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Lead Engineer, Machine Learning

bjakcareerUnited KingdomActAI Engineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Lead
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

Lead Engineer, Machine Learning at bjakcareer in the United Kingdom is a hands-on leadership position for a professional focused on scaling artificial intelligence production systems. This role suits an engineer experienced in turning research capabilities into reliable workflows for global users.

Role Overview

Lead Engineer, Machine Learning is a position at bjakcareer located in the United Kingdom. The professional in this role takes charge of the execution layer of intelligence, transforming model capabilities into reliable production systems across the entire model lifecycle.

Key Responsibilities

Manage the end-to-end machine learning systems powering the organization, spanning data, training, evaluation, inference, and deployment.
Create and develop training and fine-tuning pipelines for large models.
Formulate evaluation systems that track capability, robustness, safety, and real-world product performance.
Structure high-performance inference systems to optimize latency, GPU usage, memory, cost, and reliability.
Construct data pipelines and systems for real-world and synthetic training data.
Set up dependable production infrastructure for deploying, tracking, and upgrading models.
Collaborate with research and application engineering teams to convert model features into product enhancements.
Balance technical trade-offs and iterate based on real-world outcomes.

Requirements

Background in building and deploying machine learning systems in production rather than research prototypes.
Knowledge of modern large-model training, fine-tuning, evaluation, and inference.
Software engineering and systems foundations.
Familiarity running machine learning workloads at scale, particularly GPU-based systems.
Technical judgment and capability to solve ambiguous problems independently.
Focus on experimentation, measurement, and delivery.
Commitment to correctness, reliability, and production standards.

Skills and Tools

Python
PyTorch
JAX
GPU-based training and inference systems

About the Company

bjakcareer builds proactive applications designed to bring intelligence to conversations, errands, organizing, and workflows with minimal prompting. The organization focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion to reduce hallucinations and help users spend time on meaningful tasks.

How to Apply

Interested candidates should apply on the official company careers page.

Skills and tech stack

PythonPyTorchJAXGPU-based training and inference systemsMachine LearningFine-tuning

Questions candidates ask

Where is the Lead Engineer, Machine Learning role located?

The position is located in the United Kingdom.

What tools and languages are part of the tech stack?

The tech stack includes Python, PyTorch or JAX, and GPU-based training and inference systems.

What is the primary focus of the machine learning systems?

The focus is on achieving high reliability for long-running workflows, persistent context, real-world task completion, and reducing hallucinations.

What does the interview process involve?

The interview process consists of three to four interviews conducted via virtual meetings and or onsite.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site