Front-End Developer

E-Infosol LLC

$90K — $120K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Active Top-Secret clearance with potential for SCI/CI Poly
  • Bachelor's Degree in Information Technology or related field
  • Minimum 8 years of general experience
  • 3 years specific to front-end application development using React, Node.js, JavaScript, and TypeScript
  • Hands-on experience with HTML, CSS, and responsive design techniques
  • Proficient in REST APIs and data formats JSON/XML
  • Familiarity with Node.js and AWS cloud environments

Responsibilities

  • Build responsive, high-performance user interfaces using modern technologies
  • Develop modular, maintainable UI components
  • Integrate front-end applications with backend services via REST APIs
  • Implement client-side state management and optimize rendering
  • Collaborate with UX/UI designers and backend engineers for seamless functionality
  • Conduct code reviews and ensure coding standards are met
  • Troubleshoot UI issues across different environments and browsers

Benefits

  • 100% company paid medical premiums for employees, with dependent options
  • Dental and vision coverage
  • 401k retirement savings plan with up to 4% match
  • Health Savings Account (HSA), FSA, and DCFSA
  • Company-paid short/long-term disability and life insurance
  • Generous paid time off and all 11 federal holidays
  • Legal and identity protection services
  • Bonuses for certifications and reimbursement options
  • Employee perks including company outings and service discounts
Full Job Description
PID: 26-14-09P-032-WSU

Summary

E-INFOSOL LLC is seeking a highly motivated Front-End Developer to be a full-time employee in Washington, DC to join our innovative and customer solutions focused team.

Job Description

The Front-End Developer will contribute to the design, development, and maintenance of modern, user-focused web applications that support mission operations. You will build responsive and high-performance interfaces using React, TypeScript, JavaScript, Node.js, HTML, and CSS, ensuring seamless integration with .NET backend services and AWS-hosted environments. In this role, you will collaborate closely with UX designers, backend engineers, and product teams to implement clean, maintainable components and deliver intuitive user experiences. You will participate in code reviews, uphold coding standards, troubleshoot UI issues, and support continuous improvements across the application stack. Your technical expertise, problem-solving skills, and attention to detail will play an important role in delivering secure, scalable, and reliable front-end solutions for our customers.
  • Build responsive, high performance user interfaces using Node.js, React, JavaScript, TypeScript, HTML, and CSS
  • Develop modular, maintainable UI components aligned with modern front end engineering practices
  • Integrate front end applications with backend .NET services using REST APIs, JSON, and XML
  • Implement client-side state management and optimize rendering for scalable, enterprise-grade applications
  • Collaborate with UX/UI designers and backend engineers to ensure seamless end-to-end functionality
  • Participate in code reviews and enforce standards for readability, quality, and maintainability
  • Use Git and GitLab for version control, branching strategies, and merge request workflows
  • Ensure front end applications meet accessibility, security, and performance requirements
  • Troubleshoot and resolve UI issues across environments and browsers
  • Work within AWS cloud-hosted environments and support deployments as part of the overall delivery team.


Required Qualifications
  • Active Top-Secret clearance with capability to obtain SCI/CI Poly if needed to meet contract requirements.
  • Bachelor's Degree in Information Technology or a related field of study.
  • Minimum 8 years of experience
  • 3 years of experience developing modern front-end applications using React, Node.js, JavaScript, and TypeScript
  • Hands-on experience building UI components with HTML, CSS, and responsive design techniques
  • Experience integrating with REST APIs and working with JSON and XML data formats
  • Familiarity with Node.js for development tooling, build processes, or backend integration tasks
  • Proficiency with Git and GitLab for source control, versioning, and collaboration
  • Ability to work within cloud environments, preferably AWS, as part of a full-stack delivery pipeline
  • Strong understanding of front-end performance optimization, browser behavior, and debugging
  • Ability to collaborate with cross-functional teams and communicate technical concepts clearly.


Preferred Qualifications
  • Experience with YAML and CI/CD pipeline development (GitLab CI preferred)
  • Exposure to .NET ecosystems and how front-end applications integrate with backend services
  • Experience with automated testing frameworks for UI (Jest, React Testing Library)
  • Familiarity with accessibility standards (Section 508, WCAG)
  • Experience supporting cloud-native architecture in AWS.


Benefits
  • Medical - 100% company paid premiums for employees with dependent options.
  • Dental and Vision
  • Retirement Savings (401k) up to 4% match
  • Health Savings Account (HSA), FSA and DCFSA
  • Company-paid Short/Long-term disability (w/ additional supplemental options)
  • Company-paid Life and AD&D (w/ additional supplemental options)
  • Generous Paid Time Off and ALL 11 Federal Holidays
  • Legal and Identity Protection Services
  • Bonuses for certifications and reimbursement


Employee Perks:

  • UberOne, Company Outings (Sporting events, Happy Hours, etc.), Discounts on services including Pet Insurance


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