Senior Front-End Systems Engineer

Gainsight is the AI-powered retention engine behind the world’s most customer-centric companies. The Gainsight CustomerOS platform orchestrates the customer journey from onboarding to outcomes to advocacy. More than 2,000 companies trust Gainsight’s applications and AI agents to drive learning, adoption, community connection, and success for their customers.

• 6+ years building production frontend systems.
• Experience with at least one major modern frontend framework (React, Vue, Angular, Svelte, etc.).
• Deep understanding of HTML, CSS, responsive design, and accessibility (WCAG).
• Experience building or maintaining a shared component library or design system.
• Experience integrating frontend applications with APIs and SaaS systems.
• Demonstrated practical use of AI coding tools (e.g., Cursor, Copilot, Claude) with validation discipline.
• Ability to operate independently across multiple concurrent initiatives.
• Strong communication and cross-functional collaboration skills.

Nice to have:

• Professional Services or agency experience.
• Backend familiarity (Node.js, Python, etc.) for integration debugging.
• Experience building internal tooling or developer platforms.
• Experience optimizing frontend performance at scale.
• Exposure to LMS, community, CRM, or SaaS ecosystems.

Build AI-Enabled Frontend Delivery Systems:

• Design and maintain reusable UI templates, theming systems, and frontend accelerators used across customer implementations (e.g., theme frameworks, reusable layout scaffolding, accessibility-safe component patterns).
• Build internal tooling and workflows that support AI-assisted implementation, testing, and documentation while ensuring generated code meets performance, accessibility, and maintainability standards.
• Define validation guardrails for AI-assisted development, including accessibility checks, responsive layout integrity, and performance baselines.
• Reduce repetitive customization work by codifying repeatable frontend patterns.
• Stay hands-on in complex UI implementations when needed.

Improve Scalable Customization:

• Identify recurring frontend friction across engagements and distill them into repeatable solutions (e.g., standardized theming approaches, layout patterns, or supported override strategies).
• Propose architectural improvements that reduce customization effort and increase reuse, such as defining extensibility hooks, supported customization boundaries, or shared frontend utilities.
• Partner with Product Engineering to surface scalable customization needs informed by real delivery constraints and implementation patterns.
• Translate delivery realities into concrete technical proposals, supported by data such as implementation effort, frequency of reuse, or defect trends.

Establish Frontend Standards:

• Define and document frontend best practices across Professional Services.
• Ensure accessibility (WCAG), performance, and maintainability remain baseline standards.
• Mentor engineers in responsible AI usage and scalable frontend architecture.
• Promote reusable systems over one-off implementations.

We’re committed to creating an inclusive, fair, and transparent hiring process. As an equal opportunity employer, we celebrate diversity and are committed to creating a welcoming experience for all candidates.

If you’re applying for a role through an Employer of Record (EOR) or contractor arrangement, please note that employment terms and benefits are managed by the EOR or may not apply to non-EOR contractors.