate simulation tools into our analysis pipelines.Implement physics kernels to tackle unresolved issues or improve existing model performance.Develop reactor optimization strategies and statistical experiments to guide design modifications.Identify and refine process inefficiencies in reactor design that can be optimized through software solutions.

Join Oklo's innovative recycling engineering team as a Senior Process Controls Engineer. In this role, you will be pivotal in designing and overseeing process control systems at our cutting-edge fuel recycling facility. Your expertise will contribute to essential subsystems, including off-gas separation and waste immobilization.Collaboration is key; you will work closely with cross-functional teams focused on facility design, unit process equipment, and licensing to ensure seamless integration and operational efficiency.

Thank you for considering a career with Oklo! We are excited to announce an opening for a Safety Analysis Engineer to become an integral part of our innovative team. Position Overview The Safety Analysis Engineer will play a pivotal role in crafting analyses that establish the safety foundation for our reactor systems, which will be included in Oklo's licensing applications. This role involves reviewing regulatory documents and codes, developing technical strategies, executing engineering analyses, and creating comprehensive documentation. You will collaborate closely with fellow regulatory and design engineers to ensure the successful delivery of essential design and licensing milestones. Conducting safety analyses employing both quantitative and qualitative techniques Establishing safety bases for our projects Collaborating with a diverse team to define functional, performance, and safety requirements while engineering effective mitigation strategies Leading licensing projects and contributing to key licensing deliverables Overseeing projects within a multidisciplinary engineering team Creating analytical and computational models and methods Documenting findings with modern tools and producing clear, well-structured technical reports Key Competencies We seek a Safety Analysis Engineer who is: Enthusiastic about clean energy solutions Driven to turn advanced fission technology into reality Experienced in developing formal safety bases Eager to learn and adapt quickly Innovative in thinking and problem-solving Comfortable in a dynamic, fast-paced startup atmosphere Effective in communicating technical information clearly, both verbally and in writing

We appreciate your interest in joining Oklo! We are on the lookout for a dedicated Industrial Hygienist to enhance our team.Position OverviewThe Industrial Hygienist will oversee industrial hygiene programs across our active nuclear and construction job sites, ensuring compliance with OSHA, NRC, DOE, and other relevant federal and state regulations. This role is essential in advancing our Environmental, Health, and Safety (EHS) initiatives, contributing to the formulation and execution of site-wide safety programs, risk assessments, and compliance strategies. Key responsibilities include developing and delivering training programs aimed at educating employees and contractors on industrial hygiene practices, hazard recognition, and EHS requirements. Additionally, this role focuses on establishing scalable health and safety infrastructures as our operations grow across multiple sites, emphasizing program development, data analysis, cross-functional coordination, training, and fostering an overall positive EHS performance and culture.

Thank you for your interest in joining Oklo! We are actively looking for a Strategic Partnerships Manager to enhance our Corporate Development team. Position Overview As a Strategic Partnerships Manager at Oklo, you will play a pivotal role in crafting the ecosystem essential for the large-scale deployment of advanced fission technology. Your responsibilities will include identifying, negotiating, and nurturing significant relationships with a broad spectrum of global partners, ranging from industry leaders and hyperscale customers to innovative startups. This position is critical and requires a unique combination of commercial acumen, technical expertise, and adept negotiation skills. You won’t just manage accounts; you will be instrumental in constructing the commercial framework for the future of sustainable energy. Key Responsibilities: Partnership Development & NegotiationOversee the entire lifecycle of strategic partnerships, from initial discussions through to post-deal management.Foster relationships with large-scale enterprise clients, guiding them through the transition to dependable, carbon-free baseload power.Serve as the main liaison for horizontal partners (e.g., fuel cycle providers, EPC firms, and technology integrators) to ensure operational alignment.Ecosystem ManagementDevelop and sustain a strong network of adjacent startups, including Oklo’s portfolio companies, identifying synergies between emerging technologies and Oklo’s deployment strategies.Act as a strategic advisor to partner organizations, ensuring mutual value generation and alignment with Oklo’s long-term mission.Strategic Commercial AnalysisCreate complex commercial structures and incentive frameworks for long-term partnerships.Collaborate with the finance team to evaluate the economic implications of various partnership models, including Joint Ventures (JVs) and off-take agreements.Cross-Functional LeadershipRepresent the partner's interests internally, working closely with Legal, Regulatory, Engineering, and Finance teams to ensure deal terms are actionable.Prepare impactful briefing materials and strategic advice for executive leadership and the Board of Directors.Market IntelligenceMaintain a comprehensive understanding of the energy landscape, recognizing shifts in competitor strategies, government policies, and market trends.

Oklo Inc. seeks an Information Systems Security Manager (ISSM) to guide and protect the company’s technology environment. This position is open to candidates in Santa Clara, CA or those working remotely. Role overview The ISSM reports to the Senior Manager of IT and Cyber, leading the development and improvement of Oklo’s information security program. Daily responsibilities focus on maintaining the confidentiality, integrity, and availability of information systems. Regulatory compliance is central to the role, with particular attention to NIST 800-53, NIST 800-171, and Department of Energy export control requirements under 10 CFR Part 810. This leadership role combines hands-on technical work with compliance oversight. The ISSM works closely with IT, engineering, legal, and compliance teams to ensure secure system design, operational security, and audit readiness. The work environment supports advanced nuclear energy innovation and moves quickly. Key responsibilities Act as the primary authority overseeing the security of Oklo’s information systems. Implement, maintain, and improve security controls in accordance with NIST 800-53 and NIST 800-171. Integrate security requirements into system design, configuration, and operations for both on-premises and cloud-based systems. Apply, assess, and remediate system configurations using security baselines and hardening guidelines such as DISA STIGs and CIS Benchmarks, ensuring secure and compliant setups across servers, endpoints, and cloud resources. Collaborate with IT and engineering teams to support secure operations and maintain regulatory compliance.

Thank you for your interest in joining Oklo! We are actively seeking a Mechatronics Engineer to become a vital member of our nuclear fuel recycling engineering team. Position Overview The Mechatronics Engineer will play a crucial role in designing automated systems and robotic material-handling equipment for remote-operated processes within radiological hot cells at our Oklo Fuel Recycling Facility. Daily responsibilities encompass system design, CAD modeling, requirements generation, and the prototyping and integration of enhancements into various systems. This position requires close collaboration with cross-functional teams, including facility design, chemical engineering, pyroprocessing, instrumentation and controls, software engineering, process modeling, quality assurance, and licensing. Key Responsibilities: Design robotic and electromechanical systems for the remote handling of materials in high-temperature, high-corrosion, and high-radiation environments. Define architecture, specifications, control logic, and performance criteria for automated material-handling and process systems. Integrate automation hardware, sensors, and control systems to ensure reliable unmanned operations. Act as the technical lead for automation and handling systems throughout their lifecycle. Develop comprehensive documentation to guide the fabrication, installation, commissioning, operation, and maintenance of automated equipment. Create technical documentation for regulatory filings and internal knowledge capture. Build, test, and refine prototypes for automation and handling subsystems. Write clear and concise reports and communicate results effectively across various disciplines. Qualifications: We are looking for a Mechatronics Engineer who possesses: A strong academic background in Mechatronics, Robotics, Mechanical Engineering, or a related field. Experience in designing automated systems, with emphasis on robotics and material handling. Proficiency in CAD software and simulation tools. Excellent problem-solving abilities and a collaborative mindset. Strong communication skills for cross-functional collaboration.

We appreciate your interest in joining Oklo! We are on the lookout for a passionate Neutronics Analysis Engineer to collaborate with our engineering team and help manage neutron behavior effectively.Position OverviewThe Neutronics Analysis Engineer will play a key role in defining, developing, and executing both in-core and ex-core neutronics analyses, essential for reactor design, performance assessment, and safety verification. This position requires close collaboration with the design team to gather requirements, establish the parameters for neutronic evaluations, and implement suitable models and methodologies. The areas of focus include criticality, depletion, activation, and shielding analyses. Additionally, this engineer will aid in verification and validation tasks and contribute to licensing and regulatory discussions by delivering technically robust and defensible neutronics analyses.Key ResponsibilitiesConduct comprehensive support for core design and fuel cycle analysis using Monte Carlo and deterministic codes tailored for Oklo reactors.Implement calculations and analyses using Monte Carlo-based codes such as Serpent, MCNP, SCALE, and OpenMC.Utilize fast reactor deterministic codes, including DIF3D and PERSENT, for calculations and analyses.Assist in the qualification and verification of neutronic analyses, ensuring validation against experimental data and benchmarks.Stay informed about international advancements in fast reactor core design and related benchmark calculations and experiments.Provide insightful technical feedback to rapidly evolving design teams.Document findings using modern tools and create well-crafted, comprehensive technical reports.

We appreciate your interest in joining Oklo! We are on the lookout for a dedicated and detail-oriented Engineering Technician to enhance our mechanical prototyping team.Position OverviewThe Engineering Technician will collaborate with mechanical prototype engineers to create, assemble, test, and implement unique prototypes, tools, fixtures, and jigs. You will transform sketches and CAD designs into high-quality components, while ensuring a safe, clean, and organized workshop environment. Your responsibilities will encompass fabrication, assembly, test setup, instrumentation, and data collection.Key Responsibilities Include:Fabricating, assembling, and refining unique prototypes, tools, fixtures, and jigs using sketches, CAD, and verbal instructions.Interpreting drawings, tolerances, and assembly notes.Preparing stock materials through cutting, drilling, tapping, and fitting parts with common shop tools; operating basic machinery (saws, grinders, drills, manual mills/ lathes).Performing light welding tasks (MIG/TIG preferred) and assisting experienced welders as necessary.Setting up and executing mechanical tests (load, pressure, thermal, vibration, fit/function), including fixture construction and instrumentation.Installing and calibrating sensors.Collecting, recording, and organizing test data; documenting results with photographs and notes.Troubleshooting assembly and testing issues; conducting root cause analysis and implementing effective fixes.Maintaining a safe, clean, and organized workshop (5S experience is a plus); managing waste streams and enforcing PPE and safety protocols.Conducting basic preventive maintenance on shop equipment; documenting issues and coordinating repairs.Assisting with kit builds by gathering hardware and materials, labeling components, and maintaining build documentation.Handling parts procurement by sourcing COTS hardware and materials, requesting quotes, placing orders, and tracking deliveries.Receiving and inspecting incoming parts; verifying dimensions and finishes against specifications.

We appreciate your interest in joining Oklo! We are on the lookout for a dedicated Fuel Performance Engineer to enhance our team. Position Overview As a Fuel Performance Engineer at Oklo, you will play a crucial role in conducting fuel performance analyses and validating both current and future fuel designs for our Aurora powerhouses. Your responsibilities will encompass engineering analyses, modeling and simulation, comprehensive documentation of your findings, and collaboration with our reactor design, fuel fabrication, and licensing teams. Key Responsibilities: Evaluate the performance of existing and innovative fuel designs under anticipated operating conditions and potential off-normal scenarios. Develop analytical methodologies to build confidence in fuel design, which may include creating software for modeling and simulation purposes. Conduct verification and validation of modeling and simulation tools to support your analyses. Assist in experimental fuel campaigns. Work collaboratively across teams to provide insightful technical feedback to design initiatives. Utilize modern documentation tools and techniques to produce clear and concise technical reports. Desired Competencies: We seek a Fuel Performance Engineer who is: Passionate about advancing clean energy and making advanced fission technology a reality. Quick to learn and adaptable to changing challenges. Excited to collaborate in a dynamic team environment, receptive to constructive feedback, and eager to grow. Comfortable in a fast-paced startup culture that encourages innovative thinking and novel approaches. Creative and analytical in addressing engineering challenges. Proactive in proposing innovative solutions to complex technical issues. Minimum Qualifications: Bachelor's degree in engineering with a minimum of 3 years of relevant experience. Demonstrated expertise in multi-physics system performance analyses. Proficient in finite element simulation software (e.g., Ansys, Abaqus). Experience with material analysis techniques. Knowledge of an object-oriented programming language (e.g., Python, C++). Preferred Qualifications: Experience in nuclear fuel performance analysis. Familiarity with metallic fuels. Background in fuel analysis and performance evaluation.

Thank you for your interest in joining Oklo! We are on the lookout for a dedicated and analytical Mechanical Analyst Engineer to become a key member of our engineering team.The Mechanical Analyst Engineer at Oklo will focus on analyzing mechanical components as part of our power plant design process. This position is perfect for a mechanical engineer who excels at tackling complex challenges using first-principles reasoning, performing rapid hand calculations, and utilizing Finite Element Analysis (FEA) when necessary. Your contributions will be vital to the advancement and optimization of mechanical designs, collaborating closely with design, manufacturing, and testing teams, as well as coordinating with external vendors for additional analytical support.The ideal candidate will possess a solid grounding in fundamental mechanics and materials strength, with additional proficiency in dynamics, creep, fatigue, and heat transfer. A critical aspect of this role includes producing clear, traceable, and reviewable documentation of analytical work and leveraging your findings to recommend design modifications or subsequent actions. Additionally, you will help develop and maintain in-house analysis methodologies and best practices to ensure consistency, scalability, and knowledge sharing across the engineering team.Key Responsibilities:Conduct thorough mechanical analyses at various fidelity levels, from hand calculations and textbook formulas to detailed Finite Element Analysis (FEA).Collaborate with design teams to enhance mechanical component design.Document analytical processes and results clearly for review and traceability.Engage with external vendors for supplementary analysis support as needed.

Thank you for considering a career with Oklo! We are seeking a dedicated Refueling Supplier Engineer to become an integral part of our innovative team.Position OverviewIn the role of Refueling Supplier Engineer on Oklo's Refueling Team, you will take charge of the design and oversight of fabrication for our cutting-edge reactor fuel handling system. Your primary focus will be on fostering robust supplier relationships and ensuring that vendors provide high-quality hardware that adheres to technical specifications, budgetary constraints, and project timelines. You will collaborate with diverse teams across engineering, manufacturing, and operations, playing a pivotal role in actualizing the Aurora plant from concept to completion.Key Responsibilities:Collaborate with Team Lead, Engineers, and Procurement to create technical specifications, statements of work, and drawing packages that outline the requirements for Refueling Equipment, facilitating external supplier engagements.Actively participate in a rapidly expanding team to ensure vendor deliverables are consistent with the overall project budget and timeline.Oversee vendor design development to ensure adherence to plant requirements while complying with relevant codes, standards, and contractual regulations.Conduct thorough technical reviews of design documents and drawings, including Process & Instrumentation Diagrams, Technical Specifications, and all necessary analyses and calculations.Engage with vendors during manufacturing processes to manage deviation requests and compile non-conformance reports with detailed impact assessments and proposed solutions.Assist in the preparation of documentation such as installation procedures, system description documents, and design reviews.Prepare and deliver presentations on the technical scope and progress updates.Willingness to undertake foreign and domestic travel to fabricators and subcontractor facilities as necessary (less than 50%).

Oklo is looking for a Software Development Lifecycle Specialist to shape how software is built, tracked, and delivered. This position is open to candidates based in Santa Clara, CA or working remotely. Role overview This role centers on improving Oklo’s software development lifecycle. The specialist will help ensure each stage meets quality standards and complies with both internal policies and external regulations. Collaboration is key: expect to work closely with teams across the company to build out processes, tools, and governance frameworks that support engineering transparency and effectiveness. Oklo is formalizing its lifecycle approach while aiming to keep the speed and flexibility of a startup. The person in this role will help define how software is scoped, monitored, governed, and released throughout the organization. No background in nuclear technology is required. Success will come from strong systems thinking, attention to detail, a proactive approach, and curiosity about the work. What you will do Develop and maintain software lifecycle standards, templates, and workflows using GitLab and Jira. Ensure traceability across requirements, design documents, code, testing, and validation activities. Work with engineers to support accurate scoping, manage backlogs, and coordinate milestones. Partner with DevOps and Engineering Infrastructure to define standards for change control and configuration management. Support audit readiness by making sure lifecycle documentation is complete and reproducible. Define lifecycle standards such as Definition of Done and release controls. Build reporting and dashboards that highlight lifecycle health, risks, and delivery status. Spot and address gaps in the software lifecycle to improve engineering workflows. Translate compliance requirements into practical engineering processes. Evaluate and recommend tooling improvements that strengthen lifecycle integrity without adding unnecessary overhead.

Thank you for considering a career with Oklo! We are on the lookout for a passionate and skilled Fuel Fabrication Project Engineer to enhance our team.Position OverviewIn the role of Project Engineer within Oklo’s fuel fabrication division, you will play a vital role in supporting a wide range of nuclear design, regulatory licensing, procurement, and construction activities. Your responsibilities will include coordinating project timelines, initiating nuclear-grade purchasing processes, and ensuring meticulous task tracking across various facility deployments for all team members. This position is crucial for upholding nuclear safety standards, ensuring regulatory compliance, and executing projects with discipline. The ideal candidate will possess a keen eye for detail, strong technical skills, and a thorough understanding of the strict protocols necessary in nuclear environments.This role requires a high degree of collaboration and technical proficiency.Key Responsibilities:Develop and manage integrated schedules for nuclear system design, equipment qualification, procurement, and construction activities.Incorporate regulatory milestones, quality assurance/quality control steps, readiness reviews, and hold points into project timelines.Monitor progress across various engineering disciplines including mechanical, electrical, instrumentation & control, safety analysis, and licensing.Identify schedule risks, critical-path items, and long-lead nuclear components.Facilitate regular project coordination meetings to ensure alignment between engineering, licensing, procurement, and construction teams.Prepare status reports for internal leadership and regulators as necessary.Create procurement documentation for safety-related, ASME-coded, and nuclear-grade equipment.