.Net Developer - Active Secret Clearance Required

Kelly Services; Vienna (VA); On-site; USD 95,000 - 140,000; Full time

Benefits offered by this job

Medical benefits

Retirement plan

Paid holidays

Transit benefits

Telemedicine

Disability insurance

Job summary

Kelly Government Solutions seeks a seasoned Full-Stack Developer (.NET) to design, develop, and maintain scalable web and cloud-native applications using modern frameworks and Microsoft Azure services. The role requires strong front-end/back-end expertise, cloud architecture understanding, and a focus on secure, high‑performing code.

Responsibilities include building RESTful APIs, devops pipelines with Azure DevOps and Jenkins, containerization with Docker/Kubernetes, and SQL Server data

Qualifications

• US citizenship is required.
• Active Secret Clearance is required.
• AZ-900 or higher Azure certification is required.
• IAT Level I certification required or ability to obtain one.
• 5+ years of full-stack software development experience, preferably in Microsoft Azure environments.

Responsibilities

• Design, develop, test, deploy, and maintain full-stack apps using C#, .NET, JavaScript, Angular/React, Node.js, and Python.
• Architect secure, scalable cloud-native solutions on Microsoft Azure.
• Modernize legacy apps and migrate to Azure cloud environments.
• Collaborate with cross-functional teams to translate business needs into technical solutions.

Skills

C# / .NET

JavaScript frameworks

Azure

REST APIs / Microservices

SQL Server

CI/CD

Git / TFS

Docker / Kubernetes

Education

U.S. Citizenship

Tools

Azure DevOps

Jenkins

Git

Docker

Kubernetes

Job description

Kelly Government Solutions is seeking a seasoned Full-Stack Developer (.NET) to design, develop, and maintain scalable web and cloud-native applications using modern development frameworks and Microsoft Azure services.

The ideal candidate will have strong experience across both front-end and back-end development, a solid understanding of cloud architecture, and a passion for developing clean, secure, high-performing, and efficient code. This role requires strong collaboration skills, technical leadership, and the ability to work across the full software development lifecycle.

Key Responsibilities

• Design, develop, test, deploy, and maintain full-stack applications using technologies such as C#, .NET, JavaScript, Angular, React, Node.js, and Python.
• Architect scalable, secure, and high-performance solutions using modern cloud technologies.
• Modernize and migrate legacy applications and systems to Microsoft Azure cloud environments.
• Collaborate with cross-functional teams, stakeholders, and technical partners to translate business requirements into effective technical solutions.
• Lead technical discussions and code reviews while establishing and maintaining development standards and best practices.
• Mentor junior developers and provide technical guidance to development team members.
• Build, manage, and optimize CI/CD pipelines using tools such as Azure DevOps and Jenkins.
• Utilize version control systems including Git and TFS.
• Design and integrate RESTful APIs, microservices, serverless components, and cloud-native applications.
• Develop and support applications utilizing Microsoft SQL Server and SQL databases.
• Troubleshoot and resolve complex technical issues across front-end, back-end, application, cloud, and database environments.
• Work with Azure App Services, Azure Functions, Azure SQL Database, Azure DevOps, AI/ML services, and Azure AI Search.
• Implement and support containerized applications using Docker and Kubernetes.
• Apply serverless architecture principles and modern cloud development practices.
• Support secure integration and cross-domain cloud traffic.
• Collaborate with teams utilizing platforms such as ServiceNow.
• Ensure applications meet security, performance, scalability, reliability, and accessibility best practices.
• Stay current with emerging technologies, development frameworks, cloud services, and industry best practices.

Required Qualifications

• U.S. Citizenship required.
• Active Secret Clearance required.
• Microsoft AZ-900 or higher Azure certification required.
• IAT Level I certification required or the ability to obtain one.
• 5+ years of full-stack software development experience , preferably with significant experience in Microsoft Azure environments.
• Strong experience with both front-end and back-end development.
• Proficiency with C# and .NET.
• Experience with modern JavaScript frameworks and technologies such as Angular and/or React.
• Experience with one or more additional development languages such as Node.js and Python.
• Experience designing and developing scalable applications in Microsoft Azure.
• Strong experience with Microsoft SQL Server / SQL databases.
• Experience with Git and/or TFS.
• Experience with Azure DevOps and/or Jenkins and CI/CD practices.
• Experience developing and integrating APIs and microservices.
• Knowledge of Docker, Kubernetes, and serverless architecture.
• Strong understanding of application security, performance, scalability, and accessibility best practices.
• Ability to troubleshoot complex issues across the full technology stack.

Preferred Qualifications

• Experience modernizing or migrating legacy applications to Microsoft Azure.
• Experience with Azure App Services, Azure Functions, Azure SQL Database, and Azure AI Search.
• Experience with AI/ML technologies and integrating AI capabilities into applications.
• Experience with ServiceNow.
• Familiarity with cross-domain cloud traffic and secure cloud integrations.
• Experience working in a federal government or highly regulated environment.
• Experience leading development teams, conducting code reviews, and mentoring junior developers.
• Strong communication and collaboration skills with the ability to work effectively with technical and non-technical stakeholders.

Why Join Us?

Join a team where your technical expertise and experience directly contribute to the development of innovative, secure, and scalable solutions. This is an opportunity to work with modern Microsoft Azure technologies while helping to shape the future of cloud-native application development.

If you are a highly experienced Full-Stack .NET Developer with an active Secret Clearance and a passion for modern cloud technologies, we would like to hear from you.

As part of our promise to talent, Kelly supports those who work with us through a variety of benefits, perks, and work-related resources. Kelly offers eligible employees voluntary benefit plans including medical, dental, vision, telemedicine, term life, whole life, accident insurance, critical illness, a legal plan, and short-term disability. As a Kelly employee, you will have access to a retirement savings plan, service bonus and holiday pay plans (earn up to eight paid holidays per benefit year), and a transit spending account. In addition, employees are entitled to earn paid sick leave under the applicable state or local plan.

Why Kelly ® Government Solutions?

Looking to connect with premier government agencies or the top 25 federal government contractors? Kelly Government Solutions partners with these organizations to create expert talent solutions that solve the world’s most critical challenges. We offer a variety of full-time, project (SOW), seasonal, and surge support opportunities in science, engineering, technology, professional, and administrative support roles. Our experts will connect you to the opportunity that fits your schedule and interests and handle the details of transferring and processing all levels of security clearances. It’s just another way we make the job search work for you.

About Kelly

Work changes everything. And at Kelly, we’re obsessed with where it can take you. To us, it’s about more than simply accepting your next job opportunity. It’s the fuel that powers every next step of your life. It’s the ripple effect that changes and improves everything for your family, your community, and the world. Which is why, here at Kelly, we are dedicated to providing you with limitless opportunities to enrich your life—just ask the 300,000 people we employ each year.

Kelly is committed to providing equal employment opportunities to all qualified employees and applicants regardless of race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, age, marital status, pregnancy, genetic information, or any other legally protected status, and we take affirmative action to recruit, employ, and advance qualified individuals with disabilities and protected veterans in the workforce. Requests for accommodation related to our application process can be directed to the Kelly Human Resource Knowledge Center. Kelly complies with the requirements of California’s state and local Fair Chance laws. A conviction does not automatically bar individuals from employment. Kelly participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.

Kelly may use AI-powered tools during the recruitment and hiring process. For full details, including how Kelly uses AI, your rights, and how to request a reasonable accommodation, visit the Recruitment Artificial Intelligence Notice (https://www.kellyservices.com/hubfs/myKelly/Resources/Employment_Policies/Recruitment-Artificial-Intelligence-Notice.pdf?hsLang=en).

Kelly Services is proud to be an Equal Employment Opportunity and Aff…?

Requests for accommodation related to our application process can be directed to Kelly’s Human Resource Knowledge Center. Kelly complies with the requirements of California’s state and local Fair Chance laws. A conviction does not automatically bar individuals from employment.