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Applied Machine Learning Engineer, EMEA

Fireworks AILondonEngineering
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Salary
Not listed
Job type
Full-time
Posted
2 Sept 2026
Status
Open · checked 7d ago

About this role

Role Overview

The Applied Machine Learning Engineer role at Fireworks AI in London positions the technical owner directly inside customer engagements to guide specialized intelligence projects from scoping to production. This position suits a skilled engineer who thrives on depth over breadth, embedding with select accounts to solve complex integration, model, and performance challenges.

Key Responsibilities

Take complete technical ownership of customer deployments, guiding them from initial scoping through to production.
Embed directly inside customer teams to understand their unique domains, data, and constraints.
Execute fine-tuning and post-training work, managing everything from data handling and evaluation to serving models in production.
Optimize serving performance and cost on the Fireworks platform through strategic model choice, deployment shape, and inference optimization.
Assess and scope work honestly prior to commitment, taking full accountability for the deliverables.
Relay precise, actionable product signals from customer needs back to the internal product and engineering teams.

Requirements

Demonstrate spikes in two or all three core areas: software engineering, machine learning, or infrastructure.
For the machine learning spike, candidates must have formal training including a PhD, PhD in progress, or a strong MSc, alongside specific experience post-training large language models.
For the infrastructure spike, demonstrate hands-on experience with GPU infrastructure, distributed serving, or inference engines.
Prior founder or founding engineer experience.
Professional background working in a startup or fast-paced operational environment.

Skills and Tools

Python
PyTorch
GPU infrastructure and distributed serving
Inference optimization, quantization, and speculative decoding
Supervised fine-tuning (SFT), LoRA, and reinforcement learning (RLHF, RLVR)

About the Company

Fireworks is the platform for specialized intelligence, enabling companies to build, train, and serve AI models tailored to their own data, workflows, and products. Founded by the team behind PyTorch, the Series D company powers production AI with hundreds of state-of-the-art open models across text, image, embedding, audio, and multimodal workloads.

How to Apply

Please apply on the official company careers page.

Skills and tech stack

PythonPyTorch

Questions candidates ask

What is the job title for this position?

The job title is Applied Machine Learning Engineer, EMEA, which operates as a Forward Deployed Engineer role.

Where is this job located?

This position is located in London.

What qualifications are required for the machine learning spike?

Candidates must have formal training consisting of a PhD, PhD in progress, or a strong MSc, along with specific experience in post-training LLMs.

What core technical skills are highlighted in the job profile?

Key technical skills include Python, PyTorch, GPU infrastructure management, distributed serving, and inference optimization.

How should I apply for this position?

Candidates should apply on the official company careers page.

Ready to apply?

The application is on the official Fireworks AI careers page.

Apply on company site