{"id":1523681,"url":"https://alion.io/job/simpson-thacher-bartlett-llp-senior-software-engineer","title":"Senior Software Engineer","company":{"id":1842699,"name":"Simpson Thacher & Bartlett LLP","domain":"stblaw.com","url":"https://alion.io/company/stblaw","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":78,"open_postings":20,"ghost_share":0,"stale_share":0.9,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-08T05:49:30Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":180000,"max":210000,"currency":"USD","period":"year","gross":null,"usd_annual":210000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"Bicep","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"GitHub Actions","optional":false},{"name":"JavaScript","optional":false},{"name":"LLM","optional":false},{"name":"Node JS","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"React.js","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-09-30T13:16:14Z","employer_posted_date":"2026-09-30","last_verified_at":"2026-10-08T23:37:22Z","board_verified":true,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"The Senior Software Engineer will be a core member of the engineering team within the Knowledge & Innovation (K&I) department, responsible for designing, building, and operating the software systems that power the Firm's legal technology and AI initiatives. This role combines strong full-stack development skills with a focus on infrastructure, reliability, and the foundational systems that enable the team to ship and maintain production-grade tools at scale.\nThis role will work across the full stack - building custom applications for attorneys and Professional Staff, establishing the engineering infrastructure that the team relies on (CI/CD, deployment pipelines, observability), and contributing to the design and implementation of AI-powered solutions. The Senior Software Engineer will collaborate closely with the Director of Engineering, data scientists, knowledge management professionals, and practice solutions teams to deliver tools that make a measurable difference in how the Firm operates.\nThis is a hands-on, high-autonomy role on a small team where every engineer has significant ownership over the systems they build.\nJOB DUTIES & RESPONSIBILITIES:\nSoftware Development & Architecture\nDesign, develop, and maintain custom software solutions supporting Knowledge & Innovation initiatives, including AI-powered tools, internal platforms, and integrations with existing Firm systems.\n\nContribute to architectural decisions in partnership with the Director of Engineering, bringing practical perspective on tradeoffs between speed, reliability, and maintainability.\n\nBuild and extend integrations across SaaS platforms, internal systems, data sources, and AI/LLM services used in legal workflows.\n\nDevelop frontend experiences that are polished, consistent, and designed with care - including establishing and maintaining component libraries and design system foundations as the team's product surface grows.\n\nInfrastructure, Reliability & Observability\nOwn and evolve the team's engineering infrastructure: CI/CD pipelines, deployment automation, infrastructure-as-code, and development environment tooling.\n\nEstablish observability practices - monitoring, logging, alerting - so the team has confidence in the health and behavior of production systems.\n\nPartner with IT to navigate the Firm's infrastructure environment, coordinating on security protocols, cloud resources, and deployment targets.\n\nEnsure systems are reliable, secure, and aligned with Firmwide technology standards.\n\nAI & Legal Technology Solutions\nContribute to the development of AI-powered tools - including retrieval-augmented systems, document analysis platforms, search tools, and workflow automation - working alongside product, data scientists, and the broader K&I team.\n\nHelp translate complex legal and business requirements into practical, well-engineered software, collaborating with attorneys, knowledge management professionals, and practice solutions managers.\n\nSupport adoption and iteration by interfacing directly with legal staff as needed - demoing tools, gathering feedback, and helping users get value from what the team builds.\n\nCollaboration & Craft\nEvaluate and prototype new tools, frameworks, and approaches that could improve how the team builds - bring experiments that work to the rest of the team.\n\nHelp establish the engineering culture of a new function - contribute to decisions about how the team works, not just what it builds.\n\nEDUCATION:\nBachelor's degree in Computer Science or related working experience.\n\nSKILLS & EXPERIENCE:\nRequired\n7+ years of experience in software engineering, with demonstrated progression in scope and responsibility.\n\nStrong full-stack skills across JavaScript/TypeScript, React, Node.js, and Python.\n\nExperience with cloud infrastructure (AWS and/or Azure), infrastructure-as-code (Terraform/Bicep), and CI/CD pipelines (GitHub Actions or equivalent).\n\nPractical experience with AI/LLM integration in production systems, or strong aptitude and interest in developing it.\n\nExperience with agentic coding tools (e.g., Claude Code, Cursor, Codex).\n\nComfort working directly with non-technical stakeholders - able to demo work, gather feedback, and explain technical decisions clearly.\n\nPreferred\nExperience in legal technology, professional services, or other highly regulated environments.\n\nExperience establishing observability and monitoring practices (logging, alerting, dashboards) for production systems.\n\nFamiliarity with design systems, component libraries, or frontend architecture patterns at the systems level.\n\nExperience integrating and extending enterprise SaaS platforms.\n\nKey Competencies\nStrong engineering judgment - knows when to build and what not to build.\n\nComfort with ambiguity - can make progress with incomplete information and adjust as context develops.\n\nPragmatic craftsmanship - cares about the quality and polish of what ships, without over-engineering.\n\nCuriosity and initiative - brings ideas, experiments, and improvements without being asked.\n\nClear communication with both technical and non-technical audiences.\n\nSalary Information\nNY Only: The estimated base salary range for this position is $180,000 to $210,000 at the time of posting.\nThe actual salary offered will depend on a variety of factors, including without limitation, the qualifications of the individual applicant for the position, years of relevant experience, level of education attained, certifications or other professional licenses held, and if applicable, the location in which the applicant lives and/or from which they will be performing the job. This role is exempt meaning it is not overtime pay eligible.\nSimpson Thacher will not sponsor applicants for work visas for this position.\nPrivacy Notice\nFor information about how Simpson Thacher & Bartlett LLP collects and processes your personal information, please refer to our Privacy Notice available at https://www.stblaw.com/other/privacy-notice.\nSimpson Thacher & Bartlett is committed to a collegial work environment in which all individuals are treated with respect and dignity. The Firm prohibits discrimination or harassment based upon race, color, religion, gender, gender identity or expression, age, national origin, citizenship status, disability, marital or partnership status, sexual orientation, veteran’s status or any other legally protected status. This Policy pertains to every aspect of an individual’s relationship with the Firm, including but not limited to recruitment, hiring, compensation, benefits, training and development, promotion, transfer, discipline, termination, and all other privileges, terms and conditions of employment.\n#LI-Remote","description_format":"text","description_chars":6682,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Financial Services","Professional Services"],"lifecycle":[{"event":"open","at":"2026-09-30T13:16:14Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 82 · green card filings: 5","filings_12m":82,"filings_prev_12m":71,"green_card_filings_12m":5,"median_offered_wage_usd":268822,"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)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":1}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":7,"expected_fill_days":40,"reasons":["conf:3","stale_co","velocity","win:early"],"computed_at":"2026-10-08T05:49:30Z"},"pay":{"stated_usd_annual":210000,"is_top_pay":true},"html_url":"https://alion.io/job/simpson-thacher-bartlett-llp-senior-software-engineer","json_url":"https://alion.io/job/simpson-thacher-bartlett-llp-senior-software-engineer.json","meta":{"generated_at":"2026-10-09T00:53:59Z","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":"assistant","counted_by":"address","units_charged":1,"used_today":151,"day_limit":2000,"remaining_today":1849,"minute_limit":60,"resets_at":"2026-10-10T00:00:00Z"}},"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":1842699},"rest":"https://alion.io/mcp/rest/get_company?id=1842699"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsimpson-thacher-bartlett-llp-senior-software-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%2Fsimpson-thacher-bartlett-llp-senior-software-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%2Fsimpson-thacher-bartlett-llp-senior-software-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/simpson-thacher-bartlett-llp-senior-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsimpson-thacher-bartlett-llp-senior-software-engineer"}]}