Full Stack Developer Sr

Full Stack Developer Sr  - (CIS0003PK) 

Your Impact:

 

As a Sr Full Stack Developer at Amentum, you’ll be at the forefront of designing, developing, and deploying sophisticated enterprise applications in support of government IT missions. You’ll lead efforts across the full software development lifecycle while applying advanced technical knowledge and strategic insight to create systems that are efficient, secure, and scalable. Your day-to-day responsibilities will include:

•    Lead architectural design and development efforts for enterprise-level applications using technologies including C#, Java, JavaScript, CSS, MVC, .NET, and SQL.
•    Coordinate with cross-functional teams to gather, analyze, and define system requirements that align with customer missions and long-term goals.
•    Design and implement scalable, maintainable solutions leveraging T-SQL, JavaScript frameworks, and scripting languages, while ensuring code structure follows best practices.
•    Oversee development workflows in Team Foundation Server (TFS) and ensure proper source control, build, and release processes are followed.
•    Perform system integration and prototype emerging technologies to support innovation and future-proof existing infrastructures.
•    Write, review, and maintain comprehensive technical documentation, including architecture diagrams, data flow models, and test plans.
•    Stay up-to-date on industry trends and emerging technologies, recommending tools and approaches that improve development processes and system performance.
•    Troubleshoot complex technical issues quickly and effectively, applying strong problem-solving and decision-making skills.
•    Mentor junior developers and engineers, providing code reviews, architectural guidance, and technical leadership.
•    Coordinate and prioritize multiple ongoing projects and tasks to meet deadlines in a high-pressure, mission-driven environment.
•    Collaborate with business analysts, developers, and senior leadership, ensuring solutions meet performance, security, and usability standards.
•    Communicate effectively across technical and non-technical audiences to align project goals, timelines, and deliverables.

This role calls for someone who thrives under pressure, is technically exceptional, and can see both the big picture and the fine details. Your ability to multitask, stay organized, and lead through complexity will be critical to your success.

Requirements: 
• Bachelor’s degree in Computer Science, Engineering, Information Technology, or a related field.
• 9+ years of experience in systems architecture, software development, or enterprise IT design. Which at least seven (7) years specialized experience
• Proven expertise in full software development lifecycle (SDLC), with hands-on experience in analysis, coding, testing, documentation, and system acceptance.
• Demonstrated knowledge of government IT systems, standards, and security frameworks.
• Proficiency in multiple programming languages and technologies, including:
•    C#
•    Java
•    JavaScript
•    CSS
•    .NET Framework
•    MVC architecture
•    T-SQL / SQL
•    JavaScript Frameworks (e.g., Angular, React, Vue)
• Strong understanding of system design, prototyping, and technology evaluation to support mission objectives and enterprise scalability.
• Experience conducting requirements gathering, functional analysis, and cost-benefit assessments for large-scale IT solutions.
• Ability to develop and maintain technical documentation, system diagrams, and architecture reports.
• Excellent communication and interpersonal skills, including the ability to interface with technical teams and non-technical stakeholders.

 

Here's What You'll Need:

 

Clearance Required: TS SCI CI-Poly

Minimum Education: Bachelor’s Degree in Computer Science, Information Systems, Engineering, or Business

Minimum Years of Experience: Related discipline with nine (9) years of which at least seven (7) years specialized experience.

Required Certifications: N/A

Preferred: 
•    Prior experience supporting DOD or other federal government agencies.
•    Familiarity with Team Foundation Server (TFS) and version control best practices.
•    Knowledge of cloud platforms and services, such as AWS, Azure, or Google Cloud.
•    Experience with Agile or DevSecOps methodologies in a systems development context.
•    Certifications such as:
o    TOGAF (The Open Group Architecture Framework)
o    Microsoft Certified: Azure Solutions Architect Expert
o    AWS Certified Solutions Architect – Associate/Professional
o    Security+ Certification 
•    Ability to lead and mentor multidisciplinary technical teams.
•    Strong organizational and decision-making skills, with the ability to handle multiple tasks under pressure and tight deadlines.
•    Track record of identifying and implementing emerging technologies to improve business performance and operational efficiency.  

#javelin

 Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, religion, color, sex, gender, national origin, age, United States military veteran’s status, ancestry, sexual orientation, gender identity, marital status, family structure, medical condition including genetic characteristics or information, veteran status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal EEO laws and supplemental language at EEO including Disability/Protected Veterans  and Labor Laws Posters. 

Primary Location

: United States-District of Columbia-Washington-20362-WSD2

Job Posting

: Jul 8, 2025, 9:34:25 PM

Job

: Software

Organization

: CMS

Job Type

: ExperiencedJob Classification: Fulltime-Regular

Work Locations

: 20362-WSD2 4555 Overlook Ave SW  Washington 20375Capabilities: Cyber