Software Engineer Senior

TIMOTHY CATO

Senior Full Stack Engineer

+1-917-***-**** ***.******@*******.*** https://www.linkedin.com/in/timothy-cato-bb134732a Douglasville, GA SUMMARY

Senior Software Engineer with 10+ years of experience building high-performance, scalable web and mobile applications using React, React Native, Node.js, and TypeScript. Proven expertise in front-end architecture, CI/CD automation, global state management, and cloud-native solutions. Adept at optimizing performance, leading cross-functional teams, and delivering multilingual, responsive UIs. Passionate about clean code, developer productivity, and creating intuitive user experiences across platforms. EXPERIENCE

05/2021 - Present

United States

Senior Software Engineer

MuleSoft

Developed high-performance, responsive web and mobile applications using JavaScript, ES6, React, React Native, and TypeScript, optimized components for user engagement and revenue growth. Built and maintained scalable applications with global state management using Context API, Recoil, and React Query, and integrated third-party libraries like Axios and date-fns. Collaborated with cross-functional teams to gather 40+ requirements and launch iOS/Android apps, enhancing technical clarity and accelerating delivery cycles. Designed and implemented a fully automated CI/CD pipeline, reducing average deployment time across mobile platforms.

Led backend development using Node.js, microservices architecture, and serverless technologies (AWS Lambda, API Gateway, DynamoDB), ensuring high availability and performance. Secured applications with OAuth2 and JWT, and achieved 95% test coverage using TDD practices with Jest and Enzyme. 05/2018 - 04/2021

United States

Senior React/Node Engineer

Xebia

Spearheaded the creation of pixel-perfect, reusable React components, reducing development time and enhancing UI consistency and UX.

Led the adoption of TypeScript across React projects, significantly reducing type-related bugs and boosting overall developer productivity.

Built a multilingual Next.js website using built-in i18n routing, expanding accessibility for non-English users. Optimized large data set rendering and reduced HTTP requests, while integrating APIs (REST, GRPC, GraphQL, WebSocket) into scalable cloud solutions.

Managed AWS RDS PostgreSQL clusters and used Databricks for big data analytics; followed Agile workflows with JIRA to ensure 95% on-time feature delivery.

09/2014 - 03/2018

United States

Fullstack Developer

hiberus

Assisted in developing and maintaining full-stack web applications using JavaScript, React, and Node.js under senior developer guidance.

Collaborated on API integrations and database operations using Express.js and MongoDB, contributing to the delivery of key features.

Participated in Agile ceremonies, used JIRA for task tracking, and gained hands-on experience in debugging, version control (Git), and deployment processes.

Translated UI/UX designs from Figma into responsive interfaces, improving usability and accessibility across devices. EDUCATION

08/2010 - 07/2014 Bachelor of Science - BS, Computer Science Michigan Technological University

SKILLS

React.js Node.js React Native JavaScript TypeScript Next.js Vue.js MySQL Express.js Material-UI Tailwind CSS Bootstrap (Framework) CI/CD GraphQL SEO PostgreSQL MongoDB

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PROJECTS

Cross-Platform Mobile App – Enterprise Integration Dashboard 04/2022 - 03/2023

Led performant, scalable React Native app development lifecycle. Led architecture and development of the React Native mobile app, defining reusable patterns and optimizing performance for both iOS and Android.

Built state management with Zustand and React Query for reliable data handling, including offline caching, background syncing, and live WebSocket updates.

Implemented modular components and UI layers from Figma mockups, ensuring pixel-perfect rendering and accessibility (WCAG 2.1 AA). Spearheaded performance improvements, reducing API call redundancy and memory usage via memoization, throttling, and lazy loading. Unified Web Portal for API Management & Documentation 06/2021 - 02/2022

Led React/Next.js portal design with performance, security focus. Owned front-end system design for the multilingual portal built with React, TypeScript, and Next.js, including code-splitting and SSR for performance.

Migrated legacy JavaScript codebases to strict-typed TypeScript, creating shared type definitions between frontend and backend. Built custom components for interactive API documentation, including Swagger and GraphQL consoles, and integrated with REST/GraphQL/gRPC services.

Designed BFF (Backend-for-Frontend) layer in Node.js/Express to unify API response shapes and simplify frontend integration.

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