AWS Application Developer (AI & Cloud Platform) at UST, London, £Contract Option

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 looking for a hands-on AWS Application Developer to help build and enhance a modern AI-enabled cloud platform. This is an exciting opportunity to work on a initiative focused on accelerating software delivery through automation, cloud-native development, AI-powered engineering, and self-service capabilities.

You will play a key role in developing reusable application patterns, platform services, governance controls, and developer tooling that enable engineering teams to build, deploy, and manage applications efficiently and securely.

Responsibilities

• Develop cloud-native applications, APIs, and platform services on AWS.
• Build reusable application templates, patterns, and developer accelerators.
• Design and implement scalable serverless solutions using AWS services.
• Develop and maintain CI/CD pipelines, infrastructure as code, and automated deployment processes.
• Integrate AI/GenAI capabilities into engineering workflows and applications.
• Implement automated governance, compliance, and operational controls.
• Collaborate with engineering teams to establish best practices for modern application development.
• Drive platform reliability through testing, monitoring, observability, and secure-by-design practices.

Essential Skills & Experience

• Strong application development experience with modern software engineering practices.
• Proven AWS development experience, including:

• Lambda

• API Gateway

• Step Functions

• Event-driven architectures

• Experience developing cloud-native and serverless applications.
• Hands-on experience using AI/GenAI tools within the software development lifecycle.
• Knowledge of CI/CD, GitHub Actions, DevOps practices, and Infrastructure as Code.
• Experience building secure, compliant, and automated development workflows.
• Strong understanding of API design, testing, observability, and application security.
• Ability to work independently in a fast-paced environment.

Nice to Have

• Python and FastAPI.
• TypeScript and React.
• AWS Bedrock, SageMaker, LangChain, or other GenAI frameworks.
• Experience building internal developer platforms or self-service engineering tools.
• Experience within Financial Services, Asset Management, Wealth Management, or other regulated industries.

What You'll Bring

• Strong problem-solving and engineering skills.
• Passion for cloud technologies, developer experience, and AI-driven innovation.
• A builder's mindset with a focus on delivering practical, scalable solutions.
• Excellent communication and stakeholder collaboration skills.
• Commitment to automation, security, and continuous improvements

If interested, please apply for an immediate discussion with Talent Team

#UST

Skills

AWS Lambda, AWS Step Functions, Agentic AI, AWS, CI/CD, CLI, FastAPI, Event-Driven Architecture, Axway

About UST
UST is a global digital transformation solutions provider. For more than 20 years, UST has worked side by side with the world’s best companies to make a real impact through transformation. Powered by technology, inspired by people and led by purpose, UST partners with their clients from design to operation. With deep domain expertise and a future-proof philosophy, UST embeds innovation and agility into their clients’ organizations. With over 30,000 employees in 30 countries, UST builds for boundless impact—touching billions of lives in the process.