Senior Software Engineer

C Mack Solutions LLC; Ashburn (VA); On-site; USD 75,000 - 155,000; Full time

Benefits offered by this job

Medical insurance

Retirement plan

Paid time off

Professional development

Job summary

CMS in Ashburn, VA is seeking a Senior Software Engineer to design, develop, and implement software in an Agile environment. You will work on full‑stack applications with Java, JavaScript, and related frameworks, integrating APIs, cloud services, and data systems for a high‑impact Federal program.

The role requires strong written and verbal communication, collaboration with cross‑functional teams, and a focus on delivering clean, tested, well‑documented code.

Qualifications

• Bachelor’s degree and at least 7 years of work experience.
• At least 5 years developing Java applications and frameworks.
• At least 3 years JavaScript development with frameworks such as Angular.
• Experience on story-based Agile teams using Jira and CI/CD tools.

Responsibilities

• Design, develop, and implement software in an Agile environment.
• Collaborate with infrastructure teams to integrate APIs and enhance performance.
• Write clean, maintainable code and conduct thorough testing.
• Troubleshoot defects and performance issues in a timely manner.
• Participate in code reviews and provide constructive feedback.
• Document software specifications, designs, and user guides.

Skills

Strong communication

Team collaboration

Agile teamwork

Education

Bachelor’s degree

Tools

Jira

Git

Kubernetes

Jenkins

SonarQube

AWS

Spring

Hibernate/MyBatis

Job description

Description

CMS is currently seeking Senior Software Engineers in support of a multi-year modernization effort for a customer based in Ashburn, VA.TheSenior Software Engineer must be able to design, develop, enhance, debug, and implement software in an Agile environment. Resources will be members of highly effective Agile teams that create and support applications for a high-impact Federal program supporting homeland security. This role requires full stack development capabilities across a diverse technology stack, with work spanning both front-end interfaces and back-end services, including integration with APIs, cloud platforms, and complex data systems.

Responsibilities:

• Design, develop, and implement software applications using JavaScript.
• Collaborate with IT infrastructure teams to integrate APIs and enhance system performance.
• Write clean, maintainable code and conduct thorough testing to ensure software reliability.
• Troubleshoot and resolve software defects and performance issues in a timely manner.
• Participate in code reviews and provide constructive feedback to peers.
• Document software specifications, design processes, and user guides for future reference.
• Stay updated on industry trends and emerging technologies to continuously improve skills and knowledge.

Requirements

You must live within the DC, MD, VA area.

U.S. Citizenship is required. Must be able to obtain CBP Public Trust clearance.

• Bachelor’s degree plus at least 7 years of work experience
• At least 5 years of experience developing Java applications and associated frameworks
• At least 3 years of development experience using JavaScript and/or JavaScript frameworks like Angular
• At least 3 years of experience working in a story-based Agile team development environment using Jira or a similar tool
• At least 3 years of experience working in an automated development environment, using CI/CD tools such as Git, Kubernetes, Jenkins, SonarQube
• Experience with Spring and Spring Boot
• Experience with Hibernate or MyBatis
• Experience writing automated unit tests
• Experience developing against relational databases (e.g., PostgreSQL, DB2, Oracle)
• Experience working to translate business requirements into working code
• Experience developing in and deploying to a Cloud environment (such as Amazon Web Services)
• Strong communication skills, both written and verbal
• Ability to collaborate with team members to ensure client needs and expectations are met or exceeded
• Cloud experience (AWS preferred)

Work Location: This position is limited to candidates residing in U.S. states where the company is currently registered to employ team members.

Salary Range: $75,000 – $155,000 annually

This position may be filled at the Entry, Mid, Senior, or SME level based on the selected candidate’s qualifications and experience. Final compensation will be determined based on level alignment, experience, education, and internal equity.

Benefits: In addition to base compensation, this position is eligible for company-sponsored benefits, which may include medical, dental, and vision insurance, retirement savings plans, paid time off, and other supplemental programs.