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Available for projects and companies

Remote / hybrid · Full-time · Contract · Freelance

UTC-3 (ART) · US/EU overlap

7 years of experience

Francisco Toyos

Senior Full Stack Engineer

React, Node.js & TypeScript · Building scalable, user-centered web applications

Rosario, Santa Fe, Argentina

7+ years leading frontend and full stack across banking, pharma SaaS, and e-commerce.

7+

Years exp.

5

Devs led

2

ERP markets

4

Industries

View experienceView featured case studyGet in touchDownload CV
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01 — About

About me

Senior Full Stack Engineer specialized in scalable, user-centered web applications.

With over 7 years of experience, I specialize in building scalable and user-centered web applications. Experienced in leading frontend initiatives, collaborating with multidisciplinary teams, and delivering solutions for banking, ERP, pharma, and e-commerce industries.

Strong focus on product quality, scalability, and business-oriented development within Agile environments. I've led frontend teams, worked with microfrontends and BFF in banking, and delivered SaaS, ERP, and e-commerce platforms.

Education

Technical Degree in Software Development

Complejo Belgrano

2020 — 2023

Programming, software engineering, databases, algorithms, data structures, and software lifecycle management.

Full Stack Node.js

Digital House

2020

Final project Pick and Play: musical instruments e-commerce with React, Node.js, Express, MySQL, and Sequelize in a Scrum team.

React.js Course

Udemy

2019 — 2020

Component architecture, hooks, state management, routing, and API integration.

Node.js Course

Udemy

2019 — 2020

Backend with Express, REST APIs, middleware, routing, and database integration.

Certifications

React-Redux

SoloLearn · May 2021

02 — Work

Experience

7+ years across banking, pharma SaaS, ERP, e-commerce, and freelance development.

  1. CurrentFull-time

    Senior Frontend Engineer

    Santander Consumer Argentina

    Buenos Aires Province, Argentina

    01

    Development and implementation of internal platforms and digital solutions for insurance, assistance services, dashboards, and business-critical banking systems.

    • Frontend architecture and scalable component design
    • Integration with internal APIs and backend services
    • Performance optimization and application maintenance
    • Collaboration with product, UX/UI, QA, and backend in agile environments

    Impact

    • Internal platforms in production for insurance and banking services
    • React, Next.js, and TypeScript stack with AWS deployments
    • Integration with internal APIs and critical backend services
    ReactNext.jsTypeScriptNode.jsViteAWSCI/CD
  2. Freelance

    Full Stack Developer

    Freelance

    Argentina

    02

    Custom web solutions: eCommerce, corporate websites, appointment scheduling, and tailor-made applications. Full-stack development, preventive/corrective maintenance, and ongoing support.

    Node.jsJavaScriptReactSQL/NoSQL
  3. Full-time

    Senior Frontend Developer

    Extendeal

    Buenos Aires Area

    03

    Smart shopping SaaS platform connecting pharmacies with distributors. Led a frontend team of 5 engineers optimizing purchasing workflows, supplier integrations, and analytics.

    • Frontend team leadership and technical mentoring
    • Scalable application and business workflow development
    • Backend services and third-party API integration
    • CI/CD participation and continuous improvement

    Impact

    • Led a frontend team of 5 engineers for 3+ years
    • Production pharma SaaS with distributor integrations
    • Jenkins CI/CD pipeline with automated AWS deployments
    ReactNext.jsTypeScriptRSuiteAWSJenkins
  4. Contract

    Senior Software Engineer

    ConsorcioAbierto

    Argentina

    04

    Maintained and evolved an ERP platform for condominium and property management (ConsorcioAbierto and Properix Colombia). Full stack development, API integration, and process optimization.

    • Backend and frontend feature development
    • Multi-market implementations (Argentina and Colombia)
    • Performance optimization and code reviews
    • Collaboration with product, QA, and agile teams

    Impact

    • 2 markets (AR + CO) on production ERP platform
    • 16 months of full stack evolution (Laravel, Symfony, Vue 3)
    • Performance optimization in reconciliation and funds modules
    LaravelSymfonyVue 3PHPJavaScriptREST APIs
  5. Contract

    Senior Frontend Developer

    Santander

    Argentina

    05

    Built a Mortgage MEP Dollar purchase platform using microfrontend architecture with React. Designed and implemented a BFF layer with Node.js orchestrating Oracle-based backend services.

    • Scalable and modular microfrontend architecture
    • Backend for Frontend (BFF) with Node.js
    • Integration with Oracle services and databases

    Impact

    • 4-month delivery with microfrontend + BFF architecture
    • 1 Node.js BFF layer integrating Oracle services
    • TypeScript frontend with decoupled microfrontends
    ReactMicrofrontendsNode.jsBFFTypeScript
  6. Full-time

    Full Stack Developer

    NeuralSoft

    Greater Rosario

    06

    Continuous improvement and maintenance of enterprise ERP MyLogic. Business module development with Java 17 and JavaScript, Bamboo CI/CD deployments, and cross-functional team collaboration.

    • New ERP feature development
    • Corrective maintenance and workflow improvements
    • FastPRG training and enterprise methodologies

    Impact

    • 9 months on enterprise ERP MyLogic (Java 17 + JavaScript)
    • Automated deployments with Bamboo CI/CD
    Java 17JavaScriptBamboo CI/CDERPGit
  7. Full-time

    Full Stack Developer

    Kretz

    Greater Rosario

    07

    Full stack development at a leading company in scales, fiscal printers, software, and electronic labels for commercial and industrial sectors.

    JavaScriptNode.jsSQLREST APIs
  8. Full-time

    Full Stack Developer

    WAIA

    Rosario, Argentina

    08

    Self-managed websites, eCommerce, loyalty points platforms, cryptocurrency trading interfaces, and payment gateway/API integrations.

    • CMS-like websites and custom platforms
    • Payment gateway integration
    • Direct client interaction for requirements analysis
    JavaScriptNode.jsPHPREST APIsSQL
  9. Full-time

    Full Stack Developer

    Desarrolla Web

    Greater Rosario

    09

    Responsive landing pages and corporate websites with WCAG accessibility standards. Payment gateway integration and cross-browser optimization.

    HTMLCSSJavaScriptWCAGAccessibility
  10. Freelance

    Full Stack Engineer

    Self-employed

    Argentina

    10

    Early freelance projects via Workana and Freelancer. Full lifecycle: requirements, proposal, development, deployment, and post-delivery support.

    HTMLCSSJavaScriptREST APIsGit
03 — Skills

Skills

Production stack — what I use to lead teams and ship product.

Frontend

ReactTypeScriptNext.jsReduxZustandContext APIMicrofrontendsStorybookVue 3

Backend

Node.jsNestJSREST APIs & BFFMicroservicesPHP (Laravel / Symfony)JavaMongoDB & SQL

DevOps & Cloud

AWSCI/CDJenkins & BambooGit & GitHub

AI & Automation

CursorClaude & ChatGPTPrompt EngineeringAgent Skills & MCPn8n

Usability & UX

FigmaUX / UIAccessibility (WCAG)

Soft Skills

Technical leadershipProblem solvingEffective communicationTeam collaborationMentoringAgile methodologiesTechnical decision-makingOwnershipContinuous improvement
04 — Languages

Languages

Communication in local and international teams.

Spanish

Native

English

Professional (B2)

05 — Featured work

Featured work

Production case studies and open source projects with role, stack, and outcomes.

Case studies · Production

Featured

Pharma smart shopping SaaS

2023 — 2026

Senior Frontend Developer · Team Lead

B2B platform connecting pharmacies with distributors. Purchasing workflows, supplier integrations, order management, and analytics in production.

Outcome: Led a frontend team of 5 engineers on a production SaaS product

Read case studyDemo
ReactNext.jsTypeScriptAWSJenkinsCI/CD

Mortgage MEP platform · Microfrontends + BFF

Oct 2024 — Jan 2025

Senior Frontend Developer

Mortgage MEP Dollar purchase platform with React microfrontend architecture and a Node.js BFF layer over Oracle services.

Outcome: Modular microfrontend architecture with BFF for banking service orchestration

Read case study
ReactMicrofrontendsNode.jsBFFTypeScriptOracle

Multi-country ERP for property management

2024 — 2025

Senior Software Engineer

ERP platform evolution for ConsorcioAbierto (Argentina) and Properix (Colombia). Full stack, APIs, and admin/financial integrations.

Outcome: Multi-market features with Laravel, Symfony, and Vue 3 in production

Read case studyDemo
LaravelSymfonyVue 3PHPREST APIsERP

Open source

Open source

NetView

Full Stack Developer

Netflix-like streaming platform with separate frontend and backend. REST architecture and API consumption from React.

Outcome: Decoupled frontend and backend with independent deployment

GitHub
ReactNode.jsREST APIs
Open source

Pick and Play

Mar — Aug 2020

Full Stack Developer · Scrum Team

Musical instruments e-commerce. Cart, checkout, and transactions with a full stack Scrum team.

Outcome: Digital House capstone — full e-commerce in an agile environment

GitHub
ReactNode.jsExpressMySQLSequelize
06 — Technical notes

Technical notes

Architecture and leadership learnings from production — banking, SaaS, and ERP.

6 min

Microfrontends + BFF in regulated banking

How to decouple frontend teams without fragmenting the user experience in an MEP project with legacy Oracle services.

MicrofrontendsBFFNode.js
Read note
7 min

Leading a frontend team of 5 in SaaS

Technical leadership patterns, CI/CD, and standardization I used over 3+ years on a production pharmaceutical product.

LeadershipReactCI/CD
Read note
5 min

Multi-country ERP without duplicating codebase

Strategies to serve Argentina and Colombia from one platform with different business rules and a legacy codebase.

ERPLaravelVue 3
Read note
07 — Testimonials

Recommendations

What colleagues I've worked with have to say.

“Francisco is an excellent professional and a great teammate. He always shows commitment to objectives, contributing ideas and improvements. He has a strong focus on quality, promoting best practices and building sustainable, scalable solutions. Beyond his technical skills, I highlight his positive attitude, willingness to collaborate, and strong sense of ownership.”

Victor Apanavicius

Functional Analyst · Santander

“His frontend development skills, attention to detail, and focus on user experience make him stand out. A great professional!”

Emmanuel Sánchez

QA Engineer · Extendeal

08 — Contact

Let's work together

I'm open to new opportunities, collaborations, and interesting projects.

toyosFrancisco17@gmail.com+54 9 341 698 3785WhatsAppDownload CVSchedule a calllinkedin.com/in/franciscotoyos

Typical response within 24 hours