Job Summary Seeking an experienced Senior Software Engineer to support mission-critical customer requirements The successful candidate will lead and mentor a team of UI developers while remaining hands-on throughout the full software development lifecycle This role requires strong front-end architecture and development experience, the ability to translate UX/UI designs into accessible production-ready interfaces, and the technical breadth to contribute to backend services, APIs, data stores, infrastructure, and deployment pipelines as needed Primary Responsibilities Lead and mentor a team of UI/front-end developers, providing technical direction, coding standards, design guidance, and code review Architect and implement scalable, maintainable front-end solutions using modern web frameworks and reusable component patterns Translate UX/UI prototypes, wireframes, and design specifications into functional, responsive, and accessible production interfaces Develop, maintain, and enhance software based on documented system and user requirements Analyze user requirements to derive software design, interface, functional, and performance requirements Collaborate with backend engineers to design and integrate APIs and ensure efficient data flow between front-end and back-end systems Contribute to full-stack development as required, including backend services, databases, infrastructure, and deployment pipelines Review and test software components for adherence to design and functional requirements and document test results Debug existing software, resolve software problem reports, and correct defects Establish and enforce front-end coding standards, best practices, and component reuse Partner with UX/UI designers, systems engineers, product stakeholders, and mission customers to ensure design intent and mission requirements are preserved through implementation Identify and resolve application performance bottlenecks, cross-browser compatibility issues, and technical debt Participate in sprint planning, backlog refinement, technical estimation, architectural reviews, and other Agile ceremonies Support integration of existing software into new or modified systems and operating environments Develop or implement algorithms needed to meet system functional and performance standards Provide technical input regarding hardware/software trade-offs, software reuse, and use of COTS/GOTS solutions in place of new development Perform requirements analysis and decomposition from system-level requirements to individual software components Ensure developed interfaces comply with applicable accessibility requirements, including Section 508 and WCAG standards Write and maintain software, system, interface, and technical documentation Required Qualifications Must have active Top Secret/SCI clearance with NSA Full Scope Polygraph Bachelor's degree in related technical field Proven experience leading, mentoring, or providing technical direction to software development teams Strong proficiency with modern front-end frameworks such as React, Angular, or Vue Strong proficiency with HTML, CSS, and JavaScript Demonstrated experience designing front-end architectures and reusable component frameworks Experience translating UX/UI designs into responsive, accessible, production-ready applications Full-stack software development experience, including integration with backend services and APIs Backend development experience using technologies such as Node.js, Python, or Java Experience designing and integrating APIs and data flows between front-end and backend systems Experience reviewing, testing, debugging, and troubleshooting complex software components Experience working throughout the software development lifecycle in an Agile environment Strong communication, collaboration, and technical leadership skills Desired Qualifications Ansible and/or Salt Terraform, particularly for lane or environment development WebSockets JBLOCKS CASPORT Neo4j CI/CD pipelines and automated software delivery Containerized and cloud-based application environments Graph database technologies Secure application development in classified or mission environments Section 508 / WCAG accessibility implementation and testing COTS/GOTS integration and software reuse Performance optimization and scalable application design Exempt hourly position. 11 paid holidays, minimum of 3 weeks PTO, company sponsored group medical plan, company paid dental, vision, life insurance, and STD/LTD plans. Salary is dependent upon the candidate’s experience and qualifications. Momentum Engineering, Inc. fosters an employee-centric culture. Our strength lies in our people. With a high percentage of employees holding advanced degrees in engineering, computer science, and related disciplines, we bring deep technical expertise to every mission. Our team includes professionals with security clearances and full-scope polygraphs, ensuring trusted, secure support for the most sensitive national security initiatives. Additionally, our workforce is equipped with industry-leading certifications, demonstrating a commitment to continuous learning and excellence. Most importantly, our exceptional employee retention rate reflects a culture of professional growth, mission focus, and dedication—ensuring long-term stability and expertise for our customers’ critical needs.