Principal Platform Engineer jobs in Herndon – Browse 65 openings on RoboApply Jobs

Principal Platform Engineer jobs in Herndon

Open roles matching “Principal Platform Engineer” with location signals for Herndon. 65 active listings on RoboApply Jobs.

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Clarity Innovations logo
Principal Platform Engineer

Clarity Innovations

Full-time|On-site|Herndon, VA

About Clarity Innovations Clarity Innovations supports national security by building solutions for the Intelligence Community (IC) and Department of Defense (DoD). The company’s platform modernizes data operations with advanced workflows, CI/CD, and secure DevSecOps practices. Teams address challenges in Information Warfare, Cyber Operations, Operational Sec…

Apr 14, 2026
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Clarity Innovations logo
Full-time|On-site|Ft. Meade OR Herndon, VA

Clarity Innovations stands as a trusted partner in national security, committed to protecting our nation's interests while delivering inventive solutions that empower the Intelligence Community (IC) and the Department of Defense (DoD). Our mission is to transform data into actionable intelligence, ensuring mission success in an ever-changing landscape.Our mission-first software and data engineering platform modernizes data operations by harnessing advanced workflows, CI/CD, and secure DevSecOps practices. We tackle challenges in Information Warfare, Cyber Operations, Operational Security, and Data Structuring, facilitating end-to-end solutions that generate significant operational impact.We are devoted to providing state-of-the-art tools and capabilities to address the most intricate national security challenges, enabling our partners to stay ahead of emerging threats and ensuring the success of their critical missions. At Clarity, we prioritize our people and aim to be the destination for top talent, fostering an environment where innovation flourishes, careers develop, and individuals are respected. Join us as we lead innovation and confront the pressing challenges of national security.

Apr 2, 2026
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ATPCO logo
Full-time|On-site|Herndon

The Principal Software Engineer at ATPCO takes a central role in shaping software solutions and designing reliable applications. Based in Herndon, this position calls for strong technical leadership and a thorough grasp of software development and design principles. Role overview This engineer leads complex projects from the earliest planning stages through deployment. The role includes architecting software, setting technical direction, and ensuring the team delivers high-quality results. Key responsibilities Work closely with cross-functional teams to gather and define technical requirements Mentor junior developers and support their professional growth Promote best practices in coding and design throughout the team Contribute to improvements in product functionality and performance Requirements Extensive experience in software development and application architecture Proven ability to lead projects from concept to deployment Strong understanding of design principles and coding standards Experience collaborating with diverse technical and business teams

Apr 28, 2026
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Clarity Innovations logo
Principal AI Engineer

Clarity Innovations

Full-time|On-site|Herndon, VA

Clarity Innovations delivers mission-driven software and data engineering for the Intelligence Community and Department of Defense. The company specializes in transforming complex data into actionable intelligence, focusing on information warfare, cyber operations, operational security, and data structuring. Based in Herndon, VA, Clarity Innovations encourages innovation and career growth for its team members. Role overview The Principal AI Engineer joins the AI Enablement Team to advance the operationalization, security, and maturity of artificial intelligence capabilities within the Joint Development Environment (JDE) and other operational platforms. This position focuses on building and maintaining the AI path-to-production, ensuring the technical stack remains stable and scalable for a range of mission environments and development spaces supporting cyber tools and capabilities. The main project centers on establishing a unified AI infrastructure, providing consistent access to models and inference through a single, evolving AI run stack. Key responsibilities Operationalize and secure AI capabilities within JDE and additional environments. Build and maintain the AI path-to-production for mission-critical tools. Ensure the AI technical stack is scalable and stable across multiple operational and development spaces. Support integration of AI models and inference for various cyber capabilities. Work with the AI access platform to centralize API management and streamline workflows. Project focus This initiative delivers a unified interface for AI model access, supporting both local open-source models and cloud-managed models such as AWS Bedrock and Azure OpenAI. The aim is to integrate AI tools and frameworks into user workflows, from general content creation to advanced AI-driven development. The Principal AI Engineer helps simplify and centralize AI access and management for users. Location Herndon, VA (On-site) Experience level 6-10 years of experience Security clearance TS/SCI required

Apr 27, 2026
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Clarity Innovations logo
Principal Software Engineer

Clarity Innovations

Full-time|On-site|Herndon, VA

At Clarity Innovations, we are a dedicated national security partner committed to safeguarding our nation’s interests. We deliver innovative solutions that empower the Intelligence Community (IC) and the Department of Defense (DoD) to transform data into actionable intelligence, ensuring mission success in a rapidly changing world.Our mission-driven software and data engineering platform modernizes data operations through advanced workflows, continuous integration/continuous deployment (CI/CD), and secure DevSecOps practices. We tackle challenges in Information Warfare, Cyber Operations, Operational Security, and Data Structuring, enabling comprehensive solutions that drive significant operational impact.We are passionate about delivering state-of-the-art tools and capabilities that confront the most complex national security challenges, providing our partners with the means to stay ahead of emerging threats and ensuring the success of their critical missions. At Clarity, we prioritize our people and strive to be a destination employer for top talent, fostering an environment where innovation flourishes, careers advance, and individuals are respected. Join us as we continue to lead innovation and address the most pressing challenges in national security.Position OverviewThis role is part of a dynamic team at the cutting edge of developing crucial components for a next-generation distributed cyber network operations platform, offering novel solutions to the challenges faced by cyber missions at scale. You will play a key role in contributing to the core messaging framework that facilitates intra-platform orchestration. Your contributions will include designing and implementing microservices developed in Python and Go, containerized with Docker images and deployed within a Kubernetes cluster. A successful developer in this role will possess a wide array of experiences, including secure networking practices such as implementing mTLS at both the application and service-mesh layer, utilizing gRPC for intra-process communications, and debugging GraphQL APIs. This position also provides unique opportunities for engagement with our customers and end-user groups to help refine and enhance functionality.The ideal candidate will take pride in their work and strive for excellence in all endeavors. They are motivated by challenges and actively seek out complex problems that push them beyond their comfort zone. They understand that the mission we support transcends any one individual and has a profound impact on our country’s national security. Our team dynamic is relational, humble, and dedicated to excellence. We take responsibility for our mistakes promptly, consider how our work affects the personal lives of our teammates, and refuse to settle for mediocrity.

Apr 1, 2026
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clarityinnovates logo
Senior Platform Engineer

clarityinnovates

Full-time|On-site|Herndon, VA

clarityinnovates is hiring a Senior Platform Engineer in Herndon, VA. This position plays a key role in building and maintaining the core technology infrastructure that supports daily operations. Responsibilities Design, develop, and maintain scalable platform solutions that address business requirements Collaborate with teams throughout the company to integrate new technologies effectively Apply best practices to system architecture and software development Provide guidance to team members on optimizing system performance Contribute to the delivery of reliable, high-quality products Collaboration This role involves frequent work with cross-functional teams to ensure technology solutions support company objectives and run efficiently.

Apr 24, 2026
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ATPCO logo
Internship|Hybrid|Herndon

Join us as a Platform Engineer Intern at ATPCO, where you will have the opportunity to work on innovative projects in a hybrid work environment. This internship will provide you with hands-on experience in developing and optimizing platform solutions, while collaborating with a talented team. Ideal for aspiring engineers looking to make an impact in the tech industry.

Apr 8, 2026
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Clarity Innovations logo
Full-time|On-site|Herndon, VA

At Clarity Innovations, we are a premier national security partner committed to protecting our nation's interests by providing cutting-edge solutions that empower the Intelligence Community (IC) and the Department of Defense (DoD). Our innovative approach transforms data into actionable intelligence, which is crucial for ensuring mission success in a rapidly changing landscape.Our mission-driven software and data engineering platform modernizes data operations through advanced workflows, Continuous Integration/Continuous Deployment (CI/CD), and secure DevSecOps practices. We tackle challenges related to Information Warfare, Cyber Operations, Operational Security, and Data Structuring, delivering comprehensive solutions that create significant operational impact.We are passionate about providing state-of-the-art tools and capabilities to address complex national security challenges, helping our partners stay ahead of emerging threats and ensuring their critical missions succeed. At Clarity, our people are our greatest asset, and we strive to be an employer of choice for top talent, fostering an environment where innovation flourishes, careers progress, and individuals are respected. Join us in leading the way in innovation and confronting the most urgent challenges in national security.Position OverviewThe DANDIE (Data Acquisition Network for Delivery, Ingestion and Exploitation) program is an initiative designed to serve as a strategic data platform for streamlining the procurement, onboarding, consumption, and offboarding of CAI / PAI datasets, effectively enabling OCO missions. Built on open-source software (OSS), Commercial Off-The-Shelf (COTS), and Government Off-The-Shelf (GOTS) components and deployed on Kubernetes, DANDIE is poised to support batch, streaming, and QiP cross-domain data workflows while becoming the enterprise data hub for Cyber Command.In this pivotal role, you will be responsible for developing the platform and data lake architecture blueprint for DANDIE, ensuring seamless integration of OSS, COTS, and GOTS components on Kubernetes, and establishing patterns that facilitate brokerage, metrics, transport, and secure operations. Your design will form the backbone of a platform intended to scale across Cyber Command’s data ecosystem.

Apr 2, 2026
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Clarity Innovations logo
Full-time|Hybrid|Herndon, VA

Clarity Innovations supports the Intelligence Community and Department of Defense by building software and data engineering platforms focused on national security. The Senior Platform Engineer - Cyber Operations Specialist role centers on developing and maintaining secure, mission-driven solutions that help transform large data sets into actionable intelligence. This position involves work across Information Warfare, Cyber Operations, Operational Security, and Data Structuring. The team uses advanced workflows, CI/CD pipelines, and DevSecOps practices to deliver end-to-end solutions with real operational impact. What you will do Design, build, and support secure software platforms for national security missions Implement and optimize CI/CD and DevSecOps workflows Address complex challenges in cyber operations and information warfare Collaborate with engineers and mission partners to deliver solutions that meet evolving security needs What sets Clarity Innovations apart Focus on impactful projects supporting critical government missions Commitment to fostering innovation and career growth Culture that values each individual’s contributions

Apr 28, 2026
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ATPCO logo
Internship|Hybrid|Herndon

Join our dynamic team as a Platform Engineering Intern specializing in AI & Data Enablement. This hybrid internship offers a unique opportunity to work at the intersection of technology and data, contributing to projects that drive innovation in the travel industry. Collaborate with experienced professionals, gain hands-on experience, and enhance your skills in a supportive environment.

Apr 8, 2026
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ATPCO logo
Full-time|On-site|Herndon

As a Principal Support Analyst at ATPCO, you will play a pivotal role in ensuring exceptional customer service and operational excellence. You will leverage your extensive expertise to troubleshoot complex issues, provide advanced technical support, and enhance user experience. Your strategic insights will inform process improvements, driving efficiency and effectiveness within our support teams.

May 1, 2026
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North Point Technology logo
Full-time|On-site|Herndon, Virginia, United States

Active TS/SCI clearance with a CI Polygraph is required for this position. Applications without this clearance cannot be considered. North Point Technology is hiring a DevOps Engineer to support its Data Centric-Multi-Level Secure (DC-MLS) Enterprise team in Herndon, Virginia. This role centers on Linux automation, secure platform deployment, and operational support for DC-MLS, high-performance computing (HPC), and other mission-focused programs. What you will do Design, improve, and maintain DevOps automation processes for DC-MLS Enterprise deployments and site setups. Develop and manage workflows for deploying, configuring, and operating Linux-based systems in secure environments. Build and maintain automation and scripting solutions to streamline provisioning, enable repeatable deployments, and strengthen platform reliability. Use configuration management and version control tools to handle changes, support releases, and drive consistency in deployments. Work closely with enterprise and core teams to support DC-MLS implementations across HPC and other contract settings. Requirements Active TS/SCI clearance with a CI Polygraph Strong experience with Linux environments and automation Background in deploying and supporting secure platforms

Apr 23, 2026
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dstaff logo
Full-time|On-site|Herndon

Join our dynamic team at dstaff as a Principal Threat Analysis Engineer. In this vital role, you will leverage your expertise to identify, analyze, and mitigate potential threats to our systems and data. Your contributions will be crucial in ensuring the security and integrity of our technology infrastructure.Your responsibilities will include conducting comprehensive threat assessments, collaborating with cross-functional teams, and developing innovative security solutions. You will be at the forefront of protecting our organization against evolving cyber threats.

May 3, 2015
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Clarity Innovations logo
Full-time|On-site|Herndon, VA

At Clarity Innovations, we are dedicated to protecting our nation's interests through innovative solutions that empower the Intelligence Community (IC) and the Department of Defense (DoD). We transform data into actionable intelligence, ensuring mission success in a rapidly changing world.Our mission-first software and data engineering platform revolutionizes data operations by employing advanced workflows, continuous integration/continuous deployment (CI/CD), and secure DevSecOps practices. We tackle challenges in Information Warfare, Cyber Operations, Operational Security, and Data Structuring, creating end-to-end solutions that yield significant operational impact.We pride ourselves on delivering state-of-the-art tools and capabilities that confront the most complex national security challenges, enabling our partners to stay ahead of emerging threats and guaranteeing the success of their critical missions. At Clarity, we prioritize our people and strive to be a destination employer for top talent, fostering an environment where innovation flourishes, careers advance, and individuals are valued. Join us in our mission to lead innovation and address pressing national security challenges.Company OverviewClarity Innovations is a technology firm committed to equipping clients with the capabilities and support necessary for conducting intelligent and effective cyber operations. We achieve this by attracting the brightest engineers and operators across the nation, presenting them with some of the most challenging problems faced by the U.S. government, and nurturing their creativity and problem-solving skills. Our standard is excellence, and our metric is mission success.RoleAs a Principal Cyber Network Operations Engineer, you will be the technical leader responsible for developing and integrating specialized cyber tools within our core platform. This position requires a "player-coach" approach, where you will oversee the implementation of intricate CNO features while ensuring their seamless integration with both the platform infrastructure and the end-user workflow. You will act as the primary technical resource for CNO tool lifecycle management, from initial prototyping to final integration for users.ResponsibilitiesDevelopment & CNO IntegrationLead the creation of high-performance CNO tools using programming languages such as C, Python, and Go, ensuring they are optimized for compatibility with our platform.Drive the integration of CNO tools, focusing on how backend capabilities connect with the broader platform architecture to facilitate reliable delivery and execution.Conduct reverse engineering using tools like Ghidra, IDA, or Binary Ninja to inform tool development and integration processes.

Apr 13, 2026
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North Point Technology logo
Full-time|On-site|Herndon, Virginia, United States

Active Top Secret clearance is required for this role. Applications without this clearance cannot be considered. North Point Technology seeks a Full Stack Platform Engineer with hands-on experience in Angular, Spring, and Kubernetes. This position supports the deployment, security, and operation of GEOINT visualization services, providing on-demand access to critical data and products for Federal Government clients. What you will do Design and develop dynamic front-end applications using JavaScript or TypeScript, with a primary focus on Angular frameworks. Create and maintain backend services and APIs with Java Spring Framework, and use Python when needed. Deploy and manage applications in Kubernetes environments, utilizing Docker containers to ensure scalability and high availability. Handle configuration, performance tuning, and troubleshooting within Linux or RHEL systems. Implement CI/CD pipelines and manage version control using Git. Support Agile workflows by aligning development with JIRA and Confluence for project tracking and documentation. Monitor system health and performance using Zabbix, identifying and resolving issues proactively. Work closely with other engineering teams to improve system architecture, strengthen security, and boost operational efficiency. Requirements Active Top Secret clearance Proficiency with Angular, Java Spring Framework, Kubernetes, and Docker Experience with Linux/RHEL systems Familiarity with CI/CD pipelines, Git, JIRA, Confluence, and Zabbix Background in supporting Federal Government projects is a plus

Apr 24, 2026
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Clarity Innovates logo
Full-time|On-site|Herndon, VA

Join Clarity Innovates as a Principal Security Researcher and lead groundbreaking initiatives in cybersecurity. As a pivotal member of our team, you will be at the forefront of identifying vulnerabilities, analyzing security threats, and developing innovative solutions to enhance our security posture.

Apr 8, 2026
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StemXpert logo
Full-time|On-site|Herndon

Join StemXpert as a Release & Build Engineer, where you will play a critical role in our software development lifecycle. You will be responsible for designing, implementing, and managing the release and build processes to ensure efficient and reliable software delivery. This position involves collaborating with cross-functional teams to streamline operations, troubleshoot issues, and maintain high standards of quality.

Sep 11, 2014
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Holder Construction Company logo
BIM/VDC Engineer

Holder Construction Company

Full-time|On-site|Herndon, VA

About UsHolder Construction Company is a prestigious leader in the construction sector, consistently recognized among the top firms on ENR’s Top 400 Contractors list. We pride ourselves on being a performance-oriented organization that values excellence and invests in the growth of our employees. Our comprehensive career development program is designed to help associates advance swiftly into greater roles based on their merits.With operations nationwide, we provide a competitive compensation and benefits package that includes:Annual bonus programPaid time offHealth, dental, vision, and life insurance401(k) retirement planNight and swing shift differential pay for select rolesAbout the RoleWe are seeking a skilled BIM/VDC Engineer to join our Virtual Design & Construction team for our project in Herndon, VA. This is a full-time, on-site position.

Apr 2, 2026
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Flex Staffing Resources logo
Security Development Engineer

Flex Staffing Resources

Full-time|Hybrid|Herndon

The Security Development Engineering position is an integral part of our SecDevOps team, dedicated to bridging the gap between Security and Engineering. This hybrid role requires on-site participation for specific activities such as training, assessments, and team meetings.As a senior-level security development engineer, you will act as a key technical liaison for security-related engineering initiatives. You will collaborate closely with security engineering, operations, and build teams, assisting the Governance, Risk, and Compliance (GRC) Control Assurance and Security Operations Center (SOC) Vulnerability Management teams in the initial triage of vulnerabilities. Your expertise will guide the creation of actionable items for operations and facilitate escalations to Product or Cloud teams as necessary.In this role, you will review responses from team members, ensuring comprehensive consideration for the final lists. You will also support various assessments and audits by participating in interviews and managing escalations related to operational and engineering concerns. Your role may involve providing guidance on how security controls are implemented through automation and configurations, as well as gathering evidence for assessors. Additionally, you will oversee the remediation process for vulnerabilities and findings, ensuring swift and effective resolutions. We seek a candidate who can begin work promptly based on their experience and is ready to engage with our processes and procedures with oversight provided as necessary.

Apr 30, 2023
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Northstrat logo
Full-time|On-site|Herndon, Virginia, United States

As an Operations Systems Engineer at Northstrat, you will play a pivotal role in enhancing our operational capabilities by designing, implementing, and optimizing systems that support our diverse projects. This position requires a keen analytical mind and a passion for problem-solving, as you will be tasked with ensuring that our systems operate efficiently and effectively.

Mar 26, 2026

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