Upwork home
Sign Up
Secondary
Mark S.

Mark S.

Alicante, Spain
Job Success
Top Rated

Senior Level App & Full Stack Web Developer

ABOUT ME I'm a full time freelance software developer and consultant, highly experienced in designing, developing and managing web, mobile and desktop applications of all sizes. I've been developing software commercially since 1998, and a hobby programmer since my childhood. Previous clients and work experience include DHL, Securicor Omega Express, Capscan, Monsternett AS, The Restaurant Zone LLC, Sunfly, Dooster, Claims4Free and more. I'm a native English speaker, originally from London and currently living in Alicante, Spain (CET). WHY SHOULD YOU HIRE ME? Let's be honest .. you've probably seen my bid and thought, "Wow, that's a little higher than some of the others, what makes this fellow worth it?" Well .. hire me and you'll see why. For a start, all of my clients receive my private contact details and can reach me directly, and often instantly whenever they need me. No middle men, agency or answering services, you get to talk directly to the person working on your code. I offer a flexibility towards my clients needs that is hard to find in this industry and will happily adapt my working hours to suit your needs, whether you need just a few hours every now and then, or a huge dedicated burst to meet a deadline, you'll find you can count on me to deliver. Not only do I pride myself on producing clean, robust test-driven and fully linted code, but because it's second nature to me I can also do this fast and efficiently. I'm confident that you'll not only receive outstanding results, but as my many repeat clients will agree, you'll end up getting far more value than my cheaper competitors. I'm also very picky about the projects I choose to bid on, only pursuing ones that I feel will be truly engaging over the long term. By doing this you'll find that I throw myself into my work like nobody else. You'll find that you'll get not just a developer, but an individual who's genuinely passionate about what he does and someone you can rely on to handle every technical aspect of your project from start to finish and beyond if needed. EXPERIENCE AND QUALIFICATIONS I am widely experienced in several areas of software development having undertaken a large range of jobs over the years from traditional desktop applications to modern cloud and mobile based technologies. My speciality areas include: - Back end web and application development with Python / Django / Flask. - Front end web and single page development with Javascript and Typescript (inc JQuery, Angular, Bootstrap). - Web development and administration with PHP (inc Yii & Symfony). - Mobile application development with Java, C, Python and / or Javascript with Cordova / PhoneGap / Appcelerator - Cross platform desktop application development including Windows, Mac, Linux and Android using C++, Java and more recently Javascript with Atom / Electron. - Unity 3D / C# / Unreal engine game development. Other key skills include the following: - Test driven development as standard - Code profiling and optimization (particularly for high traffic sites) - Docker & Vagrant - Amazon Web Services - Bootstrap - SQL, Database design deployment and scaling (including MySQL, PostgreSQL, and NoSQL solutions such as Apache Cassandra) - Multimedia Processing & Delivery (inc working with Flash Media Server, Wowza and WMS, as well as developing custom media processing and playback solutions in C++) I am a strong supporter of open source technologies and use Linux as my primary work platform. In addition to Linux, I also have significant development experience on Windows and many Windows specific toolchains such as Visual Studio as well as moderate experience with both desktop and mobile application development on OSX. I am happy to consider projects of all shapes and sizes, and pride myself on offering a fast, friendly and reliable service, and am always happy to push the extra mile for you. Programming has been my passion from an early age and I take great pride in the work I provide, always aiming to perceive the long term goals of any project and avoiding shortcuts in order to build the best product possible. Up to date references and examples of my recent work are available upon request.
Jun 7, 2017 - Aug 30, 2017

No feedback given

Private earnings
Rating is 5 out of 5.
5.00 Oct 13, 2016 - Oct 28, 2016

"Great experience working with Mark, will be using him again in the future. Very organized and efficient!"

Private earnings
Rating is 5 out of 5.
5.00 Dec 8, 2014 - Apr 16, 2015

"Software13 are extremely capable and knowledgeable. Highly recommended."

Private earnings
Rating is 5 out of 5.
5.00 Aug 13, 2014 - Aug 18, 2014

"Awesome guy to work with, knows his stuff. Already hired him again for another project!"

Private earnings
Rating is 5 out of 5.
5.00 Nov 23, 2012 - Nov 26, 2012

"Very professional. We love him!"

Private earnings
Rating is 5 out of 5.
5.00 Aug 20, 2012 - Aug 22, 2012

"Excellent programmer, very helpful and got the job done right the first time."

Private earnings
Rating is 5 out of 5.
5.00 Feb 13, 2012 - Feb 15, 2012

"Great work! Professional, timely and courteous. The job was done exactly as I requested."

Private earnings
Rating is 5 out of 5.
5.00 Dec 28, 2009 - Apr 9, 2010

"Great work and great communication. What more can I say!"

Private earnings
Rating is 3.9 out of 5.
3.90 Sep 29, 2009 - Oct 21, 2009

"Software 13 was very helpful in competing our joomla! template on time! Mark was responsive and professional, I would recommend him to anyone. Thank you! Andy Law Webagencies.com"

Private earnings
Rating is 5 out of 5.
5.00 Sep 9, 2009

"Extremely fast (same day) and exactly as needed. Worked the first time/no bugs. Thanks Mark."

Private earnings
Mark S. has more jobs. Create an account to review them

Skills

Mark S.

Mark S.

Alicante, Spain
Job Success
Top Rated
39
Total Jobs
1,921
Total Hours

Senior Level App & Full Stack Web Developer

Specializes in
ABOUT ME I'm a full time freelance software developer and consultant, highly experienced in designing, developing and managing web, mobile and desktop applications of all sizes. I've been developing software commercially since 1998, and a hobby programmer since my childhood. Previous clients and work experience include DHL, Securicor Omega Express, Capscan, Monsternett AS, The Restaurant Zone LLC, Sunfly, Dooster, Claims4Free and more. I'm a native English speaker, originally from London and currently living in Alicante, Spain (CET). WHY SHOULD YOU HIRE ME? Let's be honest .. you've probably seen my bid and thought, "Wow, that's a little higher than some of the others, what makes this fellow worth it?" Well .. hire me and you'll see why. For a start, all of my clients receive my private contact details and can reach me directly, and often instantly whenever they need me. No middle men, agency or answering services, you get to talk directly to the person working on your code. I offer a flexibility towards my clients needs that is hard to find in this industry and will happily adapt my working hours to suit your needs, whether you need just a few hours every now and then, or a huge dedicated burst to meet a deadline, you'll find you can count on me to deliver. Not only do I pride myself on producing clean, robust test-driven and fully linted code, but because it's second nature to me I can also do this fast and efficiently. I'm confident that you'll not only receive outstanding results, but as my many repeat clients will agree, you'll end up getting far more value than my cheaper competitors. I'm also very picky about the projects I choose to bid on, only pursuing ones that I feel will be truly engaging over the long term. By doing this you'll find that I throw myself into my work like nobody else. You'll find that you'll get not just a developer, but an individual who's genuinely passionate about what he does and someone you can rely on to handle every technical aspect of your project from start to finish and beyond if needed. EXPERIENCE AND QUALIFICATIONS I am widely experienced in several areas of software development having undertaken a large range of jobs over the years from traditional desktop applications to modern cloud and mobile based technologies. My speciality areas include: - Back end web and application development with Python / Django / Flask. - Front end web and single page development with Javascript and Typescript (inc JQuery, Angular, Bootstrap). - Web development and administration with PHP (inc Yii & Symfony). - Mobile application development with Java, C, Python and / or Javascript with Cordova / PhoneGap / Appcelerator - Cross platform desktop application development including Windows, Mac, Linux and Android using C++, Java and more recently Javascript with Atom / Electron. - Unity 3D / C# / Unreal engine game development. Other key skills include the following: - Test driven development as standard - Code profiling and optimization (particularly for high traffic sites) - Docker & Vagrant - Amazon Web Services - Bootstrap - SQL, Database design deployment and scaling (including MySQL, PostgreSQL, and NoSQL solutions such as Apache Cassandra) - Multimedia Processing & Delivery (inc working with Flash Media Server, Wowza and WMS, as well as developing custom media processing and playback solutions in C++) I am a strong supporter of open source technologies and use Linux as my primary work platform. In addition to Linux, I also have significant development experience on Windows and many Windows specific toolchains such as Visual Studio as well as moderate experience with both desktop and mobile application development on OSX. I am happy to consider projects of all shapes and sizes, and pride myself on offering a fast, friendly and reliable service, and am always happy to push the extra mile for you. Programming has been my passion from an early age and I take great pride in the work I provide, always aiming to perceive the long term goals of any project and avoiding shortcuts in order to build the best product possible. Up to date references and examples of my recent work are available upon request.
Jun 7, 2017 - Aug 30, 2017

No feedback given

Private earnings
Rating is 5 out of 5.
5.00 Oct 13, 2016 - Oct 28, 2016

"Great experience working with Mark, will be using him again in the future. Very organized and efficient!"

Private earnings
Rating is 5 out of 5.
5.00 Dec 8, 2014 - Apr 16, 2015

"Software13 are extremely capable and knowledgeable. Highly recommended."

Private earnings
Rating is 5 out of 5.
5.00 Aug 13, 2014 - Aug 18, 2014

"Awesome guy to work with, knows his stuff. Already hired him again for another project!"

Private earnings
Rating is 5 out of 5.
5.00 Nov 23, 2012 - Nov 26, 2012

"Very professional. We love him!"

Private earnings
Rating is 5 out of 5.
5.00 Aug 20, 2012 - Aug 22, 2012

"Excellent programmer, very helpful and got the job done right the first time."

Private earnings
Rating is 5 out of 5.
5.00 Feb 13, 2012 - Feb 15, 2012

"Great work! Professional, timely and courteous. The job was done exactly as I requested."

Private earnings
Rating is 5 out of 5.
5.00 Dec 28, 2009 - Apr 9, 2010

"Great work and great communication. What more can I say!"

Private earnings
Rating is 3.9 out of 5.
3.90 Sep 29, 2009 - Oct 21, 2009

"Software 13 was very helpful in competing our joomla! template on time! Mark was responsive and professional, I would recommend him to anyone. Thank you! Andy Law Webagencies.com"

Private earnings
Rating is 5 out of 5.
5.00 Sep 9, 2009

"Extremely fast (same day) and exactly as needed. Worked the first time/no bugs. Thanks Mark."

Private earnings
Mark S. has more jobs. Create an account to review them

Skills

As Needed - Open to Offers

Browse similar freelancers

Ready to work with Mark S.?

Ready to work with Mark S.?

Already have an account? Log in