Eric Rodríguez Montilla

Senior Software Engineer with 6+ years of experience building scalable SaaS, fintech, healthcare and enterprise applications. Specialized in React, Next.js, Golang and AWS, with proven experience designing full-stack systems, optimizing performance, leading frontend architecture initiatives and delivering cloud-native solutions for international clients.

Senior Software Engineer at Freelance (2022-07 – Present)

• Developing a courier management SaaS built with Vue, Golang, Redis, and AWS. Key features include multi-package management and integrated real-time GPS tracking for delivery visibility.
• Led the frontend development of a financial enrollment platform (London, UK) with Angular, NgQuery and Angular Table, delivering a seamless user experience that reduced enrollment time to 6 steps.
• Engineered a full-stack public digital library using Next.js, Golang, and PostgreSQL. Integrated AWS for authentication and Redis for high-performance caching.
• Led the frontend architecture for an offline-first, multi-tenant Point of Sale system using React, React Query and React Table. Optimized for low-latency performance on small devices.
• Modernized the Financial Ministry's accounting frontend system (Córdoba, Argentina) using React, Redux, and React Query, implementing advanced caching strategies to optimize large, paginated datasets. Simultaneously overhauled the CI/CD pipeline, achieving an 8x performance boost by reducing build times from 8 minutes to under 60 seconds.
• Built a custom synchronization engine in Node.js to maintain 20GB+ of historical invoice and inventory data (2015–Present), ensuring continuous data integrity between a web and a legacy desktop system for a warehouse company.
• Built a patient management web application for a medical center, digitizing workflows for 24,000+ patients across the Dominican Republic. Tech stack: React, MongoDB, Node.js and Express

Mid Senior Software Developer at Codika (2021-01 – 2022-12)

• Developed and led the frontend implementation of a high-traffic food ordering application deployed across all major airports in the Dominican Republic.
• Built the core frontend architecture for a university management system (UNIBE), streamlining student lifecycle, payments, and sponsorship tracking.
• Developed a reporting dashboard for a metallurgy firm to track product defects and optimize incoming repair process workflows.

Web Developer at 7am Multimedia Agency (2019-01 – 2020-12)

• Developed a technician-on-demand web application, significantly reducing the time-to-find for consumers seeking expert home services.
• Designed an interactive product catalog for an electrical solutions company, enabling personalized client recommendations based on technical needs.