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I am Ronnie Lopez, a passionate full stack engineer with over four years of hands-on experience, enthusiastic about tackling complex challenges and continuous learning. My journey in programming is driven by curiosity and an excellent attitude toward problem-solving. I thrive on designing and building scalable backend architectures and unified fintech platforms, while delivering cross-platform mobile apps and cloud infrastructure improvements with a focus on reliability and efficiency. I enjoy collaborating with teams to deliver production-ready solutions, architect resilient systems, and optimize workflows to boost organizational efficiency. I am always exploring new technologies to enhance product quality, developer velocity, and user experiences.…I am Ronnie Lopez, a passionate full stack engineer with over four years of hands-on experience, enthusiastic about tackling complex challenges and continuous learning. My journey in programming is driven by curiosity and an excellent attitude toward problem-solving. I thrive on designing and building scalable backend architectures and unified fintech platforms, while delivering cross-platform mobile apps and cloud infrastructure improvements with a focus on reliability and efficiency. I enjoy collaborating with teams to deliver production-ready solutions, architect resilient systems, and optimize workflows to boost organizational efficiency. I am always exploring new technologies to enhance product quality, developer velocity, and user experiences.

Ronnie Lopez

Full Stack Developer, Front-End Developer, Back-End Developer, +2

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I am Ronnie Lopez, a passionate full stack engineer with over four years of hands-on experience, enthusiastic about tackling complex challenges and continuous learning. My journey in programming is driven by curiosity and an excellent attitude toward problem-solving. I thrive on designing and building scalable backend architectures and unified fintech platforms, while delivering cross-platform mobile apps and cloud infrastructure improvements with a focus on reliability and efficiency. I enjoy collaborating with teams to deliver production-ready solutions, architect resilient systems, and optimize workflows to boost organizational efficiency. I am always exploring new technologies to enhance product quality, developer velocity, and user experiences.…I am Ronnie Lopez, a passionate full stack engineer with over four years of hands-on experience, enthusiastic about tackling complex challenges and continuous learning. My journey in programming is driven by curiosity and an excellent attitude toward problem-solving. I thrive on designing and building scalable backend architectures and unified fintech platforms, while delivering cross-platform mobile apps and cloud infrastructure improvements with a focus on reliability and efficiency. I enjoy collaborating with teams to deliver production-ready solutions, architect resilient systems, and optimize workflows to boost organizational efficiency. I am always exploring new technologies to enhance product quality, developer velocity, and user experiences.

Available to hire

I am Ronnie Lopez, a passionate full stack engineer with over four years of hands-on experience, enthusiastic about tackling complex challenges and continuous learning. My journey in programming is driven by curiosity and an excellent attitude toward problem-solving. I thrive on designing and building scalable backend architectures and unified fintech platforms, while delivering cross-platform mobile apps and cloud infrastructure improvements with a focus on reliability and efficiency.

I enjoy collaborating with teams to deliver production-ready solutions, architect resilient systems, and optimize workflows to boost organizational efficiency. I am always exploring new technologies to enhance product quality, developer velocity, and user experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Work Experience

Full Stack Developer at DNERO Wallet

March 1, 2024 - November 5, 2025

Lead back-end development using NestJS and PostgreSQL to build scalable fintech applications. Design and maintain cross-platform mobile apps with Flutter, while setting up CI/CD pipelines to streamline deployment. In addition, manage AWS infrastructure with real-time monitoring to ensure high system availability. Key contributions include deploying resilient cloud architecture and unifying financial system data under a centralized database schema.

Full Stack Developer / Technical Lead at Innova Center SV

December 1, 2023 - December 1, 2023

Worked as a full stack developer and technical lead, building platforms with React, Next.js, Flutter, and Node.js. Designed backend systems and managed infrastructure across AWS and GCP. Delivered more than four large-scale internal systems and automated workflows that significantly boosted organizational efficiency.

Frontend Developer (Contract) at DASTEch

January 1, 2022 - January 1, 2022

Focused on enhancing client applications using React, Next.js, and TypeScript. Reduced critical UI bugs, improved app performance, and optimized feedback delivery for end users, resulting in better usability and smoother product adoption.

Full Stack Developer at Freelance Developer

November 1, 2021 - November 1, 2021

During my freelancing career, developed over ten custom projects in logistics and marketing, leveraging React, NestJS, Golang, and PostgreSQL. Built a referral-driven client base and consistently delivered scalable, production-ready solutions tailored to each client’s needs.