{"id":2984221,"url":"https://alion.io/job/enphase-energy-principal-reliability-engineer","title":"Principal Reliability Engineer","company":{"id":58551,"name":"Enphase Energy","domain":"enphase.com","url":"https://alion.io/company/enphase-energy","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Jobvite","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Austin, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":130000,"max":183000,"currency":"USD","period":"year","gross":null,"usd_annual":183000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"FMEA","optional":false},{"name":"JMP","optional":false},{"name":"Minitab","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-10-21T08:14:47Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-24T20:20:12Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Description\nEnphase Energy is a global energy technology company and a leading provider of solar, battery, and electric vehicle charging products. Founded in 2006, our innovative microinverter technology revolutionized solar power, making it a safer, more reliable, and scalable energy source. Today, the Enphase Energy System enables users to make, use, save, and sell their own power. Enphase is also one of the most successful and innovative clean energy companies in the world, with more than 80 million products shipped across 160 countries.\nJoin our dynamic teams designing and developing next-gen energy technologies and help drive a sustainable future!\nPrincipal SST Reliability Lead\nAbout the Role\nThe SST Product Innovation Team in the Office of the CTO defines, prototypes, and scales Enphase's next-generation power systems. Solid-state transformers operate under extreme stress - MV switching at high frequency, wide ambient swings, thousands of thermal cycles per year, and 20+ year field life. We need a Reliability Lead who can translate real-world workload and environmental stress into quantitative test plans that expose failure modes before they reach the field.\nYou will own reliability from architecture through production - mission profiles, physics-of-failure models, accelerated life tests, and data-driven design changes. Hands-on with hardware, embedded in the design team, accountable for product lifetime.\nWhat You Will Do\nDefine and own the SST mission profile: Translate deployment conditions (load profiles, duty cycles, ambient temperatures, humidity, on/off cycling, grid transients) into a quantitative mission profile that drives all reliability testing. Update as field data becomes available.\nDesign workload-based accelerated life tests (ALT): Build test plans using physics-of-failure models (Arrhenius, Coffin-Manson, Norris-Landzberg, inverse power law). Define acceleration factors, sample sizes, durations, and pass/fail criteria per failure mode.\nLead thermal and power cycling testing: Execute thermal cycling (-40°C to +85°C+), power cycling, and active thermal cycling on power modules, solder joints, wire bonds, and DBC substrates. Correlate to field lifetime via mission-profile acceleration.\nDrive DFMEA/PFMEA: Lead cross-functional FMEA sessions tied to real test data. Track RPNs and drive corrective actions to closure.\nOwn HALT/HASS strategy: Run HALT during design to find margins and failure modes. Develop HASS profiles for production screening.\nBuild physics-of-failure models: Develop reliability models for SiC modules (bond wire, solder, die-attach), capacitors, magnetics, gate driver isolation, and connectors.\nWrite reliability test specs: Specs tied to mission profile, not generic IEC/UL conditions. Define stress conditions, load profiles, sample sizes (Weibull-based), readout intervals, and failure criteria.\nIntegrate reliability into design: Participate in design reviews from concept through production. Flag high-risk areas early and drive design changes before they get expensive.\nChampion DfR: Train engineers on mission-profile thinking, derating, thermal margins, and power electronics failure mechanisms.\nCollaborate across disciplines: Work with PE, thermal, mechanical, FW, and manufacturing teams. Partner with suppliers on component qualification.\nWho You Are and What You Bring\nBS, MS, or PhD in Mechanical Engineering, Electrical Engineering, Materials Science, Reliability Engineering, or closely related field\nPrincipal Engineer: BS + 15 yrs | MS + 12 yrs | PhD + 8 yrs\nCandidates with greater experience are strongly encouraged to apply\nMission profile development - required: Experience translating real-world use conditions (load profiles, duty cycles, environmental exposure, on/off cycling, grid transients) into quantitative mission profiles. Must understand calendar vs. operational aging and how workload severity affects lifetime.\nPhysics-of-failure modeling - required: Ability to build models using Arrhenius, Coffin-Manson, Norris-Landzberg, and inverse power law. Must derive acceleration factors from first principles.\nALT design - required: Hands-on experience designing workload-based accelerated life tests. Defining acceleration factors, Weibull-based sample sizes, test-to-field correlation, and pass/fail criteria tied to B10 or MTTF targets.\nThermal and power cycling testing - required: Direct experience with thermal shock, thermal cycling, and power cycling on power modules, solder joints, and PCBs. Understanding of ΔTj effects and dwell time sensitivity.\nDFMEA/PFMEA leadership - required: Leading cross-functional FMEA sessions with severity/occurrence/detection ratings grounded in real data.\nWeibull and life data analysis - required: Proficiency with Weibull++, JMP, Minitab, or Python/R. Fitting Weibull, lognormal, and competing-risk models to censored data. Bayesian updating and degradation modeling.\nFailure analysis: Root cause using cross-sectioning, SEM/EDS, X-ray, acoustic microscopy, dye-and-pry, curve tracing, and thermal imaging.\nPower electronics domain knowledge: SiC/IGBT module failure mechanisms (bond wire, solder, die-attach, gate oxide), capacitor wear-out, magnetic aging, connector reliability.\nComponent derating and qualification: Defining derating guidelines and critically reviewing vendor data (HTOL, TC, HTRB, H3TRB, IOL) against actual mission profile.\nHALT/HASS: Running HALT to find design limits, developing HASS profiles for production screening.\nDOE - required: Applying DOE methods (factorial, fractional factorial, response surface, Taguchi) to identify dominant stress factors and optimize product robustness.\nCommunication: Presenting reliability assessments and risk trade-offs to leadership. Defending positions in design reviews.\nSelf-driven ownership in a fast-paced environment where products are new and standards are evolving.\nWhy This Role?\nAt Enphase, reliability is not a gate you pass - it is a discipline you practice every day. The SST pushes the limits of power density, switching frequency, and voltage class with a 20+ year field life target. You will work on problems that matter, with hardware in your hands, alongside engineers who care deeply about getting it right.\nWork Location\nAustin, TX | Office of the CTO - SST Product Innovation Team\nThe base pay range for this position is $130,000 to $183,000 per year. This salary range may be modified in the future. The successful candidate’s starting pay will be determined based on job-related skills, experience, education or training, work location, and market conditions. This position is also eligible for bonus, equity, and benefits.","description_format":"text","description_chars":6665,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Solar Energy"],"lifecycle":[{"event":"open","at":"2026-10-21T08:14:47Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 24 · green card filings: 1","filings_12m":24,"filings_prev_12m":14,"green_card_filings_12m":1,"median_offered_wage_usd":141500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":30,"reasons":["conf:1","velocity","win:early"],"computed_at":"2026-10-24T06:02:35Z"},"pay":{"stated_usd_annual":183000,"is_top_pay":true},"html_url":"https://alion.io/job/enphase-energy-principal-reliability-engineer","json_url":"https://alion.io/job/enphase-energy-principal-reliability-engineer.json","meta":{"generated_at":"2026-10-24T22:05:34Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":32352,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":58551},"rest":"https://alion.io/mcp/rest/get_company?id=58551"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fenphase-energy-principal-reliability-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fenphase-energy-principal-reliability-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fenphase-energy-principal-reliability-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/enphase-energy-principal-reliability-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fenphase-energy-principal-reliability-engineer"}]}