Fullstack Developer · Remote, Argentina

Reliable software for real-world operations.

7+ years building logistics, IoT and e-commerce platforms end to end: web and mobile interfaces, APIs and data layers, with TypeScript, React and Node.js.

View experienceGet in touchDownload CV
Service record No. 2019-04Short version
Photo of Jonas Aguilar

Fullstack Developer

Jonas Aguilar

Service
7+ years · since 2019
Posted at
Cintelink · IoT
Fronts
Web · Mobile · APIs
Base
Remote, Argentina
Status
Available

Decorations

  • TypeScript
  • React
  • React Native
  • Next.js
  • Vue
  • Node.js
  • NestJS
  • PostgreSQL
  • MongoDB
Jonas Aguilar - Fullstack Developer specializing in React, Next.js and Node.js
Open to new challenges

01 — Profile

Fullstack developer focused on mission-critical products: where connectivity drops, hardware lives in the field, and every technical decision affects operations.

Self-taught, adaptable and driven by solving problems. My foundation is a technical education in electronics; since 2019 I've worked full-time in software development, contributing to architecture decisions, technical leadership and quality.

Experience

02 — Career
  1. Aug 2024 — PresentRemote · Full-time

    Fullstack Developer

    Cintelink

    IoT platform for fuel management and control in transportation and industry. I take part in the architecture and performance decisions behind the product.

    • Build end-to-end features —web, mobile, APIs and persistence— for a mission-critical platform.
    • Build offline-first apps integrated with field hardware, where losing connectivity can never halt operations.
    • Implement fuel authorization, dispensing and telemetry: there, a logic error means product loss or fraud.
    • TypeScript
    • React
    • React Native
    • Vue
    • Node.js
    • NestJS
    • PostgreSQL
  2. Aug 2023 — Oct 2024Remote · Full-time

    Mid-Senior Frontend Developer

    Andreani

    Frontend for corporate platforms used in Andreani's day-to-day logistics operations.

    • Migrated the maps from HERE to Leaflet, removing a paid license with no loss of functionality.
    • Contributed to implementing a micro-frontend architecture with Module Federation.
    • Integrated components with the corporate CMS so non-technical teams could publish content on their own.
    • React
    • Next.js
    • TypeScript
    • Module Federation
    • Leaflet
    • Storybook
  3. Nov 2021 — Jul 2023Remote · Full-time

    Senior Frontend Developer

    clicOH

    Products for logistics operations and e-commerce.

    • Took on technical leadership of the team: architecture decisions, code review and production incidents.
    • Built core WMS features and the event tracking and analytics that gave business visibility that didn't exist before.
    • Integrated Zebra printers for label generation, digitizing a manual process.
    • Proposed and led a library of reusable components, reducing code duplication across teams.
    • React
    • Next.js
    • TypeScript
    • Node.js
    • NestJS
    • Jest
    • MongoDB
    • Redis
  4. Apr 2019 — Aug 2021Full-time

    Fullstack Developer

    Intree SAS

    Web and mobile products, working across both frontend and backend.

    • Built POS systems and dashboards for daily operations, with Mercado Pago payments.
    • Built camera-based code scanning, removing the need for dedicated scanning hardware.
    • Led the migration from the web platform to a mobile app, reaching new users.
    • React
    • React Native
    • TypeScript
    • Node.js
    • Express
    • MongoDB
  5. May 2018 — Jul 2018Campana · Internship

    Intern

    Tenaris Siderca

    Professional internship at the Tenaris Siderca plant in Campana.

    • Gathered requirements from different departments and served as the liaison between IT and Warehouse.
    • Took part in project evaluations and in testing and validation tasks.
  6. 2012 — 2018

    Education

    Electronics Technician — E.E.S.T. N2, Zárate. Technical education in electronics — the foundation I later built on to move into software development.

Production stack

Every tool is tied to where I've used it in production and since when. No logos, no percentage bars: just evidence.

AreaToolsWhere
FrontendReact, Next.js, TypeScript, Vue, Module Federation, StorybookCintelink · Andreani · clicOH · Intree
MobileReact Native, Expo, publishing to Google Play and the App StoreCintelink · Intree
Backend & APIsNode.js, NestJS, ExpressCintelink · clicOH · Intree
DataPostgreSQL, MongoDB, Redis, FirebaseCintelink · clicOH · Intree
QualityJest, Cypress, code review, SDD-generated testsCintelink · clicOH · Intree
IntegrationsField IoT hardware, Zebra printers, Mercado Pago, LeafletCintelink · Andreani · clicOH · Intree

ExploringGraphQL · Rust

03 — Method

AI with a method, not as autocomplete.

Part of the engineering process: verifiable specs before code, and a cost that stays predictable.

Spec-Driven Development

Automation with SDD

I turn every task into a verifiable spec before touching code, instead of letting an agent iterate blindly. That is how I automated:

  1. Migrating an entire section from Vue 2 to Vue 3 without breaking functionality.
  2. Test suites for the mobile app there wasn't time to write by hand.
  3. Performance improvements, prioritized by real impact.
  4. Assessing security risks inside the workflow, not at the end.
gentle-ai

Costs under control with gentle-ai

Every agent change gets a fixed review budget, which cuts the endless correction loops that drive token spend. The result: AI-assisted development with predictable cost.

View gentle-ai on GitHub
04 — Contact

Let's talk.

Open to new opportunities, collaborations and projects. I reply promptly.