ENGINEER · MUNICH, DE

Mosh
Mage

Engineer first, tech lead when needed. 15 years building systems that scale — and teams that ship.

15+
YRS EXP
8
ROLES
TOP RATED @ Upwork.com

CURRENT STACK

TypeScript
Node.js
React / Next.js
System Architecture
Web3 / Solidity
Product / Team Lead
Hire Me on Upwork →
EXP

EXPERIENCE

15 years of roles — from Toyota Belgium to Head of Dev at TAIKAI. Eight positions, every stack.

View work history →COMMS

COMMUNICATION

LinkedIn, Upwork, calendar booking, or direct email — pick what works.

Get in touch →WHO

ABOUT

From mIRC scripts to Web3 CTO. How I work, what I believe, and 72 skills.

Learn more →
João has been nothing short of exceptional. He has just delivered one of the most technically complex and business-critical upgrades to our InSight Behaviours app: full integration with MIS systems and the ability to build dynamic cohorts for deep behavioural analysis. This was a huge leap for our product — and João handled it with total mastery. From the very beginning, he showed phenomenal skill, problem-solving ability, and a calm, professional approach to every challenge. He understood the vision instantly, anticipated issues before they emerged, and implemented solutions that were both elegant and scalable. His communication was flawless, his pace was rapid, and the quality of his engineering has genuinely elevated the entire product. This upgrade isn't just a new feature — it's a defining step in the evolution of our platform, and João is the reason it has happened so smoothly and successfully. If you're looking for a developer who combines technical brilliance with reliability, creativity, and true professionalism, João is the one you want. A true 5-star developer. I would hire him again in a heartbeat.

“João has been nothing short of exceptional. He has just delivered one of the most technically complex and business-critical upgrades to our InSight Behaviours app: full…”

Insight Behaviours

Integration Specialist · Oct–Dec 2025

Everyone should know that — Mosh remains an outstanding guy to work with — super talented, hardworking and efficient and so easy to communicate with — it's refreshing that he brings so much originality and innovation to the project — truly feels like an expanded design team throughout the contract.

“Everyone should know that — Mosh remains an outstanding guy to work with — super talented, hardworking and efficient and so easy to communicate with — it's refreshing that he…”

Insight Behaviours

Dashboard Analytics · Nov–Dec 2025

Working with Mosh Mage has been an absolute pleasure and a turning point for our project. From day one, Mosh demonstrated a rare combination of deep technical expertise, calm professionalism, and genuine enthusiasm for bringing our Insight Behaviours platform to production standard. This was a complex brief — lifting a detailed Replit MVP (Node.js + TypeScript + Vite + Drizzle + Postgres) into a fully scalable, GDPR-compliant SaaS product capable of supporting 500+ simultaneous users. Mosh not only delivered on every requirement — from CI/CD automation through Railway hosting, Redis/BullMQ queue integration, and Sentry monitoring — but also introduced smart architectural refinements that have made the system faster, cleaner, and far more maintainable. Communication was seamless throughout: clear, prompt, and constructive. He understood the project vision quickly, anticipated challenges before they arose, and explained solutions with clarity and confidence. His efficiency and resourcefulness saved us significant time and cost, and his good humour made even the most technical discussions enjoyable.

“Working with Mosh Mage has been an absolute pleasure and a turning point for our project. From day one, Mosh demonstrated a rare combination of deep technical expertise, calm…”

Insight Behaviours

Product Transformation · Sep–Nov 2025

Look no further — You have found the perfect guy to work with. Unbelievably good developer and so easy to work with too.

“Look no further — You have found the perfect guy to work with. Unbelievably good developer and so easy to work with too.”

Insight Behaviours

Replit to SaaS · Sep–Nov 2025

To Whom It May Concern, I am writing to highly recommend Joao Goncalves, who has worked at LayerX as Head of Development for the past three years. During this time, he played a pivotal role in leading the development of our product, Bepro, from its inception in 2021. His technical expertise, leadership abilities, and dedication have been instrumental in the success of this project. Joao Goncalves consistently demonstrated deep knowledge of both front-end and back-end development, mastering a range of technologies that allowed our team to build robust, scalable, and user-friendly solutions. His ability to work with complex frameworks, write clean and efficient code, and solve intricate technical challenges has set him apart as an exceptional developer. In addition to his technical skills, he proved to be an outstanding team leader. He was highly effective at mentoring junior developers, collaborating with cross-functional teams, and ensuring that deadlines were met without compromising on quality. His proactive attitude, combined with strong problem-solving capabilities, made him an invaluable asset to our company. Throughout his time at LayerX, Joao Goncalves has displayed professionalism, reliability, and a deep passion for software development. His contributions to Bepro not only advanced the product but also positioned our company for future growth and success. I am confident that Joao Goncalves will bring the same level of skill, commitment, and innovation to any organization he joins. He has my highest recommendation, and I believe he will excel in any future endeavors. Should you require any further information, please feel free to contact me.

“To Whom It May Concern, I am writing to highly recommend Joao Goncalves, who has worked at LayerX as Head of Development for the past three years. During this time, he played a…”

Mario Alves · CEO @ LayerX

Head of Development