Fullstack Developer

• +505 8679 3204
• jesus.hernandez@jesushg.com
• linkedIn/jesushg-dev
• Schedule a call
• https://www.jesushg.com

• Spanish

  Native or bilingual proficiency

• English

  Professional working proficiency

• Dutch

  Basic proficiency

Frontend

• HTML

• CSS

• JavaScript

• TypeScript

• Next.js

• React

• React Native

• API REST

• Socket

• Taiwind

Backend

• C#

• .NET Core

• Nest.js

• Python

• Node-JS

• PHP

• GraphQL

Databases

• SQL Server

• MySQL

• MongoDB

• SQLite

• Firebase

• PostgreSQL

Tools

• Git

• Azure

• Docker

• GCP

• AWS

About Me

6+ years designing and scaling enterprise software across high-compliance environments (Walmart, Claro, Imagemaker). Proven track record modernizing monolithic systems into resilient microservices, automating CI/CD release pipelines, and driving technical governance.

Senior Software Engineer

Imagemaker · August 2025 – Present

• Migrated 177 GraphQL operations and stabilized merchandising rules across 6 VTEX storefronts in Central America, eliminating catalog race conditions and guaranteeing 99.9% conversion accuracy.
• Reduced MTTR by 40% by owning critical production incidents end-to-end (across mobile apps and microservices backends), establishing root-cause diagnostic patterns reused team-wide.
• Architected the technical foundation for critical order and billing flows, defining decoupled design patterns that accelerated feature delivery time by 25%.
• Co-designed a continuous validation pipeline with QA, integrating AI-assisted tooling to accelerate bug resolution cycles without compromising test coverage.

Senior Software Engineer · Freelance

Claro Nicaragua · September 2024 – August 2025

• Architected and delivered an enterprise telecom service orchestration portal using Next.js, tRPC, Prisma, and SQL Server, fully deprecating legacy paper and email request workflows.
• Automated state transitions and real-time auditing notifications, increasing request traceability by 80% and saving 120+ operational hours monthly.

Senior Software Engineer & Tech Lead

Contollo · August 2023 – March 2025

• Led frontend & full-stack architecture for 5+ concurrent enterprise initiatives, creating a unified component design system and coding standards adopted org-wide.
• Implemented Azure DevOps CI/CD pipelines with integrated static security scanning (SAST), cutting deployment cycle times by 65% and eliminating manual release failures.
• Engineered real-time financial reporting microservices integrating .NET Core, SQL Server, and QuickBooks API, optimizing complex queries and maintaining zero-data-loss accounting integrity.
• Mentored 4 engineers through structured code reviews, pair programming, and technical growth plans, promoting Clean Code and SOLID principles.

Full Stack Developer

Musa · June 2022 – July 2023

• Led the full frontend modernization: migrated a jQuery codebase to React+TypeScript, improving performance by 35% and dramatically reducing accumulated technical debt.
• Refactored the existing monolith to CQRS and Event-Driven patterns, improving system scalability and reducing coupling between critical modules.
• Designed and shipped GraphQL/Nest.js APIs that increased synchronization reliability by 90%, resolving data inconsistencies that were impacting real-time operations.

Mobile Application Developer

Telo Group · February 2022 – May 2022

• Delivered React Native apps with offline-first architecture and biometric authentication for field operations, ensuring continuity in low-connectivity environments.
• Implemented Jest unit tests and a CI pipeline from scratch, reducing production bugs by 70% within the first sprint cycle.

Frontend Developer and IT Technician

Asociación de Iglesias Reformadas · November 2019 – December 2021

• Developed and maintained institutional website with React/Next.js, modernizing CSS with BEM/SASS.
• Provided comprehensive technical support and taught computer science to elementary students, fostering interest in technology.

• Analytical skills.
• Individual and team work.
• Ability to adapt.

• Immediate availability.