{"id":2100305,"url":"https://alion.io/job/mutt-data-ai-backend-engineer-2","title":"#9 AI Backend Engineer Senior","company":{"id":19043,"name":"Mutt Data","domain":"muttdata.ai","url":"https://alion.io/company/mutt-data","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":81,"open_postings":13,"ghost_share":0,"stale_share":0.769,"repost_share":0,"time_to_fill_p50_days":36,"computed_at":"2026-10-09T06:01:00Z"}},"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":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":49000,"max_usd":122000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":1757},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Databricks","optional":false},{"name":"FastAPI","optional":false},{"name":"LangChain","optional":false},{"name":"Langfuse","optional":false},{"name":"LangGraph","optional":false},{"name":"LiteLLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Machine Learning","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"GCP","optional":true},{"name":"Kubernetes","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-08T17:54:46Z","employer_posted_date":"2026-10-08","last_verified_at":"2026-10-09T23:28:14Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Join Our Remote Data Products & Machine Learning Startup!\nAt Muttdata, we build innovative Data Products and Machine Learning solutions that help companies solve complex business challenges. As a fast-growing, remote-first startup, we're passionate about technology, collaboration, and continuous learning.\nWe are looking for an AI Backend Engineer Senior to join our team and work within the AI Platform team of a large-scale organization.\nThis team builds the platform other teams use to create AI agents: SDKs, backend services, MCP servers, and a unified inference layer. Your users are other developers, so part of the job is supporting them through adoption.\nThis role requires strong Python backend skills, hands-on experience building and running agents in production, and a product mindset for internal platforms. Ownership, clear communication, and the ability to support and enable other engineers are essential to succeed in this fast-paced, collaborative environment. Hybrid work model.\nWhat We Do\nLeveraging our expertise, we build modern Machine Learning systems for demand planning and budget forecasting.\nDeveloping scalable data infrastructures, we enhance high-level decision-making, tailored to each client.\nOffering comprehensive Data Engineering and custom AI solutions, we optimize cloud-based systems.\nUsing Generative AI, we help e-commerce platforms and retailers create higher-quality ads, faster.\nBuilding deep learning models, we enhance visual recognition and automation for various industries, improving product categorization, quality control, and information retrieval.\nDeveloping recommendation models, we personalize user experiences in e-commerce, streaming, and digital platforms, driving engagement and conversions.\nOur Partnerships\nAmazon Web Services\nAstronomer\nDatabricks\nOur Values\n We are Data Nerds\n We are Open Team Players\n We Take Ownership\n We Have a Positive Mindset\nCurious about what we’re up to? Check out our case studies and dive into our blog post to learn more about our culture and the exciting projects we’re working on!\nResponsibilities\nDesign and develop backend services and agents using LangChain and LangGraph.\nManage the agent lifecycle, from development and deployment to observability, monitoring, and continuous improvement.\nBuild and maintain cross-team SDKs.\nDevelop, publish, and secure MCP servers, including their authentication.\nUnify agent inference through LiteLLM or a similar proxy.\nImplement guardrails, PII masking, and Agent Skills.\nBuild and optimize RAG pipelines, vector databases, and context management.\nSupport the teams that consume the platform, helping them adopt it and unblocking them along the way.\nRequired Skills\n5+ years of backend development experience and 2+ years working with agentic AI.\nStrong command of Python and FastAPI (or similar frameworks).\nExperience with LangChain, LangGraph, and modern agent-building stacks.\nSolid knowledge of MCP across its full lifecycle (development, publishing, and authentication).\nExperience with LiteLLM or similar proxies.\nExperience with vector databases, RAG, and context optimization.\nKnowledge of guardrails, PII masking, and Agent Skills.\nExperience building and maintaining SDKs.\nEase supporting other developers.\nStack: Python, FastAPI, LangChain, LangGraph, Langfuse, MCP, LiteLLM.\n\nNice to have\nTypeScript.\nKubernetes.\nAWS.\nPerks\nRemote-first cultur e - work from anywhere!\n In-Company English Lessons.\nWellhub or sports club stipend to stay active\nAWS, DBT, Google Cloud, Azure & Databricks certifications fully covered\nFood credits via Pedidos Ya - because great work deserves great food.\n Birthday off + an extra vacation week (Mutt Week! )\nReferral bonuses - help us grow the team & get rewarded!\nAnnual Mutters' Trip - an unforgettable getaway with the team!\n Monthly Childcare Reimbursement - Because supporting families matters too","description_format":"text","description_chars":3886,"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":["Continuous learning","Hybrid work"],"hiring_locations":[{"name":"Argentina","iso":"AR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["AI Consulting & Integration","Analytics & BI Consulting","Data Engineering & Migration Services"],"lifecycle":[{"event":"open","at":"2026-10-08T18:06:00Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":0,"expected_fill_days":36,"reasons":["conf:2","stale_co","velocity","win:early"],"computed_at":"2026-10-09T06:01:00Z"},"pay":null,"html_url":"https://alion.io/job/mutt-data-ai-backend-engineer-2","json_url":"https://alion.io/job/mutt-data-ai-backend-engineer-2.json","meta":{"generated_at":"2026-10-10T02:04:10Z","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","counted_by":"address","units_charged":1,"used_today":3651,"day_limit":5000,"remaining_today":1349,"minute_limit":60,"resets_at":"2026-10-11T00:00:00Z"}},"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":19043},"rest":"https://alion.io/mcp/rest/get_company?id=19043"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmutt-data-ai-backend-engineer-2"},{"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%2Fmutt-data-ai-backend-engineer-2"},{"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%2Fmutt-data-ai-backend-engineer-2"},{"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/mutt-data-ai-backend-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmutt-data-ai-backend-engineer-2"}]}