Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi! I'm Jonathan Caballero, a Senior Software Engineer with over 10 years of experience building robust frontend and backend solutions across various industries like retail, fintech, blockchain, and consulting. I specialize in creating scalable web applications, data platforms, and tools that enhance user experience and optimize system performance. I thrive when collaborating with cross-functional teams, mentoring junior engineers, and delivering products that make an impact. Whether it's designing full-stack market research platforms, developing blockchain payment modules, or modernizing legacy systems, I enjoy solving complex problems with modern technologies.…Hi! I'm Jonathan Caballero, a Senior Software Engineer with over 10 years of experience building robust frontend and backend solutions across various industries like retail, fintech, blockchain, and consulting. I specialize in creating scalable web applications, data platforms, and tools that enhance user experience and optimize system performance. I thrive when collaborating with cross-functional teams, mentoring junior engineers, and delivering products that make an impact. Whether it's designing full-stack market research platforms, developing blockchain payment modules, or modernizing legacy systems, I enjoy solving complex problems with modern technologies.

Jonathan Caballero

Developer, Full Stack Developer, Blockchain Developer, +2





Hi! I'm Jonathan Caballero, a Senior Software Engineer with over 10 years of experience building robust frontend and backend solutions across various industries like retail, fintech, blockchain, and consulting. I specialize in creating scalable web applications, data platforms, and tools that enhance user experience and optimize system performance. I thrive when collaborating with cross-functional teams, mentoring junior engineers, and delivering products that make an impact. Whether it's designing full-stack market research platforms, developing blockchain payment modules, or modernizing legacy systems, I enjoy solving complex problems with modern technologies.…Hi! I'm Jonathan Caballero, a Senior Software Engineer with over 10 years of experience building robust frontend and backend solutions across various industries like retail, fintech, blockchain, and consulting. I specialize in creating scalable web applications, data platforms, and tools that enhance user experience and optimize system performance. I thrive when collaborating with cross-functional teams, mentoring junior engineers, and delivering products that make an impact. Whether it's designing full-stack market research platforms, developing blockchain payment modules, or modernizing legacy systems, I enjoy solving complex problems with modern technologies.

Available to hire

Hi! I’m Jonathan Caballero, a Senior Software Engineer with over 10 years of experience building robust frontend and backend solutions across various industries like retail, fintech, blockchain, and consulting. I specialize in creating scalable web applications, data platforms, and tools that enhance user experience and optimize system performance.

I thrive when collaborating with cross-functional teams, mentoring junior engineers, and delivering products that make an impact. Whether it’s designing full-stack market research platforms, developing blockchain payment modules, or modernizing legacy systems, I enjoy solving complex problems with modern technologies.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at Best Buy

September 1, 2022 - June 14, 2024

Designed and developed a full-stack market research platform using React, TypeScript, Next.js, React Native, Node.js, Express, GraphQL, and MySQL that improved pricing accuracy and decision speed by 25%. Built interactive dashboards with React, Redux, and Chart.js, reducing report generation time by 60%. Created an AI-powered survey analyzer with spaCy and scikit-learn that cut manual review effort by 70% and accelerated insights identification by 3x. Developed Node.js microservices processing over 2 million daily records ensuring high availability and integrity. Implemented AWS Lambda functions with CloudWatch to automate data updates and maintain 99.9% uptime. Increased test coverage to 90% using Jest and React Testing Library. Collaborated with product managers and designers to deliver user-friendly UIs on schedule. Mentored junior engineers through code reviews and coaching, enhancing team skills and code quality.

Senior Full Stack Engineer at Gamax

January 1, 2020 - June 30, 2022

Led the development of a blockchain-based B2B payment module with Solidity and Web3.js, reducing reconciliation time by 50% and enhancing transaction transparency. Implemented scalable microservices in Java and Spring Boot, increasing treasury operations throughput by 30%. Integrated PostgreSQL with financial APIs to improve real-time cash tracking and cut reporting latency by 40%. Automated smart contract and backend deployments via Jenkins, Docker, and Kubernetes on AWS, reducing release cycles by 35% and improving uptime. Audited blockchain logic to eliminate 70% of critical vulnerabilities through code reviews and security validations. Delivered React-based liquidity dashboards, boosting client satisfaction by 15%. Coordinated with PMs and legal teams to ensure compliance with global blockchain regulations, accelerating client onboarding by 20%.

Full Stack Engineer at Accenture

November 1, 2015 - December 31, 2019

Delivered web solutions using React, Angular, TypeScript, Go, and Nest.js for over 100 clients across finance, healthcare, and retail sectors. Modernized legacy frontends boosting user interaction by up to 25%. Optimized app performance with lazy loading and code splitting, reducing page load times by 35%. Architected backend infrastructure to support high-traffic applications, decreasing server response time by 35%. Collaborated cross-functionally to transition systems to microservices architecture, enhancing scalability by 50%.

Frontend Engineer at Stripe

July 1, 2013 - September 30, 2015

Developed responsive UI components for Stripe’s dashboard using JavaScript, HTML5, CSS3, Bootstrap, and jQuery, reducing user-reported issues by 30%. Integrated frontend with backend RESTful APIs and PostgreSQL, lowering data inconsistencies by 40%. Automated build processes with Python scripts to streamline deployments and shorten release timelines.