Sawell
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Senior Front End Developer

Accelint

Tacoma, WAFull Time

Accelint

Posted 2026-09-04

About the role

Lyntris   is a defense technology company that connects sensing to action across the connected battlespace.   Lyntris   brings together the talents of   Accelint   and Vitesse teams under one mission, with each contributing deep   expertise   within their domain.   Combining differentiated hardware,   software   and mission   expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed,   precision   and confidence in contested environments.     Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space   Force   and allied partners — spanning strategic,   operational   and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs,   Lyntris   works at every level of the mission, from national command authority to the tactical edge.     Solutions are designed by operators who understand the mission, engineered for the conditions that degrade or defeat standard systems, and built on an open, modular architecture that integrates into existing programs without requiring them to start over.   Lyntris   moves faster than the traditional defense cycle — with integrated design, build and test capabilities in-house — and delivers systems that sustain and endure long after initial fielding.  *This position requires an   active U.S. national security clearance.   To learn more about the security clearance process please access this   link.   **This Position is Hybrid out of a facility in Tacoma, WA Senior Front End Developer Full time Hybrid   We are looking for a Senior Front End Developer to work alongside our balanced agile delivery teams on highly complex DoD projects, specifically the development of command and control (C2) software. Lyntris with its partners is building an innovative cloud-based command and control system that seamlessly integrates existing capabilities and provides automation that improves efficiency and effectiveness of mission planning and execution. A perfect candidate is able to write high-quality code, integrate with partner capability providers, and ensure code and product quality. This position will work alongside our development team   and specifically with our customers, to gain immediate feedback on software features and rapidly prototype candidate solutions.     Duties & Responsibilities   Sit with system operators to get feedback on software and ideate on potential solutions   Push new requirements to development teams and rapidly prototype modifications to React-based web applications   Contribute to the development and maintenance of reusable component libraries and shared codebase   Write high-quality code, applying best practices, coding standards, and design patterns   Participate in the entire software development lifecycle, including requirement gathering, design, development, testing, and deployment, using an agile, iterative process   Participate in code reviews and ensure code quality through effective testing strategies   Collaborate with developers, designers, testers, project managers, product managers, and project sponsors   Communicate tasking estimation and progress regularly to a development lead and product owner through appropriate tools   Team with other developers, fostering a culture of continuous learning and professional growth   Performs other duties as assigned.     Required Qualifications   At least 8+ years of professional front end / UI development experience (5+ with a STEM B.S.) including 5+ years of experience with React (other Javascript frameworks are a plus)   Able to develop organized, accessible, and performant apps using JavaScript, typescript, advanced CSS, and HTML   Solid understanding of application architecture, and concepts like asynchronous programming, closures, types, and ES6   Familiarity with WebGL based libraries (e.g., ThreeJS, Deck.gl, Mapbox GL JS)   Experience with CSS in JS solutions such as Styled Components or Emotion   Proficient with version control systems (e.g., Git) and effective collaborative development workflows    Experience managing robust build & test tools and implementing workflow automations (e.g., Jest, Rollup, Webpack, Babel)   Design-minded attention to detail in user interface and user experience implementation    Must be a US Citizen and c urrentls   holds an active Secret or Top Secret U.S. national security clearance or be able to receive and   maintain   one.   To learn more about the security clearance process please access this   link.    Preferred Qualifications (Not Required)   Experience in managing, mentoring & coaching development teams in an Agile environment (e.g., leading scrum and agile project management tools & ceremonies)   Experience in DevOps or deploying web applications   Experience working in a secure facility or directly with mission operators   Experience auditing third party dependencies in React ecosystem   A portfolio of past projects with code samples or GitHub links   Geospatial information system (GIS) experience   Penchant for learning new technologies, balanced with strong pragmatic thinking   Experience with state management libraries like Redux or React Context API   Ability to travel as needed     Physical Requirements   Prolonged periods sitting at a desk and working on a computer.  Must be able to   lift up   to 15 pounds at times.   This position may require the ability to travel up to 5% 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   Lyntris   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

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