Open to opportunities

Matheus Lima

@matheuslima1

Senior Software Engineer bridging React/TS frontends with Node.js/C# backends. I build high-reliability, mission-critical distributed systems.

Brazil

Message

What I'm looking for

I’m looking for a team where I can own high-reliability architecture, performance tuning, and secure CI/CD—especially in React/TypeScript plus Edge/Serverless systems. I want to collaborate with Product and Security to ship fast, informed, maintainable software.

Currently a Senior Software Engineer at Johnson & Johnson, building high-reliability enterprise platforms. I previously led engineering squads at Corebiz and created the open-source CogniCatch SDK. I hold an MBA in Software Engineering and specialize in designing fault-tolerant, high-performance web applications.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Johnson & Johnson

Oct 2024 - Present (1 year 7 months)

Architected and maintained scalable web applications and identity APIs handling critical data for global stakeholders. Optimized React/Redux and Node.js performance and led DevSecOps improvements to CI/CD while collaborating with Product and Security to balance security and UX.

C++.NET ReactJS Redux DevSecOps CI CD OAUTH2 CIAM PostgreSQL NodeJS

Lead Developer

Corebiz

Sep 2023 - Oct 2024 (1 year 1 month)

Managed a squad of frontend engineers and delivered high-performance UI features under tight deadlines, including Black Friday traffic spikes. Designed and ran A/B tests using data telemetry to iteratively optimize complex user flows and maintain high availability under heavy load.

ReactJS Redux A B Testing Telemetry Performance Optimization State Management UI Stability Code Quality Agile Leadership

Frontend Developer

Corebiz

Oct 2021 - Sep 2023 (1 year 11 months)

Increased retail customer conversion rate by 30% through A/B testing and optimization. Improved ReactJS project performance and user experience, and enhanced SEO and organic traffic by implementing best practices and configuring Google Tag Manager for KPI tracking.

ReactJS A B Testing Conversion Rate Optimization Web Performance SEO Google Tag Manager KPI Tracking Web Analytics

Software Development Assistant

Season Tecnologias

Apr 2021 - Oct 2021 (6 months)

Refactored legacy ReactJS code to improve maintainability, performance, and overall code quality. Developed ReactJS and TypeScript projects using OAuth2 authentication with Keycloak to support secure login and authorization.

ReactJS TypeScript Refactoring Code Quality OAUTH2 Keycloak Authentication Web Performance

Web Development Intern

Season Tecnologias

Nov 2020 - Apr 2021 (5 months)

Collaborated with cross-functional teams to deliver telecommunications applications with push notification functionality, helping keep users informed with timely updates. Supported development efforts for reliable, user-facing feature delivery.

Push Notifications Web Development Cross Functional Collaboration