Front End Developer; L2

Location: St. Louis, MO

Required: Due to the nature of this role and government contract requirements, applicants must be U.S. citizens.

This position is based in St. Louis, Missouri and requires in-office presence. Candidates must reside or be willing to relocate to the St. Louis area. Relocation assistance is not provided. There is work from home flexibility available.

We are seeking an experienced Front-End Developer with strong Angular expertise and hands‑on experience building geospatial web applications. In this role, you will independently design and implement interactive mapping features, integrate spatial services, and optimize performance for data‑intensive applications.

You will collaborate with backend engineers, GIS analysts, and product stakeholders to deliver scalable, high‑performance geospatial platforms.

• Design, develop, and maintain advanced Angular‑based geospatial applications
• Build complex interactive map tools such as drawing, editing, measurement, filtering, and spatial querying
• Integrate OGC services (WMS, WMTS, WFS), REST APIs, and vector tile services
• Implement and manage application state using RxJS or Ng Rx
• Optimize map rendering performance for large datasets
• Ensure responsive design and cross‑browser compatibility
• Contribute to application architecture discussions
• Write comprehensive unit and integration tests
• Mentor junior developers and provide technical guidance

• 3‑5 years of front‑end development experience (HTML5, CSS3, DOM interaction, async patterns)
• Strong proficiency in Angular and Type Script
• Experience with at least one advanced web mapping library (Open Layers, ArcGIS API for JavaScript, Mapbox GL, etc.)
• Solid understanding of spatial data formats (GeoJSON, vector tiles, KML)
• Familiarity with geospatial coordinate systems and projections
• Experience working with RESTful APIs and asynchronous data handling
• Experience with Git and modern CI/CD workflows
• Ability to optimize application builds for performance (rendering, network impact, bundle size)
• Familiarity with setting up and growing front end test suites (unit, component, end to end)

Must currently reside in the St. Louis Metropolitan area or willing to relocate prior to start date. No relocation assistance is available

• Experience with PostGIS or spatial backend systems
• Familiarity with Docker and cloud environments
• Experience optimizing performance for large‑scale spatial applications

• Strong analytical and debugging skills
• Ability to translate complex spatial requirements into intuitive UI solutions
• Comfortable working independently in an Agile environment

Employment with T‑Kartor USA is contingent upon the successful completion of a background investigation and, where permitted by law, a pre‑employment drug screening.

As a federal contractor, T‑Kartor USA complies with all applicable federal laws and regulations, including but not limited to the Fair Credit Reporting Act (FCRA), Executive Order 11246, the Drug‑Free Workplace Act of 1988, and applicable regulations enforced by the U.S. Department of Labor and the Office of Federal Contract Compliance Programs (OFCCP).

Equal Employment Opportunity, Disability, and FMLA Notice

We are an Equal Opportunity Employer and do not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, gender identity), national origin, age, disability, genetic information, veteran status, or any other protected status in accordance with applicable federal, state, and local laws. We are committed to providing reasonable accommodations to qualified individuals with disabilities in accordance with the Americans with Disabilities Act (ADA).

Eligible employees may be entitled to unpaid, job‑protected leave under the Family and Medical Leave Act (FMLA) for qualifying family and medical reasons, in accordance with applicable law.

Background investigations may include verification of employment history, education, professional credentials, criminal history, and other information relevant to the position and consistent with business necessity. Any background check…