Eduardo Zamora Blandino

Senior Fullstack Engineer
San José, CR.

About

Highly accomplished Senior Fullstack Engineer with 14 years of experience, specializing in architecture modernization, system design, and leading high-quality fullstack development. Expertly leverages Next.js, TypeScript, Node.js, Elixir/Phoenix, GraphQL, and Ruby to deliver scalable and performant solutions. Proven ability to integrate AI/ML, optimize complex systems, and drive cross-functional collaboration to achieve significant business and technical outcomes.

Work

G2i - QuantHub
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Senior Fullstack Software Engineer • Contractor

San José, San José, Costa Rica

Summary

Led fullstack development for QuantHub, an innovative EdTech platform leveraging AI and adaptive learning to accelerate curriculum creation and close critical data and AI skill gaps, while specializing in Next.js across frontend and backend systems.

Highlights

Led fullstack development for core internal tools supporting AI-driven curriculum creation and content workflows, specializing in Next.js across frontend and backend systems to enhance educational technology platform capabilities.

Modernized application architecture via Next.js upgrades and dependency migrations, significantly boosting performance and establishing robust configuration standards.

Refactored and streamlined routing, state management, and application structure, enhancing maintainability, developer experience, and long-term scalability.

Enhanced project tooling and CI/CD pipelines, standardizing environments and accelerating development workflows across the engineering team.

Collaborated cross-functionally with product, design, and AI/ML teams to deliver well-architected, testable, and extensible solutions aligned with strategic platform goals.

Hoop
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Senior FullStack Engineer and Tech Lead • Contractor

San Jose, Costa Rica, Costa Rica

Summary

Designed and delivered full-stack applications for Hoop, an e-commerce platform transforming online shopping with resale technology, focusing on scalable architecture and strong application foundations.

Highlights

Designed and delivered full-stack applications leveraging React, TypeScript, Node.js, and Prisma, establishing scalable architecture and robust application foundations.

Built and optimized backend systems using Prisma and PostgreSQL, integrating with Supabase, Inngest, Twilio, and Gmail to enhance platform functionality.

Implemented robust role- and permission-based access control, significantly strengthening security, user management, and system boundaries across the platform.

Developed an adapter pattern to unify diverse data models, streamlining cross-team development and ensuring consistent behavior and reliable data flow.

Engineered AI-assisted product data extraction pipelines utilizing OpenAI and LLMs, improving item classification accuracy through configurable model parameter tuning.

AMPS (via HireRising)
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Lead FullStack Engineer • Full-time

San Jose, Costa Rica, Costa Rica

Summary

Led fullstack engineering efforts for AMPS, a leading healthcare cost reduction firm, enhancing system efficiency, migrating legacy applications, and developing robust mobile solutions to improve member well-being.

Highlights

Enhanced API functionality and performance of AMPS' internal CLI tool, improving overall system efficiency and usability.

Led strategic planning and training for migrating an Express-based application to Elixir Phoenix and LiveView, optimizing scalability and performance.

Managed and maintained legacy codebases in NestJS, Express, and React, ensuring stability and continuous support for ongoing operations.

Successfully released and maintained AMPS' native iOS application, overseeing updates and ensuring high performance and high user satisfaction.

Developed comprehensive test suites using Playwright, resulting in a 35% reduction in bugs and ensuring high-quality software delivery within tight deadlines.

Keller Williams
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Senior Fullstack Engineer • Contractor

San Jose, Costa Rica, Costa Rica

Summary

Contributed as a Senior Fullstack Engineer to large-scale migrations and system optimizations for Keller Williams, enhancing architectural modularity, data consistency, and application responsiveness.

Highlights

Contributed to large-scale migrations, successfully transitioning monolithic architecture to more modular and efficient structures.

Designed and implemented data mapping strategies to streamline API transitions, ensuring seamless integration and robust data consistency.

Optimized state management by improving Redux performance, leading to more efficient data handling and enhanced application responsiveness.

Assisted in developing and maintaining CI/CD pipelines, ensuring smooth deployment and continuous integration processes.

Contributed to the development and expansion of an in-house component library and design system, ensuring consistency, scalability, and reusable UI components across applications.

GFT Group
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Senior FrontEnd Engineer

San Jose, Costa Rica, Costa Rica

Summary

As Senior Frontend Engineer at GFT Group, optimized client application performance, designed robust permission systems, and mentored junior talent, contributing to high-quality software delivery.

Highlights

Implemented performance optimizations, reducing client app bundle size by 50% and significantly improving load times and user experience.

Managed and coordinated two teams, comprising 4 developers and 2 testers, ensuring on-time delivery of high-quality projects.

Reengineered the core landing page with Angular and Web Components, achieving a 30% reduction in load times and significant performance improvements.

Designed a robust hierarchy-based permission system and mentored new talent, ensuring successful integration and adherence to best practices.

Implemented rigorous unit testing with Mocha and Chai, identifying and resolving critical bugs pre-deployment, contributing to 99.9% uptime for the client's web application.

Utilized advanced Angular state management with Redux to develop scalable and maintainable application architecture, improving overall system performance.

Freelance
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Senior Software Engineer

Various Locations, Costa Rica, Costa Rica

Summary

Operated as a highly adaptable freelance Senior Software Engineer, delivering efficient web and mobile solutions across diverse industries including telecom, automotive, and food delivery, consistently exceeding client expectations.

Highlights

Leveraged expertise in Angular, React, Node.js, Express, and hybrid app development (Cordova & Ionic) to deliver impactful projects across varied industries.

Architected and built dynamic single-page applications (SPAs) using Angular and React, significantly boosting user engagement and conversion rates for clients.

Developed robust Node.js APIs with Express, optimizing data flow and enhancing system performance for telecom and food delivery platforms.

Mastered hybrid mobile app development with Cordova and Ionic, crafting seamless cross-platform experiences for a vehicle parts distributor.

Demonstrated strong adaptability, seamlessly transitioning between frontend and backend roles to meet diverse project needs.

Growth Acceleration Partners
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Senior Frontend Engineer

San Jose, Costa Rica, Costa Rica

Summary

Optimized frontend development workflows, streamlined build processes, and collaborated on responsive mapping applications as a Senior Frontend Engineer at Growth Acceleration Partners.

Highlights

Gained expertise in Stylus, Sass, and Less, optimizing frontend development workflow for consistency and efficiency.

Set up and enhanced build configurations using Gulp and Grunt, streamlining development and deployment processes.

Collaborated on developing a highly responsive map view for drilling locations across the USA using Ember, Backbone.js, and Bing Maps, providing real-time access to critical metadata.

BOSZ Digital
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UI/UX/Front End Engineer

San Jose, Costa Rica, Costa Rica

Summary

Developed an asset management system, integrated payment solutions, and implemented multimedia capabilities for a global marketing company, enhancing workflow efficiency and digital asset utilization.

Highlights

Developed an asset management system for a global marketing company, streamlining organization, tracking, and utilization of digital assets.

Enabled generation of ready-to-use templates and artwork files for online and print, significantly improving workflow efficiency.

Integrated third-party payment systems, including Stripe, to facilitate secure and seamless transactions within the application.

Implemented third-party libraries to manage video assets and enable live presentations, enhancing platform's multimedia capabilities.

SBR Marketing
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UI/UX/Front End Engineer

San Jose, Costa Rica, Costa Rica

Summary

Redesigned core applications, optimized frontend code for SEO, provided technical support, and developed interactive elements to boost user engagement and brand presence for SBR Marketing.

Highlights

Redesigned core applications, improving usability and optimizing frontend code to significantly enhance SEO performance and search rankings.

Provided technical support and updates for user forums, ensuring a seamless and engaging community experience.

Developed and implemented interactive, animated elements, boosting user engagement across the platform.

Created high-quality assets and visual content for marketing materials, aligning with branding and promotional strategies.

EX2 Outcoding
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Front End Engineer and ActionScript 3

San Jose, Costa Rica, Costa Rica

Summary

Developed interactive floorplans, redesigned the system to be data-driven, and established an automated build system, enhancing user experience and operational efficiency.

Highlights

Developed interactive floorplans, enabling users to view and interact with multiple levels and materials, significantly enhancing user experience.

Redesigned the floorplan system to be data-driven, enabling dynamic loading of assets and improving scalability.

Established an automated build system, streamlining delivery of interactive floorplans and increasing efficiency.

Collaborated with cross-functional teams to ensure high-quality deliverables and seamless integration of new features.

Casino Development Network – CDN
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UI/UX/Front End Engineer and ActionScript 3

San Jose, Costa Rica, Costa Rica

Summary

Designed and implemented new game interfaces and interactive features for Flash-based casino games, enhancing user engagement and optimizing the game design process.

Highlights

Designed and implemented new game interfaces and interactive features for Flash-based casino games, improving user engagement and gameplay experience.

Collaborated on developing registration software and enhancing roulette and blackjack games.

Contributed to strategic solutions for identifying card patterns, reducing need for costly card-reading machines and custom card decks.

Optimized the overall game design process, ensuring efficient and seamless integration of new features.

Education

CENFOTEC
San José, Costa Rica, Costa Rica

Degree

Software Engineer

ULACIT
San José, Costa Rica, Costa Rica

Degree

Software Engineer

Universidad Americana (CR)
San José, Costa Rica, Costa Rica

Degree

Marketing

Languages

Spanish
English

Skills

Web Development

Angular, BackboneJS, CSS, EmberJS, HTML, JavaScript, MonoRepo, NextJS, NPM, React, Redux, Redux-Saga, RxJS, Stylus, Svelte, Tailwind, TypeScript, Vue.

Backend

Elixir, Express, GraphQL, Loopback, Nest, Node.js, Phoenix Framework, Redwood, Sails, Typescript/Node.js, WebRTC.

Infrastructure

AWS, AWS CDK, AWS Lambda, DynamoDB, EventBridge, AWS RDS, CloudFormation, ElasticBeanstalk, Azure, Docker, GCP, Microservices, Netlify, Serverless, Terraform, Vercel.

Databases

DynamoDB, MongoDB, MySQL, PostgreSQL, RDS.

Third-Party Integrations

Amazon Chime, Auth0, Bing Map, Editor.js, Gmail, Grape.js, Inngest, OpenAI, Stripe, Supabase, Twilio, WebRTC.

Mobile

Android, Cordova, Ionic, React Native, Swift.

Other Skills

ActionScript, ActionScript 3, Coding philosophy, Full-stack development, Git, GitHub, Grunt/Gulp, Software architecture, Team-building.

Projects

Legaroo

Summary

Developed an Elixir/Absinthe application for online legal assistance, modernizing the platform with webRTC for meetings and payments, and improving database and onboarding processes.

HeyDayNow

Summary

Built a gamification engine for call center staff using AWS Lambdas and microservices, increasing employee engagement through role-specific games and deploying with AWS CDK.

WineDirect POS

Summary

Built a market-ready POS system with 3rd party device integrations (card readers), connecting to BigCommerce POS & inventory for seamless sales & management, designed for immediate market deployment.