Senior Platform Engineer
St. Louis, MO
Category: Security
Industry: Financial Services
Reference ID: JN -042026-106501
Date Posted: 04/21/2026
Shortcut: http://careers.eliassen.com/tucn7i
Description:
Hybrid 4 days on-site, 1 day work from home in St. Louis, MO
Our client seeks a Senior Platform Engineer to enhance CI/CD pipelines, remediate security vulnerabilities, and maintain hardened Docker images that support hundreds of developers. The role will operate within a Scrum team and focus on GitLab pipeline optimization, container security, and compliance. The engineer will also contribute to Terraform modules, AWS services, and modernization efforts including a test suite conversion to TypeScript. On-call participation for incident response and platform support is required.
Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $90.00 to $110.00/hr. w2
Responsibilities:
- Enhance and optimize GitLab CI/CD pipelines across 15+ repositories with standardized templates.
- Improve pipeline reliability, performance, and cost-efficiency, including Maven and NPM build best practices.
- Execute CVE remediation using Trivy, Snyk, and AWS Inspector following established processes.
- Maintain security compliance with CIS benchmarks and DISA STIGs for platform offerings.
- Coordinate remediation efforts with application teams and document security patterns.
- Maintain and update base Docker images in ECR and Artifactory to meet compliance standards.
- Implement image scanning and validation processes and support base image adoption.
- Develop Terraform infrastructure-as-code modules for platform services.
- Manage AWS resources via CLI and services including EC2, ECS/EKS, ECR, Lambda, IAM, VPC, and S3.
- Support PostgreSQL and Oracle PL/SQL database operations.
- Convert an existing test suite from Bash to TypeScript.
- Refactor legacy platform components and improve observability.
- Create and maintain internal documentation and provide developer guidance in support channels.
- Participate in on-call rotation for incident response, troubleshooting, and platform support.
Experience Requirements:
- 5+ years in platform or infrastructure engineering.
- Proven experience supporting large-scale developer platforms.
- Strong proficiency with TypeScript.
- Hands-on expertise with AWS CLI and core services (EC2, ECS/EKS, ECR, Lambda, IAM, VPC, S3).
- Advanced GitLab CI/CD pipeline engineering and template standardization.
- Docker image management with ECR and Artifactory.
- Infrastructure-as-code with Terraform.
- CVE remediation using Trivy, Snyk, and AWS Inspector.
- Knowledge of security compliance frameworks including CIS benchmarks and DISA STIGs.
- Experience with Maven and NPM build processes.
- Proficiency with PostgreSQL and Oracle PL/SQL.
- Demonstrated DevSecOps practices and mindset.
- On-call and incident response experience.
- Effective communication skills in cross-functional environments.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above