{"id":2159391,"url":"https://alion.io/job/itds-senior-ai-engineer-large-language-model-systems","title":"Senior AI Engineer – Large Language Model Systems","company":{"id":4374591,"name":"ITDS Portugal","domain":"itdsportugal.com","url":"https://alion.io/company/itds-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"contractor","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_city","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Porto, Portugal"],"countries":["PT"],"hiring_countries":["PT"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":35000,"max_usd":73000,"period":"year","method":"role_seniority_country_cell","sample_n":20},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Function Calling","optional":false},{"name":"Hallucination","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Multi-Agent Systems","optional":false},{"name":"RAG","optional":false},{"name":"LLM Evaluation","optional":true}],"status":"closed","first_seen_at":"2026-09-17T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-10-21T13:02:10Z","board_verified":false,"closed_at":"2026-10-21T13:02:10Z","days_open":34,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":34},"description":"Unleash the Future of AI — Build Scalable, Ground-breaking Large Language Model Systems!\nPorto-based opportunity with a fully remote work model.\nAs a Senior AI Engineer, you will be working for our client, a global leader in AI innovation dedicated to transforming industries through advanced language models and intelligent automation. You will own the architecture and end-to-end delivery of complex, production-grade AI systems—ranging from AI decisioning logic to multi-step conversational agents—pushing the boundaries of what’s possible with large language models. Join us to shape the future of AI technology and accelerate your career in cutting-edge innovation.\nYour main responsibilities:\nDesign and implement scalable, reliable AI systems with a focus on latency, cost, and operational efficiency.\nDevelop complex language model architectures, including RAG, tool-calling, and multi-agent orchestration.\nBuild evaluation frameworks to measure model quality, detect regressions, and monitor drift in production environments.\nIntegrate AI/ML models into core business logic, ensuring safety, compliance, and robustness in decision-critical contexts.\nEngineer solutions for hallucination mitigation and safe-failure in regulated applications.\nCollaborate with cross-functional teams to review designs, mentor engineers, and promote best practices in AI engineering.\nEvaluate build-vs-buy options across LLM providers and third-party AI tools to optimize performance and cost.\nEnsure observability, guardrails, and caching are in place for AI decisioning pipelines.\nYou're ideal for this role if you have:\n5+ years of software engineering experience, including 2+ years working with production Large Language Models (LLMs).\nDeep expertise in LLM application architecture: retrieval-augmented generation (RAG), multi-agent orchestration, model routing, and fallback strategies.\nProven track record of deploying scalable AI systems with a focus on latency, reliability, and cost management.\nStrong system design skills with experience in guardrails, caching, and observability for AI pipelines.\nPractical knowledge of hallucination mitigation and designing safe AI solutions in regulated environments.\nAdvanced proficiency with AI-assisted engineering tools and best practices.\nAbility to assess build-vs-buy tradeoffs among AI providers and third-party tools.\nExperience mentoring AI engineers and reviewing technical designs and code.\nNice-to-have:\nCertifications or experience in AI safety and compliance.\nAdditional knowledge of AI evaluation harnesses and drift detection tools.\nLanguage required for the role:\nFluent English, with excellent communication skills.\nEligibility to work in Europe:\nOnly candidates with an existing legal right to work in the European Union will be considered for this role.\n#MAKEYourCareerBETTER\nInterested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.\n\nhttps://itdsportugal.com/en/it-jobs/9993/?utm_source=itjobs","description_format":"text","description_chars":3062,"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":[],"hiring_locations":[{"name":"Portugal","iso":"PT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Consumer Goods","Cybersecurity"],"lifecycle":[{"event":"open","at":"2026-10-09T07:30:12Z"},{"event":"close","at":"2026-10-21T13:02:10Z"}],"visa":[],"liveness":null,"pay":null,"html_url":"https://alion.io/job/itds-senior-ai-engineer-large-language-model-systems","json_url":"https://alion.io/job/itds-senior-ai-engineer-large-language-model-systems.json","meta":{"generated_at":"2026-10-22T11:50:54Z","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":9958,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"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":4374591},"rest":"https://alion.io/mcp/rest/get_company?id=4374591"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fitds-senior-ai-engineer-large-language-model-systems"},{"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%2Fitds-senior-ai-engineer-large-language-model-systems"},{"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%2Fitds-senior-ai-engineer-large-language-model-systems"},{"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/itds-senior-ai-engineer-large-language-model-systems\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fitds-senior-ai-engineer-large-language-model-systems"}]}