Open to opportunities

Carlos Rafael Nuñez Lopez

@carlosrafaelnuezlope

Message

I build secure full-stack fintech and enterprise product platforms.

United Kingdom

Message

I've built customer-facing platforms at KwikVet, VixiPay/FirstOTC, and Asistur Seguros, delivering secure web products, REST APIs, payment workflows, onboarding, and operational automation. Across 18+ years, I’ve worked hands-on from discovery and architecture through deployment and production support.

At KwikVet, I developed Vue.js and Node.js capabilities for appointments, medical records, invoicing, inventory, and administration. At VixiPay/FirstOTC, I evolved a Laravel fintech API for accounts, transactions, KYC/KYB, crypto wallets, reconciliation, refunds, and disputes, while integrating providers including Fireblocks, Sumsub, Modulr, Twilio, and Zoho CRM. I also bring technical leadership, mentoring, code review, and university teaching experience grounded in SOLID, KISS, and DRY principles.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer - Research Data Systems

Current

City St George's, University of London

Nov 2024 - Present (1 year 9 months)

Support and administer research data platforms and database-backed applications used across the university environment. Investigate application, database, infrastructure, access and integration incidents, coordinating technical communication and service recovery across teams.

REDCap SQL MySQL MariaDB Linux Research Platforms Incident Management Stakeholder Communication

Senior Full-Stack Engineer / Technical Lead

KwikVet

May 2020 - Mar 2026 (5 years 10 months)

Designed and developed customer-facing and administrative product capabilities using Vue.js, TypeScript, Node.js, NestJS, PostgreSQL, MongoDB and Firebase. Built REST APIs connecting web and mobile applications across appointments, clients, pets, medical records, invoicing, inventory and administrative workflows.

TypeScript Vue.Js Node NestJS PostgreSQL MongoDB Firebase REST APIs JWT RBAC

Professor / Technology Specialist

Technological University of Havana (CUJAE)

Jan 2007 - Dec 2024 (17 years 11 months)

Taught Software Engineering, Object-Oriented Programming, Databases, Database Design and Web Development. Mentored engineering theses and advised university software projects including payroll, HR, postgraduate research databases and event-management platforms.

Software Engineering Databases Web Development Mentor Technical Documentation

Backend Developer

VixiPay / FirstOTC

Oct 2021 - Jul 2023 (1 year 9 months)

Developed and evolved a modular Laravel 8 REST API for B2B/B2C onboarding, accounts, transactions, fees, KYC/KYB, crypto wallets, Bank Pools and a P2P marketplace. Implemented OAuth2 with Laravel Passport, RBAC, 2FA, email/SMS verification, webhooks, scheduled jobs and state-driven financial workflows.

PHP Laravel MySQL MariaDB RBAC 2FA OpenAPI Webhooks KYC KYB Payments

Project Team Lead / Senior Developer

Asistur Seguros / Codes

Apr 2021 - Apr 2023 (2 years)

Led the project team delivering insurance platforms with Vue.js, Laravel and PostgreSQL. Designed the architecture and implemented the Insurance Policy System, including web and mobile workflows and payment-gateway integration.

Vue.Js Laravel PostgreSQL REST APIs Payment Integration Technical Leadership

Azure DevOps Module Developer

Inycom

Nov 2021 - Feb 2022 (3 months)

Built full-stack modules and delivery capabilities on Azure DevOps.

Azure DevOps CI CD Web Development

Software Developer

The Cloud Group

Sep 2019 - Nov 2020 (1 year 2 months)

Delivered Vue.js, Laravel, MySQL and PostgreSQL solutions for international clients and deployed projects to shared servers and VPS environments.

Vue.Js Laravel MySQL PostgreSQL

Project Manager / Senior Developer

Rezglo

Nov 2018 - Mar 2020 (1 year 4 months)

Developed and maintained a React, Laravel and MongoDB web platform, defined architecture and testing practices, and managed a four-person delivery team.

React Laravel MongoDB Architecture Testing Team Management

Software Analyst & Architect

ClimbX, Excelencias Travel and Havana Club

Jan 2013 - Dec 2017 (4 years 11 months)

Delivered enterprise web and desktop systems, including the Excelencias Travel hotel and travel-agency management platform with Juniper integrations and Amadeus standards, Havana Club production-management software, database administration and infrastructure support.

Enterprise Systems Web Development Database Administration Infrastructure Support