Senior Front End Engineer

Location: This role is based at our Santa Clara, CA office, with the option to work a few days a week remotely.
Travel: Up to 15%, domestic or international.
Job ID: 1903

The Role:

We're looking for a Senior Frontend Engineer with 5+/8+ years of experience to design and build the interface for our Quantum Security platform. This role blends product design thinking with hands-on frontend engineering — you'll turn complex network and security data into interfaces that are intuitive, fast, and trustworthy for security and network teams. As a senior member of the team, you'll also help shape frontend architecture, mentor junior engineers, and drive design/engineering best practices. You'll work closely with product managers, backend engineers, and QA/solutions teams to ship features that make sense to real users under real operational pressure.

Responsibilities:

• Design and implement responsive, accessible UI components for the platform using modern frontend frameworks (React, Vue, or similar).
• Translate complex network security concepts — topology maps, risk/posture scores, policy rules, alerts, remediation steps — into clear, usable visual interfaces.
• Own end-to-end UX for key workflows: onboarding, network/device discovery, dashboards, drill-down investigations, and reporting.
• Create wireframes, prototypes, and high-fidelity mockups (Figma or similar) and iterate based on user feedback and usability testing.
• Collaborate with backend engineers to define and consume APIs, ensuring data-heavy views (topology graphs, tables, charts) remain performant at scale.
• Partner with QA and Solutions Testing teams to validate that workflows behave correctly and intuitively across real customer network scenarios.
• Conduct or support usability testing and gather feedback from customers, sales engineers, and support teams to continuously refine the UX.
• Maintain and evolve a component/design system for consistency across the platform.
• Ensure UI meets accessibility (WCAG) and cross-browser compatibility standards.
• Monitor frontend performance (load times, rendering of large topology/data sets) and optimize as needed.
• Help define and evolve frontend architecture, tooling, and coding standards across the team.
• Mentor mid-level and junior frontend/UI engineers through code reviews, pairing, and design critiques.
• Drive technical decisions on state management, component architecture, and performance for a growing, data-intensive platform.

Requirements:

• 5+/8+ years of experience as a frontend engineer, UI/UX engineer, or product designer with strong coding ability, ideally on data-dense or technical SaaS products.
• Demonstrated experience owning frontend architecture decisions and mentoring other engineers.
• Proficiency in modern JavaScript/TypeScript and a component-based framework (React preferred; Vue/Angular acceptable).
• Strong UX design skills — information architecture, interaction design, visual hierarchy — with a portfolio demonstrating design-to-code work.
• Experience designing interfaces for complex, data-heavy domains (dashboards, network/graph visualizations, security tools, DevOps tools, or similar).
• Proficiency with design tools such as Figma, Sketch, or Adobe XD.
• Familiarity with REST APIs and working closely with backend teams to shape data contracts for UI needs.
• Understanding of responsive design, accessibility standards (WCAG), and cross-browser/device compatibility.
• Ability to conduct or contribute to usability testing and translate findings into design/engineering improvements.

Preferred Qualifications:

• Prior experience in network security, cybersecurity, or IT infrastructure SaaS products.
• Familiarity with data visualization libraries (D3.js, Recharts, Cytoscape.js, or similar) for rendering network topology and graph-based data.
• Basic understanding of Layer 2/Layer 3 networking concepts (VLANs, routing, ACLs) to better design for technical users.
• Experience with design systems and component libraries at scale.
• Exposure to CI/CD pipelines and frontend testing frameworks (Jest, Playwright, Cypress).

What Success Looks Like:

• Complex network and security data is presented in ways that are immediately understandable to security/network admins.
• Key workflows (discovery, posture review, remediation) feel fast, guided, and low-friction even for less technical users.
• Design and engineering teams ship UI changes with confidence, backed by usability validation and a consistent design system.
• Frontend architecture scales cleanly as the platform and team grow, with junior engineers leveling up under your guidance.

The total compensation package includes base, bonus, equity, and a range of benefit options found on our career site.