Abraham Duarte

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Abraham Duarte

@abrahamduarte1

Fullstack developer at Kathenix and Grupo Gramenca, building a fintech platform and production billing systems with complete traceability.

At Kathenix, I develop Angular frontends for a B2B2C credit and marketplace platform, including buyer and funder portals. I work on onboarding, credit levels, referrals, QR payments, and installment checkout.

At Grupo Gramenca, I work on the backend for a billing and collections platform, building invoice ingestion and billing systems with duplicate prevention and full traceability. I also led the migration of a legacy PHP system to a multi-organization API, now in production, and have delivered a WhatsApp sales agent that qualifies leads and routes them to advisors.

Experience

Work history, roles, and key accomplishments

KA

Current

Desarrollador Fullstack

Current

Kathenix

Aug 2026 - Present (2 months)

Developed Angular frontends for a B2B2C credit and marketplace platform with contract-first microservices. Coordinated parallel AI agents across repositories.

Angular Signals SSR NestJS PostgreSQL RLS CI CD AI Agents

GG

Current

Desarrollador Backend

Current

Grupo Gramenca

Oct 2025 - Present (1 year)

Built backend for a collections and billing platform for a public services operator. Led migration from legacy PHP to a multi-organization API.

NestJS TypeORM MariaDB BullMQ PostgreSQL Prisma EC2 Docker Dokploy CI CD

HI

Desarrollador Fullstack, luego Líder de Proyecto

Hi4ai

Apr 2023 - Aug 2026 (3 years 4 months)

Developed scraping framework with Playwright and product matching app. Led project from November 2023.

Playwright Next.js S3 Docker Huly Project Leadership

CA

Desarrollador Backend

Confiao App

Oct 2025 - Feb 2026 (4 months)

Developed REST APIs in Node.js for a credit and payments platform. Created a shared library for validations, errors, and logging.

NodeJS REST API Development Logging

PC

Analista de Sistemas (funciones Fullstack)

Pegaso Consulting

Aug 2022 - Apr 2023 (8 months)

Developed call center platform with PHP/Laravel, Python/Django services, Angular interfaces, and video call platform with webhooks.

PHP Laravel Python Django Angular Webhooks

EP

Analista de Generación de Demanda

Epidata

Nov 2021 - Jun 2022 (7 months)

Worked as demand generation analyst.

Education

Degrees, certifications, and relevant coursework

IO

Instituto Universitario Jesús Obrero

TSU, Computer Science

2019 - 2022

Completed a TSU in Computer Science from Instituto Universitario Jesús Obrero in Venezuela from 2019 to 2022.

Tech stack

Software and tools used professionally

Availability

Looking for a job

Location

Colombia

Authorized to work in

Website

portafolio-abraham-jdr.vercel.app

Portfolio

portafolio-abraham-jdr.vercel.app

Salary expectations

39k+ USD

Social media

Job categories

Full Stack Developer Backend Engineer

Skills

Backend Development REST APIs NodeJS NestJS TypeScript Microservices Multi tenant architecture Billing Systems Collection Systems Duplicate Prevention Angular Next.js PostgreSQL MariaDB TypeORM

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