My passion is helping scale-up companies to build effective solutions to their tech challenges. I have worked with a wide variety of organisations, ranging from startups and charities, to scale-ups like Recharge.com, and large corporations such as Lloyds Bank UK, and Walt Disney Corporation. On top of my day job, I also love to work on personal projects, some of which are: * An app that uses AI to find dog-friendly locations (hotels, restaurants etc) * A platform for self-employed people which enabled them to quickly create an online setup with website, marketing emails, auto responders, advertising, etc. * A platform for music producers and DJs to market themselves and get feedback on unfinished work. (Much like SoundCloud, but 5 years before them) * A security product similar to LastPass, that allowed users to have a central point of authentication into multiple products. * A website that let users choose what types of gifts they would like for various occasions, and share this with friends. * A website for finding online streaming content that is worth watching, based on opinions of people you know and trust My tech knowledge and experience includes: Languages and frameworks: * Ruby, Python, JS(ES6), PHP * Rails, Sinatra, Padrino, Frank, Django, Symfony Applications: * Heroku, Apache, Caddy, Nginx, Passenger, Unicorn * Postgres, MySQL, Redis, MongoDB, Memcache Tools: * Git, GitHub, GitLab * Pivotal Tracker, Slack, Jenkins, Jira * Vagrant, AWS, Capistrano, Docker * Sphinx, Algolia, CDNs * Cloudinary, Intercom, TextMagic, MailGun, SendGrid, OneSignal, Pipedrive, Stripe, Quaderno * AppSignal, Sentry, Datadog, Rollbar Technologies and protocols: * REST, SOAP, GraphQL * HTML5, SASS, JSON, YAML, XML, SOAP, CSV * SMTP, POP3, IMAP, NNTP * NTP, RPC, NFS, * oAuth, SSH, SFTP * TCP/IP, UDP, OSPF * DNS, LDAP Libraries: * AASM, PaperTrail, Bootstrap, FontAwesome, Sequel ORM, ActiveRecord * Pry, Capybara, Poltergeist, Rspec, Rubocop * Resque, Sidekiq, DelayedJob, RabbitMQ * Devise, Pry * PyTorch

David Kelly

My passion is helping scale-up companies to build effective solutions to their tech challenges. I have worked with a wide variety of organisations, ranging from startups and charities, to scale-ups like Recharge.com, and large corporations such as Lloyds Bank UK, and Walt Disney Corporation. On top of my day job, I also love to work on personal projects, some of which are: * An app that uses AI to find dog-friendly locations (hotels, restaurants etc) * A platform for self-employed people which enabled them to quickly create an online setup with website, marketing emails, auto responders, advertising, etc. * A platform for music producers and DJs to market themselves and get feedback on unfinished work. (Much like SoundCloud, but 5 years before them) * A security product similar to LastPass, that allowed users to have a central point of authentication into multiple products. * A website that let users choose what types of gifts they would like for various occasions, and share this with friends. * A website for finding online streaming content that is worth watching, based on opinions of people you know and trust My tech knowledge and experience includes: Languages and frameworks: * Ruby, Python, JS(ES6), PHP * Rails, Sinatra, Padrino, Frank, Django, Symfony Applications: * Heroku, Apache, Caddy, Nginx, Passenger, Unicorn * Postgres, MySQL, Redis, MongoDB, Memcache Tools: * Git, GitHub, GitLab * Pivotal Tracker, Slack, Jenkins, Jira * Vagrant, AWS, Capistrano, Docker * Sphinx, Algolia, CDNs * Cloudinary, Intercom, TextMagic, MailGun, SendGrid, OneSignal, Pipedrive, Stripe, Quaderno * AppSignal, Sentry, Datadog, Rollbar Technologies and protocols: * REST, SOAP, GraphQL * HTML5, SASS, JSON, YAML, XML, SOAP, CSV * SMTP, POP3, IMAP, NNTP * NTP, RPC, NFS, * oAuth, SSH, SFTP * TCP/IP, UDP, OSPF * DNS, LDAP Libraries: * AASM, PaperTrail, Bootstrap, FontAwesome, Sequel ORM, ActiveRecord * Pry, Capybara, Poltergeist, Rspec, Rubocop * Resque, Sidekiq, DelayedJob, RabbitMQ * Devise, Pry * PyTorch

Available to hire

My passion is helping scale-up companies to build effective solutions to their tech challenges.

I have worked with a wide variety of organisations, ranging from startups and charities, to scale-ups like Recharge.com, and large corporations such as Lloyds Bank UK, and Walt Disney Corporation.

On top of my day job, I also love to work on personal projects, some of which are:

  • An app that uses AI to find dog-friendly locations (hotels, restaurants etc)

  • A platform for self-employed people which enabled them to quickly create an online setup with website, marketing emails, auto responders, advertising, etc.

  • A platform for music producers and DJs to market themselves and get feedback on unfinished work. (Much like SoundCloud, but 5 years before them)

  • A security product similar to LastPass, that allowed users to have a central point of authentication into multiple products.

  • A website that let users choose what types of gifts they would like for various occasions, and share this with friends.

  • A website for finding online streaming content that is worth watching, based on opinions of people you know and trust

My tech knowledge and experience includes:

Languages and frameworks:

  • Ruby, Python, JS(ES6), PHP
  • Rails, Sinatra, Padrino, Frank, Django, Symfony

Applications:

  • Heroku, Apache, Caddy, Nginx, Passenger, Unicorn
  • Postgres, MySQL, Redis, MongoDB, Memcache

Tools:

  • Git, GitHub, GitLab
  • Pivotal Tracker, Slack, Jenkins, Jira
  • Vagrant, AWS, Capistrano, Docker
  • Sphinx, Algolia, CDNs
  • Cloudinary, Intercom, TextMagic, MailGun, SendGrid, OneSignal, Pipedrive, Stripe, Quaderno
  • AppSignal, Sentry, Datadog, Rollbar

Technologies and protocols:

  • REST, SOAP, GraphQL
  • HTML5, SASS, JSON, YAML, XML, SOAP, CSV
  • SMTP, POP3, IMAP, NNTP
  • NTP, RPC, NFS,
  • oAuth, SSH, SFTP
  • TCP/IP, UDP, OSPF
  • DNS, LDAP

Libraries:

  • AASM, PaperTrail, Bootstrap, FontAwesome, Sequel ORM, ActiveRecord
  • Pry, Capybara, Poltergeist, Rspec, Rubocop
  • Resque, Sidekiq, DelayedJob, RabbitMQ
  • Devise, Pry
  • PyTorch
See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more

Language

English
Fluent
Dutch
Intermediate
French
Beginner
Spanish; Castilian
Beginner

Work Experience

Developer, tech engineer, leader, founder of an AI powered app. at WagFriendly
September 1, 2023 - June 19, 2024
WagFriendly is a platform that uses AI to help dog owners find dog-friendly places to visit, such as restaurants, cafes, pubs, shops, hotels, parks, etc. The platform collects data from dozens of sources and uses AI to determine how dog friendly a place is.
Company Owner at Futures Bright B.V.
November 1, 2016 - June 19, 2024
Futures Bright is the business entity used for freelance work. Recent and ongoing projects include working on the purchasing platform for Recharge.com, leading the technology strategy at Tradefox, improving existing features and creating new ones for SuperYacht Times, building new features for a personal accounting app at Rompslomp, creating from scratch the data analysis platform at StiVAD, and expanding the review platform at Olery.
Ruby on Rails Engineer (part time) at Soverin
February 1, 2025 - June 30, 2025
Helped Soverin with technical challenges by setting up debugging and observability to reduce diagnosis time, refactoring the domain handling backend into a robust system, building queue processing for spam filtering, overhauling the unit testing setup, and switching from a 2-week release cycle to CI/CD.
Senior Lead Full Stack Engineer at Stichting Vastgoeddata "StiVAD"
January 1, 2017 - January 31, 2025
Led development of StiVAD's online services, built a new platform from scratch to replace the old one, and continuously added new features over the years.
Senior Technical Lead and Ruby on Rails developer at Recharge.com
February 1, 2021 - May 31, 2023
Designed and coded backend technology connecting to multiple suppliers, fulfilling tens of thousands of orders daily. Achievements include redesigning supplier connection service, reducing order failure rate from 6% to 0.5%, creating a new type of circuit breaker, drastically reducing AWS costs, minimizing error debugging time, improving test coverage and pipeline execution time, refactoring nearly 300k lines of code, integrating 8 new suppliers in a year, and mentoring employees.
CTO and Rails developer at Tradefox
November 1, 2014 - April 30, 2021
Directed the full technical stack as CTO, designing and managing the technical infrastructure of the business intelligence platform, working with the development team, coding aspects of the platform, leading R&D, exploring partnerships, integrating with third parties, and managing contractors and freelancers.
Lead PHP + Ruby Developer and Systems Architect at Give.it - social gifting ecommerce platform
September 1, 2011 - October 31, 2014
Responsible for back-end development including designing and coding the company’s REST API, multi-server task scheduler, reporting tools, image processors, connectivity, and micro-services. Designed new style of e-commerce technology which was patented.

Education

Add your educational history here.

Qualifications

Method and system to facilitate social e-commerce
September 1, 2011 - September 1, 2011

Industry Experience

Software & Internet, Financial Services, Travel & Hospitality, Media & Entertainment, Non-Profit Organization
    paper WagFriendly.app

    WagFriendly is my side hustle. It’s a website that uses AI to find dog friendly places from a variety of different sources. It’s powered by a mixture of technologies.