Joel Vargas

Full Stack Web & Mobile Developer

Transforming ideas into digital experiences with modern technologies and a user-focused approach.

const skills = ["React.js", "Next.js", "Node.js", "React Native", "TypeScript"];

Featured Projects

XCLSV

Developing a full operations platform for large-scale event staffing, covering scheduling, payroll, onboarding, reporting, and mobile applications.

Next.jsReactReact Native

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02Financial reconciliation platform

Rexi

Built core features for an AI-powered financial reconciliation platform, working across frontend, backend, and asynchronous processing.

Next.jsReactTypeScript

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03Mobile application

UnoXUno

Built a mobile platform for a non-profit organization, helping families access community resources, news, and support services.

React NativeExpoNode.js

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04Web3 sustainability platform

Biotoken

Integrated blockchain technology to tokenize CO₂ reduction, contributing across web and mobile applications.

ReactReact NativeNode.js

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05Vehicle tokenization platform

Car2token

Built a vehicle tokenization platform, developing CMS features and backend services.

ReactNode.jsTypeScript

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06Financial operations platform

Le Mans Strategy Group

Led the development of internal dashboards and APIs supporting complex financial operations.

ReactNode.jsTypeScript

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07Blockchain marketplace

Forestblock

Contributed to a blockchain marketplace focused on sustainability and digital assets.

ReactNode.jsTypeScript

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08Marketing platform

Growketing

Designed and implemented frontend features for a marketing platform focused on usability and fast iteration.

ReactTypeScriptUI Development

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09Web platform

SUPERESTUDIO

Implemented frontend improvements for a large web platform, focusing on user experience and interface quality.

ReactTypeScriptUI Development

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Stack & Capabilities

A practical stack for product interfaces, backend systems, mobile applications, cloud infrastructure, and third-party integrations.

Frontend

ReactNext.jsTypeScriptTailwind CSSReact QueryFramer Motion

Backend

Node.jsFastifyFastAPIExpressREST APIsPostgreSQLMongoDBRedis

Mobile

React NativeExpoPush Notifications

Web3

Ethers.jsWallet IntegrationERC20ERC721dApps

Cloud & DevOps

DockerAWSGitHub ActionsVercelRenderRailway

Integrations

ClerkQuickBooks APIRamp APICustomer.io

Experience

Full Stack Web & Mobile Developer

JRC Studio

2022 - Present

Lead end-to-end development for XCLSV, a large-scale event operations platform spanning scheduling, onboarding, payroll, reporting, mobile workflows, and third-party integrations.
Build full-stack finance tooling for Rexi, including configurable reconciliation flows, asynchronous processing, exception handling, real-time progress updates, and production APIs.
Developed UnoXUno, a mobile and backend platform for community services, with authentication, onboarding, notifications, maps, and moderated community features.
Delivered Web3 and platform work across Biotoken, Car2token, Forestblock, and other client products, combining React interfaces, backend services, CMS workflows, and smart-contract integrations.
Integrate systems such as Clerk, QuickBooks, Ramp, and Customer.io while shaping APIs, background jobs, data flows, and production-ready product experiences.