Miguel Perello Garcia
Verified Expert in Engineering
React Developer
Zürich, Switzerland
Toptal member since April 11, 2022
Miguel is a software engineer with 15+ years of experience building scalable, client-centric platforms. He's a confident technical communicator and strategic thinker specializing in high-level system architecture and cross-functional leadership. Miguel is a strong advocate of collaborative engineering, seeking new challenges in delivering robust, production-ready software solutions.
Portfolio
Experience
- React - 9 years
- Leadership - 7 years
- Agile - 6 years
- Node.js - 6 years
- Jest - 5 years
- TypeScript - 5 years
- NestJS - 2 years
- Claude Code - 1 year
Preferred Environment
Slack, Jira, React, NestJS, Agile, Strapi, Claude Code, Confluence, Amazon Web Services (AWS), Sentry
The most amazing...
...feature I have achieved is spearheading the enterprise-wide adoption of a scalable monorepo culture by architecting multiple standardized repositories.
Work Experience
Front-end Lead & Platform Lead
Sygnum Bank AG
- Architected and scaled the technical infrastructure supporting 15+ enterprise front-end applications and their associated distributed back-end services.
- Established company-wide standards for modular UI architecture and implemented centralized observability and analytics frameworks.
- Integrated LLM capabilities into standard development workflows to improve developer efficiency and augment the engineering lifecycle.
- Directed the front-end hiring roadmap, conducting technical evaluations and interviews for Senior, Tech Lead, and Engineering Manager candidates.
- Promoted cross-team collaboration, establishing engineering practices focused on software quality and operational reliability.
Technical Lead
Biogen
- Led a team developing an event creation system (meetings and webinars) connected to multiple third parties.
- Integrated headless CMS content with NextJS in order to generate static pages for multiple markets.
- Orchestrated performance for the main app, implementation of Sentry, and overall performance optimization.
- Created a library based on React Hook Form to manage complex forms.
- Set up standard code guidelines and helped to find multiple ways to make code readable, extendable, and reusable.
Senior Software Engineer
Netstream
- Developed software over IPTV using JavaScript, React, and Svelte with special attention to performance.
- Created a multiplatform prototype (web, mobile, and IPTV) with React Native.
- Improved statistics gathering and data understanding using Kibana and Splunk.
Senior Software Engineer
PNN Pharma nation network AG
- Maintained the current platform built in PHP and improved the maintainability of the features it was offering.
- Designed and prepared a new platform based on PHP to be developed together with an external agency.
- Set a new workflow based on agile in the department.
Software Engineer
Illesap S.L
- Implemented smart forms for HR and SAP FICO guidance regarding their usage.
- Implemented a payroll system for the Balearic Islands regarding public health.
- Set up multiple tools to migrate data between legacy systems and a new SAP system.
Experience
Biogenlinc App
https://biogenlinc.de/I developed part of the website plus the administration tool and some microservices using React, Next.js, NestJS, and MongoDB. I also used CI/CD with GitHub, and all services were deployed serverless in AWS.
Education
Bachelor's Degree in Computer Engineering
Open University of Catalonia - Barcelona, Spain
Skills
Libraries/APIs
React, Node.js, Open APIs
Tools
Slack, Mongoose, GitHub, Webpack 4, Jira, Claude Code, Confluence, Sentry, Kong, Figma
Languages
JavaScript 6, GraphQL, TypeScript, Java, PHP, JavaScript, ABAP
Frameworks
NestJS, Redux, Jest, Svelte, Next.js, Express.js, React Native
Paradigms
Agile, UI Design, UX Design, Model Context Protocol (MCP)
Platforms
Contentful, Amazon Web Services (AWS)
Storage
MariaDB, Relational Databases, Datadog
Other
APIs, Leadership, People Management, Software Architecture, AI Agents, Team Leadership, Portfolio Management, Artificial Intelligence (AI), Strapi, Teams, Compliance, Security, WebSockets
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