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I'm Josafat Varahuayta, a Senior Full Stack Developer and engineering leader with 9+ years of experience delivering scalable web, mobile, and backend systems. I specialize in shaping architectures, modernizing legacy platforms, and setting engineering standards that boost code quality, performance, and team productivity. I thrive mentoring engineers, aligning technical work with product goals, and delivering high-quality software using JavaScript/TypeScript, React, React Native, GraphQL, and cloud-ready architectures. I’ve led cross-functional teams, driven migrations to modern frameworks, and contributed to robust frontend and backend solutions. I enjoy collaborating with product and business stakeholders to deliver features that drive measurable impact while maintaining a clean, scalable codebase.…I'm Josafat Varahuayta, a Senior Full Stack Developer and engineering leader with 9+ years of experience delivering scalable web, mobile, and backend systems. I specialize in shaping architectures, modernizing legacy platforms, and setting engineering standards that boost code quality, performance, and team productivity. I thrive mentoring engineers, aligning technical work with product goals, and delivering high-quality software using JavaScript/TypeScript, React, React Native, GraphQL, and cloud-ready architectures. I’ve led cross-functional teams, driven migrations to modern frameworks, and contributed to robust frontend and backend solutions. I enjoy collaborating with product and business stakeholders to deliver features that drive measurable impact while maintaining a clean, scalable codebase.

Josafat Varahuayta

Full Stack Developer, Front-End Developer, Web Developer, +5

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I'm Josafat Varahuayta, a Senior Full Stack Developer and engineering leader with 9+ years of experience delivering scalable web, mobile, and backend systems. I specialize in shaping architectures, modernizing legacy platforms, and setting engineering standards that boost code quality, performance, and team productivity. I thrive mentoring engineers, aligning technical work with product goals, and delivering high-quality software using JavaScript/TypeScript, React, React Native, GraphQL, and cloud-ready architectures. I’ve led cross-functional teams, driven migrations to modern frameworks, and contributed to robust frontend and backend solutions. I enjoy collaborating with product and business stakeholders to deliver features that drive measurable impact while maintaining a clean, scalable codebase.…I'm Josafat Varahuayta, a Senior Full Stack Developer and engineering leader with 9+ years of experience delivering scalable web, mobile, and backend systems. I specialize in shaping architectures, modernizing legacy platforms, and setting engineering standards that boost code quality, performance, and team productivity. I thrive mentoring engineers, aligning technical work with product goals, and delivering high-quality software using JavaScript/TypeScript, React, React Native, GraphQL, and cloud-ready architectures. I’ve led cross-functional teams, driven migrations to modern frameworks, and contributed to robust frontend and backend solutions. I enjoy collaborating with product and business stakeholders to deliver features that drive measurable impact while maintaining a clean, scalable codebase.

Available to hire

I’m Josafat Varahuayta, a Senior Full Stack Developer and engineering leader with 9+ years of experience delivering scalable web, mobile, and backend systems. I specialize in shaping architectures, modernizing legacy platforms, and setting engineering standards that boost code quality, performance, and team productivity. I thrive mentoring engineers, aligning technical work with product goals, and delivering high-quality software using JavaScript/TypeScript, React, React Native, GraphQL, and cloud-ready architectures.

I’ve led cross-functional teams, driven migrations to modern frameworks, and contributed to robust frontend and backend solutions. I enjoy collaborating with product and business stakeholders to deliver features that drive measurable impact while maintaining a clean, scalable codebase.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Spanish; Castilian

Advanced

English

Fluent

Work Experience

Frontend Developer at Cerza Consulting

March 1, 2016 - January 1, 2020

Gained early professional experience developing web, mobile, and backend projects (e.g., real-time tracking, video calls, e-commerce). Proposed migration from AngularJS to modern frameworks via hybrid approaches (Ionic) to accelerate delivery and reduce maintenance. Built a solid foundation in modern frontend frameworks and cross-platform development.

Senior Frontend Developer at Rimac Seguros - Experis IT

September 1, 2018 - January 1, 2019

Strengthened the Angular codebase by enforcing strict coding standards, modularization, and reusability; improved performance by removing memory leaks and unused code; built an Angular-based error-tracking solution; delivered features for desktop, web, and mobile and ensured long-term scalability through frontend architecture.

Senior Frontend Developer at Pacífico Seguros - Inetum

August 1, 2019 - April 1, 2021

Delivered and optimized complex insurance applications requiring heavy client data input; significantly improved page load times and proposed a Redux-based state-management approach for form handling. Played an active role in UI/UX improvements and form simplification; built reusable libraries for authentication and tracking and expanded experience with a Flutter-based application.

Senior Frontend Developer at RBI - Santex Remote

September 1, 2021 - August 1, 2025

Contributed to the company-wide migration from React Web to React Native, including transitions from React Router to React Navigation and later Expo Router. Led the implementation of Server-Side Rendering in React Native to boost SEO, and improved GraphQL usage by restructuring inefficient data flow to reduce redundant endpoint calls. Delivered multiple new features using feature flags and collaborated on major UI redesigns to ensure consistency and performance across web and native applications. Assisted debugging and delivering new features on NestJS project for Payments.