Principal Platform Engineer

Modern Technology Solutions, Inc. (MTSI) is searching for a Principal Platform Engineer located in Dayton, Ohio.
Daytoday responsibilities include deploying, maintaining, and improving cloudnative and containerized platform services built on Kubernetes and Docker. The Platform Engineer will build and manage CI/CD pipelines, create deployment configurations, and maintain platform reliability across databases, search tools, and containerized applications. They will troubleshoot issues across applications, containers, and cluster infrastructure while collaborating with software, UX, QA, and product teams to support development workflows. The role includes refining platform architecture, implementing infrastructureascode practices, and advancing modernization initiatives such as microservices and secure delivery patterns. The Platform Engineer will participate in Agile ceremonies, contribute to design and code reviews, and document platform decisions to support team growth. This position requires handson ownership of platform operations and continuous improvement of engineering practices.

How you will contribute to our National Security and Defense mission: As a Platform Engineer with MTSI, you will help design, implement, and sustain secure, scalable platform capabilities that support missionfocused software delivery across cloudnative and onpremise environments. You will apply modern engineering practices to build containerized and distributed systems, ensuring reliable operations through strong Kubernetes, Docker, and CI/CD expertise. Your contributions will ensure that development teams have stable, secure, and highperforming environments by deploying and integrating databases, search tools, and platform services such as PostgreSQL, Neo4j, OpenSearch, and Spark. You will take a handson role in improving platform automation, evolving microservice architectures, and strengthening infrastructureascode patterns to support mission requirements. You will work collaboratively with software, UX, QA, and product teams, translating mission needs into maintainable and repeatable platform solutions. Additionally, you will help drive continuous improvement efforts through Agile execution, technical demos, code reviews, and mentoring engineers to uplift engineering practice across the organization. This position is hybrid, with a need to work onsite or remotely depending on tasking and mission requirements.

You'll be a great fit for this role if:

• Strong collaboration skills, with a proven ability to work closely with software, UX, QA, platform, and product teams in fast moving mission environments.
• Effective communication of technical concepts to diverse stakeholders, including mentoring junior developers and guiding engineering teams.
• Demonstrated leadership in Agile environments, contributing to sprint planning, backlog refinement, demos, and cross team knowledge sharing.
• Proactive problem solver able to troubleshoot complex issues across applications, containers, databases, and cluster infrastructure.
• Adaptable in dynamic mission environments, with experience supporting rapid modernization and evolving architectural patterns.
• Detail oriented and committed to secure, maintainable engineering practices through documentation, design reviews, and continuous improvement.

Responsibilities : Your essential job functions will include but may not be limited to:

• Deploy, configure, and maintain IT related processes for planning, execution, and reporting to include: Azure Kubernetes Service deployments, Helm deployments, Istio integrations, Service Gateways, ArgoCD automated deployments, Docker Image building, CI/CD Pipeline deployments, Requirements management, Architecture, Integration, Verification and Validation, Transition, Configuration Management, Software Engineering, Cybersecurity, Cloud Technology Services, and Software Development Lifecyle.
• Build and manage CI/CD pipelines, deployment configurations, and automated workflows to ensure reliable and repeatable software delivery.
• Integrate and sustain platform components including PostgreSQL, Neo4j, OpenSearch, pgAdmin, and Spark, ensuring smooth data and application operations.
• Diagnose and resolve issues across cluster infrastructure, containers, databases, and application layers while maintaining high operational reliability.
• Support architectural modernization efforts, including microservice adoption, infrastructure as code, and cloud native design patterns.
• Contribute to platform documentation, architecture diagrams, best practice guides, and engineering standards that uplift team capabilities.
• Participate in Agile team ceremonies, technical refinement, demos, code reviews, and mentoring to align platform operations with development objectives.

Qualifications Required:

• 8+ years combined experience working as a Network, Cloud, Security, Software, DevOps, DevSecOps, SRE, or Infrastructure Engineer.
• Experience developing design and standards documentation.
• Experience with technologies including Kubernetes, Kustomize, Helm, Docker, Istio, ArgoCD, GitLab, GitLab CI, Nexus, Jira, Confluence, Coder, Terraform, Ansible or equivalent/related technologies.
• Expertise with common modern programming languages (Python, Go, C++, Java, etc.).
• Experience with Azure cloud services, including networking, storage, and compute.
• Proficiency with implementing and practicing GitOps, Infrastructure as Code, and DevOps.
• Ability to maintain lifecycle of Kubernetes clusters, infrastructure, and tools.
• Proficiency with utilizing enterprise CI/CD pipelines.
• Proficient in Linux and Windows Operating Systems.
• Must be a US citizen.

Education:

• Bachelor's degree in Cybersecurity, Computer Science, Computer Engineering, or related field.

Clearance Requirements :

• Must have minimum a Secret DoD Security Clearance.
• Must be a US Citizen.

#LI-MS1 #LI-Onsite

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  Interesting Work:
  
  
  
  Our co-workers support some of the most important and critical programs to our national defense and security.
  
  
  
  
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  Values:
  
  
  
  Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.
  
  
  
  
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  100% Employee Owned:
  
  
  
  We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.
  
  
  
  
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  Great Benefits - Most Full-Time Staff Are Eligible for:
  
  
  
  
  
• Starting PTO accrual of 20 days PTO/year + 10 holidays/year
  
  
• Flexible schedules
  
  
• 6% 401k match with immediate vesting up to $9k annually
  
  
• Semi-annual bonus eligibility (July and December)
  
  
• Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account
  
  
• Up to $10,000 in annual educational reimbursement
  
  
• Other company funded benefits, like life and disability insurance
  
  
• Optional zero deductible Blue Cross/Blue Shield health insurance plan
  
  





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  Track Record of Success:
  
  
  
  We have grown every year since our founding in 1993.
  
  
  
  

Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.