{"id":1654361,"url":"https://alion.io/job/psiquantum-cryogenic-electrical-interconnect-engineer","title":"Cryogenic Electrical Interconnect Engineer","company":{"id":1616,"name":"PsiQuantum","domain":"psiquantum.com","url":"https://alion.io/company/psiquantum","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":93,"open_postings":69,"ghost_share":0.029,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":114,"computed_at":"2026-10-06T05:45:30Z"}},"role":"Hardware","role_family":"Hardware","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Milpitas, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":126600,"max":148700,"currency":"USD","period":"year","gross":null,"usd_annual":148700},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[],"status":"live","first_seen_at":"2026-10-01T16:15:44Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-06T20:53:10Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":4},"description":"PsiQuantum's mission is to build the first useful quantum computers: machines capable of delivering the breakthroughs the field has long promised. Since our founding in 2016, our singular focus has been to build and deploy million-qubit, fault-tolerant quantum systems. \nQuantum computers harness the laws of quantum mechanics to solve problems that even the most advanced supercomputers or AI systems will never reach. Their impact will span energy, pharmaceuticals, finance, agriculture, transportation, materials, and other foundational industries. \nOur architecture and approach is based on silicon photonics. By leveraging the advanced semiconductor manufacturing industry, including partners like GlobalFoundries, we use the same high-volume processes that already produce billions of chips for telecom and consumer electronics. Photonics offers natural advantages for scale: photons don't feel heat, are immune to electromagnetic interference, and integrate with existing cryogenic cooling and standard fiber-optic infrastructure. \nThat approach has since been tested at the highest level of scrutiny the U.S. government applies to emerging technology, and it has held up. In 2025, PsiQuantum closed a $1 billion funding round that valued the company at $7 billion. In 2026, the U.S. Department of Commerce signed a $100 million Letter of Intent under the CHIPS and Science Act, followed by a $125 million agreement with DARPA under Stage C of its Quantum Benchmarking Initiative, PsiQuantum's most valuable U.S. government agreement to date. This year, we also broke ground on our utility-scale quantum computer in Brisbane, Australia, and continued building out our Chicago site. Victor Peng, our CEO, and co-founder Jeremy O'Brien, now Executive Chairman, lead a team and board that reflects how seriously the world is taking this build, joined this year by Intel's Lip-Bu Tan and Atomico's Niklas Zennström. \nPsiQuantum also develops the algorithms and software needed to make these systems commercially valuable. Our application, software, and industry teams work directly with leading Fortune 500 companies, including Airbus, Lockheed Martin, Mercedes-Benz, Boehringer Ingelheim, and Mitsubishi Chemical, to prepare quantum solutions for real-world impact. \nQuantum computing is not an extension of classical computing. It represents a fundamental shift, and a path to mastering challenges that cannot be solved any other way. The potential is enormous, and we now have the funding, the government validation, and the sites under construction to make it real. \nJob Summary:\nThe Cryogenic Electrical Interconnect Engineer is responsible for the design, development, integration, and testing of electrical interconnect solutions used within PsiQuantum's cryogenic systems.\nThis role focuses on cables, connectors, electrical feedthroughs, and PCB interconnects operating in vacuum and cryogenic environments. The engineer develops the electrical connection architecture required to interconnect components within the cryostat, provide reliable connections at cryogenic temperatures, and route electrical signals through the cryostat vacuum boundary to external equipment.\nThe Cryogenic Electrical Interconnect Engineer combines electrical and mechanical engineering expertise to develop interconnect solutions that meet electrical performance, thermal, mechanical, vacuum, and integration requirements. The role supports engineering activities from concept development through detailed design, component selection, qualification testing, manufacturing, installation, and troubleshooting.\nThe ideal candidate combines electrical interconnect expertise with strong mechanical engineering judgment and an understanding of the challenges associated with vacuum and cryogenic environments.\nThey are comfortable working at the interface between electrical, mechanical, thermal, and cryogenic engineering and can translate electrical connectivity requirements into practical cable, connector, feedthrough, and PCB interconnect solutions.\nThey are able to move between detailed 3D design, component selection, engineering analysis, supplier coordination, hands-on testing, integration, and troubleshooting. Success in this role requires attention to detail, practical engineering judgment, and effective collaboration across electrical, mechanical, cryogenic, system, and supplier teams.\nResponsibilities:\nDesign electrical cables and cable assemblies for operation in vacuum and cryogenic environments.\nDesign electrical feedthroughs and interconnect solutions across cryostat vacuum boundaries.\nDesign and integrate electrical connectors for PCB and electronic components operating at cryogenic temperatures.\nDevelop interconnect architectures between electronic components located inside the cryostat and external room-temperature equipment.\nSelect cables, conductors, connectors, feedthroughs, insulation materials, and associated components based on electrical, thermal, mechanical, vacuum, and cryogenic requirements.\nEvaluate thermal conduction through electrical cables and interconnects and contribute to the management of cryostat thermal loads.\nDesign cable routing, mechanical supports, strain relief, and thermal anchoring solutions within the cryostat.\nEvaluate mechanical and thermal effects on connectors and cable assemblies, including differential thermal contraction during cooldown and warmup.\nDevelop 3D CAD models, drawings, interface definitions, and specifications for cables, connectors, feedthroughs, and associated mechanical components.\nWork closely with electrical, mechanical, PCB, cryogenic, and system engineering teams to define and manage interconnect requirements and interfaces.\nSupport component selection and qualification through engineering analysis and testing.\nDevelop and execute test plans to validate electrical, mechanical, thermal, vacuum, and cryogenic performance of interconnect components and assemblies.\nSupport procurement and manufacturing activities and work directly with cable, connector, feedthrough, and electronics suppliers.\nSupport installation, integration, commissioning, and troubleshooting of electrical interconnect systems within cryogenic equipment.\nAnalyze field and test issues related to electrical interconnects and develop technical solutions where required.\nExperience/Qualifications:\nRequired Qualifications \nBSc Courses, Eligibility, Fees & Verified Programs | B.SC. or M.Sc. in Electrical Engineering, Mechanical Engineering, Electromechanical Engineering, or a related engineering discipline.\n3+ years of experience designing electrical interconnects, cable assemblies, connectors, electronic packaging, or related electromechanical systems.\nProfessional experience with connectors and cables for electronic components and systems.\nStrong understanding of electrical interconnect design, including conductors, insulation, connectors, shielding, grounding, and signal integrity considerations.\nGood understanding of mechanical engineering principles relevant to connector and cable design, including tolerances, mechanical interfaces, strain relief, and material selection.\nExperience designing components and assemblies using 3D CAD software. Experience with Siemens NX is preferred.\nAbility to develop engineering drawings, specifications, interface definitions, and component requirements.\nAbility to work across electrical and mechanical engineering disciplines to develop integrated solutions.\nAbility to adapt to changing requirements and handle multiple assignments.\nRequired Qualifications \nExperience designing cables, connectors, or electrical feedthroughs for vacuum and/or cryogenic environments.\nExperience with cryogenic electronic systems and electrical interconnects operating at cryogenic temperatures.\nExperience with superconducting cables, superconducting electrical connections, or other low-temperature electrical technologies.\nUnderstanding of material behavior at cryogenic temperatures, including differential thermal contraction and its impact on electrical and mechanical interfaces.\nUnderstanding of thermal conduction through electrical wiring and methods for thermal anchoring of cables within cryogenic systems.\nExperience with hermetic electrical feedthroughs and vacuum-compatible connectors and materials.\nExperience with PCB connectors and electronic packaging for cryogenic applications.\nExperience with low-noise, high-density, high-frequency, or other performance-sensitive electrical interconnects.\nHands-on experience assembling, testing, and troubleshooting cables, connectors, feedthroughs, and electronic hardware.\nExperience performing vacuum, thermal cycling, cryogenic, and electrical qualification testing.\nFamiliarity with manufacturing processes applicable to cable and connector assemblies, including soldering, crimping, brazing, and related joining techniques.\nUnderstanding of Geometric Dimensioning & Tolerancing per ASME Y14.5.\nPsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum does not unlawfully discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, or any other basis protected by applicable laws.\nNote: PsiQuantum will only reach out to you using an official PsiQuantum email address and will never ask you for bank account information as part of the interview process. Please report any suspicious activity  .\nWe are not accepting unsolicited resumes from employment agencies.\nBase pay is one part of the total compensation package. Full-time roles are eligible for equity and benefits. Our compensation ranges reflect the cost of labor across multiple U.S. geographic markets, and we pay based on defined geographic zones. This position may be filled within one of the following U.S. geographic zones, each with its own salary range.\nActual compensation may vary outside of these ranges and is dependent on various factors including, but not limited to, a candidate's qualifications, relevant education and training, competencies, experience, geographic location, business needs, and internal equity. Your recruiter can share more details about the salary range applicable to your location during the hiring process. \nZone 1 - Bay Area and NYC \nZone 2 - Examples include Los Angeles and Washington DC \nZone 3 - Examples include Austin, Chicago, and Sacramento \nZone 4 - Examples include Nashville and Phoenix/Tempe and many remote locations \nThis position includes the following benefits: competitive health coverage for you and your dependents, 401(k) with company match, equity grants, access to financial wellness tools and planning resources, wellness benefits, family support programs, life and disability insurance, paid leave programs, company-designated paid holidays, discretionary time off (DTO), and an end-of-year company shutdown. Some of these benefits have eligibility requirements and may vary based on location, role, or employment status. Many of these benefits are subsidized or fully paid for by the company. \nThe estimated annual base salary range for this role is: \nZone 1\n$126,600—$148,700 USD\nZone 2\n$113,900—$133,800 USD\nZone 3\n$101,300—$119,000 USD\nZone 4\n$88,600—$104,100 USD","description_format":"text","description_chars":11505,"description_truncated":false,"requirements":{"experience_years_min":3,"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":["Manufacturing"],"lifecycle":[{"event":"open","at":"2026-10-02T01:11:49Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 23","filings_12m":23,"filings_prev_12m":15,"green_card_filings_12m":0,"median_offered_wage_usd":157500,"route":null,"cap_exempt":false,"checked_at":"2026-10-03T21:08:04+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":5}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":4,"expected_fill_days":114,"reasons":["conf:0","velocity","win:early"],"computed_at":"2026-10-06T05:45:30Z"},"pay":{"stated_usd_annual":148700,"is_top_pay":false},"html_url":"https://alion.io/job/psiquantum-cryogenic-electrical-interconnect-engineer","json_url":"https://alion.io/job/psiquantum-cryogenic-electrical-interconnect-engineer.json","meta":{"generated_at":"2026-10-06T22:00:33Z","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","counted_by":"address","units_charged":1,"used_today":2055,"day_limit":5000,"remaining_today":2945,"minute_limit":60,"resets_at":"2026-10-07T00:00:00Z"}},"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":1616},"rest":"https://alion.io/mcp/rest/get_company?id=1616"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpsiquantum-cryogenic-electrical-interconnect-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%2Fpsiquantum-cryogenic-electrical-interconnect-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%2Fpsiquantum-cryogenic-electrical-interconnect-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/psiquantum-cryogenic-electrical-interconnect-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpsiquantum-cryogenic-electrical-interconnect-engineer"}]}