Lead Frontend Developer- React

About the Role:

The Team

Join our innovative team at S&P Global as we embark on a transformative journey to enhance Kensho Spark Assist, our internal conversational AI platform. This platform is designed to support colleagues across all departments, promoting collaboration and efficiency. Our team operates in a dynamic, agile environment, focusing on creating scalable systems that deliver real value while prioritizing stakeholder needs through data-informed decisions and continuous improvement.

About the Role

As a Lead Frontend Engineer specializing in React and TypeScript, you will take on a pivotal role in shaping the future of our web applications and browser extensions. This position requires deep technical expertise in modern frontend technologies, a strong focus on delivering high-quality, performant, and accessible user experiences, and the ability to lead and mentor a team of frontend engineers. You will be responsible for driving technical excellence, contributing to architectural decisions, and ensuring best practices in a fast-paced, agile environment.

Impact

In this role, you will lead the development of cutting-edge generative AI solutions that serve a global workforce of over 30,000 employees at S&P Global. You will have the opportunity to influence the architectural direction of our applications, enhance user experiences, and promote the adoption of generative AI technologies across various roles within the company.

What's in it for You

• Career Advancement: Build a meaningful career with a leading global company at the forefront of technology.
• Dynamic Work Environment: Engage in a fast-paced and innovative environment, contributing directly to impactful solutions.
• Skill Enhancement: Elevate your software development skills on an enterprise-level platform.
• Leadership Opportunities: Mentor and lead a team of frontend engineers, fostering a culture of collaboration and innovation.
• Work Flexibility: Enjoy a flexible work arrangement that balances office time with remote work options.
• Community Engagement: Benefit from five paid days for charity work or volunteering, supporting your passion for community service.

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, React Router 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 token 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.

What's In It For You

Our Purpose:

Progress is not a self-starter. It requires a catalyst to be set in motion. Information, imagination, people, technology-the right combination can unlock possibility and change the world.
Our world is in transition and getting more complex by the day. We push past expected observations and seek out new levels of understanding so that we can help companies, governments and individuals make an impact on tomorrow. At S&P Global we transform data into Essential Intelligence, pinpointing risks and opening possibilities. We Accelerate Progress.

Our People:

We're more than 35,000 strong worldwide-so we're able to understand nuances while having a broad perspective. Our team is driven by curiosity and a shared belief that Essential Intelligence can help build a more prosperous future for us all.
From finding new ways to measure sustainability to analyzing energy transition across the supply chain to building workflow solutions that make it easy to tap into insight and apply it. We are changing the way people see things and empowering them to make an impact on the world we live in. We're committed to a more equitable future and to helping our customers find new, sustainable ways of doing business. We're constantly seeking new solutions that have progress in mind. Join us and help create the critical insights that truly make a difference.

Our Values:

Integrity, Discovery, Partnership

At S&P Global, we focus on Powering Global Markets. Throughout our history, the world's leading organizations have relied on us for the Essential Intelligence they need to make confident decisions about the road ahead. We start with a foundation of integrity in all we do, bring a spirit of discovery to our work, and collaborate in close partnership with each other and our customers to achieve shared goals.
Benefits:

We take care of you, so you can take care of business. We care about our people. That's why we provide everything you-and your career-need to thrive at S&P Global.
Our benefits include:

• Health & Wellness: Health care coverage designed for the mind and body.

• Flexible Downtime: Generous time off helps keep you energized for your time on.

• Continuous Learning: Access a wealth of resources to grow your career and learn valuable new skills.

• Invest in Your Future: Secure your financial future through competitive pay, retirement planning, a continuing education program with a company-matched student loan contribution, and financial wellness programs.

• Family Friendly Perks: It's not just about you. S&P Global has perks for your partners and little ones, too, with some best-in class benefits for families.

• Beyond the Basics: From retail discounts to referral incentive awards-small perks can make a big difference.

For more information on benefits by country visit:

Global Hiring and Opportunity at S&P Global:

At S&P Global, we are committed to fostering a connected and engaged workplace where all individuals have access to opportunities based on their skills, experience, and contributions. Our hiring practices emphasize fairness, transparency, and merit, ensuring that we attract and retain top talent. By valuing different perspectives and promoting a culture of respect and collaboration, we drive innovation and power global markets.

Recruitment Fraud Alert:

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