Personal Info

Based in central London,
United Kingdom


RATE: from £320,- per day

Hello, I am
David Havl

Senior Software Engineer,
Node.js, JS, PHP, C#

I am a London based software engineer
with over one and half decade of experience
in architecture and development of complex business level web applications.

Software Development

I specialize in development of complex business application with PHP, Node.js, C# and Server Side Swift together with complimentary technologies on the back-end side and JS, TS, Vue and React on the front-end side.

Software Architecture

I am highly proficient in architecturing high performance, scalable and secure applications that can withstand the test of time. From infrastructure planning, through detailed technology choices to a fine tuned business logic details.

Support and Consultations

Thanks to my extensive experience and expertise with large scale sites and applications I can provide full support or consultation services for your existing project as well as bug fixing or infrastructure enhancement work.

My Profile

I am a Software Engineer/Architect primarily utilising Node.js, JS, PHP, C#.

I work mainly on contract/freelance bases.

I am what you call a full stack developer, particularly passionate about backend side and application architecture.
I have over a decade and half of experience in building commercial projects and complex business level web applications.
I love to constantly improve and learn new techniques and technologies.
I am also keen on working for startups as this is very often where I can fully unleash my potential and creativity while using bleeding edge technology.

Personal Details

Name: David Havl

Address: London, United Kingdom


Rate: from £320/day

My Career History

Software Engineer – contractor/freelancer [ 2005 - present ]

Full time independent freelance web application developer, primarily utilising PHP, JS, Node.js, C# and complimentary technologies (see list of my favorites in the rigth sidebar). Creating larger scale web applications for small to enterprise level businesses.

Desktop Software Engineer – contractor [ 2002 - 2005 ]

Desktop software developer utilising C++, C#, .NET, Winforms. Creating desktop applications for variety of business sectors.

My Awards

Freelancer of the year (2013) – Elance inc.

Winner of the "UK freelancer of the year in IT & Programming category" award by Elance inc.

My Skills

Preferred Back-end Technologies

  • Node.js
  • DENO
  • PHP
  • C#
  • ZF, Symfony
  • GraphQL
  • MySql, PostgreSQL, MongoDB
  • DynamoDB
Preferred Front-end Technologies

  • HTML5, CSS
  • Javascript, TypeScript
  • Vue.js
  • Quasar
  • React.js
  • AngularJS
Other Programming Skills

  • Untity3D
Dev-Ops Skills

  • CI/CD
  • AWS
  • GoogleCloud
Graphic Skills

  • Photoshop
  • Illustrator
  • Fireworks
Language Skills

  • English
  • Czech
  • Spanish
See my GitHub Account

My Portfolio

Some of my interesting projects

On majority of following projects I have worked as a lead developer and architect.

And more...