673 reputation
37
bio website jonisalonen.com
location Madrid, Spain
age
visits member for 2 years, 7 months
seen May 18 at 6:52

As a software engineer at a Qindel I've created software solutions that scale to hundreds of nodes for clients, including Vodafone, BBVA and Inditex.

My motto is making the right things, in the right way. All too often software is built that doesn't serve its purpose, or in a way that makes it cumbersome to use or impossible to maintain.

I'm a pragmatic full stack developer. I believe the proper way to software engineering and development is to take into account all parts of the system, from user interface to algorithm design and operating system internals, from requirements capture to testing and deployment. Everything is a trade-off, and good engineering is about making balanced choices between a continuity of options.


Jan
2
comment Find quadratic equation based on 2 tangents
In comments below you say you are looking for a parabola, and not just any quadratic equation. Do you have any limitations or preferences on the kind of a parabola, for example if its axis should be parallel to the X or Y axis?
Jan
2
comment Find quadratic equation based on 2 tangents
Yes, I realised the wording was unclear.
Jan
2
comment Find quadratic equation based on 2 tangents
This question appears to be off-topic because it is about mathematics. Questions on Stackoverflow should be at least tangentially related to computer programming.
Oct
23
comment Countability of polynomials
Each polynomial has a unique representation in the suggested scheme because each integer has a unique representation in base 10.
May
31
comment What will happen if I try to print an impossible solid into a 3D printer?
"closed as not constructive" How appropriate :D
Mar
17
comment One to one and onto
Neither of those are functions by the regular definition. The first one defines several mappings for one value, and the second doesn't define a mapping for 3.
Mar
17
comment Area enclosed between the curves $y=x^2$ and $y=60-7x$
The area is between 810 and 820. If you show your work someone can help you spot the mistake.
Mar
16
comment Function of $ \sqrt{2+\sqrt{2+\sqrt{2+}}}\ldots $
Why do you want to put it into a summation form? If you want to evaluate it a recurrence formula such as $x_{n+1} = \sqrt{2+x_n}$ is probably more fruitful.
Mar
14
comment What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)
@integral, don't underestimate a child's will to learn. I was exposed to fractals when I was 12-13 and was compelled to understand how they worked. That meant learning complex numbers and differential equations many years before my peers.
Feb
14
comment Generate unique integer from $n$ integers and solve to get the integers from result
By "in order" do you mean that $n_i < n_{i+1}$ ?
Jul
5
comment Proving that an expression divides a number
The second term in the sum is $3(n+1)(n+2)$. To show that it's divisible by 6 they need to show that $(n+1)(n+2)$ is even and then they substitute $(n+1)(n+2) = 2k'$.
Jan
26
comment clarification on the definition of group
What are subgroups then ? The excercise must have a mistake.