Fastino · 10 hours ago
Research Engineer - Large Language Models
United States
Full-time
Remote
Senior LevelFastino is on a mission to develop specialized, efficient AI, with a team comprised of alumni from leading tech companies and universities. The role focuses on experimenting with language model architectures, optimizing multimodal models, and implementing advanced reinforcement learning techniques to enhance model performance.
Artificial Intelligence (AI)Software
Hiring Manager
George Hurn-Maloney
Responsibilities
Experiment with novel language model architectures, helping drive and execute Fastino's research roadmap
Optimize Fastino’s multimodal models to improve response quality, instruction adherence, and overall performance metrics
Architect data processing pipelines, implementing filtering, balancing, and captioning systems to ensure training data quality across diverse content categories
Implement reinforcement learning techniques including Direct Preference Optimization and Generalized Reward Preference Optimization to align model outputs with human preferences and quality standards
Build robust and real-world motivated evaluations
Partner with Fastino engineering team to ship model updates directly to customers
Establish best practices for code health and documentation on the team, to facilitate collaboration and reliable development
Qualification
Required
Advanced degree (Master's or PhD) in Computer Science, Artificial Intelligence, Machine Learning, or related technical discipline with concentrated study in deep learning and computer vision methodologies
Demonstrated ability to do independent research in Academic or Industry settings
Substantial industry experience in large-scale deep learning model training, with demonstrated expertise in at least one of Large Language Models, Vision-Language Models, Diffusion Models, or comparable generative AI architectures
Comprehensive technical proficiency and practical experience with leading deep learning frameworks, including advanced competency in one of PyTorch, JAX, TensorFlow, or equivalent platforms for model development and optimization
Company
Fastino
Fastino enable developers everywhere to do more with AI.
Founded in 2024
11-50 employees
H1B Sponsorship
Fastino has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
Funding
Current Stage
Early StageTotal Funding
$24.5MKey Investors
Dropbox VenturesKhosla Ventures
2025-07-03Seed
2025-05-07Seed· $17.5M
2024-11-12Pre Seed· $7M
Leadership Team
Ash Lewis
CEO & co-founder
George Maloney
Co-Founder & COO
Company data provided by crunchbase