About Me

I'm Dénes Bajnok, a software engineer, endurance athlete, and maker. I've finished four full-distance Ironman triathlons, including Barcelona in 9:51:30. The patience and long-term thinking that come with Ironman training show up in how I build software too. When I'm not racing, I'm usually 3D printing, tinkering with microelectronics and IoT, or playing competitive darts. I build things because I genuinely enjoy the process, whether that's a training plan, a circuit board, or a web app. If you've got an idea you want to make real, I'd be happy to help you build it.

Follow my training on Strava
TU Wien Alumnus4× IronmanIoT & MakerDarts Player

Skills

Web Development

ReactNode.jsTypeScriptJavaScriptNext.jsRuby on RailsPHPHTMLSCSS

Data & Backend

PythonSQLMySQLPostgreSQLFlaskDirectus

Infrastructure

Digital OceanDockerNginxLinuxGit

Other

CA-Frame (VR)

Endurance Stats

Running PBs

5K
18:37
10K
40:42
Half Marathon
1:29:30
Marathon
3:13:21
50K
3:45:33

Middle Distance

OldLakeMan2023
4:55:20
Swim
38:02
Bike
2:39:56
Run
1:33:17
Keszthely2024
4:39:08
Swim
33:38
Bike
2:32:32
Run
1:30:43
Balatonman Fűzfő2025
4:36:49
Swim
39:43
Bike
2:17:27
Run
1:34:10

Full Distance (Ironman)

eXtremeMan Nagyatád2021
11:50:44
Swim
1:20:13
Bike
5:41:21
Run
4:40:38
eXtremeMan Nagyatád2022
11:54:13
Swim
1:25:32
Bike
5:52:22
Run
4:25:32
eXtremeMan Nagyatád2023
9:52:17
Overall 6th place
Swim
1:20:33
Bike
5:12:29
Run
3:13:21
eXtremeMan Nagyatád2024
DNF
Did Not Finish
Swim
1:13:17
Bike
5:23:22
Run
DNF
IRONMAN Barcelona2025
9:51:30
Swim
1:14:21
Bike
5:06:31
Run
3:23:36