Senior Frontend Software Engineer (Level III) – Product Development (FSI)

Accelint is a mission-driven technology company focused on strengthening national security and supporting critical industries. We build the technologies that help operators and organizations see what’s happening, make faster and better decisions, take action with confidence, and stay ready for what comes next. Our work includes advanced sensors, autonomous systems, mission command and control software, AI-enabled training and simulation, and tools that improve logistics, maintenance, and overall readiness.  

For nearly 30 years we have supported military and civilian agencies across the Department of Defense, U.S. allies and partners, and essential industries. When you join Accelint, your work directly contributes to protecting national security and strengthening the systems our society depends on.  

Accelint brings together the talents of Hypergiant, Forward Slope, Systems Innovation Engineering, SoarTech, and Highbury Defense Group under one mission, with each entity contributing deep expertise in its domain. This role is part of our Forward Slope (FSI) division, which focuses on C2, engineering, cyber, and international programs. FSI integrates complex systems, transforms geospatial and operational data into clear insights, and supports naval, joint, and allied missions with technical rigor and global perspective. 

Accelint is seeking a Frontend Software Engineer III to build intuitive, remarkable user interfaces (UIs) for our Command and Control (C2) platform. This role focuses on delivering frontend capabilities that support operational workflows, clarity, and real-time decision-making. You will help shape UI architecture, collaborate closely with backend and product teams, and ensure the frontend experience meets the reliability and usability demands of our customers.

Job Description

• Senior Frontend Software Engineer (Level III) – Product Development
• Full time
• Remote, Hybrid, and Onsite options – San Diego, CA

Duties & Responsibilities 

• Design and implement frontend applications using modern web technologies
• Translate operational and product requirements into intuitive, dependable user interfaces
• Own frontend capability streams from design through deployment and sustainment
• Design and implement UI state management and data flows
• Collaborate closely with backend engineers to integrate platform APIs
• Ensure frontend performance, reliability, and maintainability
• Mentor other engineers through code reviews and frontend design discussions
• Improve frontend development standards, tooling, and processes
  

Required Qualifications 

• Bachelor’s degree in computer science, engineering, mathematics, physics, or related field
• 7+ years of demonstrated development experience with:
• • Modern frontend frameworks (React, Node.js, TypeScript)
  • Delivering production UIs for complex or operational systems
  • Passion for clean, maintainable and accessible UI development
  • Mentoring or technically leading other engineers
• Proficiency in all or some of the following areas:
• • UI development with React and modern web frameworks
  • UI state management (Redux, Zustand, or similar)
  • Type-sensitive data models
  • REST API integration and data handling
  • Unit testing frameworks for frontend applications
  • Build dependency management and tooling
  • Authentication and authorization concepts (OIDC / OAuth 2.0)

Preferred Qualifications

• UI component libraries (Material UI, Tailwind)
• GIS data visualization or mapping libraries
• CesiumJS
• GitLab CI/CD build automation
  

Clearance Requirements 

Some positions will require access to U.S. National Security information.  Positions that require this access will be required to receive and maintain a U.S. government personnel security clearance (PCL).  In order to qualify for this position, the candidate must be a US Citizen and either currently possess this National Security eligibility or be able to complete the investigation application process with a favorable determination and maintain that eligibility throughout their employment. To learn more about the security clearance process please access this link.  

EEOC & Know Your Rights 

Accelint companies are Equal Opportunity Employers. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, status as a protected veteran or any other status protected by applicable federal, state, and local law. We ensure that all employment decisions, including hiring, promotion, compensation, and other terms and conditions of employment, are based on merit, qualifications, and business needs. For more information about your rights, please review the "Know Your Rights" poster from the Equal Employment Opportunity Commission (EEOC). Know your Rights: English Spanish 

Pay Scales & Benefits 

The listed pay scale reflects the broad, minimum to maximum, pay scale for this position for the location for which it has been posted and is not a guarantee of compensation or salary. Other compensation considerations may include, but are not limited to, job responsibilities, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, or other applicable factors. 

Benefits include… 

• Paid Time Off 

• Paid Company Holidays 

• Medical, Dental & Vision Insurance 

• Optional HSA and FSA 

• Base and Voluntary Life Insurance 

• Short Term & Long-Term Disability Insurance 

• 401k Matching 

• Employee Assistance Program