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Mads
Heyde

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23
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0
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0
Website
github.com
Country
Not specified
Specialization
Type Script
Hourly rate
$20/hr
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About me
I’m a Senior Software Engineer with over a decade of experience building and scaling applications for international teams. My specialty is JavaScript and TypeScript—from frontend frameworks like React, Angular, and Next.js to backend systems with Node.js, NestJS, and microservices. I’ve delivered projects across Europe, the US, and the Middle East, modernizing legacy systems, improving performance, and creating secure, maintainable codebases. Whether it’s a quick bug fix, a small automation script, or a frontend tweak, I bring the same focus on quality, speed, and reliability. I’m fluent in English and thrive in multicultural, remote environments. Clients value me for my ability to communicate clearly, deliver fast, and solve problems efficiently—especially on short, well‑defined tasks. If you need a skilled developer for small but important jobs, I’m here to help and happy to accept payment in crypto.

Work experience

Stamintech Partners GmbH (Remote)
February 2024 – July 2025
Job title
Senior Full Stack Engineer
Work experience & achievements
• Modernized a high-traffic Node.js + React application using Next.js, cutting page load time by 35% and boosting user engagement. • Maintained a system processing 10 million+ records with 99.9% uptime through optimized database queries and caching strategies. • Coordinated sprint planning and deliverables across teams in Europe, Asia, and North America, improving release cadence by 20%.
JSMD GmbH (Remote)
September 2022 – September 2023
Job title
Senior Backend Engineer
Work experience & achievements
• Led the migration from a monolithic architecture to microservices with NestJS and Kafka, increasing system reliability and scaling capacity by 2×. • Defined and executed a technical roadmap in collaboration with stakeholders, accelerating feature delivery by 30%. • Implemented event-driven workflows and CI/CD pipelines, reducing deployment errors by 40%.
Zebyl (Miami, FL – Remote)
March 2021 – September 2022
Job title
Senior Full Stack Engineer
Work experience & achievements
• Delivered a SaaS MVP built on Next.js (frontend) and NestJS (backend), supporting 5 000+ daily active users at launch. • Built and integrated automated testing pipelines (Jest, Cypress), slashing post-release bug rates by 40%. • Designed modular components and APIs to enable rapid iteration and future feature expansion.
Koroo (Tehran, Iran)
January 2019 – January 2021
Job title
Senior Backend Engineer
Work experience & achievements
• Mentored a team of five junior developers, reducing onboarding time by 30% through pair programming and code review standards. • Developed and documented RESTful APIs, optimizing response times by 25% via query tuning and Redis caching. • Standardized coding conventions and implemented Swagger/OpenAPI documentation for seamless cross-team collaboration.
HMD Group (Sari, Iran)
January 2013 – December 2018
Job title
Full Stack Developer
Work experience & achievements
• Transitioned legacy jQuery applications into modern ES6+ and React codebases, improving maintainability and performance. • Created internal tools and automation scripts that cut manual workloads by 50% and reduced error rates. • Gained deep expertise in scalable architecture and backend performance optimization, laying the groundwork for enterprise-grade solutions.

Education

Not specified