About

DupWin AB is a Swedish single-person IT-consultancy company that is owned and operated by Kjell Winblad. The company is offering high-quality software architecture and engineering consultancy services.

✘

I am Kjell Winblad, the owner of DupWin AB. I love creating responsive and high-quality software systems that are enjoyable to use.

As a person, I am responsible, curious, and persevering. I love to challenge myself and learn new things. That is why I pursued a Ph.D. program focused on concurrent data structures and multicore synchronization after a few years of industry experience.

After completing the Ph.D. program, I have worked three years in the team that is developing and maintaining the open-source industry-strength programming language Erlang at Ericsson. In the Erlang team, I have, among other things, contributed significant scalability and responsiveness improvements to the Erlang run-time system.

With DupWin AB, I will give my customers high-quality software development services by leveraging the experience and knowledge that I have gathered from doing software development and research for over 15 years.

Sounds interesting?

Send an E-mail

LinkedIn Profile
Personal Page
GitHub Profile
CV (PDF)

Expertise

• Python
• Java
• C/C++
• Scala
• Erlang
• Golang
• JavaScript (jQuery, ReactJS)
• Multicore Optimizations
• Concurrency
• Data Structures and Algorithms
• Linux
• Godot Game Engine

Education

• Ph.D. Computer Science (Uppsala University)
• Master Computer Science (Uppsala University)
• Bachelor Computer Science (Umeå University)

Our Products

• PingFriend.com - A community platform for table tennis enthusiasts. Connect with players, create groups, upload match results, and engage in discussions about all things table tennis.
• PythonCode.club - A dedicated platform for Python programming challenges and collaboration. Participate in contests, solve a variety of coding problems, and engage with a community of like-minded developers.

Miscellaneous

• Competed in cross country skiing until age 20 (finished top 20 in several competitions with the best Swedish skiers in my age category)
• Top ranked on LeetCode.com (a competitive programming website)
• Personal Best 10km Running: 36m 15s
• Published papers in some of the top conferences and journal for concurrent algorithms
• Loves racket sports (especially table-tennis but nowadays mostly in VR)
• Does physical exercise almost daily (running, roller-skiing and swimming)

Contact

• Name: DupWin AB
• E-mail: kjellwinblad@gmail.com
• Telephone: (+46)73 053 5089
• Organization Number: 559331-0658
• Address: DupWin AB c/o Kjell Winblad, Fridshyddevägen 15, 19136 Sollentuna