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