Senior Frontend Engineer

Guidewire Software•Mississauga, ON

10d

About The Position

As a Senior Frontend Engineer at Guidewire, you will be a key leader in the development and maintenance of complex features within our React and TypeScript single-page application, ensuring a seamless and high-performance user experience. You will champion quality and accessibility by authoring clean, maintainable, and accessible UI components, rigorously tested with Vitest and Testing Library. This role involves close collaboration with product and design teams to translate wireframes and requirements into polished, functional, and user-centric interfaces. You will also be responsible for designing and implementing robust integrations with REST APIs and managing real-time data flows using WebSockets. Guidewire fosters a culture of curiosity, innovation, and responsible use of AI, empowering teams to leverage emerging technologies and data-driven insights for enhanced productivity. You will contribute to high-level frontend architecture decisions, improve internal tooling, and uphold coding standards through code reviews and mentorship. The role includes managing feature rollouts with feature flags and analytics instrumentation, and supporting CI/CD pipelines for safe and rapid deployments. You will also identify and implement performance optimizations and scalability improvements as the platform and user base grow. Guidewire is a leading platform for P&C insurers, combining digital, core, analytics, and AI delivered as a cloud service. Serving over 540 insurers in 40 countries, Guidewire is committed to customer success and continuous innovation, supported by a large R&D team and partner ecosystem. The company values Integrity, Rationality, and Collegiality, promoting an inclusive workplace that embraces diversity of perspectives, abilities, and cultures.

Requirements

Demonstrated ability to embrace AI and apply it to your current role as well as data-driven insights to drive innovation, productivity, and continuous improvement.
8+ years of professional experience building, shipping, and maintaining large-scale SaaS or enterprise web applications.
Deep proficiency in React and TypeScript, with a strong understanding of state management, hooks and frontend performance patterns.
A strong track record of writing comprehensive unit and integration tests (ideally with Vitest and Testing Library) and a commitment to web accessibility (a11y) standards.
Familiarity with AWS services (EKS, CloudFront, S3).
Experience working in a "T-shaped" capacity, with the ability to navigate Python/FastAPI backends and understand the full request-response lifecycle.
Proven ability to lead technical initiatives from discovery to deployment, managing feature flags, analytics, and observability along the way.
The ability to clearly articulate technical trade-offs to stakeholders and provide constructive, high-quality feedback to peers.
A continuous-learning mindset with a passion for staying current with the evolving frontend ecosystem and adopting tools that deliver real value to the team.

Nice To Haves

Experience with micro frontends

Responsibilities

Lead the development and maintenance of complex features within our React and TypeScript single-page application, ensuring a seamless and high-performance user experience.
Author clean, maintainable, and accessible UI components backed by rigorous testing using Vitest and Testing Library.
Collaborate closely with product and design teams to translate wireframes and requirements into polished, functional, and user-centric interfaces.
Design and implement robust integrations with REST APIs and manage real-time data flows using WebSockets.
Contribute to high-level frontend architecture decisions, improve internal tooling, and uphold coding standards through meaningful code reviews and mentorship.
Manage feature rollouts using feature flags and analytics instrumentation, while supporting CI/CD pipelines to ensure safe and rapid deployments.
Identify and implement performance optimizations and scalability improvements as our platform and user base continue to grow.