{"id":1311187,"url":"https://alion.io/job/handshake-senior-software-engineer-coding-2","title":"Senior Software Engineer, Coding","company":{"id":5000,"name":"Handshake","domain":"joinhandshake.com","url":"https://alion.io/company/handshake","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":89,"open_postings":9,"ghost_share":0,"stale_share":0.444,"repost_share":0,"time_to_fill_p50_days":50,"computed_at":"2026-10-01T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","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":208000,"max":260000,"currency":"USD","period":"year","gross":null,"usd_annual":260000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Go","optional":false},{"name":"JavaScript","optional":false},{"name":"Post-training","optional":false},{"name":"Python","optional":false},{"name":"Scale AI","optional":false},{"name":"TypeScript","optional":false},{"name":"CI/CD","optional":true},{"name":"GitHub","optional":true},{"name":"LLM","optional":true}],"status":"live","first_seen_at":"2026-09-26T16:23:18Z","employer_posted_date":"2026-09-26","last_verified_at":"2026-10-01T08:43:09Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"About Handshake\nHandshake was founded on a simple belief that everyone deserves a path to a great career, regardless of where they went to school or who they know. Today, we power 25 million job seekers, 1 million+ employers, and 1,600 educational institutions.\nIn 2025, we started Handshake AI and built the fastest-growing AI data business in history. We work directly with frontier AI lab researchers to create evaluations, publish benchmarks, and push the boundary of data. We’ve grown from $0 to ~$1B run rate and pay ~$60M to over 30K individuals every month.\nWhy join Handshake now:\nShape how every career evolves in the AI economy, at global scale, with impact your friends, family and peers can see and feel\n\nPartner hand-in-hand with world-class AI labs, Fortune 500 partners and the world’s top educational institutions\n\nWork together with engineers, scientists, operators, and more from Palantir, Meta, Scale AI, and former YC founders\n\nBuild a massive, fast-growing business with billions in revenue\n\nAbout Handshake AI\nHuman data is the core infrastructure to AI advancement. Frontier AI labs currently improve model capabilities with various data-intensive post-training techniques. We believe that data spend for AI training will increase by 3-5x in the next few years and continue for much longer as models take on new domains. Handshake AI supports all of the frontier AI labs, working on their most complex data at the largest scale.\nAbout the Role\nWe’re looking for a Senior Software Engineer to help build the systems that power high-quality coding data and evaluations for next-generation AI models.\nYou’ll work on technically complex projects involving software engineering benchmarks, code review evaluation, agentic coding workflows, and developer-facing tools. You’ll combine strong engineering judgment with hands-on execution, designing reliable systems that enable teams to create, validate, and improve sophisticated coding datasets.\nThis is an opportunity to shape foundational infrastructure at the intersection of software development and AI. You’ll operate with significant ownership, collaborate closely with engineers and technical program leaders, and help establish the standards and tools that support our fastest-growing AI initiatives.\nWhat You'll Do\nDesign, build, and operate scalable software systems for coding evaluation, data generation, and agentic development workflows.\n\nDevelop tools and services that analyze, validate, and improve AI-generated code.\n\nBuild reliable pipelines for code execution, testing, benchmarking, and quality measurement.\n\nPartner with engineering, research, operations, and customer-facing teams to translate complex requirements into practical systems.\n\nDrive technical decisions across architecture, APIs, data models, observability, and operational excellence.\n\nImprove engineering velocity through reusable frameworks, automation, and developer tooling.\n\nLead projects from ambiguous problem definition through design, implementation, launch, and iteration.\n\nMentor engineers through design reviews, code reviews, and day-to-day collaboration.\n\nEstablish high standards for maintainability, correctness, security, and reliability.\n\nDesired Capabilities\n5+ years of professional software engineering experience.\n\nStrong proficiency in Python, JavaScript/TypeScript, Go, or another modern programming language.\n\nExperience designing and operating production systems with meaningful scale, reliability, and performance requirements.\n\nStrong understanding of software engineering fundamentals, including testing, APIs, data structures, distributed systems, and observability.\n\nExperience building developer tools, infrastructure, data pipelines, evaluation systems, or other technically complex products.\n\nAbility to work effectively in ambiguous environments and break large problems into clear, executable plans.\n\nExcellent written and verbal communication skills, with the ability to explain technical tradeoffs to both technical and non-technical partners.\n\nA track record of taking ownership and delivering high-quality results in collaboration with\n\nBonus Points\nExperience with AI/ML evaluation, coding agents, LLM applications, or developer productivity tools.\n\nFamiliarity with code execution sandboxes, GitHub workflows, CI/CD systems, or benchmark infrastructure.\n\nExperience working with containerization, cloud platforms, databases, and distributed job orchestration.\n\nContributions to open-source software or a demonstrated passion for improving developer tools.\n\nExperience partnering with research teams or customers to deliver technically rigorous solutions.\n\nPerks\nHandshake delivers benefits that help you feel supported-and thrive at work and in life.\nThe below benefits are for full-time US employees.\nOwnership: Equity in a fast-growing company\nFinancial Wellness: 401(k) match, competitive compensation, financial coaching\nFamily Support: Paid parental leave, fertility benefits, parental coaching\nWellbeing: Medical, dental, and vision, mental health support, wellness stipend\nGrowth: Learning stipend, ongoing development\nRemote & Office: Internet, commuting, and free lunch/gym in our SF office\nTime Off: Flexible PTO, 15 holidays + 2 flex days\nConnection: Team outings & referral bonuses\nExplore our mission, values, and comprehensive US benefits at joinhandshake.com/careers.","description_format":"text","description_chars":5379,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence"],"lifecycle":[{"event":"open","at":"2026-09-26T16:25:15Z"}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":4,"expected_fill_days":50,"reasons":["conf:4","velocity","win:early"],"computed_at":"2026-10-01T05:45:00Z"},"pay":{"stated_usd_annual":260000,"is_top_pay":true},"html_url":"https://alion.io/job/handshake-senior-software-engineer-coding-2","json_url":"https://alion.io/job/handshake-senior-software-engineer-coding-2.json","meta":{"generated_at":"2026-10-01T10:21:26Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"search","counted_by":"address","units_charged":0,"used_today":0,"day_limit":null,"remaining_today":null,"minute_limit":null,"resets_at":"2026-10-02T00:00:00Z"}}}