Emile Vos, Developer in Hoofddorp, Netherlands
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Emile Vos

Verified Expert  in Engineering

React Developer

Location
Hoofddorp, Netherlands
Toptal Member Since
March 25, 2022

Emile is a skilled developer with experience in networking, payments, crypto, and blockchain. He has a track record of delivering innovative solutions to complex problems and experience building and optimizing systems, implementing compliance measures, and managing projects. Emile believes in using modern technologies to create innovative solutions.

Portfolio

Foxiko
Entrepreneurship, REST APIs, Infrastructure, Node.js, Front-end, TypeScript...
Brouwer Vos Payments
React, JavaScript, Cybersecurity, Agile Software Development, Node.js...
Openbare Bibliotheek Amsterdam
TypeScript, NoSQL, React, Node.js, Agile, Scrum, Scrum Master

Experience

Availability

Full-time

Preferred Environment

TypeScript, React, React Native, Next.js, Node.js

The most amazing...

...payment platform I've developed allows people to purchase items from a menu and complies with all payment standards.

Work Experience

CEO

2018 - PRESENT
Foxiko
  • Built a cloud management system that can automatically scale apps to handle thousands or millions of requests per second, resulting in a highly efficient and reliable system.
  • Developed a data center management system to check server health, temperature, humidity, and airflow, resulting in a safe and reliable data center environment.
  • Created a system that classifies text on invoices to their corresponding labels, such as invoice number, amount, tax, and date, resulting in improved data accuracy and efficiency.
  • Developed a powerful and user-friendly API that allows companies to file taxes directly from their systems to the Dutch tax authorities, streamlining the process and reducing errors.
  • Implemented a robust verification system that ensures only authorized individuals, such as legal representatives of the company, have access to the filing system, providing added security.
  • Created a tool for developers to host serverless containers that are scaled automatically based on demand and usage, using AI to determine the required instances, resulting in a highly efficient and cost-effective solution.
Technologies: Entrepreneurship, REST APIs, Infrastructure, Node.js, Front-end, TypeScript, APIs, HTML5, SQL, Stripe, Architecture, Technical Leadership, Cloud Architecture, CTO, Machine Learning

CTO and Lead Engineer

2020 - 2022
Brouwer Vos Payments
  • Developed and implemented a transaction monitoring system to classify payments such as fraud, money laundering, or financing of terrorism, providing added security and compliance for businesses.
  • Led the engineering team to build a highly available network of nodes capable of handling tens of thousands of transactions per second, resulting in a highly efficient and reliable payment system.
  • Implemented all the European legal standards regarding the payment industry, such as anti-money laundering (AML) and know-your-customer (KYC) regulations, ensuring compliance and protection for businesses and customers.
  • Led the implementation of technical and functional requirements of the acquiring bank, resulting in a payment gateway that can integrate with various acquiring banks such as Valitor and Klarna, providing businesses with a wide range of options.
  • Developed a cutting-edge payment gateway that enables businesses to accept online payments with any European bank account. This system is fully PCI-DSS compliant, ensuring that all sensitive financial information is protected and secure.
  • Implemented a feature that allows businesses to process offline payments in various ways, including through payment terminals and by reading the NFC chip, providing added convenience and flexibility for businesses and customers alike.
  • Built the payment gateway, a powerful tool that enables businesses to accept a wide range of payments from customers in a secure, making it a reliable and effective solution for any business looking to process payments online.
Technologies: React, JavaScript, Cybersecurity, Agile Software Development, Node.js, Front-end, TypeScript, APIs, HTML5, SQL, Stripe, Stripe Connect, Architecture, Technical Leadership, Cloud Architecture, CTO

Scrum Master and Software Engineer

2019 - 2020
Openbare Bibliotheek Amsterdam
  • Led a cross-functional development team as the scrum master, successfully delivering a product for library visitors.
  • Developed a system that allows visitors to reserve study/reading spots in advance, ensuring they are guaranteed a place even during times of high demand, such as during the COVID-19 pandemic.
  • Implemented Agile development methodologies to ensure the project was completed on time and within budget.
  • Collaborated closely with the library staff to understand the specific needs and requirements of the project, resulting in a product that effectively met the needs of library visitors.
  • Worked closely with the development team to identify and resolve any technical challenges during the project, ensuring that the final product was robust and reliable.
  • Contributed to the design and development of the user interface, ensuring that it was intuitive and easy to use for library visitors.
  • Assisted in developing a comprehensive testing and QA process, resulting in a high-quality product free of bugs and defects.
  • Developed a user-friendly system that helped reduce the crowd in the library and ensure social distancing during the pandemic.
  • Helped create a mobile version of the application, making it accessible to users on the go.
Technologies: TypeScript, NoSQL, React, Node.js, Agile, Scrum, Scrum Master

Interm Software Engineer and Software Consultant

2018 - 2019
BTC Point
  • Successfully advised multiple companies on their initial coin offerings (ICOs) on the blockchain, resulting in successful fundraising for clients.
  • Acted as team leader for implementing ATMs that allowed for the conversion of cash to bitcoin, expanding the company's service offerings.
  • Assisted in the management of the company's miners, contributing to the overall success of the company's mining operations.
  • Helped establish and maintain relationships with clients in the crypto and blockchain industry.
  • Acted as a liaison between the company and government regulatory bodies to ensure compliance with laws and regulations related to crypto and blockchain.
  • Developed and delivered training sessions for clients on the topics of crypto and blockchain, including the process of launching an ICO.
  • Assisted in developing the company's marketing strategies to promote the company's services and expertise in the crypto and blockchain industry.
  • Contributed to researching and analyzing trends, developments, and opportunities in the crypto and blockchain industry to inform the company's business strategies.
Technologies: TypeScript, Agile, Agile Software Development, Cloud Architecture, Project Management

Interm Software Engineer

2018 - 2018
Freshportal
  • Successfully developed and implemented a new system for managing auctions on flowers, providing an added value service to the company's clients.
  • Contributed to creating additional features for the existing client portal, improving the user experience and functionality.
  • Developed and implemented a connection between Raspberry PI and Zebra printers to print purchasing labels, streamlining the inventory management process.
  • Collaborated with cross-functional teams to design and develop new software solutions to improve efficiency and performance.
  • Utilized my knowledge of cloud-native technologies and software development best practices to create scalable and future-proof solutions.
  • Assisted in optimizing all company modules to ensure that clients always have access to the most modern and advanced software package in the industry.
  • Contributed to researching and analyzing industry trends to inform the company's product development strategy.
  • Utilized expertise in ERP software solutions to support growers, traders, and cash-and-carry worldwide, resulting in increased efficiency and improved business outcomes.
Technologies: Node.js, JavaScript, PHP, Laravel, MySQL, jQuery, jQuery UI, jQuery Mobile, Technical Leadership, Cloud Architecture, Project Management

API to File Tax Filings to the Dutch Tax Authorities

I developed a powerful and user-friendly API that allows companies to file their tax declarations directly from their systems to the Dutch tax authorities, eliminating the need for manual input, reducing the chance of errors, and increasing efficiency.

The API is designed to be intuitive and easy to use, making it accessible to businesses of all sizes. It streamlines the tax filing process by providing a simple, step-by-step process for submitting declarations. In addition, the API includes a robust verification system that ensures that only authorized individuals, such as legal representatives of the company, have access to the filing system.

One of the key benefits of the API is that it automates the tax filing process and eliminates the need for manual data entry, reducing the chance of errors and increasing efficiency. Additionally, the APIs verification process ensures that only authorized individuals can access the system, which helps to protect sensitive information and prevents fraud. Overall, the API I developed is a valuable tool that simplifies the process of filing taxes for companies, making it more efficient and secure.

Auto Scaling for Serverless Containers

I developed a cutting-edge tool for developers that utilizes AI to automatically scale serverless containers based on usage and demand, allowing optimal resource allocation and ensuring the application can always handle the necessary amount of requests, resulting in a highly efficient and cost-effective solution. The tool simplifies the process of managing and scaling applications, making it easy for developers to focus on building and improving the application itself.

HA API for Shipping eCommerce Packages

I developed a high-performance REST API for large eCommerce businesses and distributors. It enables them to seamlessly create and manage shipments to carriers such as Deutsche Post, DHL, DPD, PostNL, and DHL Express. The API is designed to handle a large volume of requests, with the ability to process more than 100,000 requests per second during peak times.

The API provides a comprehensive set of features that allow businesses to automate and streamline their shipping operations. It enables them to easily create shipping labels, track shipments, and manage returns, all through a single, easy-to-use interface. The API also integrates with various shipping carriers' systems, which allows businesses to access real-time shipping information, including estimated delivery dates and tracking numbers.

The API is built with scalability in mind, allowing it to handle the high volume of requests during peak times without any lag or downtime. Overall, the API I developed is a powerful tool that improves the efficiency and productivity of large eCommerce businesses and distributors by automating and streamlining their shipping operations.

Warehouse Management System

I developed a comprehensive and fully-functional warehouse management app native to the platform. The app allows seamless tracking, announcing, and sending parcels, products, and pallets. The app has a Bluetooth interface that enables seamless communication with Zebra scanners. This feature allows for real-time data collection and improves the accuracy of inventory management.

I also implemented an efficient route system that optimizes the movement of goods within the warehouse and during transportation by the driver. This system considers various parameters such as the location of products, traffic conditions, and driver availability to ensure the timely and safe delivery of the goods. Overall, the warehouse management app I developed enhances the efficiency and productivity of warehouse operations by streamlining the process of inventory management, tracking, and delivery.

MyCardz Mobile App

An app that lets users add their loyalty cards of specific stores in The Netherlands and Belgium to their Apple Wallet.

I was the lead developer for this app's back and front end. I coordinated with shareholders to create this app, handle the distribution of tasks, and handle some tasks of my own.

Tipzy Consumer App

https://www.tipzy.io
Contributed to integrating a React Native app that allows consumers to order items from the business on their menu.

Users can use this app without downloading it. This is done by using AppClips from Apple and Android Instant apps.

My role in this project is the coordination of all integrations with third parties, such as the payment service provider, CRM software, and KYC software,

Payment Gateway

I developed a cutting-edge payment gateway that enables businesses to accept online payments from customers with any European bank account or Visa/Mastercard card. The system is fully PCI-DSS compliant, which ensures that all sensitive financial information is protected and secure.

Not only that, but it also allows businesses to process offline payments in various ways, including through payment terminals and by reading the NFC chip of a customer's phone. This feature provides added convenience and flexibility for businesses and customers alike.

The system integrates with various acquiring banks, such as Stripe, Valitor, and Klarna, which allows for a wide range of payment options and a higher level of reliability. The system is designed to be highly efficient and can handle a high volume of transactions without any lag or downtime.

Overall, the payment gateway I developed is a powerful tool that enables businesses to securely and efficiently accept a wide range of payments from customers securely and efficiently. The added flexibility of offline payments, the integration of various acquiring banks, and PCI-DSS compliance make it a reliable and effective solution for any business looking to process payments online.

Languages

JavaScript, TypeScript, HTML5, SQL, CSS, HTML, Python, Embedded C++, PHP, Swift, C++

Frameworks

OAuth 2, React Native, Next.js, Laravel

Libraries/APIs

React, REST APIs, Node.js, Stripe, Stripe Connect, jQuery, jQuery UI, jQuery Mobile

Tools

IntelliJ IDEA

Paradigms

Object-oriented Programming (OOP), Agile Software Development, Agile, Scrum

Storage

Databases, MySQL, NoSQL, OVH

Industry Expertise

Project Management, Cybersecurity

Other

Front-end, Back-end, Entrepreneurship, Infrastructure, Programming, Web Technologies, APIs, Fintech, Open Banking APIs, Architecture, Technical Leadership, Cloud Architecture, Full-stack, CTO, Algorithms, Data Structures, Networks, SOAP, PCI DSS, PCI/PA-DSS, Near-field Communication (NFC), Agile Sprints, User Interaction, Research, OCR, English, Mobile Apps, Mobile App Development, Payment APIs, Online Payments, Transactions, Native Mobile Apps, Know Your Customer (KYC), Anti-money Laundering (AML), Mastercard, Visas & Sponsorships, Machine Learning, Scrum Master

Platforms

MacOS, Amazon Web Services (AWS), Google Cloud Platform (GCP), Azure, DigitalOcean, Docker

2021 - 2023

Graduate Coursework in Computer Science

Vrije Universiteit Amsterdam - Amsterdam, Netherlands

2019 - 2020

Propaedeutic Year in Software Engineering

Amsterdam University of Applied Sciences - Amsterdam, Netherlands

2018 - 2019

Professional Diploma in Computer Programming

Mediacollege Amsterdam - Amsterdam, Netherlands

AUGUST 2021 - PRESENT

IELTS C1

IELTS

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