Company Name: EverAI

Job Details: 8 Locations In-Office or Remote Mid level

Job Url: https://builtin.com/job/senior-llm-engineer/6636758

Job Description: Our Vision & Products🚀 EverAI — Building the Future of AI CompanionshipOne of the Top 15 Largest & Fastest-Growing AI Companies in the World30+ Million Users in under 2 years — Help Us Reach 100M first, 500M nextAt EverAI, we’re shaping what it means to connect with AI. With 30+ million users and counting, we're not just building products — we're creating entirely new categories.Our flagship product is the world’s largest AI girlfriend/boyfriend platform, redefining relationships for millions. It is governed by our proprietary moderation system, EverGuard — an internal AI designed to ensure everything we build is safe, ethical, and human-first.And we’re only just getting started!Our TeamWe are an enthusiastic, passionate and hardworking team of 70 people. Our founding team has strong entrepreneurial experience building and scaling web products from 0 to IPO.Alexis Soulopoulos [CEO]• 10+ years in Tech Executive Leadership• Co-Founder Mad Paws Holdings (from 0 to IPO)• Forbes 30 under 30 + Deloitte TechFast50 ’22 & ‘23Michael Monin [Co-founder & CTO]• 10+ years as CTO / COO (web2/web3), 1+ year in AI/LLM• Serial-entrepreneur: MTK Digital (exited / 0->$20m revenue) and Zipchat (AI Chatbot for E-commerce brands)Thomas Lacroix [Co-founder & CMO]• 8+ years in Customer Acquisition & E-commerce Growth• Serial-entrepreneur: Curatible (sold to Blackstone) and MTK Digital (exited / 0->$20m revenue)Maruša Fasano [CFO/Legal]• 25+ years in Finance, Strategy, M&A• Ex-CFO/M&A @Curatible (exited to Blackstone)• Ex-President of the Board @SotremoSA (exited)• Co-founder/CFO @SoftOne (exited)Your Role🚀 Architect the Future of AI RelationshipsAs our LLM Engineer, you'll fine-tune and optimize large language models that power conversations for over 30 million users, processing more than 5 million messages daily. You'll be at the forefront of developing AI companionship technology that scales globally while maintaining personalized and meaningful interactions.Key ResponsibilitiesInteract with stakeholders (Co-founders, Web Engineers, DevOps Engineers) to bring your project to lifeImprove our AI moderation systems to identify and filter inappropriate content, including implementing classifiers for detecting sensitive topicsOversee the creation and optimization of algorithms for LLM behavior adjustments based on user interactions, focusing on fine-tuning and prompt engineeringDevelop strategies for multi-AI interactions within group chats, ensuring robust and scalable solutionsAdaptation and fine-tuning of base models for multilingual supportManage the creation and maintenance of diverse datasets critical for training and improving the performance of LLMsAssess and decide on the best technological approaches, choosing between classifiers, fine-tuning, and other methods based on specific project needs.Your QualificationsHard Skills5+ years of experience in machine learning, neural networks, and dataset managementAdvanced degree in Computer Science, Artificial Intelligence, Machine Learning, or related fieldsProven experience in AI projects, particularly in NLP and LLMsAbility to work with cross-functional teams to translate complex requirements into actionable plansProficient in programming languages relevant to AI development, such as Python, Pytorch, and familiarity with AI development tools and frameworks.Soft Skills🗣 Strong communication & collaborative skills (perfectly fluent in English)🎯 Goal-oriented, ownership and commitment⚡️ Doer mindset - we are moving fast and we need people who can find the right balance between executing, planning and strategy🧢 Humble - willing to learn, open to feedback🍭 #NSFW - you are comfortable building products that are based on uncensored models and contentWhy EverAI?📈 Exponential Growth: From 30M+ users in 18 months, to 100M next — and 500M beyond🚀 Track Record of Category-Creating Innovation: We consistently launch world-first AI applications — setting the pace, not following it🌍 Global Impact: Top-tier user growth, real-world adoption, and cultural relevance🧠 Proven Leadership: A senior team that’s launched, scaled, and exited & IPO’d multiple scale ups — now fully focused on reshaping AI companionship👥 Elite Remote Team: 100% remote and built to win — world-class talent from Tier 1 tech companies, with a culture of ownership, velocity, and radical creativity🛡️ Ethical Core: Our AI ecosystem is governed by EverGuard, our proprietary AI moderation technology, ensuring responsible development at scaleWhat We Offer✍️ We prefer a B2B contract but we can be flexible, as long as you’re in it for the long haul📍 Full-remote (you work from the place that suits you best)🏝️ 4 weeks PTO👨‍👩‍👧‍👦 Annual gathering to get to know each other better❤️‍🩹 Health & Wellness support: Up to $200 for your wellbeing expenses + Access to unlimited 1:1 sessions with psychologists and lifestyle experts through OpenUp (also available to up to three of your family members)📚 Learning budget💻 Company laptop⚡️ GPT-4, Mistral and Hugging Face Pro plan🎯 Top Tier Talent Is Our MultiplierWe’re a fully remote group of A-players from Tier 1 tech, led by an exec team who’ve launched, scaled, and exited multiple companies. We move fast, and care deeply about what we build — and who we build it with.We’re looking for exceptional talent ready to ship & distribute world-first AI products at scale, fast, and co-create with us this category-defining business.If that’s you — reach out and apply!