{"id":1636930,"url":"https://alion.io/job/viridien-senior-machine-learning-engineer","title":"Senior Machine Learning Engineer","company":{"id":3854033,"name":"Viridien","domain":"viridien.com","url":"https://alion.io/company/viridien","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":75,"open_postings":9,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-05T05:45:15Z"}},"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":["Massy, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":66000,"max_usd":126000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":20},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"C++","optional":false},{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"Fine-tuning","optional":false},{"name":"Function Calling","optional":false},{"name":"Gemini","optional":false},{"name":"Java","optional":false},{"name":"LLM","optional":false},{"name":"Machine Learning","optional":false},{"name":"NLP","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"Post-training","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"PyTorch C++","optional":false},{"name":"RAG","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"TensorFlow","optional":false},{"name":"TensorFlow C++","optional":false},{"name":"VLM","optional":false},{"name":"Windsurf","optional":false}],"status":"live","first_seen_at":"2026-10-01T21:39:22Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-05T23:58:56Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Viridien (www.viridiengroup.com) is an advanced technology, digital and Earth data company that pushes the boundaries of science for a more prosperous and sustainable future. With our ingenuity, drive and deep curiosity we discover new insights, innovations, and solutions that efficiently and responsibly resolve complex natural resource, digital, energy transition and infrastructure challenges.\nJob Summary\nWe’re seeking a versatile Senior Machine Learning Engineer with strong data engineering instincts and a passion for production-grade AI systems. You'll play a pivotal role across the AI development lifecycle - from data ingestion to deployment - ensuring our models are reliable, reproducible, and impactful.\nAbout the Team\nYou’ll be joining a dynamic, globally AI team driving the application of Large Language Models (LLMs) and agentic workflows into our digital solutions. Our mission is to translate the latest advancements in AI into real business impact.\nKey Responsibilities\nLLM/NLP Model DevelopmentDeploy and fine tune LLMs models for domain-specific tasks.\nBuild evaluation infrastructure and benchmarking pipelines to compare model performance across multiple datasets and tasks.\nApply reinforcement learning, knowledge representation, and automated decision-making to solve complex problems end-to-end.\n\nData InfrastructureCollaborate with Data Scientist to build and own data pipelines for ingestion, transformation, versioning, and labelling.\nEnsure robust, reproducible data loops to power iterative development.\n\n AI Workflow Design & OrchestrationOrchestrate multiple models to deliver SOTA results.\nPartner with Production team, Software Engineers to bring AI solutions into real-world products.\nArchitect and orchestrate multi-model agentic workflows (function calling, tool usage, RAG, and code interpreters) and integrate them into production systems\n\nLeadershipProvide technical leadership and mentorship to junior engineers, fostering a culture of continuous learning and innovation.\n\nQualifications:\nRequired:\nMaster’s or Ph.D in Computer Science, Mathematics, Physics, Electrical Engineering, or other related technical disciplines.\nStrong programming skills within one or more of these development languages - C / C++ / R / Java / Python\nAdvanced understanding of LLM and VLM architecture, post-training methods (fine-tuning, RL), and evaluation pipelines\nExperience in data and system engineering for large-scale model workflows\nProven experience with deep learning frameworks and usage of DL libraries (TensorFlow/PyTorch)\nFluent with at least one of the following tools: Cursor, Windsurf, Trae, Gemini CLI, Claude Code, or Codex (or similar)\nExperience in applying, fine-tune, optimize and deploy LLMs to industrial-level real user case is a plus\nPassion and aptitude for programming and technology\nEnthusiasm for analytical and problem-solving challenges\nStrong enterprise project experience with Machine Learning and AI\nAbility to define and manage project deadlines and balance workloads across a wide variety of projects.\nEffective communication skills to keep all stakeholders regularly informed on progress.\nEnthusiastic attitude towards learning and flexibility to adapt to new challenges or changes in direction.\nWhy work with us\nCompetitive salary commensurate with experience\nHighly attractive bonus scheme\nInitial 22 days annual leave with future increases, complemented by a flexible buying and selling holiday program\nHybrid working with two days at home, flexible working\nCompany pension with generous employer contribution\nWellbeing Unmind app - puts you in control of your mental health\nA flexible benefits platform with numerous discount schemes - gym membership, restaurants, cinema tickets, and more\nCycle purchase scheme\nFlexible Private Medical & Dental care programmes\nBank Holiday Swap - our holiday swap program allows you to change it for another day of your choice!\nRelaxed dress code policy\nOur Hiring Process\nAt Viridien, we are committed to delivering a respectful, inclusive, and transparent recruitment experience.\nDue to the high volume of applications we receive, we may not be able to provide individual feedback to every applicant. Only candidates whose qualifications closely match the role criteria will be contacted for an interview. We do, however, aim to share personalized feedback with those who progress to the first round of interviews and beyond.\nWe are also dedicated to ensuring that our hiring process accessible to all. If you require any reasonable adjustments to fully participate in the application or interview stages, please don’t hesitate to contact your recruiter directly.\nWe see things differently. Diversity fuels our innovation, we value the unique ways in which we differ, and we are committed to equal employment opportunities for all professionals.","description_format":"text","description_chars":4850,"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":["Annual leave","Continuous learning","Flexible schedule","Gym membership","Hybrid work"],"hiring_locations":[{"name":"France","iso":"FR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-01T21:39:22Z"}],"visa":[],"liveness":{"score":99,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.993,"p_room":1,"age_days":3,"expected_fill_days":40,"reasons":["conf:2","wave","velocity","win:early"],"computed_at":"2026-10-05T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/viridien-senior-machine-learning-engineer","json_url":"https://alion.io/job/viridien-senior-machine-learning-engineer.json","meta":{"generated_at":"2026-10-06T03:15:57Z","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":4796,"day_limit":5000,"remaining_today":204,"minute_limit":60,"resets_at":"2026-10-07T00:00:00Z"}},"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":3854033},"rest":"https://alion.io/mcp/rest/get_company?id=3854033"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fviridien-senior-machine-learning-engineer"},{"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%2Fviridien-senior-machine-learning-engineer"},{"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%2Fviridien-senior-machine-learning-engineer"},{"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/viridien-senior-machine-learning-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fviridien-senior-machine-learning-engineer"}]}