Senior Front-End Systems Engineer

We’re building the AI-driven future of customer success, from retention to growth! 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. To explore how our suite of solutions is shaping the future of customer success, check out the link.  About This Role: We’re looking for a full-time Senior Frontend Systems Engineer to join our Services team  reporting to the Manager, Solutions Engineering. This role is a hybrid role based out of our Wroclaw, Poland location.  In this role, you’ll play a key role in evolving and scaling the Professional Services frontend delivery foundation by designing reusable UI systems, AI-enabled workflows, and frontend standards that increase delivery velocity, consistency, and long-term maintainability across customer engagements. You’ll remain hands-on while building shared frameworks, codifying repeatable patterns, and influencing extensibility decisions in partnership with Product and Engineering. This is a great opportunity for someone who thrives in a systems-oriented, high-ownership environment and enjoys working cross-functionally with teams like Product, Core Engineering, and Professional Services delivery. The ideal candidate brings strong skills in modern frontend architecture, design systems and reusable component libraries, and AI-assisted development with strong validation and accessibility discipline. What You'll Do:  Build AI-Enabled Frontend Delivery Systems Design and maintain reusable UI templates, theming systems, and frontend accelerators used across customer implementations (for example: 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 (for example: 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. This is not a complete list of responsibilities, and the scope of the role may evolve with the needs of the team and business. This role will require occasional travel for team meetings, training, or company events. What We're Looking For: 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 skills: 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. Why You’ll Love It Here: Gainsight is a place where innovation is shaped through collaboration, curiosity, and a shared focus on solving real-world problems. With a growing suite of products across customer success, product experience, community, education, and AI-powered relationship intelligence, we continue to evolve with the needs of our customers. When people with diverse strengths, a strong sense of community, and true passion for our mission come together, they drive greater impact and create lasting value. What underpins it all is a culture that offers the stability, trust, and support that people need - not just to do the job, but to show up as themselves and feel connected to the work they do. Gainsters love working here for several reasons. Here are a few: Our Compensation and Benefits: At Gainsight, we believe great work happens when teammates feel fully supported.  The starting base salary range for this role is PLN 16,000-18,000 monthly. Actual compensation may vary based on factors such as skills, experience, and location. In addition to base pay, this role is eligible for an annual bonus and participation in Gainsight’s equity program.  We offer a comprehensive benefits package including premium private medical care with priority appointments, Multisport Cards to support your physical well-being, and flexible remote work options. Partners can be included in both health and wellness programs. You'll also enjoy dedicated Recharge Holidays - one long weekend each quarter to relax and reset. Our Core Values: We are guided by our values and our mission to be living proof you can win in business while being Human-First. Learn more here. Our Growth Opportunities: From mentoring to career development opportunities, we’re passionate about helping our teammates learn, grow, and thrive. Our Parody Videos: No explanation needed. Just watch them here! If this sounds like the right role for you, we’d love to hear from you. Additional Information: 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 require accommodations or have questions about how your personal data will be used during the hiring process, please contact recruiting@gainsight.com.  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.