Solution Architect - AWS Integration & API Gateway

We are seeking a Solution Architect to design and lead a central email gateway. It will sit between the client's commerce platform, its middleware (enterprise service bus) and a new email service provider, and will carry all business-critical transactional email, such as order, shipping, refund and account notifications. The gateway offers two integration models: a pass-through API for systems that are ready to use the new provider directly a backward-compatible API that mimics the legacy provider, so existing systems only need to change an endpoint The Architect will own the AWS target architecture, the versioned API contracts, a configuration-driven mapping model, and the resilience design needed to make sure no email is lost or sent twice. The role leads a small cross-functional team on a short build window, drives technical decisions with the client's architects, and owns cutover readiness and early-life support. Required Skills & Competencies Strong solution architecture experience on AWS: API Gateway, ECS/Fargate, SQS, EventBridge, Secrets Manager, IAM and KMS Configuration management using AppConfig or DynamoDB; observability with CloudWatch and OpenTelemetry/ADOT or X-Ray; CI/CD and infrastructure-as-code design. Proven design of API gateways or enterprise integration layers for high-volume transactional systems Hands-on with Node.js/TypeScript or Java/Spring Boot microservices Strong grasp of resilience patterns, idempotency and event-driven design OpenAPI-first design and contract testing practices Excellent stakeholder communication and technical leadership Good-to-Have Exposure to email service provider platforms; retail transactional email, ESB/middleware platforms Fastify; Akamai WAF; Terraform or AWS CDK; OpenSearch/ELK-based operational search. AWS Solutions Architect – Professional certification Qualifications 12+ years of relevant software engineering experience with solution architecture and hands-on technical leadership. B.E./B.Tech/MCA or equivalent AWS architecture certification is desirable.