Jef is available for hire

Jef Vlamings

Verified Expert in Engineering

Software Developer

Location

Hoogstraten, Belgium

Toptal Member Since

August 18, 2022

Jef is a full-stack engineer with more than 10 years of professional experience in web development. He's worked on 50+ projects and solved complex business problems in industries including real estate, media, sports, eCommerce, food, and retail. Jef has consistently saved costs while increasing profits. He's ready for an opportunity to use his skills to grow your revenue exponentially.

Code Review CSS Ruby Ruby on Rails (RoR)PHP Sublime Text Ruby on Rails 5 Bootstrap Sass Redis RSpec Elasticsearch Vue FTP CodeKit

Portfolio

Cipal Schaubroeck

Ruby, Ruby on Rails (RoR), Jenkins, Docker, Nexus, GitLab, React, Redux...

Frontier

Web Consulting, SEO Marketing, Paid Advertising, DevOps, APM, Ansible...

DPG Media

Ruby, Ruby on Rails 4, Vagrant, Vim Text Editor, RSpec, Cucumber, HTML...

Experience

HTML - 15 years Sass - 10 years Bootstrap - 10 years Ruby on Rails (RoR) - 7 years Redis - 7 years DigitalOcean - 7 years Elasticsearch - 5 years RSpec - 5 years

Availability

Part-time

Preferred Environment

MacOS, Vim Text Editor, IntelliJ, Photoshop CC, Figma, Sketch, Oh My Zsh, Slack, Chrome, Sublime Text

The most amazing...

...thing I've developed is a real-time tracking platform for a taxi company. GPS data is collected and streamed via WebSockets on an interactive map.

Work Experience

Senior Full-stack Engineer

2022 - PRESENT

Cipal Schaubroeck

Switched an existing application to a different stack. One of the tasks involved a migration from PostgreSQL to MySQL.
Changed deployment flow from Capistrano to Docker deployments using Jenkins.
Integrated local print services to print documents in batches.

Technologies: Ruby, Ruby on Rails (RoR), Jenkins, Docker, Nexus, GitLab, React, Redux, React Redux Form, Swagger, Postman

Founder & CEO

2017 - PRESENT

Frontier

Digitally transformed local SMEs and boosted their total revenue.
Set up, configured, and managed a fleet of servers tailored to the customers' projects.
Developed and open-sourced an in-house CMS that is actively used in 20+ live projects.

Technologies: Web Consulting, SEO Marketing, Paid Advertising, DevOps, APM, Ansible, Terraform, Docker, GitHub, Git, Slack, Figma, Sketch, Photoshop CC, Illustrator CC, Ruby, Ruby on Rails (RoR), REST, Ruby on Rails API, Vue, Ruby Gems, Postmark, Sidekiq, HTML, PHP, JavaScript, Technical Hiring, Code Review, Source Code Review, Task Analysis, Interviewing, CSS

Senior Ruby on Rails Engineer (Freelance)

2019 - 2019

DPG Media

Performed maintenance tasks on a tool used by all hosts on several national radio channels, e.g., QMusic, JoeFM, and Willy.
Modernized an existing Ruby on Rails codebase and increased test coverage.
Developed API endpoints to be consumed by native mobile apps.
Integrated a shared radio player widget on multiple broadcasting front ends.
Architected small interactive games to entertain a large audience.

Technologies: Ruby, Ruby on Rails 4, Vagrant, Vim Text Editor, RSpec, Cucumber, HTML, JavaScript, Code Review, Source Code Review, Task Analysis, CSS

Technical Director

2012 - 2019

Omakase BV

Architected a community platform with social features like a web feed, discussion board, live chat, and job board.
Set up CI/CD pipelines and monitoring. Managed infrastructure and tuned a bare-metal server configuration to maximize performance.
Managed a team consisting of designers, front- and back-end developers, and freelancers.

Technologies: Ruby on Rails (RoR), XML, REST, JSON, Elasticsearch, APM, Capistrano, CI/CD Pipelines, Amazon S3 (AWS S3), Amazon CloudFront CDN, DevOps, Technical Leadership, Sass, Redis, SSH, HTML, JavaScript, Technical Hiring, Code Review, Source Code Review, Task Analysis, Interviewing, CSS

Junior Full-stack Web Developer

2012 - 2015

Multimedium

Started with no professional background or education and quickly took the position as the lead front-end developer.
Build an asset management tool for a large supplier of dentistry products.
Launched audience engagement games on eCommerce websites with more than 10,000 entries.

Technologies: PHP, CodeIgniter, WordPress, Less, JavaScript, BrowserStack, Litmus, Bootstrap, Backbone.js, jQuery, Craft CMS, Symphony, FTP, Subversion (SVN), CodeKit, Coda, NetBeans, HTML, Source Code Review, CSS

Experience

Community Platform for Field Hockey

https://scorrd.com

Built and launched the leading hockey network, a corporate venture with the world's largest sports retailer. I architected the platform and led a team of developers. The application was built as an SSR application with a fully featured API that served native mobile apps.

Etixx Sports eCommerce Platform

https://etixxsports.com

A Ruby on Rails-based web application that sells sports nutrition online and through local pharmacies.

My role was to upgrade an existing web shop to become a platform with complex integrations including stock management, warehousing, fulfillment, third-party loyalty programs, and online payment providers.

My contributions included:
• Set up support for multiple locales and languages
• Integrated third-party webhooks and APIs
• Refactored the front end and implemented a reusable component library
• Set up a custom-made CMS for eCommerce management
• Set up notifications via websockets

Skills

Languages

Ruby, HTML, JavaScript, CSS, PHP, CoffeeScript, Sass, Less, XML, Unicorn

Frameworks

Ruby on Rails 5, Ruby on Rails (RoR), Ruby on Rails 4, Bootstrap, OAuth 2, Dropzone.js, Chrome, CodeIgniter, Redux, Swagger

Other

Technical Hiring, Code Review, Source Code Review, Task Analysis, Interviewing, Statistics, Physics, LiDAR, Innovation Labs, University Teaching, Coaching, Learnability, Presentations, Ruby Gems, CAPTCHA, Puma, Foreman, Symphony, FTP, CodeKit, APM, CI/CD Pipelines, Technical Leadership, SSH, Web Consulting, SEO Marketing, Paid Advertising, Postmark, SOAP

Tools

IntelliJ, Sublime Text, GIS, Vagrant, Vim Text Editor, RSpec, Cucumber, Redactor, Mailchimp, Capistrano, Amazon CloudFront CDN, Photoshop CC, Figma, Sketch, Oh My Zsh, Slack, BrowserStack, Litmus, Subversion (SVN), Coda, Ansible, Terraform, GitHub, Git, Illustrator CC, Solr, Jenkins, GitLab, Postman

Libraries/APIs

jQuery, Highcharts, ImageMagick, Sidekiq, Slack API, Google Maps API, Google Analytics API, Backbone.js, Ruby on Rails API, Vue, SendGrid API, React, React Redux Form

Paradigms

Load Testing, REST, DevOps

Platforms

DigitalOcean, New Relic, Phusion Passenger, MacOS, WordPress, Craft CMS, NetBeans, Docker, Nexus

Storage

Redis, Elasticsearch, Amazon S3 (AWS S3), JSON

Education

2011 - 2012

Master's Degree in Education

Universiteit Antwerpen - Antwerpen, Belgium

2009 - 2011

Master's Degree in Biology

Universiteit Antwerpen - Antwerpen, Belgium