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Leonardo López

@leonardolpez1

Senior backend engineer at Axen Technology building Axen Life’s fintech API, payment integrations, and a card-transfer system deployed to production.

Mexico

Message

At Axen Technology, I own the Axen Life fintech API, which supports wallets, yields, investments, cards, and SPEI transfers. I designed and shipped a card-transfer rework using serialized Redis queues across provider shards, and rolled it out to all production traffic.

I’ve also built payment integrations, billing and payout processes, and queued messaging for the platform. At Axen Technology, I created the first Axen Life API and co-built an internal ERP; I’ve also delivered client projects at Dragonware and am developing a custom HR system at ModeloConnect.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer (freelance)

Current

ModeloConnect

Jul 2026 - Present (3 months)

Developed a custom HR system on Laravel and PostgreSQL with schema-per-domain database, GIN trigram search, and a declarative table-query layer. Built a React frontend with TypeScript.

Laravel PHP PostgreSQL React TypeScript Docker Pest Gin CSV Export

Current

Senior Backend Engineer / Tech Lead

Current

Axen Technology

Nov 2023 - Present (2 years 11 months)

Owns the Axen Life fintech API end-to-end, including payment gateway integrations, billing engine, and database optimization. Leads a 3-developer team and advises product and mobile/web teams on architecture.

Laravel PHP PostgreSQL Redis Stripe AlquimiaPay Paymax SPEI MySQL Queueing Systems Microservices Clean Architecture DDD CQRS PHPUnit Sentry Jenkins Git Flow

Co-founder & Full-Stack Developer

Dragonware

Jun 2020 - Dec 2023 (3 years 6 months)

Delivered 20+ client projects on Laravel and MySQL, including e-commerce, e-learning, and institutional sites. Handled hosting, DNS, and Linux server setup for clients.

Laravel MySQL PayPal Stripe jQuery React Inertia Linux DNS Hosting

Full-Stack Developer

Axen Technology

Aug 2022 - Oct 2023 (1 year 2 months)

Designed and launched v1 of the Axen Life API and co-built the internal ERP/backoffice. Integrated payment, KYC, and messaging services, and moved releases to a Jenkins pipeline.

Laravel MySQL PostgreSQL Stripe AlquimiaPay Veriff Twilio Sendgrid Firebase React Inertia MUI Jenkins Pusher Zendesk

Full-Stack Developer

Diinco

Feb 2022 - Jan 2023 (11 months)

Developed a web platform for the architecture industry using React, Express.js, and Redis. Executed a database refactor and built a file module with quotas and a mini CRM.

React ExpressJS Redis Database Refactoring File Management CRM