{"id":782001,"url":"https://alion.io/job/epsilon-asi-senior-engineer-langchain","title":"Senior Engineer (Langchain)","company":{"id":449782,"name":"Epsilon ASI","domain":"epsilonasi.com","url":"https://alion.io/company/epsilon-asi","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Denver, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":130000,"max_usd":250000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1268},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"Function Calling","optional":false},{"name":"GCP","optional":false},{"name":"LangChain","optional":false},{"name":"LLM","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Anthropic","optional":true},{"name":"CI/CD","optional":true},{"name":"Docker","optional":true},{"name":"Embeddings","optional":true},{"name":"Gemini","optional":true},{"name":"Kubernetes","optional":true},{"name":"LangGraph","optional":true},{"name":"Machine Learning","optional":true},{"name":"OpenAI","optional":true},{"name":"Semantic Search","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-09-02T21:33:14Z","employer_posted_date":"2026-09-02","last_verified_at":"2026-10-21T14:40:27Z","board_verified":true,"closed_at":null,"days_open":48,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":48},"description":"Senior LangChain Engineer\nRemote | Contract-to-Hire\nAbout the Role\nWe are looking for a mid-to-senior level LangChain Engineer to join a growing AI engineering team building production-grade applications powered by large language models (LLMs).\nIn this role, you’ll work closely with engineers and technical stakeholders to design, develop, and optimize AI-powered applications and agentic workflows. The ideal candidate has strong Python experience, hands-on experience with LangChain or similar LLM frameworks, and experience deploying applications in a major cloud environment.\nThis is an excellent opportunity for an engineer who enjoys working at the intersection of software engineering, AI, and emerging LLM technologies and wants to have a meaningful impact on a growing team.\nWhat You'll Do\nDesign and develop production-grade AI/LLM applications using LangChain and related frameworks\n\nBuild and integrate LLM-powered workflows, agents, and applications\n\nDevelop scalable backend services and APIs using Python\n\nIntegrate LLMs with external data sources, APIs, tools, and enterprise systems\n\nDevelop solutions involving prompt engineering, retrieval-augmented generation (RAG), tool calling, and AI agents\n\nDeploy and maintain AI applications within a major cloud environment\n\nCollaborate with engineers, product stakeholders, and clients to translate business requirements into technical solutions\n\nEvaluate emerging AI/LLM technologies and identify opportunities to improve existing solutions\n\nWrite clean, maintainable, well-tested code suitable for production environments\n\nTroubleshoot, optimize, and improve the performance, reliability, and scalability of AI applications\n\nWhat We're Looking For\nMid-to-senior level software engineering experience\n\nStrong proficiency in Python\n\nHands-on experience with LangChain or comparable LLM/AI application frameworks\n\nExperience working with at least one major cloud platform:\nAWS\n\nGoogle Cloud Platform (GCP)\n\nMicrosoft Azure\n\nStrong understanding of software engineering fundamentals, APIs, and application development\n\nExperience building or integrating LLM-powered applications\n\nAbility to work independently in a remote environment while collaborating effectively with a distributed team\n\nNice to Have\nExperience with LangGraph\n\nExperience building AI agents or agentic workflows\n\nExperience with RAG, vector databases, embeddings, and semantic search\n\nFamiliarity with OpenAI, Anthropic, Gemini, or other foundation models\n\nExperience with Docker and/or Kubernetes\n\nExperience with CI/CD and production cloud deployments\n\nTypeScript experience\n\nExperience working in a consulting or client-facing environment\n\nEducation\nA Bachelor's degree is not required if the candidate has strong relevant experience. Master's or PhD graduates with relevant hands-on experience in AI, machine learning, computer science, or a related field are encouraged to apply.\nThis role is not intended for candidates coming directly from an undergraduate program without professional or substantial project experience.","description_format":"text","description_chars":3058,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Consulting & Digital Transformation","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-09-12T00:57:29Z"}],"visa":[],"liveness":{"score":25,"band":"fade","label":"Fading","p_open":1,"p_active":0.559,"p_room":0.45,"age_days":48,"expected_fill_days":27,"reasons":["conf:1","win:tail"],"computed_at":"2026-10-21T05:46:15Z"},"pay":null,"html_url":"https://alion.io/job/epsilon-asi-senior-engineer-langchain","json_url":"https://alion.io/job/epsilon-asi-senior-engineer-langchain.json","meta":{"generated_at":"2026-10-21T16:55:25Z","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":23850,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-22T00:00:00Z"}},"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":449782},"rest":"https://alion.io/mcp/rest/get_company?id=449782"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fepsilon-asi-senior-engineer-langchain"},{"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%2Fepsilon-asi-senior-engineer-langchain"},{"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%2Fepsilon-asi-senior-engineer-langchain"},{"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/epsilon-asi-senior-engineer-langchain\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fepsilon-asi-senior-engineer-langchain"}]}