Full Stack Engineer (8 Month FTC)

AND Digital Limited; West of England; On-site; GBP 110,000 - 150,000; Full time

Job summary

AND Digital Limited helps organisations navigate the future of technology, combining human expertise, emerging tech and AI to deliver better outcomes, faster. We’re looking for experts who can modernize legacy systems with zero downtime, design scalable cloud-native architectures on AWS, and lead quality through robust test automation and governance across teams.

You will work within multidisciplinary teams, collaborating with clients to surface business rules, validate changes, and ensure

Qualifications

• Proven expertise in phased modernization with zero downtime.
• Experience building microservices on AWS with Kubernetes.
• Strong front-end testing using Playwright and Vitest.
• Ability to reverse-engineer legacy code to surface business rules.

Skills

Legacy modernization

Java Spring Boot

TypeScript/Node.js

React frontend

AWS EKS

GraphQL Apollo Router

Playwright testing

Vitest testing

Cloud AWS

Docker

Terraform

Technical leadership

Job description

Description

We help organisations navigate the future of technology, combining human expertise, emerging tech and AI to deliver better outcomes, faster.

Since 2014, we’ve worked side-by-side with clients to solve complex challenges, build high-performing teams, and create lasting capability.

About you:

• You care deeply about producing high-quality work that delivers real value
• You’re comfortable navigating ambiguity and solving complex problems collaboratively
• You bring strong expertise in your craft, alongside a willingness to keep learning
• You communicate clearly and build trust quickly with clients and teammates
• You’re pragmatic, adaptable and outcome-focused
• You value low-ego collaboration and enjoy working as part of multidisciplinary teams

What you’ll bring to the table:

• Demonstrate proven expertise in executing seamless, phased modernization strategies to transition away from legacy platforms like COBOL, Oracle, and PHP with zero downtime, utilizing feature flags (LaunchDarkly), change data capture, and shadow data reconciliation
• Architect and deploy scalable microservices using Java (Spring Boot) and TypeScript/Node.js on AWS EKS with Istio, alongside federated GraphQL via Apollo Router and RESTful web services
• Drive front-end excellence using modern React frameworks (Vite, Tailwind CSS, BaseUI), managing shared component libraries in Storybook, and championing robust automated testing with Playwright and Vitest
• Leverage deep cloud-native experience across AWS, Docker, Helm, Terraform, and Harness.IO, while managing databases like DocumentDB and PostgreSQL and migrating messaging workloads from SNS/SQS to Apache Kafka
• Analyze and reverse-engineer legacy codebases to surface hidden business rules, applying rigorous validation to ensure complete functional equivalence
• Design secure, high-performing hybrid architectures using mTLS links between AWS and on-premise infrastructure, conducting end-to-end load testing and ensuring system resilience
• Champion technical quality and governance by establishing clear quality standards, defining comprehensive test frameworks, and enhancing architectural documentation across teams

AI Statement

We champion tech that helps people work smarter, but we want to get to know you! If you use AI to assist with your application or interview prep, please ensure all information submitted remains an accurate, truthful representation of your personal achievements and capabilities rather than generating false or misleading information. We may reject applications where AI is used inappropriately at any stage of the recruitment process.

Equal Opportunities Statement

Diversity and inclusion are hugely important to us, and we’re committed to providing equal opportunities for all. We’re actively recruiting for a diverse and inclusive workforce so want to ensure we do everything we can to support your application.

We want you to feel safe and empowered to let us know if you need any adjustments to be made to your application or interview process, so please speak to our recruitment team.