The posting
Senior ML Engineer
TechTree acts as the recruitment agency for this opportunity.
Location: London, United Kingdom Working arrangement: On-site London preferred; remote with monthly office visits accepted Employment: Full-time Level: Mid-Senior Level
About the Client
Hypercritical.ai is a venture-backed AI/ML startup in West London developing a novel foundation model for fully automated, unsupervised software delivery in embedded control systems.
Candidate Requirements
- Expertise designing, architecting and implementing large-scale foundation models.
- Significant hands-on experience optimising and debugging deep learning models.
- Practical experience with distributed or large-scale training and inference.
- Deep understanding of a major deep learning framework, ideally PyTorch.
- Experience building and operating ML systems on cloud platforms.
- Passion and determination, with the ability to work through complex, ambiguous problems.
- Delivery focus and respect for timelines and commitments.
- Openness to disagreement.
What you will do: - Lead the research, development, and production deployment of Hypercritical's foundation model. - Define the long-term technical strategy for high-performance Machine Learning systems. - Optimize the model for peak performance across diverse hardware and ensure scalability for exponential user growth. - Serve as the technical guardian for the model's quality and Service Level Objectives (SLOs). - Provide a hands-on solution architecture for the core ML infrastructure. - Select, evaluate, and implement state-of-the-art technologies (e.g., distributed training, specialized hardware, efficient serving frameworks). - Profile and optimize the end-to-end ML stack: data pipelines, training loops, inference serving, and deployment. - Design and implement GPU-accelerated components, including custom CUDA kernels where off-the-shelf libraries are not enough. - Work closely with the founders to translate product requirements into concrete optimization goals and technical roadmaps. - Build internal tooling, benchmarks, and evaluation harnesses that make it easy for the rest of the team to experiment, debug, and ship safely.
Why Join the Client: - You'll make a significant impact, getting in on the ground floor of a company that will alter software development forever. - You will shape how a never-before-seen foundation model is trained, optimized, and deployed. - The client emphasises transparency and direct, honest communication.
About the Interview: - No live or take-home coding tasks. 2 interviews max, 1hr (cultural, online) with CEO and 2hr (technical, face-to-face) with CPO. - Ask anything, full honesty is welcomed. The client welcomes candid questions.



