Platform Engineer (FedD145)

EMPLOYER IS A CONTRACTOR FOR THE U.S. GOVERNMENT. THIS POSITION WILL REQUIRE AN ACTIVE SECRET CLEARANCE TO APPLY. Staff Platform Engineer Defense Unicorns is seeking a Senior Platform Engineer to join our team. This role is responsible for designing, building, and owning the runtime production environment that bridges applications (custom development, COTS, and OSS) to the underlying platform. You will drive platform architecture decisions, set engineering standards, and serve as the technical anchor between application teams and platform teams. This is a hands-on technical leadership role. You will own platform strategy and implementation end-to-end: defining technical roadmaps, solving complex problems that span multiple domains, driving cross-team delivery efficiency, and mentoring engineers across the team. We are looking for someone who builds and owns platforms, not someone who operates within infrastructure others have designed. Key Responsibilities Architect and maintain scalable runtime production environments across cloud-native and containerized systems, including transforming applications into Kubernetes-friendly formats for bare-metal deployment Own the technical roadmap for the platform vertical, identifying gaps, planning initiatives, and aligning engineering effort to mission objectives Provide mentorship to engineers across the team, fostering professional development and raising the technical bar Identify technical overlap across projects and guide teams on leveraging each other for efficient delivery Work closely with Mission Managers, providing insights on engineering competency, capacity, velocity, and alignment with mission objectives Collaborate with product teams, providing feedback on product fit and contributing to product direction based on production usage Work with customers to define technical roadmaps that align to mission objectives Advocate for and enforce DevSecOps practices across the platform layer, including security automa

EMPLOYER IS A CONTRACTOR FOR THE U.S. GOVERNMENT. THIS POSITION REQUIRES U.S. CITIZENSHIP. Role Description: As a Solutions Architect at Defense Unicorns, you'll serve as the primary technical point of contact during customer engagements, working closely with business development, engineering, and product teams to ensure that our offerings are both compelling and relevant to our government and defense customers. This role combines deep technical knowledge with strong communication and problem-solving skills. You’ll be responsible for delivering live product demos, maintaining infrastructure for proof-of-concept environments, and supporting the long and complex sales cycles typical in the defense sector. Your mission is to ensure that prospective customers not only understand what our technology does, but believe in what it can do for them. This is a hands-on, customer-facing role ideal for someone who thrives in fast-paced, evolving environments and is passionate about making a tangible impact on national security through technology. Responsibilities: Act as a trusted advisor for customers and their technical needs, challenges, and goals during pre-sales engagements Participate in sales calls and business development meetings, often as the primary technical contact; travel as required to support on-site engagements Discover real mission needs beyond surface-level requirements; ask probing questions to understand the core mission challenges and align our solutions accordingly Architect solutions based on potential customer requirements and articulate those solutions Maintain technical demo environments and lead live, hands-on demonstrations of our UDS Core platform and capabilities Build and deliver technical proof-of-concepts, including live installations and technical walkthroughs to validate platform capabilities in real time Support the long defense sales process by staying engaged by delivering small proof-of-concepts, follow-up demos, and ong

EMPLOYER IS A CONTRACTOR FOR THE U.S. GOVERNMENT. THIS POSITION REQUIRES U.S. CITIZENSHIP. Role Description: Defense Unicorns is seeking a Platform Engineer to join our platform team — a combined DevOps and Site Reliability Engineering team responsible for the development, maintenance, and reliability of a cloud-based platform environment. The ideal candidate is a strong problem-solver with hands-on experience in Kubernetes, cloud infrastructure, and CI/CD, and is motivated by building and improving the systems that other teams depend on. In this role, you will work across infrastructure as code, automated deployments, identity and access management, monitoring, and CI/CD pipelines. You will serve as a bridge between application teams and the platform, advocating best practices and helping ensure that the platform is reliable, secure, and scalable. You should be comfortable operating in ambiguity, contributing to documentation and standards where they exist, and building them where they don’t. Responsibilities: Build, maintain, and improve Kubernetes clusters and containerized application deployments across cloud environments (AWS, EKS, RKE2) Develop and manage infrastructure as code (IaC) to provision and configure platform resources consistently and repeatably Own and improve CI/CD pipelines, including GitLab CI configuration, runner deployments, and automated build and deployment workflows Support identity and access management through tools such as Keycloak, including user onboarding, role configuration, and troubleshooting Implement and maintain monitoring, alerting, and logging to ensure platform health and support incident investigation Manage certificate lifecycle operations, including renewal of public certificates and related automation Contribute to platform security posture through container security practices, Iron Bank image compliance, and support for ATO processes Collaborate with application teams to troubleshoot deployment issues, broke

About Stitch Fix, Inc. Stitch Fix (NASDAQ: SFIX) Stitch Fix is redefining retail by combining human creativity with advanced data science and Generative AI. As we build the future of personalized shopping, we’re equally committed to building yours. We believe in investing in our team as much as our technology. Join us to be a trendsetter in the industry and help us redefine what’s possible for our clients, while we help you reach your full potential. About the Role As a Platform Engineer, you will contribute to building and improving Stitch Fix’s cloud-native infrastructure and internal developer tooling. You’ll work on tools and automation that help product engineers deploy, operate, and debug services more easily, while learning modern platform engineering practices alongside experienced teammates. This role is ideal for engineers who enjoy improving developer experience and want to grow their skills in cloud infrastructure and CI/CD systems. Responsibilities: Contribute to the development and evolution of our internal platform-as-a-service used by application and service developers Build and maintain tooling that improves developer workflows, deployment reliability, and day-to-day productivity Collaborate with platform and application engineers to identify friction points and implement incremental improvements Learn and apply best practices around Infrastructure-as-Code, containerized workloads, and CI/CD pipelines Use, or are eager to adopt, AI-assisted development tools to improve productivity, and are excited to help explore and integrate LLM-powered solutions that automate internal support and operational workflows Have opportunities to propose ideas and improvements, with support and mentorship from the team Things you’ll get exposure to (and we don’t expect experience with everything): AWS Terraform, Pulumi CircleCI Docker, ECS, EKS Ruby, Golang, Python About You 2+ years of software development and infrastructure experience with significant contribut

EMPLOYER IS A CONTRACTOR FOR THE U.S. GOVERNMENT. THIS POSITION REQUIRES U.S. CITIZENSHIP. Role Description We are seeking a talented and experienced Platform Engineer to join our team. Possessing strong proficiency with Kubernetes, the ideal candidate will play a crucial role in the development and maintenance of our platform, demonstrating a strong understanding of system architecture, problem-solving skills, and the ability to guide junior engineers. As a Platform Engineer within our organization, you will join a team of dedicated unicorns who are focused on advancing freedom and independence globally. Our teams work on various different technical baselines depending on specific engagements. We focus our Products on the Platform layer, but to deliver for our Heroes, we also work IaC automation, security, and implementation. Responsibilities You will help us automate and build a runtime Production Environment and serve as a link between the Applications, either custom development, COTS, or OSS, and that environment, advocating best practices and facilitating communication between the application teams and platform teams. In this position, you will be expected to: Validate Solutions/Implementations: Ensure that solutions and implementations align with the outlined tasks and business requirements. Conduct thorough validations to maintain the integrity and efficiency of the platform. Independently Problem Solve: Demonstrate the ability to identify and solve business problems independently. Develop small components to address specific challenges without relying on explicit architecture diagrams. Understand Medium-Level Tasking: Comprehend how medium-level tasks contribute to the achievement of overall goals. Collaborate with cross-functional teams to integrate various components into a cohesive and functional platform. Estimate Time and Effort: Provide accurate time and effort estimates for medium-sized tasks. Assist in project planning and resource allocation based o

About the Role As a Platform Engineer at Metis, you’ll join a small, product-driven engineering team building modern infrastructure that powers critical workflows for our own training platform. You’ll own projects end-to-end, designing, building, and shipping production systems that directly impact customers. You’ll write production-grade code, reason about systems holistically, and make decisions that tie directly to business outcomes. You will be moving fast while upholding a high bar for code quality, scalability, and simplicity. What You’ll Do Help scale and work on a core part of our Mantis Platform Helping to optimize our training stack, work on expanding platform scalability and functionality Write code and leverage AI tools effectively to get the highest quality of work done in the fastest time Requirements Strong coding fundamentals in at least one modern language (Python, Go, Rust, etc.). Ability to break down ambiguity and ship simple solutions to complex problems. Familiarity with system-design, general coding practices in terminal, and high level thinking Compensation & Benefits Base: $150,000–$850,000 Significant Equity Full medical, dental, and vision Wellness & L&D stipend Equinox membership Breakfast, lunch, and dinner provided (Unlimited Doordash) $25,000 housing stipend About Metis Metis helps enterprises and labs build the most reliable AI agents by leveraging post-training. Our platform enables the creation, improvement, and deployment of the most capable frontier agents designed for rigorous, real-world workflows. Momentum 0 → six-figure monthly revenue in the last six weeks Working with several Fortune 500 enterprises & frontier AI labs Growing 150%+ MoM Backed by Y Combinator, CRV, and executives from OpenAI, Google, Mercor, NVIDIA, and others.