Albert – Typescript, JavaScript, Node.js, experts in Lemon.io

Albert

From Spain (UTC+2)flag

Back-end Web Developer|Senior
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Albert – Typescript, JavaScript, Node.js

Albert is a senior backend engineer with extensive experience delivering production systems in both enterprise and startup environments. At Onlyfy/New Work SE, he built Node.js, AWS, and PostgreSQL services, including an email platform processing more than 10,000 emails monthly, reduced large-report processing from 5 minutes to under 10 seconds, and cut deployment time by 50%. At Heisenware, he owns the backend, database layer, CI/CD, automated testing, releases, and operation of customer applications.

8 years of commercial experience
Main technologies
Typescript
6 years
JavaScript
10 years
Node.js
7.5 years
Additional skills
AWS
PostgreSQL
Docker
React
Cypress
Vue.js
Ruby on Rails
SQL
Angular
Ruby
Visual Basic (VB)
CI/CD
Jest
GraphQL
Direct hire
Possible
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Experience Highlights

Senior Full-stack Developer
Feb 2025 - Ongoing1 year 7 months
Project Overview

A low-code IoT platform for industrial clients that connects and orchestrates factory machinery, enabling the creation of real-time dashboards and operational applications. The platform also features a custom RAG-powered AI assistant that allows users to generate operational applications using natural language prompts.

Responsibilities:
  • Developed the low-code IoT platform used by industrial clients to orchestrate machinery and deploy real-time dashboards;
  • Integrated a custom RAG AI system enabling users to generate operational apps from natural language;
  • Built the platform as a PWA on Node.js and React, with PostgreSQL and InfluxDB for time-series data, deployed with Docker.
Project Tech stack:
Node.js
React
PostgreSQL
InfluxDB
Docker
Senior Full-stack Developer
Mar 2022 - Jan 20252 years 10 months
Project Overview

A web-based Applicant Tracking System (ATS) designed for recruiters at large enterprises to manage job postings, candidate profiles, and hiring pipelines. The platform also includes an email notification service that keeps candidates and recruiters informed throughout the recruitment process.

Responsibilities:
  • Developed and maintained an Applicant Tracking System web app and an email notification service;
  • Optimized SQL queries, reducing report filter processing time from 5 minutes to under 10 seconds for large clients;
  • Architected a scalable email system with Node.js & AWS (SQS, SNS, SES), handling 10K+ emails monthly;
  • Migrated the front-end from Vue.js to React, creating a component library that cut feature development time by 30%;
  • Mentored junior developers and improved team productivity through training sessions;
  • Improved CI/CD with GitHub Actions and Docker, reducing deployment time by 50%.
Project Tech stack:
Node.js
React
Vue.js
AWS
Docker
PHP
Cypress
PostgreSQL
Jest
Full-stack Developer
Dec 2018 - Feb 20223 years 2 months
Project Overview

A ticketing manager and an event marketplace inside a professional social network: companies create and promote events, sell tickets, and reach members through ads, while the marketplace surfaces relevant events to the network's users.

Responsibilities:
  • Developed and maintained a web platform for a ticketing manager and an event marketplace using Ruby on Rails;
  • Integrated the event marketplace with the ticketing platform, bridging Ruby and Java applications via APIs.;
  • Improved event visibility for companies by 20% by implementing Xing Ads within the Xing network.
Project Tech stack:
Ruby on Rails
PostgreSQL
GraphQL
React
Typescript
Freelance Web Developer
Jan 2018 - Nov 20189 months
Project Overview

Web applications built as a freelancer for small startups in Barcelona and Munich, from first prototype to production, on Ruby on Rails and Angular, alongside a Dialogflow chatbot workshop presented at Google I/O 2018 in Barcelona.

Responsibilities:
  • Developed web applications with Ruby on Rails and Angular for small startups;
  • Presented a workshop on Dialogflow and chatbot development at Google I/O 2018 in Barcelona.
Project Tech stack:
Ruby on Rails
Angular

Education

2010
Mechanical Engineering
Master of Engineering - MEng
2016
Full-stack web development (Ruby, JavaScript, HTML, CSS, PostgreSQL)
Coding bootcamp
2016
Master of Arts - MA
2011
Mechanical Engineering
Master Thesis

Languages

German
Advanced
Spanish
Advanced
Catalan
Advanced
English
Advanced

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