Sr. Software Developer

Location: Washington, DC (Hybrid/On-Site as Required)

Clearance Requirement: Ability to obtain and maintain a Public Trust, Secret, or higher clearance as required by the customer

Position Overview:

• We are seeking a highly skilled Senior Software Developer to support the design, development, modernization, and sustainment of mission-critical applications for a federal government customer.
• The successful candidate will serve as a technical leader responsible for developing secure, scalable, and resilient enterprise solutions while supporting Agile and DevSecOps initiatives across the software development lifecycle.
• This role requires extensive experience building and maintaining complex enterprise applications in federal environments, with a strong focus on secure coding practices, application security, continuous integration and delivery (CI/CD), and compliance with federal cybersecurity requirements.
• The Senior Software Developer will collaborate with architects, cybersecurity professionals, product owners, and stakeholders to deliver innovative solutions that advance the customer's mission.

Key Responsibilities:

• Design, develop, test, deploy, and maintain complex enterprise applications and services supporting federal business and mission operations.
• Lead full-stack software development efforts using modern programming languages, frameworks, APIs, and cloud-native technologies.
• Implement secure coding practices and application security controls throughout the software development lifecycle.
• Integrate cybersecurity requirements and DevSecOps principles into application design, development, testing, and deployment processes.
• Develop and maintain CI/CD pipelines to support automated build, testing, security scanning, and deployment activities.
• Conduct code reviews and mentor junior developers to ensure adherence to development standards and best practices.
• Support application modernization initiatives, including migration of legacy systems to modern architectures and platforms.
• Collaborate with security teams to address vulnerabilities identified through static code analysis, dynamic testing, and penetration testing activities.
• Ensure applications comply with federal security requirements, including secure software development frameworks and industry best practices.
• Participate in Agile ceremonies, including sprint planning, backlog refinement, daily standups, and retrospectives.
• Develop and maintain technical documentation, system designs, interface specifications, and operational procedures.
• Troubleshoot and resolve complex application issues in development, test, and production environments.
• Support Governance, Risk, and Compliance (GRC) and cybersecurity platform integrations where applicable.

Required Qualifications:

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related technical field. Additional relevant experience may be substituted for education requirements.
• Minimum of 7 years of software development experience supporting enterprise applications.
• Minimum of 5 years of experience supporting federal IT systems and environments.
• At least 8 years of experience designing, developing, and maintaining highly complex applications in enterprise environments.Strong experience with:
• Full-stack application development
• Secure coding methodologies
• Application security and vulnerability remediation
• Agile software development
• DevSecOps practices and automation
• Enterprise application architecture and integration
• RESTful APIs and microservices
• Source control and CI/CD platforms
• Experience implementing and supporting secure software development practices aligned with federal cybersecurity requirements.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent written and verbal communication skills.

Required Certifications:

• Certified Scrum Developer (CSD) or equivalent Agile development certification.

Preferred Qualifications:

• Experience supporting federal cybersecurity, risk management, or compliance initiatives.
• Knowledge of OWASP Top 10, Secure Software Development Framework (SSDF), NIST guidance, and application security best practices.
• Experience with cloud platforms such as AWS, Azure, or Google Cloud.
• Experience developing and integrating Governance, Risk, and Compliance (GRC) platforms and cybersecurity tools.
• Experience with containerization technologies such as Docker and Kubernetes.
• Familiarity with automated testing, static code analysis, and security scanning tools.
• Experience supporting Authority to Operate (ATO) processes and secure federal system deployments.

Experience with one or more of the following is highly desirable:

• Java, C#, Python, JavaScript, TypeScript
• React, Angular, Vue.js
• .NET, Spring Boot, Node.js
• Git, GitLab, GitHub, Azure DevOps
• Jenkins, GitHub Actions, Azure Pipelines
• Docker, Kubernetes, OpenShift
• SQL and NoSQL databases
• AWS, Azure, or hybrid cloud environments

Pay Rate: $80-$90.00/hr

About Seneca Resources:

At Seneca Resources, we are more than just a staffing and consulting firm; we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact.

When you work with Seneca, you're choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. We take the time to understand your goals and match you with roles that align with your skills and career path. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.

Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.