{"schemaVersion":"jobsearcher.job.v1","id":"c174dfeae958e0e12ef62545","url":"https://jobsearcher.com/jobs/c174dfeae958e0e12ef62545","canonicalUrl":"https://jobsearcher.com/jobs/c174dfeae958e0e12ef62545","title":"Software Engineering Intern","description":"About MechanizeMechanize builds reinforcement learning environments that frontier AI labs use to train and evaluate their coding models. Learn more at mechanize.work.Why the work mattersAI models have gotten good at narrow coding tasks but still fail at the complex, judgment-heavy parts of software engineering. We build the environments that expose those failures and help models improve.What you'll doYou'll design, build, and refine RL tasks. Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading infrastructure, running frontier models against the task, analyzing where and why they fail, and iterating until the task is rigorous and fair.Coming up with good task ideas requires being clever: finding situations where a frontier model will fail in interesting ways, which means seeing gaps that the model itself doesn't see. You will use coding agents heavily, and a large part of the job is directing them well, evaluating their output, and knowing when they are failing in subtle ways.What makes someone good at thisStrong technical fundamentals combined with an intuition for AI model behavior. You need to anticipate where a model will take shortcuts, distinguish genuine capability gaps from grader issues, and understand how a model will interpret a prompt. Most engineers significantly underestimate what frontier coding agents can already do; candidates who have spent significant time working with them will have a real head start.Good fit if you:Are graduating in 2026 or 2027Can code in PythonAre confident working independentlyAre motivated by problems that require both technical skill and creative clevernessNo prior ML or AI experience requiredProbably not a good fit if you:Want a product engineering role building features for end usersPrefer a highly collaborative team environment with shared ownershipWant extensive structured mentorshipThis is independent, high-ownership work. You own your tasks from start to finish, with regular check-ins and feedback. Strong performers are recognized and promoted quickly. Benefits include 401k, health, dental, vision, and life insurance. Applying takes less than one minute.Interview process: https://www.mechanize.work/how-our-interview-process-worksLearn more about the work: https://www.mechanize.work/what-working-here-is-like","company":"Mechanize","rawCompany":"mechanize","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-04-15T03:55:03.547Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Software Engineering Intern","description":"About MechanizeMechanize builds reinforcement learning environments that frontier AI labs use to train and evaluate their coding models. Learn more at mechanize.work.Why the work mattersAI models have gotten good at narrow coding tasks but still fail at the complex, judgment-heavy parts of software engineering. We build the environments that expose those failures and help models improve.What you'll doYou'll design, build, and refine RL tasks. Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading infrastructure, running frontier models against the task, analyzing where and why they fail, and iterating until the task is rigorous and fair.Coming up with good task ideas requires being clever: finding situations where a frontier model will fail in interesting ways, which means seeing gaps that the model itself doesn't see. You will use coding agents heavily, and a large part of the job is directing them well, evaluating their output, and knowing when they are failing in subtle ways.What makes someone good at thisStrong technical fundamentals combined with an intuition for AI model behavior. You need to anticipate where a model will take shortcuts, distinguish genuine capability gaps from grader issues, and understand how a model will interpret a prompt. Most engineers significantly underestimate what frontier coding agents can already do; candidates who have spent significant time working with them will have a real head start.Good fit if you:Are graduating in 2026 or 2027Can code in PythonAre confident working independentlyAre motivated by problems that require both technical skill and creative clevernessNo prior ML or AI experience requiredProbably not a good fit if you:Want a product engineering role building features for end usersPrefer a highly collaborative team environment with shared ownershipWant extensive structured mentorshipThis is independent, high-ownership work. You own your tasks from start to finish, with regular check-ins and feedback. Strong performers are recognized and promoted quickly. Benefits include 401k, health, dental, vision, and life insurance. Applying takes less than one minute.Interview process: https://www.mechanize.work/how-our-interview-process-worksLearn more about the work: https://www.mechanize.work/what-working-here-is-like","datePosted":"2026-04-15T03:55:03.547Z","dateModified":"2026-04-15T03:55:03.547Z","hiringOrganization":{"@type":"Organization","name":"Mechanize","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"c174dfeae958e0e12ef62545"},"url":"https://jobsearcher.com/jobs/c174dfeae958e0e12ef62545"}}