Senior Application Developer

Join to apply for the Senior Application Developer role at WSP in the U.S.

WSP’s Visualization and Data Intelligence (VDI) national practice provides expert support for professional services consulting initiatives. As a team characterized by energy, creativity, and results‑orientation, VDI specializes in visual design and technological innovation on projects that contribute to community development nationwide. The group’s collaborative and innovation‑centered culture enables engagement with a diverse array of complex projects and emerging technologies.

• Architect, develop, launch, and maintain scalable .NET web applications.
• Lead front‑end development with a focus on accessibility and responsiveness.
• Drive UI/UX design execution.
• Create technical specs and contribute to core code and documentation.
• Troubleshoot technical issues, bugs, and optimize performance.
• Support, enhance, and maintain legacy systems.
• Mentor team members and support business development efforts.
• Stay current with industry trends and best practices.

• Bachelor’s degree in computer science, MIS, or related field; or Associate’s degree plus 10 years in related field.
• Must be eligible to work in the United States without sponsorship now or in the future.
• 7–10 years custom development experience with ASP.NET/C# with a strong focus on UI/UX experience.
• Proficient in front‑end frameworks (React preferred, or Vue, Angular, Blazor), HTML5, JavaScript (ES6+), CSS3, and JSON.
• Proficient in front‑end architecture, performance optimization, and cross‑browser testing.
• Proficient in one or more database technologies (Transact‑SQL with SQL Server, MySQL, etc.).
• Proficient with geospatial tools (Mapbox, Google Maps, or ArcGIS).
• Proficient in accessibility standards (Section 508, WCAG 2.0), front‑end build tools (Webpack, Tailwind, Vite), and SEO best practices.
• Strong knowledge in Microsoft platforms, frameworks, and tools.
• Experience with CMS platforms (Umbraco, Kentico, Site Core, Word Press, etc.).
• Solid experience mentoring developers, leading team code reviews, and fostering continuous growth and learning within the team.
• Proficient working in Dev Ops/ Git environment for version control with a good discipline in pull requests and merge branch operations.
• Experience/working knowledge of AWS and Azure Cloud Environments.
• Excellent communication and problem‑solving skills.
• Self‑motivated with the ability to prioritize, meet deadlines, and manage changing priorities.

• Over 10 years custom development experience with ASP.NET/C# with a strong focus on UI/UX experience.
• Proficiency in React front‑end framework.
• Experience in consulting or fast‑paced, multi‑project environments.
• Experience with Umbraco CMS platform.

WSP provides a comprehensive suite of benefits focused on providing health and financial stability throughout the employee’s career. These benefits include coverage related to medical, dental, vision, disability, and life; retirement savings; paid sick leave; paid vacation (or other personal time); paid parental leave; and paid time off for purposes of bereavement, voting, and/or attendance at naturalization proceedings.

Expected Salary (all locations): $130,000 - $163,000

Mid‑Senior level

Full‑time

Engineering and Information Technology

Professional Services

WSP USA is the U.S. operating company of WSP, one of the world’s leading engineering and professional services firms. Dedicated to serving local communities, WSP USA designs lasting solutions in the buildings, transportation, energy, water and environment markets. With more than 15,000 employees in over 300 offices across the U.S., we partner with our clients to help communities prosper.

WSP provides a flexible and agile workplace model while meeting client needs. Employees are also afforded a comprehensive suite of benefits including medical, dental, vision, disability, life, and retirement savings focused on providing health and financial stability throughout the employee’s career.

WSP USA (and all of its U.S. companies) is an Equal Opportunity Employer…