{"id":7668,"date":"2026-09-04T10:27:33","date_gmt":"2026-09-04T10:27:33","guid":{"rendered":"https:\/\/itdsportugal.com\/it-jobs\/senior-ai-engineer-large-language-model-applications\/"},"modified":"2026-09-04T10:27:33","modified_gmt":"2026-09-04T10:27:33","slug":"senior-ai-engineer-large-language-model-systems","status":"publish","type":"matador-job-listings","link":"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-ai-engineer-large-language-model-systems\/","title":{"rendered":"Senior AI Engineer \u2013 Large Language Model Systems"},"content":{"rendered":"<p><strong>Unleash the Future of AI \u2014 Build Scalable, Ground-breaking Large Language Model Systems!<\/strong><\/p> <p><strong>Porto-based opportunity with a fully remote work model.<\/strong><\/p> <p>As 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\u2014ranging from AI decisioning logic to multi-step conversational agents\u2014pushing the boundaries of what\u2019s possible with large language models. Join us to shape the future of AI technology and accelerate your career in cutting-edge innovation.<\/p> <p><strong>Your main responsibilities:<\/strong><\/p> <ul> <li>Design and implement scalable, reliable AI systems with a focus on latency, cost, and operational efficiency.<\/li> <li>Develop complex language model architectures, including RAG, tool-calling, and multi-agent orchestration.<\/li> <li>Build evaluation frameworks to measure model quality, detect regressions, and monitor drift in production environments.<\/li> <li>Integrate AI\/ML models into core business logic, ensuring safety, compliance, and robustness in decision-critical contexts.<\/li> <li>Engineer solutions for hallucination mitigation and safe-failure in regulated applications.<\/li> <li>Collaborate with cross-functional teams to review designs, mentor engineers, and promote best practices in AI engineering.<\/li> <li>Evaluate build-vs-buy options across LLM providers and third-party AI tools to optimize performance and cost.<\/li> <li>Ensure observability, guardrails, and caching are in place for AI decisioning pipelines.<\/li> <\/ul> <p><strong>You&#8217;re ideal for this role if you have:<\/strong><\/p> <ul> <li>5+ years of software engineering experience, including 2+ years working with production Large Language Models (LLMs).<\/li> <li>Deep expertise in LLM application architecture: retrieval-augmented generation (RAG), multi-agent orchestration, model routing, and fallback strategies.<\/li> <li>Proven track record of deploying scalable AI systems with a focus on latency, reliability, and cost management.<\/li> <li>Strong system design skills with experience in guardrails, caching, and observability for AI pipelines.<\/li> <li>Practical knowledge of hallucination mitigation and designing safe AI solutions in regulated environments.<\/li> <li>Advanced proficiency with AI-assisted engineering tools and best practices.<\/li> <li>Ability to assess build-vs-buy tradeoffs among AI providers and third-party tools.<\/li> <li>Experience mentoring AI engineers and reviewing technical designs and code.<\/li> <\/ul> <p><strong>Nice-to-have:<\/strong><\/p> <ul> <li>Certifications or experience in AI safety and compliance.<\/li> <li>Additional knowledge of AI evaluation harnesses and drift detection tools.<\/li> <\/ul> <p><strong>Language required for the role:<\/strong><\/p> <ul> <li>Fluent English, with excellent communication skills.<\/li> <\/ul> <p><strong>Eligibility to work in Europe:<\/strong><\/p> <ul> <li>Only candidates with an existing legal right to work in the European Union will be considered for this role.<\/li> <\/ul> <p>#MAKEYourCareerBETTER<\/p> <p>Interested? 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.<\/p> <nav class=\"matador-job-navigation\"> <ul> <li> <a href=\"https:\/\/itdsportugal.com\/en\/?wpid=7668&#038;bhid=9993\" rel=\"button\" class=\"matador-button\" title=\"Apply Now\">Apply Now<\/a> <\/li> <li> <a href=\"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-ai-engineer-large-language-model-systems\/\" rel=\"button\" class=\"matador-button matador-button-secondary\" title=\"More Info\">More Info<\/a> <\/li> <\/ul> <\/nav> ","protected":false},"excerpt":{"rendered":"<p>Unleash the Future of AI \u2014 Build Scalable, Ground-breaking Large Language Model Systems! Porto-based opportunity with a fully remote work model. As 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 &hellip; <a href=\"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-ai-engineer-large-language-model-systems\/\">Continued<\/a><\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_matador_source_id":"9993"},"matador-categories":[],"matador-locations":[],"matador-types":[14],"matador-remote-job-possible":[289],"matador-published-category":[],"matador-skills":[1052],"matador-seniority":[123],"matador-position":[],"matador-technology":[682,664,893,672,660,673,666,894,786,734,656,1065],"matador-contract-type":[343],"matador-priority":[135],"matador-language":[127],"matador-place":[371,370],"matador-visibility":[657],"matador-choose-website-to-publis":[399,400],"class_list":["post-7668","matador-job-listings","type-matador-job-listings","status-publish","hentry","matador-types-contract","matador-remote-job-possible-remote","matador-skills-ai-engineer","matador-seniority-senior","matador-technology-aws","matador-technology-c","matador-technology-django","matador-technology-docker","matador-technology-java","matador-technology-jenkins","matador-technology-python","matador-technology-react","matador-technology-servicenow","matador-technology-spring-boot","matador-technology-sql","matador-technology-tableau","matador-contract-type-b2b","matador-priority-0-urgent","matador-language-english","matador-place-porto","matador-place-portugal","matador-visibility-online","matador-choose-website-to-publis-poland","matador-choose-website-to-publis-portugal"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Senior AI Engineer \u2013 Large Language Model Systems - ITDS PORTUGAL<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-ai-engineer-large-language-model-systems\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Senior AI Engineer \u2013 Large Language Model Systems - ITDS PORTUGAL\" \/>\n<meta property=\"og:description\" content=\"Unleash the Future of AI \u2014 Build Scalable, Ground-breaking Large Language Model Systems! 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