Senior React Software Developer

About the job

Key Responsibilities Architecture & Delivery Define and evolve frontend architecture, including module boundaries, component architecture, state/data flow, performance and accessibility, lazy loading, error handling, observability, etc. Lead the implementation of key frontend features and ensure resilience for streaming and large payload rendering. Drive the abstraction of reusable components and ensure best practices in code quality. Technical Leadership Set coding standards and ensure discipline in code quality practices. Mentor engineers through design reviews, detailed code reviews, pairing, and measurable growth plans. Champion accessibility standards and ensure compliance with best practices. Quality & Testing Mature the testing strategy, implementing unit tests, integration tests, and end-to-end tests. Introduce automation for visual regression and accessibility testing. Enforce type safety and eliminate dead code, raising coverage on critical surfaces. Security & Compliance Collaborate on security measures, ensuring safe handling of user data and compliance with best practices. Define secure patterns for file handling and API integrations. Data & Observability Capture user interactions and performance metrics. Use metrics to prioritize refactors and ensure system reliability. Collaboration & Process Drive cross-team initiatives and contribute to shared code repositories. Guide migration or consolidation efforts to ensure a cohesive design system. Innovation Evaluate and implement emerging frontend patterns and technologies. Optimize user experiences based on feedback and performance data. Our fast-moving inner-source environment encompasses multiple repositories, including a web application and browser extension, utilizing technologies such as React 18, TypeScript, Vite, Ant Design, XYFlow (graph/canvas), Chart.js, Mermaid, motion-based UI, ReactRouter v7, Vitest, Testing Library, ESLint/Prettier, and secure enterprise integrations (Okta, internal APIs, etc). Our focus is on scalable UI architecture, performance streaming chat UX, accessibility, data visualization, and safe multi-model LLM interactions (OpenAI, Anthropic, Gemini, internal services, MCP). Required Qualifications 8+ years of professional frontend experience, with at least 3 years in a leadership or mentoring role. Expertise in React and TypeScript, including typing, performance profiling, and context, reducer, hooks architecture. Strong experience with modern build tooling (e.g., Vite, ES modules, tree-shaking). Experience with complex state and data orchestration, including context management. Understanding of secure frontend patterns and REST API integration. Preferred Qualifications Testing expertise, including unit and integration testing frameworks. Previous experience with XYFlow or building Canvas visualized graph-based projects. Strong focus on accessibility and performance optimization. Familiarity with Ant Design, design library customization strategies, design tokens systems and theming. Nice to Have Experience with React Native or cross-platform component strategies. Knowledge of data visualization libraries and rendering pipelines. Experience with browser extensions and their architecture. Education Bachelor's degree in Computer Science or equivalent experience (an advanced degree is a plus). Core Behaviors Outcome and metrics-driven with autonomous prioritization. A mentorship mindset that elevates peers. A bias for incremental delivery with architectural foresight. Clear and candid communication.

Requirements

• React
• TypeScript
• Component Architecture
• Testing Frameworks

Qualifications

• Bachelor's degree in Computer Science
• 8+ years experience

Preferred Technologies

• React
• TypeScript
• Component Architecture
• Testing Frameworks