{"id":21613,"url":"https://alion.io/job/hexa-ai-applied-researcher","title":"AI Applied Researcher","company":{"id":6140,"name":"HEXA","domain":"myhexa.com","url":"https://alion.io/company/hexa","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":91,"open_postings":21,"ghost_share":0,"stale_share":0.143,"repost_share":0,"time_to_fill_p50_days":77,"computed_at":"2026-10-23T05:54:15Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":58000,"max_usd":124000,"period":"year","method":"role_country_seniority_unknown","sample_n":114},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Fine-tuning","optional":false},{"name":"Multimodal AI","optional":false},{"name":"Pre-training","optional":false},{"name":"Self-Supervised Learning","optional":false},{"name":"Time Series","optional":false}],"status":"live","first_seen_at":"2026-06-05T13:00:26Z","employer_posted_date":"2026-08-24","last_verified_at":"2026-10-23T17:08:37Z","board_verified":true,"closed_at":null,"days_open":140,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":139},"description":"Full-time · On-site (Paris Marseille)\nThe sea is the physical layer of the economy-the conduit for our energy, communications, and trade. It is also Europe’s exposed flank. Pelagon is building the answer.\nFounded by Aymeric (serial deeptech entrepreneur; founded & exited Scortex, Leading AI solution for manufacturing quality) and Gauthier (Navy officer and McKinsey), Pelagon is building a foundational multimodal acoustic model for autonomous maritime protection (underwater and surface) in service of European sovereignty. It will be deployed on a distributed, autonomous network of vectors (UUVs, buoys, sailbuoys, seabed…) to provide real-time understanding of underwater threats.\nFrance and Europe have world-class acoustic engineers and a long history in underwater warfare. By bridging this expertise with modern physical-AI strategies (as seen in autonomous driving and robotics). Europe is still missing it’s naval NeoPrime, Pelagon aims to become to lead the way in autonomous marine protection-from detection to interception-partnering with leading navies, primes, and neo-primes, while also operating its own fleet as a service.\nPelagon is backed by Hexa, the pioneer startup studio in Europe, which has launched 35+ companies, including unicorns like Front, Aircall, and Spendesk, combining €230m+ ARR and €750m raised.\nWhy this matters\nThe sea is the physical layer of the economy - and Europe's most exposed flank. Submarines, drones and threats move through it unseen because the ocean is opaque by default. Pelagon exists to change that: to give Europe a real-time, sovereign understanding of what moves beneath the surface, from detection to interception.\nAt the core of that mission is a maritime foundational perception model - Pelagon's equivalent of the perception stack that made autonomous driving possible, but for the underwater domain. As an AI Engineer, you own the models at the heart of it, from research to deployment on a distributed, autonomous fleet of UUVs, buoys, sailbuoys and seabed sensors.\nWhat you'll do\nDesign, train and ship state-of-the-art multimodal and acoustic models for underwater detection, classification and localization.\n\nBuild the training pipeline end to end: self-supervised pre-training on large unlabeled acoustic corpora, then fine-tuning for specific threats.\n\nFuse acoustic, kinematic and other sensor modalities into a single representation that holds up in low-SNR, real-world conditions.\n\nShape Pelagon's data strategy - how we capture, curate and compound proprietary data from our own fleet into a durable advantage.\n\nDistill and optimize models to run on the edge: compute- and power-constrained hardware aboard autonomous vectors at sea.\n\nClose the loop with sea trials - turn field data and failure cases into the next iteration.\n\nWhat we look for\nStrong track record training models deployed in production, ideally on audio, signal, time-series or other non-image modalities.\n\nA physical-AI mindset: you've worked where models meet messy sensor data and real hardware, not just clean benchmarks.\n\nInstinct for data strategy - you treat the data flywheel as a core part of the model, not an afterthought.\n\nConfortable across the ML stack: data, architecture, training, evaluation and deployment. Bias for shipping; you measure success by what works at sea.\n\nBonus: background in signal processing, or experience in defense, maritime, robotics or autonomous driving.\n\nWhy join now\nFounding ownership. You'll be one of the first engineers and will define the technical foundation of the company. Meaningful equity comes with that.\n\nA mission with weight. This is hardware that protects critical infrastructure and Europe's maritime space.\n\nReal things, in the real ocean, fast. You'll see your work in the water within weeks, not years.\n\nAI-first, at the edge, in the real world. We train our own models and run them where it counts: in the water, on the device. You'll be solving the edge-ML and power problems most companies only talk about.\n\nA sovereign, European deeptech at the inflection point of a market with strong NATO and EU policy momentum behind it.","description_format":"text","description_chars":4132,"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":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Venture Capital","Angel Networks & Startup Accelerators"],"lifecycle":[{"event":"open","at":"2026-06-05T13:00:26Z"}],"visa":[],"liveness":{"score":15,"band":"cold","label":"Long shot","p_open":1,"p_active":0.404,"p_room":0.36,"age_days":139,"expected_fill_days":77,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-10-23T05:54:15Z"},"pay":null,"html_url":"https://alion.io/job/hexa-ai-applied-researcher","json_url":"https://alion.io/job/hexa-ai-applied-researcher.json","meta":{"generated_at":"2026-10-23T17:27:52Z","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":26547,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"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":6140},"rest":"https://alion.io/mcp/rest/get_company?id=6140"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fhexa-ai-applied-researcher"},{"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%2Fhexa-ai-applied-researcher"},{"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%2Fhexa-ai-applied-researcher"},{"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/hexa-ai-applied-researcher\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fhexa-ai-applied-researcher"}]}