.NET Web Developer

Verdantas LLC; Washington (District of Columbia); On-site; USD 115,000 - 130,000; Full time

Benefits offered by this job

Flexible Work Environment

Paid Parental Leave

Medical

Dental

Vision

Life and AD&D Insurance

Short-Term and Long-Term Disability

401(k) with Company Match

Paid Time Off + Holidays

Job summary

Verdantas LLC seeks a strong .NET Web Developer to support a Federal client in Washington, DC. You will design, develop, test, and maintain web-based applications using C#, ASP.NET, and .NET Core, delivering secure, scalable software for complex environmental and infrastructure challenges.

You will collaborate with cross-functional teams, gather requirements, and implement robust REST APIs and user interfaces while staying current with emerging Microsoft technologies. U.S.

Qualifications

• Bachelor's degree in CS/IT/SE or related field is required.
• 5+ years of web app development with Microsoft .NET framework.
• Strong knowledge of C#, ASP.NET MVC, ASP.NET Core, and SQL Server.

Responsibilities

• Design, develop, test, and maintain web apps using C#, ASP.NET, and .NET Core.
• Create responsive UI with HTML/CSS/JS and front-end frameworks.
• Build RESTful APIs and backend services for integrations.
• Collaborate with stakeholders to translate requirements into technical solutions.
• Troubleshoot and resolve defects and performance issues.
• Optimize performance, scalability, and security of applications.
• Write clean, documented code and participate in code reviews.
• Assist deployment and production support; integrate with SQL Server databases.

Skills

C#

ASP.NET

MVC

ASP.NET Core

REST APIs

SQL Server

Git

Azure DevOps

Agile

SDLC

Cybersecurity basics

Education

Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related field

Tools

Git

Azure DevOps

Job description

Welcome to Verdantas, where innovation meets sustainability, and your career finds purpose! At Verdantas, we’re redefining environmental consulting and sustainable engineering through our use of cutting-edge modeling and digital technology and our genuine commitment to people. Our work spans high-growth sectors like water resources, resilient land use, energy transformation, and civil infrastructure. Our commitment to excellence, across more than 90 offices, is championed by a team of over 2,000 experts, scientists, engineers, geologists, and technical specialists, embedded in a people-focused culture, prioritizing the well-being of our employees, clients, and the communities we serve. We partner with clients to deliver smart, data-driven solutions to complex environmental and infrastructure challenges. We don’t just solve problems; we help shape a more sustainable future. Join a people-first culture that values your well-being, empowers your growth, and amplifies your impact. At Verdantas, your career goes beyond the expected, and your work helps build a better world. Ready to shape the future of resilient communities? AEEC, a Verdantas Company, is seeking a strong .NET Web Developer to support our Federal client in Washington, DC. As the .NET Web Developer, you will be responsible for designing, developing, testing, and maintaining web-based applications using Microsoft technologies. This role requires strong technical expertise, problem-solving abilities, and the ability to collaborate with cross-functional teams to deliver high-quality software solutions. When joining our team, your expertise will contribute to shaping resilient communities and advancing Verdantas’ mission to make the world a better place through science, technology, and collaboration. Named the #1 firm to work for in 2026 & 2025 by Zweig Group, you’ll be part of a team that values your impact, supports your growth, and celebrates your success every step of the way.

What You’ll Do:

• Design, develop, test, and maintain web applications using C#, ASP.NET, .NET Core, and related Microsoft technologies
• Develop responsive and user-friendly web interfaces using HTML, CSS, JavaScript, and front-end frameworks
• Build and maintain RESTful APIs and backend services to support web applications and system integrations
• Collaborate with business stakeholders, project managers, and team members to gather requirements and translate them into technical solutions
• Troubleshoot, debug, and resolve software defects and performance issues
• Optimize application performance, scalability, and security
• Write clean, maintainable, and well-documented code following industry best practices
• Participate in code reviews and contribute to continuous improvement initiatives.
• Manage application deployments and support production environments when needed
• Integrate applications with SQL Server databases and third-party systems.
• Stay current with emerging technologies and recommend improvements to existing applications and development processes

What You Bring:

• Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related field
• 5+ years of experience developing web applications using the Microsoft .NET framework
• Strong proficiency in C#, ASP.NET MVC, ASP.NET Core, and .NET technologies
• Experience with HTML5, CSS3, JavaScript, jQuery, and modern front-end frameworks
• Experience developing and consuming REST APIs and web services
• Strong knowledge of Microsoft SQL Server, database design, and query optimization
• Experience with source control systems such as Git or Azure DevOps
• Understanding of software development lifecycle (SDLC) principles and Agile methodologies
• Strong analytical, troubleshooting, and problem-solving skills
• Understanding of cybersecurity best practices for web applications is preferred
• U.S. Citizenship is required

Salary Range:

Salary Range: The compensation range for this position is $115,000 - $130,000, with final compensation determined based on years of experience, qualifications, and licensing status.

Benefits:

• Flexible Work Environment
• Paid Parental Leave
• Medical
• Dental
• Vision
• Life and AD&D Insurance
• Short-Term and Long-Term Disability
• 401(k) with Company Match
• Paid Time Off + Holidays

Verdantas strives to develop new ways to increase diversity awareness within our organization. We recruit and reward our employees based on capability and performance — regardless of race, gender, sexual orientation, gender identity or expression, lifestyle, age, educational background, national origin, religion, or physical ability. For us, it is imperative to build balanced teams from all walks of life and we believe that a diverse workforce is a stronger workforce. Verdantas is an EOE race/color/religion/sex/sexual orientation/gender identity/national origin/disability/vet