Full Stack Engineer (Angular/React Java/Go AWS) -

Full Stack Engineer (Angular/React + Java/Go + AWS) - St. Louis, MO **Client: Mastercard

Location: O’Fallon, MO (Hybrid – 3 days onsite per week / Locals only)

Duration: 6 Months (Extension possible based on budget)** Candidate must be local to St. Louis MO and have strong working experience on (Angular / React + Java/ GO + AWS) Over All 12+ years of experience candidate and should share a local government-issued ID card. Job Description Mastercard is seeking an experienced Senior Software Engineer to build and enhance a cloud-native payment orchestration platform. The role focuses on developing scalable microservices, integrating backend APIs with mobile SDKs, and building AI-powered solutions using AWS cloud technologies.

Required Skills

• Strong hands-on experience with Golang and/or Java, Python, and REST APIs.
• Expertise in AWS ECS, Fargate, AWS Graviton/ARM64, and cloud-native architecture.
• Experience with Amazon Bedrock and AgentCore Runtime for AI-native engineering.
• Hands-on experience with Terraform and/or AWS CloudFormation.
• Knowledge of microservices, Kubernetes, and end-to-end application troubleshooting.
• Frontend experience with Angular and/or React is a plus.

Additional Details

• Must be available to work onsite 3 days per week in O’Fallon, MO.