{"schemaVersion":"jobsearcher.job.v1","id":"9ab669d665b27f2b337262f2","url":"https://jobsearcher.com/jobs/9ab669d665b27f2b337262f2","canonicalUrl":"https://jobsearcher.com/jobs/9ab669d665b27f2b337262f2","title":"Senior Control Software Engineer","description":"About Commonwealth Fusion Systems\nCommonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.\n\nCombining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers and suppliers to build the energy industry of the future.\n\nWe’re in the best position to make it happen. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.\n\nNow we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.\n\nIf that’s you and this role fits, we want from you.\n\nSenior Control Software Engineer\nAs a Control Software Engineer, you will be responsible for the design, implementation, and verification of software and controls for advanced R&D equipment and complex machinery.\n\nAs a member of the Software Engineering team you will be a hands‑on technical contributor, a champion of writing excellent quality, production‑ready code for mission‑critical real‑time systems. You will collect functional requirements from customers and produce software solutions to meet these requirements.\n\nYou will work with a variety of engineers to integrate your software into software testbeds, hardware testbeds, and the production tools. You will also contribute to the broader software ecosystem to improve tooling and processes used across the company.\n\nWhat you’ll do\n\nDevelop control software across multiple platforms, including PLCs and real‑time Linux\n\nDevelop operator interfaces and workflows\n\nImprove software tooling to increase developer velocity and enable new capabilities\n\nWhat we’re looking for\n\nBachelor's degree in a relevant engineering field (computer science, computer engineering, electrical engineering, industrial engineering, etc.)\n\nSeveral years of experience with industrial control systems and/or embedded control systems\n\nSeveral years of experience in producing production quality control software\n\nWorking knowledge of modern software development lifecycle practices (CI/CD, git version control, unit testing, integration testing, etc)\n\nProficiency with python\n\nProficiency with at least one real‑time control language (c++, SCL/ST, rust, etc)\n\nBonus points for\n\nFamiliarity with industrial control platforms (e.g. Beckhoff TwinCat)\n\nFamiliarity with Linux\n\nExperience with industrial protocols (e.g. EtherCat, Profinet, Modbus, etc)\n\nFamiliarity with general networking (IP/UDP)\n\nMust‑have Requirements\n\nAbility to occasionally lift up to 50 lbs\n\nPerform activities such as stooping, climbing, typing, standing, sitting, etc. for extended periods of time\n\nDedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics\n\nWillingness to occasionally travel or work required nights/weekends/on‑call\n\n$140,000 - $200,000 a year\n\nBenefits\n\nCompetitive compensation with equity\n\n13 Company‑wide Holidays\n\nFlexible vacation days\n\n10 sick days\n\nGenerous parental leave policy\n\nHealth, dental, and vision insurance\n\n401(k) with employer matching\n\nProfessional growth opportunities\n\nTeam‑building activities\n\nWe value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.\n\nThis role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws\n\n#J-18808-Ljbffr","company":"Commonwealthfusionsystems5","rawCompany":"commonwealthfusionsystems5","city":"Harvard","state":"MA","isRemote":false,"isActive":false,"createdAt":"2026-06-20T05:00:49.706Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"17-2199.05","title":"Mechatronics Engineers","slug":"mechatronics-engineers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541330","title":"Engineering Services","slug":"engineering-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior Control Software Engineer","description":"About Commonwealth Fusion Systems\nCommonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.\n\nCombining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers and suppliers to build the energy industry of the future.\n\nWe’re in the best position to make it happen. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.\n\nNow we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.\n\nIf that’s you and this role fits, we want from you.\n\nSenior Control Software Engineer\nAs a Control Software Engineer, you will be responsible for the design, implementation, and verification of software and controls for advanced R&D equipment and complex machinery.\n\nAs a member of the Software Engineering team you will be a hands‑on technical contributor, a champion of writing excellent quality, production‑ready code for mission‑critical real‑time systems. You will collect functional requirements from customers and produce software solutions to meet these requirements.\n\nYou will work with a variety of engineers to integrate your software into software testbeds, hardware testbeds, and the production tools. You will also contribute to the broader software ecosystem to improve tooling and processes used across the company.\n\nWhat you’ll do\n\nDevelop control software across multiple platforms, including PLCs and real‑time Linux\n\nDevelop operator interfaces and workflows\n\nImprove software tooling to increase developer velocity and enable new capabilities\n\nWhat we’re looking for\n\nBachelor's degree in a relevant engineering field (computer science, computer engineering, electrical engineering, industrial engineering, etc.)\n\nSeveral years of experience with industrial control systems and/or embedded control systems\n\nSeveral years of experience in producing production quality control software\n\nWorking knowledge of modern software development lifecycle practices (CI/CD, git version control, unit testing, integration testing, etc)\n\nProficiency with python\n\nProficiency with at least one real‑time control language (c++, SCL/ST, rust, etc)\n\nBonus points for\n\nFamiliarity with industrial control platforms (e.g. Beckhoff TwinCat)\n\nFamiliarity with Linux\n\nExperience with industrial protocols (e.g. EtherCat, Profinet, Modbus, etc)\n\nFamiliarity with general networking (IP/UDP)\n\nMust‑have Requirements\n\nAbility to occasionally lift up to 50 lbs\n\nPerform activities such as stooping, climbing, typing, standing, sitting, etc. for extended periods of time\n\nDedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics\n\nWillingness to occasionally travel or work required nights/weekends/on‑call\n\n$140,000 - $200,000 a year\n\nBenefits\n\nCompetitive compensation with equity\n\n13 Company‑wide Holidays\n\nFlexible vacation days\n\n10 sick days\n\nGenerous parental leave policy\n\nHealth, dental, and vision insurance\n\n401(k) with employer matching\n\nProfessional growth opportunities\n\nTeam‑building activities\n\nWe value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.\n\nThis role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws\n\n#J-18808-Ljbffr","datePosted":"2026-06-20T05:00:49.706Z","dateModified":"2026-06-20T05:00:49.706Z","hiringOrganization":{"@type":"Organization","name":"Commonwealthfusionsystems5","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Harvard","addressRegion":"MA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"9ab669d665b27f2b337262f2"},"url":"https://jobsearcher.com/jobs/9ab669d665b27f2b337262f2"}}