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Fullstack Developer Portfolio

Providing The best project experience

Software Developer with 3+ years of experience building web and distributed applications. Experienced building startups in blockchain ecosystems, with recognized industry contributions.

Check out my Projects
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This portfolio was made with Next.js 13

My Knowledge
And Learning...
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Educational History

Fidélitas UniversityJune 2020 - December 2023

Engineer Systems Degree

I obtained my Systems Engineering degree from Fidélitas University, where I acquired specialized skills in the design, development and maintenance of computer systems. Participating in hands-on projects that gave me hands-on experience and application of knowledge in real-world settings

University
Centro Cultural Costarricense NorteamericanoJanuary 2024 - June 2025

B2 Intensive English

Currently improving my English language skills to enhance my communication abilities in a professional setting.

Academy

Work Experience

Trustless WorkJuly 2024 - Present

Co-Founder & Tech Lead | Frontend Developer | Developer Experience Engineer

• Lead strategic growth, engaging investors and clients, driving partnerships, and shaping the go-to-market strategy to scale adoption.
• Define product vision, aligning business goals with technical execution across frontend, backend, and smart contract layers.
• Build responsive and high-performance interfaces, ensuring smooth UX, accessibility, and scalability.
• Develop SDKs to abstract integration complexity, enabling faster and cleaner adoption for developers.

Tools
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GrantFoxMarch 2025 - Present

Founder | Full-Stack Developer

• Launched and led GrantFox, an OSS hub for contributions and UX testing bounties before market release.
• Defined product vision, built the core team, and drove early growth and partnerships.
• Built and maintained core features across the stack, iterating rapidly based on user and contributor feedback.

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Only DustJune 2024 - October 2025

Maintainer & Open Source Contributor

• Managed contributions and reviewed code through structured workflows to ensure quality and consistency across projects.
• Implemented new features and resolved issues in Next.js applications, including Web3 integrations.
• Applied code standards and review processes to improve maintainability and collaboration.

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Agora PartnershipsSeptember 2024 - December 2024

Frontend Semi Senior

• Developed React-based web applications with a focus on performance and scalability.
• Designed responsive and user-centric interfaces using Figma.
• Collaborated effectively within teams, ensuring clear communication and timely delivery.

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ROLOSAOctober 2022 - July 2024

Full-Stack Developer

• Developed new features based on client requirements.
• Integrated APIs and external services to enhance platform functionality.

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Honors & Awards

Trustless Work
Trustless Work

• Co-Founder and Tech Lead, securing $220K in milestone-based funding at a $2M valuation after validating product vision, go-to-market strategy, and ecosystem impact.
• Reached final stage at 500 LatAm Silicon Valley and Berkeley SkyDeck, ranking among the top ~1%–3% of startups in highly competitive global selection processes.
• Participated in Draper x Stellar incubation and Astro Hacker House (Silicon Valley), collaborating with founders, investors, and engineers.
• Led a multidisciplinary team of 18+ professionals for Corporación Interactuar, delivering outcomes aligned with organizational goals.

GrantFox
GrantFox

• Founder and Tech Lead, securing $90K in milestone-based funding after validating product vision, go-to-market strategy, and ecosystem impact.
• Led platform architecture and development using Next.js, NestJS, Supabase, Prisma, and PostgreSQL, building systems connecting open-source contributors with projects and maintainers in the Stellar ecosystem.
• Represented GrantFox internationally (Mexico, Colombia, Brazil), engaging with ecosystem stakeholders, developers, and mentors to refine product and strategy.
• Led a cross-functional team to launch a beta product, reaching 600+ users and onboarding 150+ GitHub organizations, validating early product-market fit.

Awards & Recognition

• Mentor at Hackathon Alebrije (Mexico), supporting teams in product, technical direction, and go-to-market strategy.
• 1st place winner at a major hackathon in Mexico for innovation and execution.
• Top winner at Meridian Hackathon 2025 (Brazil), competing against international Web3 teams.

My Projects

GrantFox - Contribute Platform

GrantFox - Contribute Platform

Open-source collaboration hub on the Stellar ecosystem for contributors and UX testing bounties.

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GrantFox - Maintainer Platform

GrantFox - Maintainer Platform

Open-source collaboration hub on the Stellar ecosystem, focused on the maintainer side of project management and contributions.

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Escrow BackOffice

Escrow BackOffice

Visual interface for interacting with Trustless Work Escrows. Serves as a back-office for the complete escrow lifecycle.

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Escrow Laboratory

Escrow Laboratory

A minimal dApp example to demonstrate how to interact with the Trustless Work API.

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React SDK Hooks

React SDK Hooks

A library providing React hooks and utilities to interact with the Trustless Work API.

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React SDK UI Blocks

React SDK UI Blocks

Production-ready React UI Blocks for integrating Trustless Work's escrow functionality.

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IA Integration

IA Integration

Integration layer enabling AI coding assistants like Claude Code or any Agent to work with Trustless Work.

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About

+506 6216-6960

mjvarrod2003@gmail.com

Blessings!

© Joel Vargas Portfolio | All Rights Reserved