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About the Role

The Machine Learning Platform team builds systems that enable teams across Monzo to safely and reliably train, evaluate, deploy, and serve machine learning models and AI features. This role is crucial as machine learning powers significant decisions and experiences at Monzo, including fraud checks, credit decisions, and customer operations. The platform engineering role in the ML and AI space focuses on building tools and systems for other engineers, combining strong software engineering foundations with ML or AI context.

Responsibilities

Build backend services, Python libraries, model lifecycle tooling, evaluation workflows, and low-latency serving systems.
Develop ML and AI platform systems such as model serving, evaluation, feature engineering, experiment workflows, and LLM infrastructure.
Operate reliable systems in production using Kubernetes, AWS, GCP, Terraform, and Envoy Proxy.
Focus on developer experience and removing friction for internal teams.
Work across both Go and Python.
Work with AWS or GCP, and with Kubernetes.
Shape a platform as it grows.
Write and work on backend software.
Ensure reliability, latency, quality, safety, and operational risk of systems in production.

Requirements

Combine solid backend engineering with real ML or AI platform experience (ML pipelines, feature stores, model serving, experiment tracking or LLM tooling).
Designed and operated distributed systems that handle scale, concurrency and failure.
Experience with strongly typed languages.
Curious about how systems behave in production.

Skills

Backend services
Python libraries
Model lifecycle tooling
Evaluation workflows
Low-latency serving systems
ML and AI platform systems
Model serving
Feature engineering
Experiment workflows
LLM infrastructure
Kubernetes
AWS
GCP
Terraform
Envoy Proxy
Go
Python
Distributed systems
Strongly typed languages

Location

London
UK Remote
Distributed working within the UK

Work Type

Flexible working hours
Part-time options available

Experience Level

L40 Engineers

Salary/Compensations

£85,000 - £110,000
Incentive Awards tied to performance

Benefits

Relocation assistance to the UK
Visa sponsorship
Learning budget of £1,000 a year for books, training courses and conferences
Twice-weekly Monzo lunches & treat Thursdays

About the Company

Monzo is on a mission to make money work for everyone, moving away from traditional banking complexities.
The company has grown significantly over 10 years, offering personal and business accounts, joint accounts, accounts for 16-17 year olds, a free kids account, credit cards, savings, investments, and pensions in the UK.
Monzo is known for its hot coral cards, get-paid-early feature, financial education on social media, and award-winning customer service.
The company focuses on solving problems and changing lives through its products.
Monzo has around 600 engineers out of approximately 5,000 total employees.
Engineers have the opportunity to move between teams or specialize and collaborate across the company.
Regular knowledge-sharing sessions cover topics from banking operations to effective communication.
Monzo contributes to open-source software and shares insights through its blog.

Equal Opportunity

All applicants will be considered for employment without attention to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, or veteran, neurodiversity or disability status.
Monzo is committed to fostering an inclusive environment for all people to do the best work of their lives.
Diversity and inclusion are a priority, with support for all employees to grow.