Senior Platform Engineer (AI, AWS & Developer Experience) -Product Engineer I

UST

Greater London

Hybrid

GBP 90,000 - 130,000

Full time

2 days ago

Be an early applicant

Application generator

Get a reply from this employer — a resume and cover letter tailored to exactly what they’re hiring for.

Get past ATS filters

Job summary

UST seeks a Senior Platform Engineer to design and build an AWS-native developer platform from the ground up. The role emphasizes AI-enabled tooling, secure governance, and scalable CI/CD pipelines in a hybrid London environment.

You will deliver APIs, workflows, and platform capabilities that accelerate software delivery while embedding security and compliance by default. Strong AWS, Python, TypeScript, and DevEx focus are essential for success.

Qualifications

Hands-on AWS development experience across cloud-native applications.
Experience designing and delivering AI-enabled developer platforms.
Familiarity with agentic AI, AI services, and governance controls.

Responsibilities

Build cloud-native platform services, APIs, tooling, and automation on AWS.
Develop AI-powered capabilities using AWS Bedrock and agentic AI frameworks.
Create reusable platform patterns and developer accelerators to boost productivity.

Skills

Strong software engineering

AWS development

DevEx

Python

TypeScript

React

AI-native software development

CI/CD

Security by design

Tools

AWS Lambda

API Gateway

Step Functions

EventBridge

Terraform

CloudFormation

GitHub Actions

Job description

Role Description

Location: London (Hybrid – 3 days onsite, mandatory)

Employment Type: Permanent | Fixed-Term Contract | Contract (Inside IR35)

Start Date: Immediate/ Short Notice period

About The Role

We are seeking a Senior Platform Engineer (AI, AWS & Developer Experience) to help design and build the platform from the ground up. This is a hands‑on engineering role focused on AWS‑native application development, internal developer platforms, agentic AI, automation, and engineering governance.

You will create the tools, APIs, developer workflows, AI services, and platform capabilities that accelerate software delivery while embedding security, compliance, and operational excellence by default.

Key Responsibilities

Build cloud-native platform services, APIs, developer tooling, and automation on AWS.
Design and develop AI-powered engineering capabilities using AWS Bedrock and agentic AI frameworks.
Create reusable platform patterns, templates, and developer accelerators that improve engineering productivity.
Build serverless and event-driven applications using AWS services.
Develop AI-enabled workflows, governance controls, and operational automation.
Design and implement CI/CD pipelines, Infrastructure as Code, and engineering controls.
Build and integrate internal developer platforms, self-service capabilities, APIs, and developer experiences.
Collaborate with engineering teams to define best practices for AI-native software development.
Drive platform quality through observability, automated testing, security, and documentation.

Essential Skills & Experience

Strong software engineering and application development background.
Extensive hands‑on AWS development experience.
Strong experience with:
AWS Lambda
API Gateway
Step Functions
EventBridge
Serverless and event-driven architectures
Hands‑on experience with AWS Bedrock and AI-native application development.
Experience designing, developing, or integrating agentic AI solutions, AI assistants, autonomous workflows, or AI-powered engineering tools.
Experience using AI coding assistants and AI-assisted engineering practices in daily development activities.
Strong knowledge of developer platforms, developer tooling, and engineering enablement.
Experience building cloud‑native APIs and platform services.
Strong CI/CD automation experience using GitHub Actions.
Infrastructure as Code experience using Terraform, CloudFormation, or similar tools.
Experience embedding governance, security, compliance, and operational controls into delivery pipelines.
Strong understanding of secure‑by‑design engineering principles.
Excellent stakeholder collaboration and communication skills.
Python and FastAPI.
TypeScript and React.
Developer Experience (DevEx) engineering.
Internal Developer Platform (IDP) experience.
Experience building AI platforms or AI‑enabled developer services.
Financial Services or other regulated industry experience preferred
Knowledge of AI governance, auditability, and responsible AI practices.

What We're Looking For

We are looking for a hands‑on engineer who combines deep AWS expertise with a passion for AI‑native software development.

You Should Be

An experienced builder who enjoys working close to the code.
Passionate about developer experience, automation, and platform engineering.
Comfortable designing and developing solutions using AWS Bedrock and agentic AI technologies.
An advocate for engineering excellence, reusable patterns, and modern delivery practices.
Security‑conscious and automation‑focused.
Able to thrive in a fast‑moving, greenfield environment.

Skills