Full Stack Developer with 5+ years of experience specializing in React and Node.js, with a record of building scalable, maintainable, and reliable web applications. I've delivered end-to-end solutions—from responsive frontend interfaces to robust backend services—creating reusable components, optimizing data flows, and integrating complex APIs.\n\nExperienced in cloud environments including AWS and Google Cloud, deploying and containerizing applications with Docker, managing databases, and automating backend processes to enhance performance, scalability, and operational efficiency. I am proactive, with strong communication skills, and always eager to learn new things.

Diego Sevilla

Full Stack Developer with 5+ years of experience specializing in React and Node.js, with a record of building scalable, maintainable, and reliable web applications. I've delivered end-to-end solutions—from responsive frontend interfaces to robust backend services—creating reusable components, optimizing data flows, and integrating complex APIs.\n\nExperienced in cloud environments including AWS and Google Cloud, deploying and containerizing applications with Docker, managing databases, and automating backend processes to enhance performance, scalability, and operational efficiency. I am proactive, with strong communication skills, and always eager to learn new things.

Available to hire

Full Stack Developer with 5+ years of experience specializing in React and Node.js, with a record of building scalable, maintainable, and reliable web applications. I’ve delivered end-to-end solutions—from responsive frontend interfaces to robust backend services—creating reusable components, optimizing data flows, and integrating complex APIs.\n\nExperienced in cloud environments including AWS and Google Cloud, deploying and containerizing applications with Docker, managing databases, and automating backend processes to enhance performance, scalability, and operational efficiency. I am proactive, with strong communication skills, and always eager to learn new things.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent
Spanish; Castilian
Fluent
French
Beginner

Work Experience

Full Stack Software Developer (Frontend Focus) at Acklen Avenue
February 13, 2024 - May 31, 2025
● Implemented a relevant Redux update (5.x to 7.x) to the main Frontend app promoting the usage of more recent React code practices and updates to outdated packages throughout the application. ● Built the Frontend and Backend for +8 new management screens that contained tables and other components for monitoring and auditing purposes related to property management data. ● Created two DB back-fill processes deemed for updates to +70,000 DB records taking into consideration different directives and conditions. Data integrity was not affected. ● Added +5 new reusable components to the Frontend Component Library normally used for customizations. ● Refactored and updated +5 forms on the main frontend app enhancing data submission and user experience. ● Completed +5 Jira Epics on time regarding enhancements to already existing features and made possible to maintain the relationship with a client which represented the 5% of the company’s revenue.
Software Engineer (Frontend Focus) at Cognits
January 31, 2024 - September 19, 2025
● Initiated, structured and set the basement of the Front-End side of a remittances company web application following a micro-Frontend architecture and collaborating closely with the project's solutions architect, facilitating deployment and establishing long-term solutions for the project. With this initiative, I saved approximately +3 weeks of time to the company. This setup involved tasks like project configuration, CSS framework setup (Bootstrap with Sass) and internationalization packages setup for translations. ● Integrated the debit card payment with a POS for a transfers app by implementing the communication between the Frontend and a desktop app used as a bridge to use peripheral devices. ● Assessed UX/UI designs regarding specific components and web page views, making sure they were technically feasible. ● Added +6 new responsive pages and +5 new web components to Cognits updated website, contributing to a more modernized and user-friendly online interface. ● Managed diverse integrations not to mention Angular API implementations and comprehensive refactoring initiatives to optimize system functionality and performance.
Full-Stack Developer at Pacifiko (E-commerce)
March 31, 2022 - September 19, 2025
● Improved order tracking and products delivery by 50% through two carrier APIs integration concerning real-time updates for orders delivery throughout Guatemala City and all delivery-feasible regions of the country. This made it easier to see where orders are and make decisions quickly. ● Implemented Python scraping scripts, enabling efficient data extraction from +15 competitors for business insight purposes and maintenance of competitive product prices on the website. ● Set up a python process dedicated to PID unification, avoiding links redirecting to the same product with a different price on the website. This script would update inventory quantities between two or more products with the same PID and from the same vendor choosing the product with the lowest price for better customer engagement. This scheduled and automated script helped update +500 products with PID issues in the first run and helped save +20 minutes of time (with each unification) by automating this specific process that was done manually by vendor manager, whenever new products entered to catalog. ● Created a python script to fix product inventory quantity issues in the DB. This automated script helped update +10,000 products with quantity issues on the first run. These issues were caused by a flawed query on the admin dashboard, that was fixed as well, to prevent future occurrences. ● Assembled +10 responsive web pages on the website, plus managed PHP interactions with MySQL, facilitating data management and enhancing the overall functionality of the website. ● Administered AWS EC2 servers and AWS RDS instances ensuring a robust and secure infrastructure, contributing to the seamless functioning of the system.
Full-Stack Developer & Cloud Engineer at CyberSign, S.A.
June 15, 2020 - December 5, 2020
● Implemented a React testing website employed to test important features such as images and documents storage and the integration of AWS services packages and communication with backend. ● Deployed a static website using Amazon S3, CloudFront, Route53 and AWS Certificate Manager using a domain for QA purposes. Moreover, created Lambda functions with Java for processes automation.

Education

Bachelor's Degree in Computer Science and Information Technologies at Universidad del Valle de Guatemala (University of the Valley of Guatemala)
January 1, 2017 - December 1, 2021
Bachelor's Degree in Computer Science and Information Technologies at Universidad del Valle de Guatemala
January 1, 2017 - May 1, 2022

Qualifications

UX, UI and Innovation Award
September 20, 2025 - January 31, 2033
React Certification, Hacker Rank — Custom Hooks, Performance Optimization & Component Patterns
February 1, 2026 - March 18, 2026
Node.js Certification, Hacker Rank — Express Integration, Scalable Architecture & Back end Best Practices
January 1, 2026 - March 18, 2026
Node.js Essentials, Udemy — Back end Engineering Fundamentals, API Design & Security Principles
November 1, 2025 - March 18, 2026
UX/UI & Innovation Awards, CSS Design Awards — International Recognition for diegosevilla.dev
October 1, 2025 - March 18, 2026

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Retail, Computers & Electronics