Top Secret Full Stack Engineer

STR is seeking an experienced Full Stack Engineer to design and deliver high-impact web applications for defense and intelligence missions. The successful candidate will build AI- and data-centric applications that help users analyze information, make decisions, and work effectively with advanced software systems. These are not corporate websites or marketing pages. They are mission-focused applications built for real operational and analytical use. We are seeking candidates ranging from experienced developers to technical leads; this is not an entry-level role.

The Role

Develop on a new development effort through stages of design, implementation, and demonstration. This role will be hybrid with a target of 2 days in either our Woburn, MA or Arlington, VA office. Specific responsibilities include:

Front-End and User Experience
Build modern, responsive, and reusable web applications using React and related front-end technologies.
Translate wireframes, prototypes, and design direction into production-ready interfaces with strong attention to usability and detail.
Contribute to early-stage interface thinking, workflow definition, and design iteration in close collaboration with designers and stakeholders.
Develop efficient, high-performance components for data visualization and user interaction, including large data sets and complex mission workflows.
Deliver intuitive, user-centric and data-centric interfaces for mission-focused applications.
Partner closely with designers, engineers, program leads, and end users to refine workflows, requirements, and interaction patterns.
Help shape reusable component libraries, patterns, and front-end foundations that can be used across programs.
Communicate with the project team, users, and clients to develop and document requirements.
Back-End and Integration
Design and implement APIs, application state, and supporting back-end services needed for user-facing features.
Design the interface layer to the rest of the back end, including appropriate GraphQL solutions.
Contribute to service and back-end architecture decisions for application workflows, data access, and system integration.
Design service contracts, data flows, and backend integration patterns.
Work across the full request/response path from user interaction through service logic and data access.
Integrate front-end applications with supporting services and application back ends.
Support containerized application design and deployment where appropriate.
Help design, integrate, and implement AI-enabled user interfaces and workflows that allow users to interact effectively with advanced analytics, automation, and decision-support capabilities.
Contribute to data visualization, interactive workflows, and complex interface behavior for mission-focused applications.
Delivery and Teaming
Improve application performance, responsiveness, accessibility, and maintainability.
Optimize applications for speed and responsiveness across a variety of devices and browsers.
Support demonstrations, user feedback cycles, iteration, and transition from prototype to deployed capability.
Contribute to technical documentation and communicate design and implementation decisions clearly.
Assist in the authorship of software documentation such as user training guides.

Who You Are

Core Requirements
S. Citizen with a Top Secret SCI-eligible security clearance.
Bachelor’s degree in related field or equivalent experience
5+ years of experience building modern web applications that are interactive, data-centric, and responsive across browsers and devices.
Front-End and User Experience
Strong experience with React, JavaScript/TypeScript, HTML, and CSS and at least one of: Flask, Django, Node, Vue.
Demonstrated ability to turn design direction, mockups, prototypes, or component libraries into production UI.
Experience collaborating closely with designers, users, product owners, or other stakeholders to improve workflow and usability.
Good judgment around interaction design, interface clarity, and user experience.