Senior Front-end Developer Job at Eighty20 Collective, Denver, CO

  • Eighty20 Collective
  • Denver, CO

Job Description

Salary: $190,000 - 190,000 per year Requirements:

  • Active Top Secret/SCI clearance and U.S. citizenship
  • Bachelors degree in Computer Science, Software Engineering, Information Systems, or a related technical field, or equivalent relevant experience
  • At least 7 years of software development experience, including substantial hands-on work building modern web applications
  • Strong professional experience with React.js and JavaScript
  • Strong knowledge of HTML5, CSS3, responsive web development, and component-based application design
  • Experience integrating applications with REST APIs
  • Experience with Git and modern front-end development, build, and source-control practices
  • Understanding of software architecture, application design, debugging, testing, and performance optimization
  • Ability to investigate and solve complex technical problems independently
  • Experience collaborating across engineering, product, UX, and stakeholder teams
  • Strong written and verbal communication skills
  • Helpful but not required: TypeScript; Redux or other state-management approaches; automated front-end and component testing; modern React frameworks, libraries, and tooling; AWS or other cloud environments; containerized or microservices-based architectures; DevSecOps and automated delivery pipelines; GitLab and GitLab CI/CD; enterprise data services and distributed applications; GEOINT, ISR, intelligence analysis, or other national security mission systems; establishing front-end architecture, development standards, and reusable engineering patterns; mentoring or providing technical guidance to developers
  • Enjoys balancing application development with design and architecture, favors reusable and maintainable solutions, can translate complex mission and user needs into straightforward software, and works effectively both independently and collaboratively
Responsibilities:
  • Design, develop, enhance, and maintain modern web applications using React.js, JavaScript, HTML5, and CSS3
  • Turn product requirements, user workflows, and UX designs into reusable, responsive front-end components and applications
  • Integrate front-end applications with RESTful APIs, microservices, and enterprise data services
  • Help establish front-end architecture, application structure, reusable components, and development standards
  • Participate in architecture discussions, technical design, code reviews, and troubleshooting
  • Improve application performance, usability, reliability, and maintainability
  • Collaborate with back-end engineers, UX designers, product owners, and technical and mission stakeholders
  • Develop and maintain code using Git-based workflows
  • Support automated testing, build processes, CI/CD pipelines, and software releases
  • Contribute to Agile planning, development, testing, and delivery
  • Diagnose complex application and integration issues and develop practical solutions
  • Mentor developers and promote effective software engineering practices across the team
Technologies:
  • AWS
  • CI/CD
  • Cloud
  • DevSecOps
  • Git
  • GitLab
  • HTML5
  • Support
  • JavaScript
  • REST
  • React
  • Redux
  • Security
  • TypeScript
  • Web
  • microservices
  • UX UI Design
  • API
  • Frontend

More:

Were hiring a Senior Front-End Software Engineer to build modern web applications in a mission-focused environment, working closely with engineers, UX professionals, product owners, and mission stakeholders and helping shape our teams technical direction and engineering practices. This is a full-time, in-person role paying up to $190,000 per year. Benefits include a 401(k) with matching, dental, health, life, and vision insurance, a flexible schedule, paid time off, a referral program, and tuition reimbursement.

last updated 40 week of 2026

Job Tags

Full time, Flexible hours

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