Senior Machine Learning Engineer
HUGAbout the role
🚀 Hiring: Senior Machine Learning Engineer - LLMs & Agentic AI - $175K - $300K Salary
We’re working with an exciting AI company building the next generation of intelligent, agentic AI systems, and we’re looking for a strong Machine Learning Engineer to join the team.
This is a highly technical role for someone who wants to work directly on LLMs, model post-training, evaluation and agentic systems - with the opportunity to have a significant impact on how these models perform in real-world applications.
🧠 What you’ll be working on
- Developing and improving large language models and AI systems
- Model post-training, fine-tuning and evaluation
- Building robust evaluation frameworks and methodologies
- Working on agentic AI systems and improving their reliability and capabilities
- Designing data and training pipelines to improve model performance
- Experimenting with new approaches to model behaviour, reasoning and performance
- Collaborating closely with research and engineering teams to take ideas from experimentation into production
🔎 What we’re looking for
- Strong experience in Machine Learning / AI Engineering
- Hands-on experience working with LLMs / foundation models
- Experience with model training, fine-tuning or post-training
- Strong understanding of model evaluation and experimentation
- Experience building or working with AI agents / agentic systems is highly desirable
- Excellent Python skills
- Strong software engineering and systems fundamentals
- Ability to work in a fast-moving, highly technical environment
We’re particularly interested in engineers coming from frontier AI labs, high-growth AI companies or teams working deeply on LLMs and agents.
🌟 Why join?
💡 Work on genuinely cutting-edge AI problems
🤖 Direct exposure to LLMs and agentic systems
🧪 Significant scope for experimentation and technical ownership
🚀 High-impact role within a fast-growing AI company
💰 Highly competitive compensation + excellent benefits
📈 Strong opportunity for career growth and technical leadership
📍 Location: New York / US
💼 Level: Senior Machine Learning Engineer
💵 Salary: $175K - $300K + Equity
If you're an ML engineer working deeply on LLMs, agents, post-training or evaluation and are interested in hearing more, Apply today or dm me.
Responsibilities
- Developing and improving large language models and AI systems
- Model post-training, fine-tuning and evaluation
- Building robust evaluation frameworks and methodologies
- Working on agentic AI systems and improving their reliability and capabilities
- Designing data and training pipelines to improve model performance
- Experimenting with new approaches to model behaviour, reasoning and performance
- Collaborating closely with research and engineering teams to take ideas from experimentation into production
Qualifications
- Strong experience in Machine Learning / AI Engineering
- Hands-on experience working with LLMs / foundation models
- Experience with model training, fine-tuning or post-training
- Strong understanding of model evaluation and experimentation
- Experience building or working with AI agents / agentic systems is highly desirable
- Excellent Python skills
- Strong software engineering and systems fundamentals
- Ability to work in a fast-moving, highly technical environment
Benefits
- Highly competitive compensation + excellent benefits
- Significant scope for experimentation and technical ownership
- Strong opportunity for career growth and technical leadership
Skills mentioned
About HUG
At HUG, we believe recruitment should feel personal - because the best teams are built on real connections. We are a specialist Technology and Finance Tech recruitment consultancy, placing exceptional talent in Engineering, Product, GTM, Leadership, and buy-side and sell-side finance roles. From early-stage AI and fintech startups to high-growth scale-ups and established enterprises across the UK, Europe, and US, we help ambitious companies hire the people who move the needle. What makes us different is true partnership and care. We take the time to understand the unique challenges and ambitions of our clients, offering practical insights on talent availability, compensation trends, and candidate perceptions of your brand. We’re not here for quick fixes - we’re here to help you hire smarter, faster, and more sustainably. Candidates matter just as much. We guide every person with transparency, respect, and support - from first conversation to long after they’ve started. We’ve partnered with some of the biggest names in tech and finance, delivering exceptional results in high-growth and challenging markets. Ready to build something lasting? 📩 hello@hugrecruitment.com | hugrecruitment.com