Senior Frontend Engineer — Arlington, VA

Senior Frontend EngineerLocation: Arlington, VA (Hybrid)

Employment Type: Full-time

Compensation: $150,000–$200,000 base + bonus + stock options

Build sophisticated geospatial applications for mission-critical environments.Gj5ygDZPcy is an AI and optimization company developing advanced software systems for complex operational environments.

We are seeking a Senior Frontend Engineer with strong experience in React, TypeScript, and geospatial application development to help build our next generation of software products.

This is a hands-on engineering role for someone who enjoys developing complex, interactive applications, solving challenging technical problems, and building software that supports real-world defense and national security missions.

You will work closely with our engineering and AI/ML teams to develop high-performance, intuitive interfaces for sophisticated geospatial applications.

What You'll Do• Design, develop, and maintain sophisticated web applications using React and TypeScript.

• Build interactive geospatial interfaces using modern mapping and visualization libraries.

• Develop responsive, high-performance interfaces for complex, data-intensive applications.

• Build multi-user applications that support shared state, real-time updates, and concurrent interactions.

• Integrate geospatial data, REST APIs, and real-time data streams into frontend applications.

• Optimize rendering performance, responsiveness, and usability.

• Develop reusable UI components and contribute to frontend architecture and engineering standards.

• Collaborate with backend, AI/ML, and product teams to deliver integrated software capabilities.

• Participate in technical design discussions, code reviews, and testing.

Required Qualifications• 5+ years of professional frontend software engineering experience.

• Strong proficiency in React, TypeScript, JavaScript, HTML, and CSS.

• Professional experience developing interactive geospatial or mapping applications.

• Hands-on experience with deck.gl, MapLibre, Mapbox, MapTiler, or comparable web mapping and visualization technologies.

• Understanding of geospatial data formats, coordinate systems, map layers, and rendering techniques.

• Experience developing multi-user applications, including shared application state, real-time synchronization, and concurrent user interactions.

• Experience building complex, data-intensive, or real-time web applications.

• Strong understanding of frontend architecture, performance optimization, component design, and state management.

• Experience integrating REST APIs and Server-Sent Events (SSE) with backend services.

• Ability to work independently and collaborate effectively with engineering teams.

• Legally authorized to work in the United States.

• Ability to obtain and maintain a U.S. government security clearance.

Preferred Qualifications• Experience developing geospatial applications for military, defense, intelligence, or national security environments.

• Experience with military symbology standards such as MIL-STD-2525 or APP-6.

• Advanced experience with deck.gl, WebGL, or GPU-accelerated visualization.

• Experience building interactive 3D geospatial visualizations.

• Experience with real-time data visualization using WebSockets or similar streaming technologies.

• Experience designing collaborative user experiences, including synchronization, conflict handling, and consistency across multiple clients.

• Experience working with large-scale geospatial datasets, vector tiles, or raster data.

• Experience with reusable UI component libraries and design systems.

• Backend development experience with Rust.

• Experience with PostgreSQL and backend API development.

• Experience with AWS, Azure, Docker, or cloud-native applications.

• Experience developing user interfaces for AI/ML, analytics, or optimization systems.

• Active or previously held U.S. government security clearance.

Why Join Gj5ygDZPcy?Meaningful Technical Ownership

Take an active role in developing sophisticated software and influencing frontend architecture and design decisions.

Challenging Engineering Problems

Work on complex geospatial and multi-user applications that require strong engineering judgment, performance optimization, and thoughtful user experience design.

Mission-Driven Technology

Build advanced software capabilities supporting defense and national security missions.

Hands-On Engineering

Work alongside experienced engineers in a collaborative environment where technical excellence and ownership matter.

Compensation & BenefitsBase Salary: $150,000–$200,000 annually, depending on experience and qualifications.

Eligible employees may also receive:

• Performance bonuses and stock options

• Health, dental, and vision coverage

• Flexible hybrid work environment

• Significant technical ownership

• Opportunities for professional growth

Location & Work AuthorizationThis is a hybrid position based in Arlington, Virginia. Candidates must live in or be willing to relocate to the Washington, DC metropolitan area.

Candidates must be legally authorized to work in the United States and able to obtain and maintain a U.S. government security clearance. Additional eligibility requirements may apply.

Equal Opportunity EmployerBluJuniper is an equal opportunity employer. We consider qualified applicants without regard to race, color, religion, sex, national origin, age, disability, veteran status, or any other characteristic protected by applicable law.