{"id":350574,"url":"https://alion.io/job/alcon-principal-software-engineer-medical-device-softwarec-net-windows","title":"Principal Software Engineer (Medical Device Software/C#/C++, .NET, Windows)","company":{"id":5809,"name":"Alcon","domain":"alcon.com","url":"https://alion.io/company/alcon","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":89,"open_postings":58,"ghost_share":0.017,"stale_share":0.397,"repost_share":0.017,"time_to_fill_p50_days":28,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Lake Forest, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":128350,"max":166100,"currency":"USD","period":"year","gross":null,"usd_annual":166100},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"MVVM","optional":false},{"name":"Windows","optional":false},{"name":"DICOM","optional":true},{"name":"FHIR","optional":true},{"name":"Git","optional":true},{"name":"HL7","optional":true},{"name":"TCP/IP","optional":true}],"status":"live","first_seen_at":"2026-07-30T00:00:00Z","employer_posted_date":"2026-10-08","last_verified_at":"2026-10-24T01:17:55Z","board_verified":false,"closed_at":null,"days_open":88,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":88},"description":"At Alcon, we are driven by the meaningful work we do to help people see brilliantly. We innovate boldly, champion progress, and act with speed as the global leader in eye care. Here, you’ll be recognized for your commitment and contributions and see your career like never before. Together, we go above and beyond to make an impact on the lives of our patients and customers.\nWe foster an inclusive culture and are looking for diverse, talented people to join our team. As a Principal Software Engineer, you will serve as a technical leader responsible for architecting, designing, and developing complex Windows-based software applications that support Alcon's next-generation ophthalmic diagnostic and surgical medical devices.\nIn this highly visible role, you will drive software architecture, and influence engineering best practices across multiple product development programs leveraging technologies including C#, .NET, WPF/XAML, MVVM, C, and C++. You will lead the development of scalable, high-performance software solutions while partnering closely with systems engineering, hardware, quality, regulatory, and product management to deliver innovative products that meet demanding performance, cybersecurity, reliability, interoperability, and regulatory requirements.\nThis onsite opportunity in Lake Forest, California offers the chance to shape the future of ophthalmic technology by leading the development of next-generation diagnostic and surgical platforms. As a key technical leader, you will influence product strategy, drive innovation across multiple programs, mentor engineering teams, and collaborate with multidisciplinary partners to deliver technologies that improve patient outcomes and help people see brilliantly.\nIn this role, a typical day will include:\nLead the architecture, design, and development of Windows-based software for ophthalmic medical devices.\nDrive technical strategy and architectural decisions across multiple product development initiatives.\nCollaborate with cross-functional teams, including Systems Engineering, Quality, Regulatory, Hardware, and Product Management.\nMentor engineers and champion software development best practices, quality, and innovation.\nGuide all phases of the software development lifecycle, from requirements through verification and release.\nEvaluate and implement technologies and processes that improve product performance, reliability, and scalability.\nServe as a technical leader, influencing engineering direction and supporting key business objectives.\nWHAT YOU’LL BRING TO ALCON:\nBachelor’s Degree or Equivalent years of directly related experience (or high school +13 yrs; Assoc.+9 yrs; M.S.+2 yrs; PhD+0 yrs)\nThe ability to fluently read, write, understand and communicate in English.\n5 Years of Relevant Experience\nSponsorship/Relocation: Not available.\nThis position can be offered at Principal, Software Engineer or Senior Software Engineer, depending on the candidate’s experience and qualification.\nPREFERRED EXPERIENCE:\nEducational background in Computer Science, Software Engineering, Computer Engineering, or a related technical discipline.\nExperience developing Windows-based software applications using C#, .NET, WPF /XAML, MVVM, C, C++, and Microsoft technology stacks.\nStrong understanding of software architecture, object-oriented design principles, design patterns, inter-process communication (IPC), and scalable software development practices.\nExperience with hardware-software integration, system-level debugging, and troubleshooting of complex electromechanical systems.\nDemonstratedhands-on experience using oscilloscopes, multimeters, logic analyzers, or other diagnostic and measurement equipment to troubleshoot, analyze, and validate system performance and signal integrity.\nAbility to read, interpret, and use schematic diagrams, interface specifications, and technical documentation to support root cause analysis and product development.\nExperience working in FDA-regulated medical device environments or other highly regulated industries.\nKnowledge of multi-threading, inter-process communication, TCP/IP networking, automated testing methodologies, source control (Git), and software verification practices.\nFamiliarity with healthcare interoperability technologies and standards such as HL7, FHIR, DICOM, Protocol Buffers, medical imaging, image processing, signal processing, algorithm development, and advanced healthcare technologies.\nExperience with ophthalmic technologies, medical imaging, image processing, signal processing, algorithm development, geometric computations or other advanced healthcare technologies.\nDemonstrated capability to drive innovation and collaborate effectively with cross-functional teams, including Engineering, Quality, Regulatory, and Product Management.\nExcellent written and verbal communication skills.\nThis role is based on site in Lake Forest, CA and requires regular in-person collaboration with cross-functional teams and work within laboratories and development environments.\nHOW YOU CAN THRIVE:\nCollaborate with teammates to share standard processes and findings as work evolves.\nSee your career like never before with focused growth and development opportunities.\nJoin Alcon’s mission to provide outstanding, innovative products and solutions to improve sight, improve lives, and grow your career!\nAlcon provides a robust benefits package including health, life, retirement, flexible time off and much more.\nAlcon Careers\nSee your impact at alcon.com/careers\nATTENTION: Current Alcon Employee/Contingent Worker\nIf you are currently an active employee/contingent worker at Alcon, please click the appropriate link below to apply on the Internal Career site.\nFind Jobs for Employees\nFind Jobs for Contingent Worker\nCompensation and Benefits\nAlcon’s Total Rewards programs are designed to align incentives with business objectives, support our values, and deliver long-term value. Our compensation approach includes a combination of fixed and variable pay, with short-term and long-term incentive opportunities for eligible roles. Our benefits offerings are designed to support associates and their families across key life events, including programs that promote health and well-being, provide financial security, and support retirement planning.\nThe salary range posted represents the anticipated hiring range for this role. Actual compensation may vary based on factors such as experience, skills, location, and internal equity, and may fall outside the posted range.\nPay Range\n$128,350.00 - $166,100.00Pay Frequency\nAnnualAlcon is an Equal Opportunity Employer and participates in E-Verify. Alcon takes pride in maintaining a diverse environment and our policies are not to discriminate in recruitment, hiring, training, promotion or other employment practices for reasons of race, color, religion, gender, national origin, age, sexual orientation, gender identity, marital or veteran status, disability, or any other legally protected status. Alcon is also committed to working with and providing reasonable accommodation to individuals with disabilities. If, because of a medical condition or disability, you need a reasonable accommodation for any part of the application process, or in order to perform the essential functions of a position, please send an email to  and let us know the nature of your request and your contact information.","description_format":"text","description_chars":7430,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":["Equity","Flexible time off","Retirement plans"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":true,"industries":["Health & Medical Electronics","Surgical Instruments & Devices","Eyewear"],"lifecycle":[{"event":"open","at":"2026-09-05T18:54:27Z"},{"event":"close","at":"2026-09-06T18:17:21Z"},{"event":"reopen","at":"2026-09-28T22:45:53Z"},{"event":"close","at":"2026-09-30T05:15:08Z"},{"event":"reopen","at":"2026-10-01T01:43:09Z"}],"visa":[],"liveness":{"score":15,"band":"cold","label":"Long shot","p_open":0.9,"p_active":0.581,"p_room":0.28,"age_days":88,"expected_fill_days":28,"reasons":["conf:52","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-26T05:57:25Z"},"pay":{"stated_usd_annual":166100,"is_top_pay":false},"html_url":"https://alion.io/job/alcon-principal-software-engineer-medical-device-softwarec-net-windows","json_url":"https://alion.io/job/alcon-principal-software-engineer-medical-device-softwarec-net-windows.json","meta":{"generated_at":"2026-10-26T06:04:11Z","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":8155,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-27T00:00:00Z"}},"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":5809},"rest":"https://alion.io/mcp/rest/get_company?id=5809"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Falcon-principal-software-engineer-medical-device-softwarec-net-windows"},{"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%2Falcon-principal-software-engineer-medical-device-softwarec-net-windows"},{"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%2Falcon-principal-software-engineer-medical-device-softwarec-net-windows"},{"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/alcon-principal-software-engineer-medical-device-softwarec-net-windows\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Falcon-principal-software-engineer-medical-device-softwarec-net-windows"}]}