{"id":731070,"url":"https://alion.io/job/nexos-principal-ai-engineer","title":"Principal AI Engineer","company":{"id":678801,"name":"Nexos","domain":"nexos.ai","url":"https://alion.io/company/nexos-3","size_band":"201-500","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":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Vilnius, Lithuania","Kaunas, Lithuania"],"countries":["LT"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":6600,"max":null,"currency":"EUR","period":"month","gross":true,"usd_annual":90924},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Context Engineering","optional":false},{"name":"Embeddings","optional":false},{"name":"LLM","optional":false},{"name":"Kubernetes","optional":true},{"name":"NLP","optional":true}],"status":"live","first_seen_at":"2026-07-20T08:43:05Z","employer_posted_date":"2026-07-20","last_verified_at":"2026-09-29T14:26:36Z","board_verified":true,"closed_at":null,"days_open":71,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":71},"description":"Own the AI revolution. We're building an all-in-one AI platform to help teams do their best work and automate every routine task you can think of. We're looking for someone who operates at the highest technical level - equally at home prototyping a new idea on Monday and shaping our AI roadmap on Friday. If you want to do serious work and have real influence over where it goes, this is the role.\nMain Responsibilities\nShape the AI/ML technical direction - contribute to research strategy, validate POCs hands-on, and bring the architectural perspective that influences how we build\n\nBe the GenAI authority - stay ahead of the field, decide what's signal versus noise, and bring the team with you\n\nLead hands-on exploration of new concepts, frameworks, and tooling - context management, memory, retrieval, agentic loop, A2A and beyond - from experimentation all the way to production\n\nBe a core part of product development - from discovery with PMs to delivery within cross-functional teams, operating as both a doer and a thought leader in the same sprint\n\nOwn the LLM evaluation framework (proprietary and OSS) - set the criteria, run the assessments, make the call on performance, cost, and reliability\n\nAct as AI evangelist internally and externally - at this level, spreading serious AI thinking is part of the job, not a bonus\n\nCore Requirements\nProven track record of driving AI/ML initiatives end-to-end in production - you've owned the outcome, not just the ticket\n\nExpert ability to design, execute, and scale production-grade AI systems - and the hands-on instinct to still get in and build\n\nDeep command of AI developer frameworks and tooling - with the judgment to make the right call, not just the popular one\n\nExpert understanding of large language models, embeddings, multimodality, and AI architectures - including where they break\n\nAdvanced expertise in context engineering and deployed evaluations - you raise the bar for how the team thinks about this\n\nStrong ownership and accountability - you can plan your own work, influence the team's direction, and still ship\n\nA builder's instinct: moves fast when it matters, rigorous when it counts\n\nSolid software engineering fundamentals, microservice architectures, and experience taking POCs through to production\n\nBonus Points For\nArchitect-level experience designing and shipping complex Agentic systems at scale\n\nDeep expertise in data science methodologies, ML algorithms, and NLP - the fundamentals, not just the wrappers\n\nExperience in backend engineering, API design, scalable systems, and Kubernetes\n\nTrack record of owning features end-to-end and working fluidly across engineering, product, sales, and marketing\n\nSalary Ranges\nGross salary from 6600 EUR/Month (final compensation depends on exact experience)\n\nWhat We Offer\nProfessional growth. Internal and external events, online training, conferences, books - everything you need to reach your full potential.\n\nHealth benefits. Private health insurance, online & on-site workouts (LT) / online workouts & sports access card (PL), consultations - to feel and be your best.\n\nTeam spirit. Team buildings and parties with games, shows, tastings, food coupons, gifts - and it's on us.\n\nMore free time. Stay with us and additional vacation days will be added to your calendar.\n\nAdditional paid leave. Additional days are covered by us in cases of illness or special occasions.\n\nFlexibility. Flexible working time arrangement.","description_format":"text","description_chars":3450,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Health insurance"],"hiring_locations":[{"name":"Lithuania","iso":"LT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["LLM & Generative AI","AI Development Tools"],"lifecycle":[{"event":"open","at":"2026-09-11T09:44:22Z"}],"liveness":{"score":21,"band":"cold","label":"Long shot","p_open":1,"p_active":0.592,"p_room":0.36,"age_days":70,"expected_fill_days":39,"reasons":["conf:0","velocity","win:tail","crowd:"],"computed_at":"2026-09-29T05:45:00Z"},"pay":{"stated_usd_annual":90924,"is_top_pay":false},"html_url":"https://alion.io/job/nexos-principal-ai-engineer","json_url":"https://alion.io/job/nexos-principal-ai-engineer.json","meta":{"generated_at":"2026-09-30T01:11:08Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":711,"day_limit":5000,"remaining_today":4289,"minute_limit":60,"resets_at":"2026-10-01T00:00:00Z"}}}