Principal Platform Engineer

Modern Technology Solutions, Inc. (MTSI); Dayton (OH); Hybrid; USD 140,000 - 170,000; Full time

Job summary

Modern Technology Solutions, Inc. (MTSI) in Dayton, OH seeks a Principal Platform Engineer to design, implement, and sustain secure, scalable platform capabilities across cloud-native and on-prem environments.

You will lead containerized, distributed systems with strong Kubernetes, Docker, and CI/CD expertise, integrating PostgreSQL, Neo4j, OpenSearch, and Spark. You will mentor engineers, drive Agile practices, and collaborate with software, UX, QA, and product teams to deliver maintainable

Qualifications

• 8+ years combined experience across network, cloud, security, software, DevOps, or infrastructure engineering.
• Experience developing design and standards documentation.
• Proficiency with Kubernetes, Docker, Istio, GitOps, IaC, and CI/CD tooling.
• Strong programming experience (Python, Go, C++, Java, etc.).
• Experience with Azure cloud services and cloud-native patterns.

Responsibilities

• Deploy and maintain Azure Kubernetes Service deployments, Helm, Istio, ArgoCD, and CI/CD pipelines.
• Build, configure, and optimize CI/CD pipelines and automated workflows.
• Integrate and sustain platform components such as PostgreSQL, Neo4j, OpenSearch, Spark.
• Diagnose issues across clusters, containers, databases, and application layers.
• Support modernization efforts including microservices and infrastructure as code.
• Contribute to platform documentation, diagrams, and engineering standards.
• Mentor engineers and participate in Agile ceremonies.

Skills

Collaboration

Communication

Agile leadership

Problem solving

Adaptability

Security mindset

Education

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

Tools

Kubernetes

Kustomize

Helm

Docker

Istio

ArgoCD

GitLab CI

Nexus

Jira

Confluence

Coder

Terraform

Ansible

Python

Go

C++

Java

Azure

Job description

Modern Technology Solutions, Inc. (MTSI) is searching for a Principal Platform Engineer located in Dayton, Ohio.

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 mission‑focused software delivery across cloud‑native and on‑premise 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 high‑performing environments by deploying and integrating databases, search tools, and platform services such as PostgreSQL, Neo4j, OpenSearch, and Spark. You will take a hands‑on role in improving platform automation, evolving microservice architectures, and strengthening infrastructure‑as‑code 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.