AWS Application Modernisation Architect

IBU; Greater London; On-site; GBP 120,000 - 150,000; Full time

Job summary

IBU seeks a hands-on Technology Lead to modernise a large-scale Java enterprise application into a secure, scalable, cloud-native platform on AWS. The role blends solution architecture, software engineering, database expertise, DevOps and customer-facing technical leadership.

You will lead end-to-end Java modernisation including microservices, API-first design, serverless patterns and distributed systems. Define the target architecture, roadmaps and engineering standards; design and implement

Qualifications

• 12+ years in enterprise technology, architecture or software engineering leadership.
• Strong hands-on AWS cloud architecture and application modernisation experience.
• Deep expertise in Java, Spring Boot, microservices and distributed systems.
• Hands-on DynamoDB and Aurora PostgreSQL data modelling and migration.

Responsibilities

• Lead end-to-end Java application modernisation, including microservices, API-first, serverless and event-driven architecture.
• Define target architecture, modernisation roadmap, technical standards and engineering best practices.
• Design and implement AWS solutions using ECS, Fargate, Lambda, API Gateway, EventBridge, SQS, SNS, Step Functions, S3 and CloudWatch.
• Provide hands-on technical leadership across Java 11/17+, Spring Boot, Spring Cloud, REST APIs, Python and TypeScript.
• Mentor engineering teams and coordinate architects, developers, DevOps and database specialists across distributed workstreams.
• Drive observability, security, resilience, performance and production-readiness standards.

Skills

Java

Spring Boot

Microservices

AWS

DynamoDB

Aurora PostgreSQL

Docker

CI/CD

Terraform/CloudFormation

Jenkins

GitHub Actions

TypeScript

Python

REST APIs

Serverless

Tools

Terraform

CloudFormation

Jenkins

GitHub Actions

Job description

We are seeking a hands-on Technology Lead to lead the modernisation of a large-scale Java enterprise application into a secure, scalable and cloud-native platform on AWS. The role combines solution architecture, software engineering, database expertise, DevOps and customer-facing technical leadership.

Key Responsibilities

• Lead end-to-end Java application modernisation, including microservices, API-first, serverless and event-driven architecture.
• Define target architecture, modernisation roadmap, technical standards and engineering best practices.
• Design and implement AWS solutions using ECS, Fargate, Lambda, API Gateway, EventBridge, SQS, SNS, Step Functions, S3 and CloudWatch.
• Provide hands-on technical leadership across Java 11/17+, Spring Boot, Spring Cloud, REST APIs, Python and TypeScript.
• Lead database architecture and hands-on engineering across Amazon DynamoDB and Aurora PostgreSQL, including data modelling, performance tuning, migration, HA/DR and operational support.
• Establish and govern CI/CD, DevSecOps and Infrastructure as Code using Jenkins/GitHub Actions, Terraform and/or CloudFormation.
• Drive observability, security, resilience, performance and production-readiness standards.
• Lead architecture workshops, technical governance and design reviews with customer stakeholders.
• Mentor engineering teams and coordinate architects, developers, DevOps and database specialists across distributed workstreams.
• Support complex technical issues, proof-of-concepts, performance optimisation and production transition.
• 12+ years in enterprise technology, architecture or software engineering leadership.
• Strong hands-on experience with AWS cloud architecture and application modernisation.
• Deep expertise in Java, Spring Boot, microservices and distributed systems.
• Strong hands-on DynamoDB and Aurora PostgreSQL/PostgreSQL experience, including DBA, SQL tuning and data migration.
• Experience with Docker, CI/CD, Jenkins/GitHub Actions and Terraform/CloudFormation.
• Proven experience leading technical teams and engaging with senior customer stakeholders.
• Strong communication, architecture governance, problem-solving and mentoring skills.
• Agile delivery and geographically distributed engineering teams.
• Experience in high-volume sectors such as logistics, retail, financial services or manufacturing.