Senior AWS Cloud Infrastructure Engineer

3Core Systems, Inc; Irving (TX); On-site; USD 140,000 - 180,000; Full time

Job summary

3Core Systems, Inc. is seeking a Senior AWS Cloud Infrastructure Engineer to join the on-site team in Irving, TX (with some flexibility for Peoria, IL).

This 12-month contract role requires designing and operating AWS infrastructure across multi-account environments, leveraging EKS/ECS-Fargate, Lambda, S3, and DynamoDB, with IaC via CloudFormation and CI/CD using GitHub Actions. The ideal candidate has 7+ years building AWS infrastructure, holds an AWS certification, and possesses a Bachelor's

Qualifications

• Bachelor's degree in computer science or information technology required.
• 5+ years designing and operating AWS infrastructure across multiple accounts.
• Experience with EKS/ECS/Fargate and container workloads in production.
• Strong background in serverless services (Lambda, API Gateway, Step Functions, EventBridge, S3, Glue, DynamoDB).
• Infrastructure as code and CI/CD automation using GitHub Actions.

Responsibilities

• Provision and operate data/serverless infrastructure: S3, Glue, Lambda, API Gateway, Step Functions, EventBridge, DynamoDB.
• Build and maintain EKS clusters and ECS/Fargate environments.
• Automate infrastructure delivery with CloudFormation templates and GitHub Actions pipelines.
• Design and troubleshoot VPC networking, load balancers, IAM, KMS, and cross-account access.
• Onboard new business unit environments, estimate costs, and provide production support.

Skills

AWS infrastructure design

EKS & ECS/Fargate

Lambda & API Gateway

CloudFormation

VPC & IAM

Education

Bachelor's degree in Computer Science or IT

Tools

CloudFormation

Job description

Irving, United States | Posted on 10/28/2026

Job Title: SeniorAWS Cloud Infrastructure Engineer

Location: Irving,TX / Peoria, IL (Onsite)

Duration: 12months contract

Must HaveSkills/Attributes:

• · Hands-on experience designing and managing AWSinfrastructure (7+ yrs).
• · Experience with Amazon EKS, ECS/Fargate, andcontainerized workloads in production (5+ yrs).
• · AWS Lambda, API Gateway, Step Functions,EventBridge, S3, Glue, and DynamoDB. (5+ yrs).
• · Infrastructure as Code (CloudFormation) andCI/CD automation using GitHub Actions. (5+ yrs).
• · AWS networking and security, including VPC, IAM,ALB/NLB, KMS, SCPs, cross-account access, along wit (5+ yrs).

RequiredCertifications/Licenses:

AWS Certification.

JOBDESCRIPTION:

RequiredEducation/Experience:

Bachelor's degree in computer science or informationtechnology.

RequiredLicenses/Certifications:

AWS Certification (AWS Certified SolutionsArchitect).

RequiredQualifications:

• · The DASH (Data & Serverless) team is part ofCLIENT AWS Platform organization.
• · 5-7 years' experience in this capacity.
• · We design, provision, and operate the AWSinfrastructure that business units use for data, serverless, and containerworkloads, so application teams can build on secure, standard foundations.
• · As a customer-facing platform team, we workdirectly with business units to understand their needs and turn them intoreliable AWS environments.

Position’sContributions to Work Group:

• · We design, provision, and operate the AWSinfrastructure that business units use for data, serverless, and containerworkloads, so application teams can build on secure, standard foundations.
• · As a customer-facing platform team, we workdirectly with business units to understand their needs and turn them intoreliable AWS environments.

RequiredTechnical Skills:

• · Hands-on experience building and operating AWSinfrastructure in a multi-account environment.
• · Experience provisioning and supporting EKS,ECS/Fargate, Lambda, S3, and Glue.
• · Strong AWS networking and IAM skills: VPC, ALB/NLB,SCPs, and permission boundaries.
• · Infrastructure as code with CloudFormation(preferred), plus CI/CD with GitHub Actions.
• · Scripting in Python and/or Bash for automation.
• · Strong customer focus and communication skills,including explaining technical options to non-AWS teams.

Responsibilities:

• · Provision and operate the infrastructure fordata and serverless services: S3, Glue, Lambda, API Gateway, Step Functions,EventBridge, and DynamoDB.
• · Build, upgrade, and maintain EKS clusters andECS/Fargate environments.
• · Automate infrastructure delivery with reusableCloudFormation templates and GitHub Actions pipelines.
• · Design and troubleshoot VPC networking, loadbalancers, IAM, KMS, and cross-account access.
• · Onboard new business unit environments, estimatecosts, and provide production infrastructure support.
• · Act as a technical point of contact for businessunit customers by guiding requirements, setting clear expectations, andresolving issues quickly.