Senior Software Engineer – Data Visualization

GrammaTech, Inc.

About The Position

We are seeking an experienced Software Engineer to develop advanced, web-based visualization solutions that enable users to explore and analyze large-scale Knowledge Graph data. This role focuses on building high-performance, interactive visualizations that uncover complex relationships and support mission-driven decision-making. You will work in an agile, fast-paced environment with direct customer engagement, rapidly iterating on tools and incorporating user feedback to refine analytic capabilities and visual storytelling.

Requirements

Strong experience with data visualization technologies: DOM-based: D3, SVG; Rendering-based: Canvas, WebGL, or WebGPU
Proficiency in JavaScript and/or TypeScript
Experience with React (jQuery familiarity is a plus in legacy environments)
Experience working with JSON and complex data structures
Fourteen (14) years of experience as a Software Engineer on programs of similar scope, type, and complexity
Bachelor’s degree in Computer Science or related discipline from an accredited institution OR four (4) additional years of relevant experience may be substituted for the degree

Nice To Haves

Experience integrating with mission systems or IC tools (e.g., CASPORT, CREATIVEMODE)
Python development experience
DevOps and deployment experience: Docker / Docker Compose, Podman, Nginx
Testing frameworks (e.g., Vitest, Cypress)
Experience working in classified or mission-critical environments

Responsibilities

Design and develop interactive data visualization tools using modern JavaScript frameworks
Enable exploration of complex, hierarchical, and graph-based data relationships
Build responsive, high-performance user interfaces optimized for large datasets
Prototype and implement innovative visual analytics techniques
Collaborate directly with mission users and stakeholders to gather feedback and iterate quickly
Maintain and enhance existing analytic and visualization platforms