{"id":2573027,"url":"https://alion.io/job/unity-technologies-principal-software-engineer-core-engine","title":"Principal Software Engineer, Core Engine","company":{"id":2743,"name":"Unity Technologies","domain":"unity.com","url":"https://alion.io/company/unity-technologies","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":88,"open_postings":13,"ghost_share":0,"stale_share":0.462,"repost_share":0,"time_to_fill_p50_days":32,"computed_at":"2026-10-15T05:46:00Z"}},"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":["Canonsburg, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":179500,"max":269300,"currency":"USD","period":"year","gross":true,"usd_annual":269300},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":".NET","optional":false},{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"Unity","optional":false}],"status":"live","first_seen_at":"2026-10-14T23:24:07Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-15T04:08:15Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"The opportunity\nUnity Engine is used by millions of creators around the world to build powerful and engaging real-time experiences. Underlying these experiences is game code written in C# and targeting .NET. We need people excited by the opportunity to integrate the cutting-edge .NET runtime and tooling into Unity, as well as help build the compiler technologies to generate highly efficient native code.\nWe’re looking for an experienced software engineer to guide, and be responsible for, delivery of some of the most mission-critical parts of Unity Engine. You’ll work with software experts across the company to give our developers the tools they need to make performant, robust games:\nImproving the quality of the C#/.NET integration, including GC, JIT, AOT, and runtime libraries\nCrafting, prototyping and implementing key technical solutions\nResearching and spearheading methods to improve performance and reliability\nAdvocating standard methodologies for internal developers and our users\nPlease note that we are currently prioritizing candidates in Eastern Time Zone.\nWhat you'll be doing\nEnsure the timely delivery and fitness of our C#/.NET integration, including JIT and AOT toolchains\nDrive general game engine technical leadership across Unity and help craft a long-term vision and technical roadmap for the team\nDesign, track, and communicate important metrics to guide resourcing decisions\nCommunicate the team’s plans internally and externally to technical and non-technical audiences\nProvide feedback and solutions to users through documentation, forums, bug reports, and internal support channels\nGuide the development and effectiveness of team members\nAdvocate best practices for internal developers and Unity users\nWhat we're looking for\nDeep expertise in C# and C++\nCompiler domain expertise, with strong knowledge of compiler toolchain technology\nStrong understanding of hardware architecture\nGame engine development experience, particularly on proprietary engines\nExcellent verbal and written communication skills with the ability to build relationships with global stakeholders\nYou might also have\nExperience developing cross-platform code, particularly between ARM and x64\nExperience working with remote/international teams\nPrior use of Unity\nBase Salary Range: We determine the base salary range for this role based on your primary work location:\nZone A: $179,500 - $269,300 USD gross\nZone B: $202,800 - $304,200 USD gross\nZone C: $227,900 - $341,900 USD gross\nThis range reflects the anticipated base salary for this position. Beyond base salary, this role may be eligible for equity awards and participation in our company incentive plans (such as annual discretionary bonuses or sales commissions). The final offer amount will depend on several factors, including geographic location and the candidate’s relevant experience, professional background, and skill set.\nBenefits\nAt Unity, we want our team members to thrive. We offer a wide range of benefits designed to support well-being and work-life balance.\nPlease note: Benefits eligibility, specific offerings, and coverage vary based on the country and employment status.\nWhile specific benefits vary, here are some of the ways we strive to take care of our eligible team members globally: Comprehensive health, life, and disability insurance | Commute subsidy | Employee stock ownership | Competitive retirement/pension plans | Generous vacation and personal days | Support for new parents through leave and family-care programs | Office food snacks | Mental Health and Wellbeing programs and support | Employee Resource Groups | Global Employee Assistance Program | Training and development programs | Volunteering and donation matching program\nLife at Unity\nUnity [NYSE: U] is the world’s leading game engine, powering play for more than 3 billion consumers each month. The top mobile games in the world, the most played PC indie titles, the most innovative console games, and virtually all of the top XR and Web Games are developed, deployed, and grown in Unity. Unity also enables teams across industries like automotive, manufacturing, and healthcare to design, simulate, and collaborate in 3D - closing the gap between ideas and reality. For more information, please visit www.unity.com.\nUnity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrate our employees across age, race, color, ancestry, national origin, religion, disability, sex, gender identity or expression, sexual orientation, or any other protected status in accordance with applicable law. Our differences are strengths that enable us to support the growing and evolving needs of our customers, partners, and collaborators. If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience, please fill out this form to let us know.\nThis position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.\nThis posting is intended to fill an existing vacancy, and we are committed to providing applicants with updates throughout the hiring process in accordance with applicable law.\nHeadhunters and recruitment agencies may not submit resumes/CVs through this website or directly to managers. Unity does not accept unsolicited headhunter and agency resumes. Unity will not pay fees to any third-party agency or company that does not have a signed agreement with Unity.\nYour privacy is important to us. Please take a moment to review ourProspect and Applicant Privacy Policies. Should you have any concerns about your privacy, please contact us at .","description_format":"text","description_chars":5943,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":["Equity","Generous vacation","Retirement plans"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Advertising","AR & VR Software","Game Development","Developer Tools"],"lifecycle":[{"event":"open","at":"2026-10-14T23:24:07Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":0,"expected_fill_days":32,"reasons":["conf:1","velocity","win:early","comp:brand"],"computed_at":"2026-10-15T05:46:00Z"},"pay":{"stated_usd_annual":269300,"is_top_pay":true},"html_url":"https://alion.io/job/unity-technologies-principal-software-engineer-core-engine","json_url":"https://alion.io/job/unity-technologies-principal-software-engineer-core-engine.json","meta":{"generated_at":"2026-10-15T21:18:12Z","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":32351,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":2743},"rest":"https://alion.io/mcp/rest/get_company?id=2743"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Funity-technologies-principal-software-engineer-core-engine"},{"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%2Funity-technologies-principal-software-engineer-core-engine"},{"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%2Funity-technologies-principal-software-engineer-core-engine"},{"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/unity-technologies-principal-software-engineer-core-engine\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Funity-technologies-principal-software-engineer-core-engine"}]}