Frontend Developer – Data Visualization & GIS

Job Description

Job Title

Frontend Developer (Data Visualization \& Interactive UI)

Overview / Summary

We are seeking a Frontend Developer to build a modern, public-facing Data Explorer that enables users to interact with health data through dynamic charts, maps, filters, and downloadable datasets. This role focuses on delivering a responsive, accessible, and visually engaging user experience that supports data exploration across multiple views and controls. The position involves close collaboration with backend developers, architects, QA, and delivery teams to create a high-quality, performant, and compliant public data portal.

Key Responsibilities

Frontend Development \& User Experience

• Design and develop responsive, accessible UI for a public-facing data exploration portal
• Build interactive UI components such as tree navigation, query builders, filter panels, and visualization control panels
• Develop clean, reusable frontend components for scalable and maintainable UI architecture
• Ensure a consistent user experience aligned with project requirements and design standards

Data Visualization \& Mapping

• Build interactive chart visualizations including time-series, bar charts, and multi-series displays
• Integrate geospatial map visualizations using ArcGIS Maps SDK for JavaScript and REST-based map services
• Support seamless user interactions across maps, charts, tables, and filtering tools
• Implement dataset export and download workflows across multiple formats

API Integration \& Performance

• Consume RESTful APIs for dynamic data rendering and state management
• Collaborate with backend developers to define API contracts and improve query efficiency
• Optimize frontend performance for data-heavy, interactive experiences
• Ensure smooth integration between UI components, backend services, and data delivery patterns

Accessibility, Quality \& Testing

• Ensure compliance with ADA, Section 508, and WCAG 2\.1 AA accessibility requirements
• Use automated testing tools and frontend best practices to support accessibility compliance
• Integrate accessibility validation into delivery workflows and CI/CD gates
• Write and maintain unit and integration tests using Jest

Required Qualifications

• Strong experience developing modern, responsive frontend applications
• Experience building interactive user interfaces for data-driven or analytical applications
• Experience with JavaScript and modern frontend development practices
• Experience with Chart.js, D3\.js, or similar visualization libraries
• Experience integrating REST APIs into frontend applications
• Experience with ArcGIS Maps SDK for JavaScript or similar geospatial/mapping integrations
• Experience with frontend testing approaches including unit and integration testing
• Strong understanding of accessibility standards such as ADA, Section 508, and WCAG 2\.1 AA
• Ability to collaborate with backend, QA, architecture, and delivery teams

**What Makes HTC A Great Place To Build Your Future**

HTC Global Services wants you to join our team. Come build new things with us and advance your career. At HTC Global, you’ll collaborate with experts, work alongside clients, and be part of high-performing teams driving success together. You’ll have long-term opportunities to grow your career and develop skills in the latest emerging technologies.

At HTC Global Services, our employees have access to a comprehensive benefits package. Benefits can include Group Health (Medical, Dental, and Vision), Paid Time Off, Paid Holidays, 401(k) matching, Group Life and Disability insurance, Professional Development opportunities, Wellness programs, and a variety of other perks.

Our success as a company is built on inclusion and diversity. HTC Global Services is committed to providing a workplace free from discrimination and harassment, where every employee is treated with dignity and respect. We celebrate differences and believe that diverse cultures, perspectives, and skills drive innovation and success. HTC is an Equal Opportunity Employer and a proud National Minority Supplier. We seek to empower each individual, fostering an environment where everyone feels valued, included, and respected.