Isai Albarran

SENIOR FRONTEND ENGINEER

I build fast, scalable web products that teams love to ship.

7+ years crafting React and Next.js applications for e-commerce, SaaS, and enterprise. Based in Poland, open to remote across the EU.

  • React
  • Next.js
  • TypeScript
  • Node.js
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ABOUT

Senior Frontend Engineer focused on building scalable, high-performance web applications. I care about clean architecture, comprehensive testing, reusable component libraries, and shipping product that holds up under real load.

I’ve worked across e-commerce (BSH), SaaS data platforms (Norstella), enterprise, and startup environments — from distributed teams building micro frontends with Module Federation to full-stack features with Node.js and cloud integration on AWS and GCP.

EXPERIENCE

  1. Senior Frontend Developer

    BSH Home Appliances Group · via K2 / Adesso

    Jul 2024 — Present · Remote (EU)

    • Designed and shipped high-traffic e-commerce applications with React, Next.js, TypeScript and GraphQL, with a focus on performance, accessibility and code quality.
    • Migrated apps to Next.js with server-side rendering; optimized Lighthouse scores and reduced load times.
    • Built and maintained a TypeScript + Storybook component library used across teams to enforce design consistency.
    • Applied hexagonal architecture and modular code-splitting to keep the bundle lean as the platform scaled.
    • Strengthened reliability with Jest and React Testing Library tied into CI.

  2. Senior Frontend Developer

    Aptitude Global · Norstella data platform

    Sep 2022 — Oct 2024 · Spain

    • Built interactive dashboards and data visualisations that turned backend data into clear, actionable business views.
    • Implemented Micro Frontends with Module Federation for independent, reusable modules across teams.
    • Used React Query and Zustand for responsive data fetching and state management.
    • Authored a custom MUI-based component library, aligned with design standards and faster to adopt.

  3. Full Stack Developer

    Daugherty Business Solutions · Newsletter platform

    Dec 2021 — Sep 2022 · Poland

    • Delivered a React + Redux platform serving thousands of active users, with CI/CD on Docker.
    • Ran server migration to AWS (S3, CloudFront, Cognito, Security Groups) to harden security and distribution.
    • Added Cypress coverage and mentored juniors while collaborating with design and backend.

  4. Full Stack Developer

    Grupo Onetec · Normon (pharma)

    Oct 2020 — Dec 2021 · Madrid

    • Shipped features in a Node.js + React stack: mailing workflows, notifications and custom Express APIs.
    • Integrated MySQL via ORM and external APIs, documented with Swagger.
    • Contributed to CI/CD and regular refactors to keep the codebase production-ready.

  5. Full Stack Developer

    Demium Startups

    Mar 2019 — Sep 2020 · Madrid

    • Node.js microservices and collaboration on Go services, exposure to multi-language backend architectures.
    • Frontend features with React, ES6, HTML and CSS.
    • Google Cloud Functions for serverless workflows; Postgres + Sequelize for data; REST APIs with Postman.

  6. Software Engineer

    everis · Banco Santander (NetReveal)

    Mar 2018 — Jan 2019 · Madrid

    • Development and maintenance on Oracle SQL; incident resolution on the NetReveal system for Banco Santander.

PROJECTS

passthecert.com

Live

SaaS platform for CompTIA Security+ certification prep. Full-stack, from architecture to Stripe integration.

  • Next.js
  • Supabase
  • Stripe
  • Tailwind

BSH e-commerce migration

Enterprise

Large-scale frontend migration for BSH Home Appliances Group. Distributed team, component library, comprehensive testing.

  • React
  • Next.js
  • TypeScript
  • Storybook

Norstella data dashboards

SaaS

Micro Frontend architecture with Module Federation. Data visualisation dashboards in a distributed microservices environment.

  • React
  • Module Federation
  • Zustand
  • MUI

Daugherty newsletter platform

Cloud

React + Redux platform serving thousands of users. AWS infrastructure, CI/CD with Docker, authentication with Cognito.

  • React
  • Redux
  • AWS
  • Docker

STACK

FRONTEND

React / Next.js
TypeScript
Tailwind / SASS
Storybook / MUI

BACKEND & APIS

Node.js / Express
REST / GraphQL
PostgreSQL / MySQL
Supabase

TESTING

Jest / Vitest
React Testing Library
Playwright
Cypress

CLOUD & DEVOPS

AWS / GCP
Docker
GitHub Actions
Vercel

GET IN TOUCH

Open to remote opportunities across the EU.