Systems Architect Senior

Amentum•Washington, DC

2d•$185,000 - $190,000

About The Position

Amentum is hiring a Senior Systems Architect to design, develop, and deploy sophisticated enterprise applications supporting government IT missions. The role leads work across the full software development lifecycle, applying advanced technical knowledge and strategic insight to build efficient, secure, scalable systems. The architect collaborates with system engineers, users, business analysts, developers, and senior leadership to define requirements and deliver solutions aligned with customer missions and long-term goals. The position also provides technical leadership and mentorship to junior developers and engineers while coordinating multiple projects in a mission-driven environment. The position’s stated schedule is 8 hours a day, 5 days a week, within the hours of 6:00 a.m. to 6:00 p.m. It requires a TS SCI with Poly security clearance and IAM1 8570 compliance (Security+). The role is not designated as safety sensitive. Employment is contingent on successfully completing drug screening, which may include screening for marijuana and other federally controlled substances.

Requirements

Bachelor’s degree in Computer Science, Engineering, Information Technology, Information Systems, Business, or a related field.
Nine or more years of experience in a related discipline, with at least seven years of specialized experience in systems architecture, software development, or enterprise IT design.
Demonstrated expertise across the full software development lifecycle, including analysis, coding, testing, documentation, and system acceptance.
Demonstrated knowledge of government IT systems, standards, and security frameworks.
Proficiency in C#, Java, JavaScript, CSS, .NET Framework, MVC architecture, T-SQL/SQL, and JavaScript frameworks such as Angular, React, or Vue.
Strong understanding of system design, prototyping, and technology evaluation in support of 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 work with technical teams and non-technical stakeholders.
TS SCI with Poly security clearance.
IAM1 8570 compliance (Security+).

Nice To Haves

Prior experience supporting the Department of Defense 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 TOGAF, Microsoft Certified: Azure Solutions Architect Expert, AWS Certified Solutions Architect Associate or Professional, or Security+.
Ability to lead and mentor multidisciplinary technical teams.
Strong organizational and decision-making skills, including the ability to handle multiple tasks under pressure and tight deadlines.
A track record of identifying and implementing emerging technologies to improve business performance and operational efficiency.

Responsibilities

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 aligned with customer missions and long-term goals.
Design and implement scalable, maintainable solutions using T-SQL, JavaScript frameworks, and scripting languages, following code-structure best practices.
Oversee development workflows in Team Foundation Server (TFS), including source control, build, and release processes.
Perform system integration and prototype emerging technologies to support innovation and future-proof existing infrastructures.
Write, review, and maintain technical documentation, including architecture diagrams, data flow models, and test plans.
Monitor industry trends and emerging technologies, and recommend tools and approaches to improve development processes and system performance.
Troubleshoot complex technical issues and apply problem-solving and decision-making skills.
Mentor junior developers and engineers through code reviews, architectural guidance, and technical leadership.
Coordinate and prioritize multiple projects and tasks to meet deadlines in a high-pressure, mission-driven environment.
Collaborate with business analysts, developers, and senior leadership to ensure solutions meet performance, security, and usability standards.
Communicate project goals, timelines, and deliverables to technical and non-technical audiences.
Fulfill applicable safety responsibilities, including required training and, as appropriate, self-aid/buddy aid, emergency response, and safety committee activities.
Comply with Amentum’s Quality Policy, applicable Quality System documents, customer contracts, and relevant operational, safety, quality, and environmental procedures and policies.