{"id":3411093,"url":"https://alion.io/job/mainspring-energy-associate-controls-engineer-electrical-systems-control","title":"Controls Engineer - Electrical Systems Control","company":{"id":5556,"name":"Mainspring Energy","domain":"mainspringenergy.com","url":"https://alion.io/company/mainspring-energy","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":82,"open_postings":19,"ghost_share":0,"stale_share":0.526,"repost_share":0,"time_to_fill_p50_days":72,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"junior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Menlo Park, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":104187,"max":122573,"currency":"USD","period":"year","gross":null,"usd_annual":122573},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CI/CD","optional":false}],"status":"live","first_seen_at":"2026-10-26T19:15:30Z","employer_posted_date":"2026-10-26","last_verified_at":"2026-10-30T12:21:59Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Overview\nDo you enjoy controlling multi-domain physical systems like robots, cars, or generators using embedded systems? Are you passionate about modeling system dynamics (linear or nonlinear), designing control algorithms, implementing them in hardware, and verifying real-world performance?\nWe have a high-impact opportunity for a Controls Engineer to join a world-class engineering team, designing and implementing new automation and control algorithms for our Linear Generator - a sophisticated, automated system with mechanical, electrical, fluid, thermodynamic, and thermal dynamics. Controls are central to its performance and behavior.\nThe Electrical Systems Control team specializes in coordinating the control of inverters, batteries, brake resistors, and generators on a common DC bus to provide consistent and reliable power. In this role, you will learn the fundamentals of each of these components to enable smooth and reliable power production. You will be paired closely with senior engineering mentors dedicated to accelerating your technical mastery, systems thinking, and long-term career growth.\nWe're looking for a driven, self-directed problem solver who thinks in systems, learns fast, takes coaching well, and is a team player. You have a strong interest in software, sensors, real-time control, and automation for dynamic systems, and you're excited about Mainspring's mission to deliver clean, affordable, and resilient power.\nResponsibilities\nAs an Associate Controls Engineer in the Electrical Systems Controls team, you will:\nHelp integrate inverters, batteries, brake resistors, and generators all on a common DC bus.\nDesign, implement, and tune control algorithms that coordinate the DC bus, batteries, and grid tie inverters, in simulation and on hardware.\nImplement algorithms and continuous-integration tests (MIL, SIL, PIL) in C++17.\nDevelop automation, diagnostics, and fail-safes for a novel integrated platform.\nAnalyze system data and refine control strategies.\nDevelop and automate test plans, test cases, and traceability matrices to ensure comprehensive coverage.\nConduct failure analysis, risk mitigation, and validation to maintain robust control performance.\nDebug sensors, actuators, and subsystems, addressing noise, disturbances, and calibration.\nSupport fleet generator operation, manufacturing testing, and reliability efforts.\nCollaborate cross-functionally with power electronics, mechanical, thermal, firmware, and test teams to define requirements, integrate multi-physics systems, implement new software features, and drive validation.\nStart by building simulation tests and supporting hardware validation of new grid tie inverter control algorithms, with a structured pathway toward taking full technical ownership of critical control subsystems.\nQualifications\nBS or MS in electrical, mechanical, or software engineering with a specialization in control systems or power systems\n2-5 years of relevant work experience\nExperience designing, implementing, and testing controls and automation algorithms in software.\nStrong communication skills and an enthusiasm for active collaboration across diverse hardware and software engineering 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