Director of AI Research - Foundation Models & LLM Pretraining
Jobrapido
Build the Models. Push the Boundaries. Shape the Future of AI. Location: Remote | United States Employment: Full-Time | Research Leadership The Opportunity We're partnering with an industry-leading AI technology company pushing the boundaries of foundation models, generative AI, and intelligent systems deployed at global scale. We're seeking an exceptional AI research leader who has personally architected, built, and pre-trained large language models (LLMs) or foundation models from scratch. This isn't about fine-tuning existing models or building applications on top of someone else's AI. It's about building the foundational intelligence itself. You'll tackle some of the most challenging problems in modern AI, influence critical architectural decisions, and help define the next generation of intelligent systems. What You'll Do Build From Scratch: Architect, develop, and pre-train large-scale language and multimodal foundation models. Push Architectural Boundaries: Advance transformer architectures, attention mechanisms, mixture-of-experts (MoE), and emerging model designs. Solve Complex Challenges: Tackle training divergence, convergence, scaling laws, and optimization across large-scale GPU clusters. Advance AI Performance: Improve training efficiency, model intelligence, generalization, and inference performance. Lead Innovation: Drive research priorities, influence technical strategy, and shape the future of production-scale generative AI systems. What You'll Bring Essential: Proven, hands-on experience pre-training large-scale LLMs or foundation models from scratch — not simply fine-tuning existing models. Deep expertise in transformers, modern deep learning, model architecture, and optimization. Strong knowledge of RoPE, GQA, MoE, attention mechanisms, and scaling laws. Experience with distributed GPU training, FSDP, DeepSpeed ZeRO, tensor parallelism, and pipeline parallelism. Hands-on experience with BF16/FP8, gradient checkpointing, training stability, and large-scale GPU infrastructure. Demonstrated ability to lead complex research initiatives and influence architectural decisions. Bonus: Multimodal foundation models, RLHF, DPO, GRPO, or significant contributions to advanced AI research. Why This Opportunity? You're not joining to build on top of existing foundation models. You're joining to help create the next generation. This is an opportunity to combine groundbreaking research, technical ownership, and real-world impact — solving problems that will shape how intelligent systems are built and deployed worldwide. If you've built foundation models from scratch and want to push the boundaries of what's possible in AI, we'd love to connect. Apply today to explore this confidential research leadership opportunity.
- ...infrastructure frontier AI labs build internally,... ...improving production models. We are building open... ...tasks like autonomous research, and the full-stack platform... ...through full pretraining runs, scaling toward 1... ...opportunity to build the foundation for the future of decentralized...FoundationRemote workVisa sponsorshipRelocation packageFlexible hours
- ...Our Mission Reflection is a research lab making intelligence open... ...and build on. We build open models that let anyone control their... ...and help shape the future of AI. Our mission: make intelligence... ...coherent whole. This is a foundational role. Reflection is building...FoundationWork at officeVisa sponsorship
- ...mission is to architect AI that learns from and... ...We're pioneering the model architectures that will... ...efficient, large-scale foundation models. Our team... ...we are looking for a Research Engineer, Data Infrastructure... ...systems that power pretraining at Cartesia. In this role...FoundationWork at officeVisa sponsorshipFlexible hours
$165k - $310k
...Senior Research Engineer, LLM Training & Post-Training New York, New York,... ...Who We Are Lightning AI is the company behind PyTorch... ...transformer-based language models to join our Research Engineering... ...supervised fine‑tuning, continued pretraining, preference optimization,...SuggestedFor contractorsFor subcontractorWork at officeRemote workWork from homeFlexible hours2 days per week- EPAM's new Frontier AI business unit... ...translating their research and post-training objectives... ...data. The Senior Director, Frontier AI... ...labs to understand model training, post-training... ...modern ML frameworks, LLM APIs, and... ...AI labs or leading foundation model companies Direct...Foundation
$270k - $340k
Principal AI Research Scientist, Research Director - AI ScalingP-1227About Databricks AIAt... ...companies to develop AI models and agents using their own... ...of large language model (LLM) training and inference efficiency... ...research team focused on foundational and applied AI problems,...FoundationLocal areaWorldwide$136.44k - $265.11k
...are rebuilding biotech for the AI era.When a breakthrough is... ...structured data, and run AI agents and models directly in their workflows.... ...ourselves. AI fluency is the foundation we build on; it's core to how... ..., scientists, and external research partners.Desire to work in a fast...FoundationWork at officeLocal areaMonday to FridayShift work- ...Research Engineer/Scientist, World Models. Our mission is to build a general-purpose AI for robots. We believe the path is to deploy robots early in real customer environments... ...learning researchers to train robot foundation models What we look for Deep...FoundationFull time
$124k - $155k
About the TeamAI Research Lab is one of DoorDash’s frontier innovation... ..., focused on building the foundation for an AI-native future across our... ...execution — connecting frontier model research, internal platform... ...experience productizing LLM/ML systems (shipping features...FoundationHourly payWork at officeLocal areaRemote workFlexible hours- ...Databricks seeks highly autonomous backend/infrastructure engineers to power enterprise-scale model inference on the Mosaic AI platform. You will build and optimize LLM infrastructure, serving OpenAI, Anthropic, Gemini and self-hosted models, tackling reliability and...Foundation
- ...The Role: As a Research Engineer - Vision & Vision-Language Models , you will be a core contributor on Zyphra’s... ...sourcing and generating data to pretraining, post-training, reinforcement learning... ...what we do and love discussing AI Benefits and Perks: Comprehensive...Work at officeRelocation package
$260k - $340k
...combining frontier agentic AI, an enterprise-grade... ...Manager for Model Infrastructure, you'll... ...partner closely with AI Research, Product Engineering, Infrastructure... ...to shape the technical foundation of Harvey's AI platform... ...AI infrastructure, LLM serving, or machine learning...Foundation$155k - $269k
...Description Waabi, founded by AI visionary Raquel Urtasun,... ...simulation. As a Research Engineer in the World Models team, you will develop algorithms... ...generative models, LLM/VLM/VLA models, and predictive... ...matching models multimodal foundation models for driving scenes...FoundationFull timeWork at officeWork from homeFlexible hours$231k - $340k
...combining frontier agentic AI, an enterprise-grade... ...Engineer on the Model Infrastructure team, you... ...partner closely with AI Research, Product Engineering, Infrastructure... ...the infrastructure foundation for future model... ...with AI infrastructure, LLM serving, or machine learning...Foundation- ...that. Atoms builds Physical AI— real-world robots for... ...Engineer focused on World Models, you will be one of the foundational technical leaders of... ...significant influence over our research direction and long term... ...spanning data, model design, pretraining, finetuning, evaluation,...Foundation
- ...Sciforium is an AI infrastructure company developing... ...multimodal AI models and a proprietary, high... ...technical and visionary Foundation Model Data Engineer to... ...Experience building massive LLM training sets from... ...mathematical benchmarks. Research Background: A Master’s...FoundationFlexible hours
$222.72k - $389.75k
...? It’s Possible.At Pinterest, AI isn't just a feature, it's a powerful... ...abilities, we’ll explore your foundational skills and how you collaborate... ...for our Ads Conversion Core Modeling team, building the state-of-... ...refactoring.Familiarity with LLM-powered productivity tools for...FoundationWork at officeLocal areaRelocationRelocation package$150k - $250k
...TypeSafe AI is an AI lab building machine-native intelligence... ...a new shape of AI: System One Models. Based in San Francisco, TypeSafe... ...been quietly rethinking the LLM stack from first principles —... ...4, we’ve been engineering the foundation for what comes after the current...FoundationWork at office- ..., we're building the human layer of AI. Our mission is to make human-AI interaction... ...We achieve this through pioneering research in multimodal AI for modeling human-to-human communication (... ...authenticity, we're creating the foundation for the next generation of AI employees...FoundationFull timeRemote workRelocation packageFlexible hours
$190k - $265k
...about enabling data and AI teams to solve the... ...data apps, AI agents, model training, model serving... ...infrastructure — with deep ties to research, product, and real-... ...generation of AI.The Foundation Model Inference team is... ...you will have:Build LLM infrastructure powering...FoundationLocal areaWorldwide- ...About AfterQuery AfterQuery is an applied research lab curating data solutions for foundation model development. We serve every frontier AI lab with the mission of delivering the... ...infrastructure. Hands-on experience with LLM fine-tuning, post-training, and evaluation...FoundationLocal area
- ...ubiquitous. We build the foundation for agent engineering... ...prototypes to production-ready AI agents that teams can... ...for an experienced research engineer to help make... ...-harness improvements, model selection, fine-tuning... ...Hands on experience with LLM-as-a-judge, automated...FoundationWork at officeFlexible hours
- ...the infrastructure frontier AI labs build internally, made available... ...improving production models. We are building open frontier... ...horizon tasks like autonomous research, and the full‑stack platform... ...Your work will shape both broad pretraining and the data used to develop...Remote workVisa sponsorshipRelocation packageFlexible hours
- ...AfterQuery AfterQuery is an applied research lab curating data solutions for foundation model development. We serve every frontier AI lab with the mission of delivering the best... ...Qualifications ~ Background in AI research, LLM evaluations, or human‑in‑the‑loop systems...FoundationLocal area
- ...Applied AI Lab Building End-To-End Software AgentsWe... ...points in the entire model pipeline. This is where... ..., and serve as the foundation that post-training builds... ...'t distinguish between research and engineering; we expect... ...familiarity with the LLM training pipeline end to...Foundation
$181k - $250k
...Machine Learning Engineer (Evals and Voice Models) Aircall is a unicorn, AI-powered customer communications... ...someone that can build out the evaluation foundation across all of these products and... ...capability evals, benchmark design, LLM-as-judge systems, failure analysis, and...FoundationContract workWorldwide$190k - $265k
...about enabling data and AI teams to solve the... ...data apps, AI agents, model training, model serving... ...infrastructure — with deep ties to research, product, and real-... ...of AI. The Foundation Model Inference team is... ...you will have: Build LLM infrastructure powering...FoundationLocal areaWorldwide- ...Techire AI in San Francisco or New York City is seeking a Senior/Staff Research Scientist to build core speech foundation models and advance the next generation of voice AI at scale. You will design SOTA architectures, develop efficient audio processing algorithms, and...Foundation
- ...Foundation seeks a founding grantmaker for its AI Model Safety program, combining deep technical fluency in frontier model evaluation and a drive to translate safety research into funded initiatives. The role involves sourcing, evaluating, and distributing resources...Foundation
- ...emerging trillion-dollar Voice AI economy, providing real-time... ...Box. Deepgram’s voice-native foundation models are accessed through cloud... ...-to-speech, and increasingly LLM- and multimodal-powered systems... ...and we partner closely with Research to turn model expectations into...Foundation
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