10254

3Core Systems, Inc; Chicago Heights (IL); Hybrid; USD 140,000 - 180,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

3Core Systems, Inc. is seeking a Release Train Engineer to lead Azure infrastructure and AKS initiatives in a hybrid Chicago environment. The role combines hands-on engineering with collaboration across architecture, security, and operations to deliver secure, scalable deployments.

You will implement IaC, manage CI/CD for multiple environments, and ensure governance and release quality within the PADS program. Strong leadership and communication are essential.

Qualifications

• Hands-on provisioning, configuring, and troubleshooting Azure infrastructure.
• AKS, virtual networks, subnets, network security groups, storage accounts.
• Deploying and supporting containerized API services on AKS.
• AKS clusters: node pools, scaling, upgrades, resource quotas, workload availability.
• YAML-based CI/CD pipelines in Azure DevOps or GitHub Actions.
• Automated testing, artifact management, environment promotion, rollback.

Responsibilities

• Execute production releases, validate service health after deployment, and maintain tested rollback procedures and release runbooks.
• Configure and operate Cosmos DB databases, including container creation, index maintenance, RU allocation, and data copying.
• Build and maintain CI/CD pipelines to automate builds, tests, image publishing, and deployments across environments.
• Configure Kubernetes deployments, services, ingress, health probes, resources, and environment-specific settings.
• Implement secure API connectivity: DNS, TLS, load balancing, private endpoints, and API Management integration.

Skills

Azure

Kubernetes

Docker

BASH

PowerShell

Python

Terraform

YAML

Azure DevOps

GitHub Actions

RTE Certification

Education

Bachelor’s Degree

Tools

Azure DevOps

GitHub Actions

Terraform

Job description

Release Train Engineer Azure Infrastructure and AKS

Chicago Heights, United States | Posted on 10/22/2026

Job Title: Release Train Engineer Azure Infrastructure and AKS

Job Location: Chicago, IL, 60603

Work Model: Hybrid

Work Model Details: 3 times a week is mandatory

Shift: M-F, 8am - 5pm

Employment Type: Temp to Hire

Must Have Skills/Attributes: ADO, Azure, BASH, Docker,Kubernetes, PowerShell, Python, Release Train Engineer (RTE) Certified,Terraform, YAML

Experience Desired

• Azure Infrastructure and AKS (10 yrs)
• Kubernetes, Docker and Helm (10 yrs)
• CI/CD Pipeline Engineering (10 yrs)
• Infrastructure as Code & Scripting (10 yrs)
• Networking, Security & Monitoring (10 yrs)

Required Minimum Education: Bachelor’s Degree

Job Description

RequiredEducation: Bachelor’s Degree

PreferredCertification

RequiredSkills

• Hands-on provisioning,configuring, and troubleshooting Azure infrastructure
• (Secondary) AKS, virtualnetworks, subnets, network security groups, storage accounts
• Deploying and supportingcontainerized API services on AKS
• (Secondary) AKS clusters: nodepools, scaling, upgrades, resource quotas, workload availability
• YAML-based CI/CD pipelines inAzure DevOps or GitHub Actions
• Automated testing, artifactmanagement, environment promotion, rollback
• Integrating automated tests,container image scanning, security checks, approval gates
• Scripting: PowerShell, Bash, orPython
• Infrastructure as Code
• Terraform or Bicep
• Git-based version control
• (Secondary) Terraform modules,version-controlled configurations
• Linux, HTTP/REST APIs, DNS, TLS,ingress, load balancing
• Access controls and secretsmanagement (Azure Key Vault)
• Least-privilege access, managedidentities, workload identity, RBAC
• Production monitoring, incidenttroubleshooting, controlled releases
• Dashboards and actionable alerts
• Root-cause resolution acrossapplication and infrastructure layers
• Tested rollback procedures andrelease runbooks
• Cosmos DB: container creation,index maintenance, RU allocation, data copying
• Agile/SAFe: value streamimprovement, DevOps, Release on Demand, Continuous Delivery Pipeline
• Partnering with Agile PMO anddelivery leadership (reporting, governance)

Preferred (not required)

• Enterprise API/integration/dataplatform experience in financial services or regulated environments

RequiredSoft Skills

• Clear communication acrossengineering, security, and operations teams
• Ownership of technical issuesthrough resolution
• Collaboration with developers,architects, security, platform teams

TheRelease Train Engineer will provision and manage Azure infrastructure, builddeployment automation, and deploy and support API services on Azure KubernetesService (AKS). This is a hands-on engineering role requiring practicalexperience with Azure, Kubernetes, infrastructure as code, and CI/CD pipelines.The engineer will work with development, architecture, security, and operationsteams to deliver secure, reliable, and repeatable deployments acrossdevelopment, test, and production environments, and will communicate releasestatus and progress to business and technical stakeholders in the PADS program.

KeyResponsibilities

• Execute production releases,validate service health after deployment, and maintain tested rollbackprocedures and release runbooks.
• Configure and operate Cosmos DBdatabases, including container creation, index maintenance, RU allocation,and data copying.
• Build and maintain CI/CDpipelines (Azure DevOps or GitHub Actions) to automate builds, testing,image publishing, and deployments across environments.
• Configure Kubernetes deployments,services, ingress, health probes, resource requests/limits, andenvironment-specific application settings.
• Configure secure APIconnectivity: DNS, TLS certificates, load balancing, private endpoints,and Azure API Management integration where required.
• Implement least-privilege access,managed identities, workload identity, RBAC, and secure secrets managementvia Azure Key Vault.
• Integrate automated tests,container image scanning, security checks, and approval gates intodeployment pipelines.
• Implement monitoring, logging,dashboards, and actionable alerts using Azure Monitor, Log Analytics, andApplication Insights.
• Troubleshoot failed deployments,pod/container issues, networking, authentication, and API performanceproblems; resolve root causes with development and operations teams.
• Maintain environment consistency,deployment documentation, and change records per enterprise security andchange-management requirements.
• Partner with developers,architects, security, and platform teams to resolve infrastructuredependencies and prepare API services for production.
• Improve deployment reliability,recovery time, resource utilization, and Azure costs through automation,capacity tuning, and operational improvements.
• Encourage collaboration betweenteams, Product Management, Product Owners, System/Solution Architects,engineering, security, and operations.
• Improve value flow through valuestreams by strengthening DevOps, Release on Demand, and ContinuousDelivery Pipeline practices.
• Partner with the Agile ProgramManagement Office and delivery leadership to support program execution,operational excellence, reporting, and governance.
• Develop and maintaininfrastructure as code using Terraform (version-controlled configs,reusable modules, controlled environment changes).
• Configure and operate AKSclusters: node pools, scaling, upgrades, resource quotas, workloadavailability.
• Containerize API services usingDocker; deploy to AKS via Kubernetes manifests and Helm charts.
• Automate routineinfrastructure/operational tasks using Azure CLI, PowerShell, or Bash toreduce manual effort and configuration drift