AWS Technology Lead – AWS Cloud Modernization & Platform Engineering

AWS Technology Lead – AWS Cloud Modernization & Platform Engineering

Location: London, UK – Hybrid

Address: Holborn Viaduct, London EC1A 2FD

Experience: 12–15+ years

Role Summary

We are seeking a senior, hands-on AWS Technology Lead / Solution Architect to lead a large-scale application modernization programme, transforming legacy Java enterprise applications into scalable, secure and cloud-native AWS solutions.

The role combines AWS architecture, Java engineering, serverless, containers, database architecture/DBA, DevOps, platform engineering and customer-facing technical leadership.

The ideal candidate must be able to move between architecture workshops, hands-on engineering, DynamoDB/Aurora PostgreSQL, CI/CD, production readiness and technical team leadership.

Key Responsibilities

AWS Cloud & Application Modernization

Lead modernization of enterprise Java applications into AWS cloud-native, microservices and event-driven architectures.

Define target architecture, modernization roadmap, transition states and technical standards.

Drive API-first, Domain-Driven Design (DDD), microservices and serverless adoption.

Design and implement ECS, Fargate, Docker, ECR, Lambda, API Gateway, EventBridge, SQS, SNS and Step Functions.

Implement AWS security, networking, monitoring and operational services including IAM, VPC, CloudWatch, CloudTrail, S3, Secrets Manager, Route 53 and PrivateLink.

Java / Software Engineering

Provide hands-on technical leadership across Java 11/17+, Spring Boot, Spring Cloud, REST APIs, Python and TypeScript.

Guide teams in microservices, distributed systems, asynchronous integration and fault-tolerant design.

Conduct architecture/code reviews and contribute to POCs, technical spikes and complex defect resolution.

Establish coding standards, design patterns and secure development practices.

Database Architecture & DBA

Strong hands-on expertise with Amazon DynamoDB and Amazon Aurora PostgreSQL/PostgreSQL.

Design DynamoDB data models, including partition keys, sort keys, GSI/LSI, TTL, Streams and Global Tables.

Troubleshoot DynamoDB hot partitions, throttling, performance and cost issues.

Design Aurora PostgreSQL schemas, indexing, partitioning and high-availability solutions.

Perform SQL tuning, execution-plan analysis and query optimization.

Handle backup, recovery, replication, failover, patching and disaster recovery.

Lead database migrations from Oracle, MySQL, PostgreSQL or other legacy platforms.

DevOps & Platform Engineering

Design and govern CI/CD using Jenkins, Git, GitHub Actions, AWS CodePipeline and CodeBuild.

Implement infrastructure automation using Terraform and/or CloudFormation.

Establish automated testing, security scanning, code quality and release controls.

Define monitoring, logging, tracing, alerting and SLO practices.

Drive DevSecOps and continuous improvement.

Technical & Customer Leadership

Act as the primary technical contact for customer architects and engineering/programme stakeholders.

Lead discovery sessions, architecture workshops, design reviews and technical governance.

Translate business requirements into scalable technical solutions.

Communicate architecture decisions, risks, dependencies and delivery status to technical and executive stakeholders.

Lead and mentor architects, developers, DevOps/cloud engineers and database specialists.

Mandatory Skills

Must-have technical stack:

AWS Architecture

Amazon ECS / Fargate

AWS Lambda / API Gateway

Event-driven architecture

Microservices / Distributed systems

Java 11/17+, Spring Boot, Spring Cloud

REST APIs

Python / TypeScript

DynamoDB – strong hands-on

Aurora PostgreSQL / PostgreSQL – strong hands-on DBA

SQL tuning and database performance optimization

Data modelling and database migration

Docker

Jenkins / Git / CI/CD

Terraform and/or CloudFormation

AWS security and monitoring

Architecture governance and technical leadership

Customer/stakeholder management