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$75 USD / hour
sofia, bulgaria
$75 USD / hour
It's currently 3:10 PM here
Joined May 15, 2019
0 Recommendations

Stefan Holm O.


5.0 (7 reviews)
$75 USD / hour
sofia, bulgaria
$75 USD / hour
Jobs Completed
On Budget
On Time
Repeat Hire Rate

.Net and Azure developer - GUARANTEED quality work

You need a developer who can quickly and efficiently deliver quality work, be it new development, bug fixing or optimization. Here are some reactions from some clients I have helped. "Stefan knows his stuff. He demonstrated exceptional craft and knowledge, well beyond the development skills of many developers." - Mike U. - "Five star all the way. Great communication as we worked and he provided a very elegant solution. I'll be using Stefan again and recommend him to you." - Between Coffees Welcome to my profile. I am Stefan Olsen. I am a Danish senior software developer and solution architect, specialised in building business software. I am an Episerver MVP and 3x certified Episerver CMS Developer. A highly motivated professional, I am always looking out for my clients best interests. These are some things I have done a lot: - Websites, webshops or portals based on CMS platforms like Episerver or Umbraco - Web apps based on ASP.Net MVC or ASP.Net Core - Web app frontends based on VueJS, ReactJS or similar Javascript frameworks - Windows desktop applications - Payment platform integrations - Email and SMS sending integrations - SQL Server queries and procedures - Integrations based on Azure Functions, ServiceBus and/or NoSQL databases - Profiling, measuring and optimization of .Net and SQL code If you are tired of cheap and bad developers, promising great work but not delivering on time or quality, then give me a try. Find out what quality work means. Regards Stefan O.
Freelancer ASP Developers Bulgaria

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Portfolio Items

For a market research company, I maintained, developed and extended a SaaS website survey widget. This widget were/is included on many customer websites to gather information about visitor's demographics, browsing behavior and subjective opinion about the website in question.
I made substantial extensions to functionality, mobile optimizations and editor interfaces.
Technically, I implemented custom output caching (with invalidation through a custom messaging channel), very advanced SQL databases and a custom templating engine, based on XML/XSL and later ASP.Net.

"I've met Stefan from customer side in IT-projects. He struck me as professional and knowledgeable while being easy to communicate with. He delivered on time, showed great enthusiasm and seemed like a person who enjoys the field he is working in."
SaaS website survey widget
I implemented a multi-tenancy password portal for private schools in Denmark, for students to change passwords, update phone number and email address and to accept the terms and conditions for using the school IT platform.
The portal has password reset features that propagates changes to local RADIUS and Active Directory servers. Forgot password integrates both to an SMS gateway and to Recaptcha validation.
Teachers can also log in and send bulk SMS to classes or specific students.
School password portal
Based on Episerver CMS, ReactJS and custom integrations, we created a new integrated webshop. Both technical performance and conversion rates increased significantly, and editing became much easier than with the previous bespoke webshop.
Integrated ticketing webshop based on Episerver CMS
Based on Episerver CMS, Episerver Commerce and InRiver PIM, my team created an integrated and user-friendly webshop for broadband customers.
Integrated webshop for broadband connections (phase 1)


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Showing 1 - 5 out of 7 reviews
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$2,000.00 USD
We delivered a slow site analyzing tasks to Stefan, to help us understand what preformance issues we have with our fairly large EPI installation. After a few questions and a few days we received a well organized report, with all the findings in prioritized order and with suggestions on how to solve our problems. He found several issues in different parts of our solution, from extensive queries, caching and code so. We highly recommend Stefan, and will bring him onboard in future tasks!
ASP SQL ASP.NET Microsoft SQL Server
+1 more
Flag of Anders R. @anderswroine
2 years ago
$600.00 USD
Stefan knows his stuff. He demonstrated exceptional craft and knowledge, well beyond the development skills of many developers. From the outset it was clear that he understood the requirements, as well as the potential issues we could encounter in the project. His communication was fantastic and prompt. I have my new favorite developer!
ASP VBScript
Flag of Mike U. @GetTeck
2 years ago
€67.50 EUR
Todo el trabajo a tiempo, Comunicación y comprensión del problema, lo volveré a contratar.
+1 more
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Flag of Miguel E. @miguelestevezb
2 years ago
€120.00 EUR
Comunicación, resultado y comprensión del probelma. Satisfecho y lo volvería a contratar.
PHP Active Directory Azure
User Avatar
Flag of Miguel E. @miguelestevezb
2 years ago
$55.00 USD
Stefan delivers on time, on budget and successfully every time. He's my go-to for work when I need work done.
+1 more
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Flag of Anthony M. @awmalloy
2 years ago


Senior Backend Developer and Architect

"Ecommerce Startup Company in Dubai"
Apr 2018 - Present
- Solution architecture and development of web solutions based on EPiServer CMS, Commerce, DXC and Find - Thorough performance optimization and refactoring of the existing solution throughout the entire software stack (SQL Server, .Net profiling etc.) - Optimization of development, build and deployment processes - Adoption of cloud native technologies - Profiling of memory allocation, code performance and SQL execution plans - Integration with payment providers and push notification platforms

Senior Episerver Developer

Valtech Denmark
Oct 2016 - Mar 2018 (1 year, 5 months)
I worked with international clients in a multi-cultural environment. I design and develop solutions on EPiServer CMS and Commerce and I create integrations for InRiver iPMC. I have been an EPiServer tutor/coach to three new developers at the 2017 Talent Programme. I was certified in EPiServer CMS 10 with outstanding test results. I also got certified in InRiver development. Besides, I enjoy sharing ideas and solutions with likeminded professionals, through writing articles on my technical blog.

EPiServer Consultant

Capgemini Sogeti Denmark
Oct 2015 - Sep 2016 (11 months, 1 day)
At Capgemini Sogeti I worked 12 months on-site, as certifed EPiServer CMS specialist on a webshop project for a large danish company. My role was Lead Backend EPiServer Developer. I also began writing technical blog posts about EPiServer CMS and other technologies, focusing on proof-of-concepts of ideas. As a consultant I have been a sparring partner, gladly sharing knowledge and ideas with Product Owners, fellow developers and testers.


MSc in Business Administration and Information Systems

Copenhagen Business School, Denmark 2011 - 2014
(3 years)

BSc in Business Administration and Computer Science

Copenhagen Business School, Denmark 2007 - 2010
(3 years)


Episerver Most Valued Professional (EMVP)


Certified inRiver Developer


Certified EPiServer 10 CMS Developer

Expires August 2019.

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Top Skills

ASP 6 SQL 5 ASP.NET 5 Microsoft SQL Server 5 .NET 3

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