Senior Full Stack Software Engineer (TS/SCI)

Integrate•Seattle, WA

12h•Onsite

About The Position

Integrate is a Seattle-based company building multiplayer project management software for the world’s most ambitious machines. We focus on the hardest coordination problems in deep tech like rocket launches and advanced manufacturing, where progress depends on seamless collaboration across companies. Increasingly, this work sits at the intersection of two of the most consequential forces shaping the modern world: defense and artificial intelligence, where both the pace of innovation and the stakes of execution are exceptionally high. Integrate enables teams to collaborate with vendors, customers, and partners as fluidly as modern tools support internal teams. Our mission is to modernize how organizations build together in the emerging deep tech economy, reducing friction, misalignment, and unnecessary work at every step. Traditional project management tools weren’t designed for the speed, scale, and interdependence of modern hardware development. Integrate is purpose-built for this new reality. We provide a platform that brings clarity and structure to complex, cross-organizational programs helping teams communicate effectively, stay aligned, and move faster with confidence. By improving how critical information is shared and decisions are made, we enable organizations to focus on what matters most: building the future. We're hiring a Full Stack Engineer to help us build and evolve the product layer of Integrate's platform. This role spans the full stack — from React-based UI surfaces to Go APIs and the integrations that tie them together — and sits at the center of where our product meets our users. The near-term focus includes feature work on our cross domain solution workflows, improving how we surface complex project data to end users, and contributing to the API and integration services that sit beneath it. You'll work closely with product, design, and backend engineers to ship things that matter — and you'll be expected to care about the quality and craft of what you build. A meaningful part of this role is operating with a Top Secret clearance. Integrate's platform is built to run across classification levels — including NIPR, SIPRnet, SAP networks, to JWICS — and the programs we support don't always surface their full complexity in unclassified environments. Having clearance means being in the room when the full picture is visible: understanding the mission constraints, threat variables, and program complexities that drive real requirements but rarely make it into a ticket. For an engineer building coordination software for defense programs, that context isn't a nice-to-have — it's the difference between shipping features and shipping the right features. We're a small team. There's no handoff culture here. If you build it, you own it.

Requirements

3–5+ years of full stack engineering experience in a product-focused environment
Strong React fundamentals — component architecture, state management, and performance; Apollo Client familiarity is a plus
Solid HTML5 and CSS3; able to build clean, responsive interfaces without leaning on a framework crutch
Go on the backend — REST API development, middleware, and service patterns
PostgreSQL — comfortable with schema design, query writing, and migrations
GraphQL — can read and reason about a resolver, understands n+1 patterns and common pitfalls; bonus if you've worked with complex or graph-structured data models
Familiarity with integration patterns — webhooks, third-party API design, or similar
Some exposure to broader backend concerns: caching, rate limiting, or async processing
GitHub Actions or similar CI/CD tooling
Active TS or TS/SCI clearance.
US person status (including US citizens, U.S. permanent residents, individuals granted U.S. asylum status, or individuals admitted in U.S. refugee status)

Nice To Haves

Background in B2B SaaS, defense tech, or complex enterprise environments is a plus
Comfort working in a product and architecture that's still taking shape
Apollo Client familiarity
Comfort working in a product and architecture that's still taking shape

Responsibilities

Build and iterate on React-based UI surfaces that make complex project workflows legible and fast for end users
Design and maintain REST APIs and GraphQL layers in Go, working across internal and external consumers
Own and evolve data models in PostgreSQL — schema design, query optimization, and migration management
Contribute to our GraphQL integration layer, ensuring resolvers are well-structured and performant
Build and maintain integration services in Go that connect internal systems and external APIs, owning the full contract from interface design to error handling and observability.
Write and maintain CI/CD pipelines using GitHub Actions including build, test, and deployment stages across environments.
Ship clean, tested, maintainable code across the stack — and leave things better than you found them