Study
I am currently pursuing a Master's degree in Applied Mathematics at the Technical University of Delft. My primary focus is on Numerical Analysis, which is a branch of mathematics that involves solving complex mathematical problems using computer approximations.
Work
Over the years, I have created over 30 websites, and managed and updated more than 100 others. Additionally, I have implemented dozens of APIs, integrating third-party services seamlessly into various web projects.
However, as I continue to grow and develop as a math student, I have chosen to focus my software development efforts on more challenging projects. Specifically, I prefer dedicating my time to complex coding, speed optimizations, security, and scientific computations. These are the areas that provide the greatest opportunity for me to learn and expand my skillset.
Due to my limited time, I am only accepting web design and implementation projects on an exceptional basis. If your project falls within my current focus areas and requires a high level of expertise and creativity, I would be delighted to collaborate with you.
Social impact
Besides my commitment to my studies and work, I'm passionate about making a positive impact on society. I take pleasure in analyzing rules and regulations, and finding innovative solutions to address critical issues. More importantly, I derive immense satisfaction from helping others, and if my work can positively impact the lives of individuals or communities, then it's a truly rewarding pursuit."Rentetruc"
As the interest rate on government bonds increased, it became common knowledge that student loan interest rates would also rise in 2023, leading to higher debt for many students. However, I proactively delved into the loan regulations, discovering a loophole where cancelling and reapplying for the loan could help avoid higher rates on the majority of the debt. Sharing my findings with TU Delta, the university's journalistic platform, led to national attention1 on what was dubbed the "rentetruc". Over 26,0002,3 students followed suit, collectively saving tens of millions of euros.
1. TU Delta - TU-student bedenkt truc om hoge studierente te ontwijken. ↩
2. TU Delta - Tienduizenden studenten doen truc met studierente: 'Absurd veel'. ↩
3. NRC - Een lagere rente voor de bulk van je schuld. Het idee van Joep (22) hielp veel pechstudenten. ↩
Contact
If you have any questions or would like to discuss a potential project, please feel free to contact me. I am always excited to collaborate and hear new ideas.
- joep@joepdejong.com
- Phone
- +31 6 1399 9469
- linkedin.com/in/joep-de-jong
- GitHub
- github.com/joepdejong
Encrypted communication
To ensure secure communication, I use various encryption methods, including PGP4 (general) and S/MIME 5 (email). If you would like to communicate with me securely, verify my identity, or give me access to certain applications, you can use one of the following public keys:
- My PGP key is
available on the OpenPGP keyserver. You can use it to send me encrypted messages or datatransfers.
My key fingerprint is:
26C0 4EDE 0F3F 25EB 6C6F 5897 E21D 7875 1D45 B143
- SSH (RSA) for Server Access
ssh-rsa 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 ssh@joepdejong.com
- Most of my e-mails are signed with my S/MIME key. This is a certificate that is issued by a trusted CA that validated my identity. I exchange this key after the first e-mail exchange.