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I am an experienced software engineer with over 5 years in full-stack development, specializing in React Native, React, and Ruby on Rails. I have a proven track record of building scalable cross-platform mobile applications integrated with Ruby on Rails backends. Skilled in delivering consumer-grade mobile apps with strong performance, usability, and long-term maintainability. My work experience includes leading development efforts, acting as Scrum Master, mentoring new developers, and collaborating closely with cross-functional teams to deliver high-quality features that improve user engagement and drive business growth. I continuously stay up-to-date with emerging technologies and proactively suggest process improvements and innovative solutions.…I am an experienced software engineer with over 5 years in full-stack development, specializing in React Native, React, and Ruby on Rails. I have a proven track record of building scalable cross-platform mobile applications integrated with Ruby on Rails backends. Skilled in delivering consumer-grade mobile apps with strong performance, usability, and long-term maintainability. My work experience includes leading development efforts, acting as Scrum Master, mentoring new developers, and collaborating closely with cross-functional teams to deliver high-quality features that improve user engagement and drive business growth. I continuously stay up-to-date with emerging technologies and proactively suggest process improvements and innovative solutions.

Charles Mancuso

Full Stack Developer, Developer, Web Developer, +2

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I am an experienced software engineer with over 5 years in full-stack development, specializing in React Native, React, and Ruby on Rails. I have a proven track record of building scalable cross-platform mobile applications integrated with Ruby on Rails backends. Skilled in delivering consumer-grade mobile apps with strong performance, usability, and long-term maintainability. My work experience includes leading development efforts, acting as Scrum Master, mentoring new developers, and collaborating closely with cross-functional teams to deliver high-quality features that improve user engagement and drive business growth. I continuously stay up-to-date with emerging technologies and proactively suggest process improvements and innovative solutions.…I am an experienced software engineer with over 5 years in full-stack development, specializing in React Native, React, and Ruby on Rails. I have a proven track record of building scalable cross-platform mobile applications integrated with Ruby on Rails backends. Skilled in delivering consumer-grade mobile apps with strong performance, usability, and long-term maintainability. My work experience includes leading development efforts, acting as Scrum Master, mentoring new developers, and collaborating closely with cross-functional teams to deliver high-quality features that improve user engagement and drive business growth. I continuously stay up-to-date with emerging technologies and proactively suggest process improvements and innovative solutions.

Available to hire

I am an experienced software engineer with over 5 years in full-stack development, specializing in React Native, React, and Ruby on Rails. I have a proven track record of building scalable cross-platform mobile applications integrated with Ruby on Rails backends. Skilled in delivering consumer-grade mobile apps with strong performance, usability, and long-term maintainability.

My work experience includes leading development efforts, acting as Scrum Master, mentoring new developers, and collaborating closely with cross-functional teams to deliver high-quality features that improve user engagement and drive business growth. I continuously stay up-to-date with emerging technologies and proactively suggest process improvements and innovative solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Software Engineer at WebPT, Inc.

October 1, 2022 - Present

Developed patient-facing mobile and web features using React Native, React, and Ruby on Rails, improving accessibility and engagement for over 150,000 users. Optimized mobile performance and UI responsiveness, reducing load times and enhancing user satisfaction across iOS and Android. Acted as Scrum Master facilitating agile ceremonies and maintaining cross-functional collaboration for a highly productive development process. Suggested process improvements and innovative technical solutions, staying current with emerging technologies. Led and advocated for upgrading Ruby from a deprecated version to ensure security, stability, and long-term maintainability while minimizing production disruptions. Trained and mentored new developers to accelerate onboarding and improve team efficiency.

Senior Mobile Engineer at Tribute Technology

August 31, 2022 - August 28, 2025

Sole developer responsible for creating mobile applications from existing web applications, using Ruby on Rails, React, and React Native to deliver high-quality solutions. Developed robust full-stack solutions for SaaS and eCommerce applications ensuring usability, scalability, stability, security, and performance. Championed backend and frontend automated test implementation to promote feature and functionality stability while reducing errors and increasing efficiency. Mentored junior developers through code reviews and knowledge sharing. Collaborated effectively with cross-functional teams, including marketing, sales, and customer success, to deliver features and improvements exceeding expectations and driving business growth.

Technical Support Engineer at New Relic, Inc.

June 30, 2022 - August 28, 2025

Developed and customized synthetic monitoring scripts to enhance performance insights for enterprise clients. Collaborated with cross-functional teams to troubleshoot complex technical issues across the product suite. Diagnosed and resolved complex performance bottlenecks across distributed systems, working closely with engineering teams. Delivered comprehensive customer support for installation, configuration, and data exploration ensuring optimal use of the New Relic platform. Continuously improved products by identifying recurring and systemic issues and providing valuable feedback on feature requests and bug reports to enhance overall customer experience.

Project Lead / Full-Stack Mobile and Web Developer at WiggyBack

March 31, 2021 - August 28, 2025

Collaborated closely with an agile team to build and integrate new components onto a complex SaaS platform using Ruby on Rails, React, and React Native. Led development of a greenfield React Native mobile app integrated with a Rails SaaS platform meeting stakeholder deadlines for MVP release. Served as the primary point of contact for executives, providing project updates and ensuring stakeholder engagement. Monitored project milestones and tracked task completion to deliver the minimum viable product within stakeholder timelines and expectations.

Full-Stack Mobile and Web Developer at Team Loop Kicks

September 30, 2020 - August 28, 2025

Built a cross-platform React Native mobile app and companion React web application powered by a custom Rails REST API. Assisted and managed multiple phases of development including performance optimization, mapping, designing, configuring, implementing, and testing. Engineered a scalable database architecture using MongoDB and MySQL for optimal data handling. Optimized app performance through continuous testing, debugging, and infrastructure improvements.