{"id":585019,"url":"https://alion.io/job/coworker-principal-software-engineer","title":"Principal Software Engineer","company":{"id":455306,"name":"Coworker","domain":"coworker.ai","url":"https://alion.io/company/coworker-2","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-29T05:49:05Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":220000,"max":280000,"currency":"USD","period":"year","gross":null,"usd_annual":280000},"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Python","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-08-11T20:18:01Z","employer_posted_date":"2026-08-11","last_verified_at":"2026-10-29T15:20:59Z","board_verified":true,"closed_at":null,"days_open":78,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":78},"description":"Principal Software Engineer\nAbout the job\nWe need a talented, ambitious, hard-working principal software engineer with 10+ years of experience who can help us build the foundation for the next era of work. We need someone who wants to change how the world works, one company at a time.\nYou are that person.\nYou are a deeply technical full stack software developer who ships high-quality code as the strong majority of your time, while also providing thought leadership and mentorship to the team. You are obsessed with making customers happy, and will do whatever it takes to make it happen. You are autonomous and happy to take on big, ambiguous problems at a fast-growing startup.\nYou know when to push and when to rest; you model sustainable high performance for the team. But you (like us!) are more than your code and your hard work! You love building a culture where people love to work but believe in putting people first while having a huge amount of fun while you do your job.\nYou will burn tokens like the VC money will never stop flowing.\nWhat you will do in the role\nShip code daily. Hands-on development is the strong majority of your time\n\nOwn the architecture and technical roadmap for a core domain; dive deep into the hardest problems when needed\n\nMentor senior and staff engineers; be the technical escalation point for the toughest challenges in your domain\n\nBe a thought leader in the enterprise AI space\n\nRepresent Coworker externally through talks, blog posts, or open-source contributions\n\nGuide early Coworker technical architecture decisions that will resonate throughout the global economy for years to come\n\nEstablish the Coworker engineering culture - live the mission and set a standard\n\nHelp the product team craft the team vision, strategy, and roadmap while proposing innovative solutions, as well as understanding technical limitations\n\nDrive cross-org technical initiatives with measurable business impact\n\nDrive incident response and post-mortems for company-critical issues; ensure we learn systemically from failures\n\nHire and interview for senior+ roles; raise the bar for engineering talent across the org\n\nHave an inordinate amount of fun\n\nPush the frontier of what’s possible with Enterprise AI\n\nPosition Qualifications\nBachelor's and/or master's degree (Computer Science preferred)\n\n10+ years of professional development experience\n\nExperience and desire to own new products from zero to one, from system design to implementation to deployment\n\nStrong communication and collaboration skills\n\nExperience and comfort using AI aggressively to improve velocity with looping, reinforcement\n\nAny languages are fine, we primarily use GoLang, Typescript, and Python\n\nDeep expertise in at least two of: distributed systems, data pipelines, AI/ML infrastructure, security, or frontend architecture at scale\n\nProven ability to lead without direct authority; influenced technical direction across team boundaries\n\nExperience defining SLAs, SLOs, and running production systems at scale with strong operational discipline\n\nPerks\nUnlimited paid time off\n\nMedical, dental, and vision\n\nEarly and generous employee stock option plan\n\n$100 monthly health and wellness benefit\n\n401(k) plan\n\nPaid family leave\n\nApple products for work\n\nDaily tetris matches\n\nDrop us a line!\nWe encourage you to drop us a line even if you feel over- or under-qualified. We want to find the best people to help us build Coworker no matter who they are. We have a lot of different areas of responsibility and we are always happy to brainstorm with you about what would be the best fit.\nCoworker.ai is an equal opportunity employer. We believe everyone should feel great about being their authentic selves at Coworker-this is the only way to do our best work! We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. 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