Co-founder and Chief Technology Officer
2014 - 2019Home Run (Convibo, Ltd.)- Built a bespoke commerce platform from scratch, allowing customers to shop from multiple supermarkets, and get their groceries delivered in as little as one hour.
- Created an intelligent order management system assigning orders to shoppers, and drivers as well as a capacity management system to make sure all orders would be delivered on time.
- Built a self-learning, out-of-stock replacement recommendation system tailored to every customer to decrease the time lost in communicating potential replacement options to customers.
- Developed systems for multi-order picking as well as in-store route optimization to increase shopper efficiency.
- Created a real-time operations management dashboard, tools to manage orders, and track employees’ progress, and current location.
- Built product catalog integrations with UK’s largest supermarkets.
- Led the tech team.
Technologies: Ruby on Rails, PostgreSQL, Redis, Memcached, Elasticsearch, AWS, StripeDeveloper
2004 - 2019Freelance- Created a bespoke, multilingual medical invoicing application for a clinic.
- Built dynamic lab analysis reports for pattens to explain the meaning of their current results, rather than a generalized explanation per parameter.
- Developed a bespoke Mac app to simplify tracking services provided to patients, and invoicing them.
Technologies: Ruby on Rails, PostgreSQL, Wkhtmltopdf, Swift, Heroku
Christian Lerke
Software Developer in Puerto de la Cruz, Spain
Member since April 1, 2019
Christian is a senior developer and entrepreneur with over a decade of professional experience building full-stack solutions. As the co-founder and tech team lead of his own startup, he has learned the importance of iterating quickly, and delivering results on time.
Christian is now available for hire
Portfolio
- Home Run (Convibo, Ltd.)Ruby on Rails, PostgreSQL, Redis, Memcached, Elasticsearch, AWS, Stripe
- FreelanceRuby on Rails, PostgreSQL, Wkhtmltopdf, Swift, Heroku
Experience
- JavaScript 15 years
- Ruby 15 years
- Ruby on Rails (RoR) 15 years
- PostgreSQL 10 years
Availability
Part-time
Preferred Environment
MacOS, Sublime Text, GitHub
The most amazing...
...system I've built was an on-demand grocery picking, and delivery platform, with in-store route optimization, live out-of-stock replacement, and order tracking.
Employment
Experience
- Shopping with Pat (Development)https://shoppingwithpat.com
This app is an intelligent meal planner, and takes into account your preferences, and the people you're cooking for to build a tailored meal plan. This helps reduce waste, and save you money by reusing leftover ingredients from previous meals later in the week.
I built the back end of this project allowing for the input of all the recipes and ingredients as well as the underlying logic to construct the meal plans.
This project was executed in less than two months from start to finish.
Skills
Languages
Ruby, HTML, JavaScript, SQL, CSS, Sass, HamlFrameworks
Ruby on Rails (RoR), Bootstrap, Factory GirlStorage
PostgreSQL, Memcached, Redis, MySQL, AWS S3, AWS RDS, Elasticsearch, SQLiteLibraries/APIs
jQuery, Stripe API, Facebook API, Sidekiq, Google Maps API, Google Charts API, Slack API, Intercom API, Nokogiri, React, Google APIs, Telegram Bot API, MailChimp API, Zendesk API, Backbone.js, Backbone.Marionette, Moment.js, Underscore.js, DeviseTools
AWS EBS, Slack, SendGrid, MailChimp, wkhtmltopdf, MATLAB, Capistrano, RSpecPlatforms
AWS EC2, Adobe Suite, Ably, Mandrill, LinuxParadigms
Agile Software Development
Education
- Master's degree of Science in Innovation and Entrepreneurship2013 - 2014University of Warwick - Coventry, United Kingdom
- Bachelor's degree of Science (Honors) in Robotics2009 - 2013University of the West of England - Bristol, United Kingdom
