Jurgens is available for hire

Jurgens du Toit

Verified Expert in Engineering

Architecture Developer

Location

Johannesburg, Gauteng, South Africa

Toptal Member Since

November 19, 2014

As an expert full-stack developer with an in-depth knowledge of the internet and web applications, Jurgens prides himself on understanding client requirements and delivering code and systems to meet these requirements. He has worked on a wide range of products, including web applications, APIs, and integrations with companies like MasterCard and Visa.

Web Development Integration Software Development Back-end Full-stack PHP Automation REST APIs Elasticsearch Object-oriented Programming (OOP)Ubuntu Amazon EC2 Laravel Ruby on Rails (RoR)Sinatra

Portfolio

Automation Exchange

Multitenancy, Continuous Delivery (CD), Amazon Web Services (AWS), REST APIs...

Jade IT CC

Laravel, Amazon Web Services (AWS), Elasticsearch, Symfony, Sinatra...

Dimension Data

ServiceNow, JavaScript, Webhooks, REST APIs, Web Development...

Experience

REST APIs - 8 years Elasticsearch - 7 years Ruby - 5 years Amazon Web Services (AWS) - 5 years Architecture - 4 years PostgreSQL - 3 years Agile Software Development - 2 years Continuous Deployment - 2 years

Availability

Part-time

Preferred Environment

Laravel, Ruby, Amazon Web Services (AWS), Ubuntu, Sublime Text, Git

The most amazing...

...experience was creating a mass email marketing system that enables the client to send hundreds of thousands of emails a month in South Africa.

Work Experience

Systems Architect

2016 - PRESENT

Automation Exchange

Completely automated the release process using Gitlab CI.
Migrated the C# background service to Sidekiq workers.
Guided and coached a growing team of developers, training them in various technologies.
Designed and architected an ecosystem of fiber network management systems.

Technologies: Multitenancy, Continuous Delivery (CD), Amazon Web Services (AWS), REST APIs, Elasticsearch, Microsoft SQL Server, C#, Linux, Sidekiq, Ruby, REST, Webhooks, Amazon Simple Email Service (SES), Agile Software Development, Logstash, Git, Architecture, JavaScript, Software Architecture, Interviews, Interviewing, Code Review, Source Code Review, Technical Hiring, Microservices, Full-stack, Web Development, Integration, SDKs, Amazon RDS, Performance, Scalability, Serverless, Ruby on Rails (RoR), HTML, Secure Web Development, Application Security, Software Development, Automation, Back-end

Owner

2007 - PRESENT

Jade IT CC

Designed and developed a system to manage rentals and rental payments.
Conducted basic data mining for a local university to determine the achievements of its first-year students.
Managed and monitored the AWS infrastructure for a small mobile application company.
Integrated with various APIs, like Facebook, Twitter, Instagram, and MotorMouths, for different projects.
Implemented a document management system with fuzzy searching and an API in Rails.

Technologies: Laravel, Amazon Web Services (AWS), Elasticsearch, Symfony, Sinatra, Ruby on Rails (RoR), Ruby, PHP, Webhooks, Agile Software Development, Logstash, Git, Architecture, Software Architecture, Microservices, Full-stack, Web Development, Integration, SDKs, Amazon RDS, Performance, Scalability, Serverless, HTML, Secure Web Development, Application Security, Software Development, Automation, Wamp, LAMP, Apache2, Bitbucket, Back-end, Stripe

Technical Analyst

2015 - 2016

Dimension Data

Developed technical specifications.
Implemented technical specifications.
Tested and released changes.

Technologies: ServiceNow, JavaScript, Webhooks, REST APIs, Web Development, Software Development, Wamp, LAMP, Apache2

Senior Developer

2013 - 2015

Tutuka

Implemented a log data store using Elasticsearch, Logstash, and Kibana.
Designed and implemented an API proxy to enable the rapid integration of third-party APIs.
Assisted in integrations with MasterCard and Visa for international clients.
Set up and ran Ubuntu 12.04 infrastructure to support the Elasticsearch setup, including taking them through PCI compliance.

Technologies: PCI, Ruby, Microsoft SQL Server, Adobe ColdFusion, REST, Webhooks, Agile Software Development, REST APIs, Git, Architecture, Software Architecture, Full-stack, Integration, SDKs, Performance, HTML, Secure Web Development, Application Security, Software Development, Automation, Apache2, Back-end

Lead Developer

2012 - 2013

Everlytic

Migrated the version control system from SVN to Git.
Integrated with the Facebook, Twiiter, and Google Analytics APIs.
Mentored the development team in good design and best coding practices.
Expanded the testing infrastructure to get more code under test.
Guided the integrations team in developing solutions needed by clients.

Technologies: REST APIs, Google Analytics API, Twitter API, Facebook API, MySQL, PHP, REST, Software Architecture, Web Development, Integration, SDKs, HTML, Software Development, Apache2, Back-end

Systems Developer and Head of Development

2009 - 2012

Branded Internet

Created an API to enable wholesale selling of ADSL and other ISP services.
Implemented source control for the codebase.
Expanded systems to enable quicker resolution of support queries.
Designed and implemented a new customer portal to enable quicker go-live for new clients.
Mentored the development team in best practices and design methodology.

Technologies: Multitenancy, Linux, PHP, REST APIs, Architecture, Full-stack, Web Development, Integration, SDKs, HTML, Software Development, Back-end

Developer

2006 - 2007

Cherry Creek Software

Developed a questionnaire system implemented on handhelds in JavaScript.
Increased the usability of the company's core product by resolving bugs and improving the flow of the product.
Implemented a simple spell checker to allow fuzzy matching of words sent in a SMS campaign.
Created a CMS for an international customer.
Consulted on the needs of international clients.

Technologies: Visual Basic 6 (VB6), JavaScript, Web Development, Software Development

Experience

ProxES

ProxES is an Elasticsearch application framework that allows a developer to add security, access control, and basic reporting to an Elasticsearch cluster. It allows users to manage and monitor their Elasticsearch infrastructure simply and easily.

Ready to Send

https://members.readytosend.com

A mass email marketing system built using PHP, Laravel, and AWS services like SES, SQS, EC2, and RDS. The system enables the client to send hundreds of thousands emails a month to the real estate industry in South Africa.

Sequel::Elasticsearch

https://github.com/jrgns/sequel-elasticsearch

Sequel::Elasticsearch allows you to transparently mirror your database, or specific tables, to Elasticsearch. It's especially useful if you want the power of search through Elasticsearch but also the sanity and structure of a relational database.

Logstash CloudWatch Plugin

https://github.com/EagerELK/logstash-input-cloudwatch

This Logstash plugin pulls statistics on various metrics from the AWS CloudWatch service on regular intervals. This allows the user to import data from CloudWatch into data systems such as Elasticsearch. Built in Ruby.

EagerELK: Elasticsearch, Logstash, and Kibana

This is a blog about the ELK stack: Elasticsearch, Logstash, and Kibana. On it, you can learn how to set up the various products and use them in multiple ways.

Personal Blog

http://jrgns.net

A blog used to record the progress of my technical knowledge and skills.

Publication

Logstash Tutorial: Using Logstash to Streamline Email Notifications

https://www.toptal.com/java/using-logstash-to-streamline-email-notifications

Skills

Languages

Ruby, PHP, HTML, SQL, JavaScript, CSS, Visual Basic 6 (VB6), C#, C#.NET

Frameworks

Laravel, Ruby on Rails (RoR), Sinatra, Bootstrap, Symfony

Libraries/APIs

REST APIs, Sidekiq, Sequel, API Development, Pundit, Rack, React, jQuery, Stripe, Facebook API, Twitter API, Google Analytics API

Tools

Logstash, Git, RSpec, RuboCop, Amazon CloudWatch, JSX, Amazon Simple Email Service (SES), Amazon Simple Queue Service (SQS), AWS CodeDeploy, GitLab, Ansible, Bitbucket, Adobe ColdFusion, Sublime Text

Paradigms

Object-oriented Programming (OOP), Object-oriented Design (OOD), REST, Automation, DevOps, Continuous Integration (CI), Continuous Delivery (CD), Scrum, Continuous Deployment, Agile Software Development, Microservices, Event-driven Programming

Platforms

Ubuntu, Amazon EC2, Amazon Web Services (AWS), LAMP, Apache2, Linux

Storage

Elasticsearch, MySQL, PostgreSQL, Microsoft SQL Server, Redis

Other

Freelancing, Architecture, Multitenancy, APIs, Software Architecture, Full-stack, Web Development, Integration, Software Development, Back-end, Webhooks, SDKs, Amazon RDS, Performance, Scalability, Serverless, Secure Web Development, Application Security, Wamp, PCI, ServiceNow, Interviews, Interviewing, Code Review, Source Code Review, Technical Hiring

Education

2004 - 2007

Master of Science Degree in Computer Science

University of Johannesburg - Johannesburg, South Africa

2000 - 2004

Bachelor of Science Degree in Computer Science, with Honors

University of Johannesburg - Johannesburg, South Africa

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