Senior Frontend Engineer - ReactJS Specialist - 12+ Years Experience

Nikhil Elpula Senior Frontend Engineer UI Architect ReactJS Specialist 12 Years Experience

******.********@*****.*** 469-***-****

Linkedin: Nikhil Elpula

Professional Summary: High-impact Frontend Engineer with a proven track record of architecting enterprise-scale platforms. Expert in building high-concurrency fintech applications, including systems supporting 1M+ active banking users and 10k+ corporate loan portfolios. Specialized in React/TypeScript ecosystems and integrating AI-driven solutions to drive operational efficiency. Core Competencies

● Frontend: ReactJS (Hooks/Context Api), TypeScript, State Management, Redux, MobX, NextJS, JavaScript (ES6+), Single Page Applications (SPA).

● UI/UX & Styling: Material UI (MUI), Tailwind CSS, SASS/SCSS, HTML5, CSS3, Responsive Design, Web Accessibility (WCAG).

● Testing & Quality: Unit/Integration Testing (Jest, React Testing Library, Junit), Enzyme, Cypress, SonarQube, Chrome DevTools (Performance/Memory profiling).

● Cloud & DevOps: AWS, GCP, Docker, Kubernetes, Jenkins (CI/CD), Git, Jira.

● Backend & AI: NodeJS, Java, .Net, Python, FastAPI, RESTful APIs, SOAP, GraphQL, LLM Integration

(OpenAI/Claude).

Professional Experience

Client: Silicon Valley Bank

Role: Senior UI Developer (ReactJS)

Duration: Jan 2021 – Present

● Architected and scaled a high-traffic React frontend supporting 1M+ active users, optimizing rendering performance and state management to maintain no downtime for mission-critical financial operations.

● Collaborated closely with UX designers to translate Figma prototypes into pixel-perfect components, actively participating in design reviews and managing iterative UI updates to ensure a seamless user experience.

● Optimized Redux state management to handle complex, multi-layered financial data structures for 10k+ corporate loan portfolios, reducing client-side memory leaks.

● Deployed an AI-powered customer support chatbot using FastAPI and LLMs, successfully automating query resolution for a global user base and reducing support tickets.

● Led the UI Admin team in developing an integrated reporting suite and a high-speed chatbot, significantly reducing response times for a massive user demographic.

● Mentored a team of 5+ developers on best practices for TypeScript and unit testing, improving overall code quality and reducing the peer-review cycle time by 15%.

● Standardized a robust Material UI component library used across multiple product lines, improving cross-team development velocity by 20% while maintaining brand consistency.

● Collaborated with cross-functional stakeholders to translate complex business requirements into scalable technical solutions for SVB’s premier tech-client segment. BBVA USA Senior UI Developer Jan 2017 – Jan 2021

● Spearheaded the UI development for the Online-Account-Origination (OAO) project, enabling customers to seamlessly open deposit, loan, and credit card accounts.

● Modernized legacy admin tools by migrating the features to React/Redux, improving state management and application performance for customer service representatives.

● Engineered secure, PCI-compliant frontend interfaces for high-volume transaction processing, ensuring zero security vulnerabilities in frontend-to-API data handling.

● Enhanced cross-browser compatibility and SEO performance across mobile, tablet, and desktop platforms using responsive design best practices.

● Developed complex data visualization components using D3.js or Recharts to provide customers with real-time insights into spending habits, increasing user session duration by 20%.

● Optimized state management patterns using Redux-Saga to handle asynchronous side effects in complex multi-step loan application workflows.

● Utilized CI/CD pipelines (GitLab, Jenkins, Bamboo) and SonarQube to automate builds and maintain high code quality standards.

Express Scripts UI Developer Mar 2016 – Jul 2017

● Developed and maintained critical patient-facing portals using ReactJS, serving millions of users and ensuring 99.9% uptime for essential pharmacy benefit services.

● Spearheaded a WCAG 2.1 accessibility initiative, refactoring core UI components to ensure 100% ADA compliance and expanding the accessible user base.

● Integrated RESTful APIs and GraphQL endpoints to fetch and display sensitive healthcare data, implementing robust error-handling and loading states to improve perceived performance.

● Collaborated with UX/UI designers to build a reusable design system in SASS/CSS Modules, which reduced UI inconsistency across different healthcare modules.

● Reduced bundle sizes through proactive code-splitting and lazy-loading strategies, significantly improving performance on mobile devices and slower networks. Acceleron Pharma Inc. Java UI Developer Apr 2013 – Oct 2014

● Engineered reusable UI components using AngularJS and jQuery, reducing redundant code and streamlining the development of dynamic web pages.

● Implemented server-side proxy layers using Java and NodeJS to facilitate secure communication between the front-end and MongoDB/REST services.

● Developed responsive layouts using Bootstrap and custom media queries, ensuring a consistent user experience across varied screen resolutions.

● Streamlined data reporting by creating client-side interfaces that processed and displayed complex datasets using HTML5, CSS3, and JavaScript.

● Executed rigorous testing and debugging using QUnit and Protractor to identify and resolve cross-browser compatibility issues and broken workflows.

● Leveraged Agile methodology throughout the SDLC, participating in daily stand-ups and sprint planning to ensure timely delivery of project milestones.

Education & Certifications

● Master of Science in Computer & Information Systems Kent State University (2016)

● Microsoft Certified Professional (MCP)

● Microsoft Certified Specialist: HTML5 with JavaScript and CSS3

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