Frontend Software Engineer — TS-Cleared, Defense Web Apps

Worky; Littleton (CO); On-site; USD 134,000 - 181,000; Full time

Benefits offered by this job

ESOP ownership

Competitive benefits

Generous PTO

Job summary

Four Sea Group is seeking a Software Engineer focused on frontend development to build accessible, reliable web applications supporting secure customer missions. You will translate complex requirements into effective digital experiences and contribute to reliable delivery within an Agile environment.

The role involves independent frontend feature delivery, backend integration, and participation in routine software releases, with an emphasis on usability, accessibility, and maintainability in a

Qualifications

• Bachelor’s degree or equivalent experience in a technical field.
• Typically four+ years of frontend software experience.
• Active TS/SCI clearance required at hire, CI Poly preferred.
• Experience building user-facing web apps with modern frontend tools and methods.
• Strong HTML5/CSS3, responsive design, and frontend frameworks experience.
• Experience with RESTful APIs and integrating frontend with backend services.
• Experience with Git-based collaboration and Agile delivery.
• Knowledge of Section 508 accessibility requirements.

Responsibilities

• Develop accessible, user-centered front-end features.
• Collaborate with backend, design, and QA to deliver software in Agile cycles.
• Translate complex user requirements into usable web interfaces.
• Ensure reliability and maintainability of frontend components.
• Identify practical open-source solutions and apply modern development practices.

Skills

Frontend web development

HTML5/CSS3

JavaScript frameworks (Angular/React)

RESTful APIs

Git/GitHub/GitLab

Agile software development

Accessibility (508)

Open-source evaluation

Communication skills

Education

Bachelor’s degree in CS/SE/CE or equivalent

Tools

Git/GitHub

Angular/React

REST APIs

Docker

Kubernetes

Jenkins

Job description

Four Sea Group is seeking a Software Engineer focused on frontend development to build accessible, reliable web applications supporting secure customer missions. You will translate complex requirements into effective digital experiences and contribute to reliable delivery within an Agile environment.

The role involves independent frontend feature delivery, backend integration, and participation in routine software releases, with an emphasis on usability, accessibility, and maintainability in a