Magazine

What I liked and disliked about F#

Development
2018-09-03

This year I moved and while unpacking I found this book in my collection which I kind of forgot; 'Real World Functional Programming with examples in F# and C#' by Tomas Petricek and Jon Skeet.

FRT
Backend

Hey new dads, let's take a baby holiday!

People
2018-07-13

Last month my daughter was born and what a revelation it was. I decided to take a baby holiday after the birth of my daughter. I would like to share my experience and hope that it inspires you.

FRT
Backend

Three ways to protect your website users against CSRF attacks

Development
Security
2018-06-12

Cross-site request forgery (CSRF) is a widely exploited vulnerability in websites where malicious requests are transmitted from a user who is trusted by the web application. CSRF attacks target state changing requests, not theft of user data since the attacker has no way to see the result of the request.

Alexander van Veelen

Backend

From Christmas present in the blockchain to massive bug bounty

Responsible Disclosure
Blockchain
2018-03-21

Last year we discussed our Christmas present and how we created and distributed it. However, there was one more thing we were working on that we were not allowed to talk about until now. It was a system flaw we found for an online crypto currency exchange while working on our Christmas present.

Jesse Lakerveld

FRT
Backend

About using immutability in Object Oriented programming

.NET
Development
People
2018-01-03

Change: We humans have a love/hate relationship with it. We like to tinker, toy, tweak, and by doing so, change something. We like to see that change when it in return gives us a feeling of accomplishment and/or purpose. We like to rock the boat. On the other hand, we like things to remain the same, which makes it clearer and easier for us.

Backend

Our Christmas present in the Blockchain?

Blockchain
2017-12-18

By now, I guess you know what Bitcoin is. And maybe you even know the distributed ledger technology behind it: the Bitcoin Blockchain. The big competitor is the Ethereum Blockchain. This year we provide clients and colleagues with a Christmas present that is wrapped in the Ethereum Blockchain.

Onboarding
Founder

Christmas Present in the Blockchain (technical approach)

Blockchain
2017-12-18

This year at VI Company we decided to do something different regarding the Christmas gifts we give to colleagues, relations and friends. Instead of the usual umbrella or chocolate we came up with the idea to give Ether, a cryptocurrency running on the Ethereum network. This article will shed some light on how we technically managed to register gifts in the blockchain and distribute them to the receivers.

Backend

GDPR: What it is and the steps VI Company is taking toward being compliant

Regulatory
2017-12-15

This article describes in a few simple steps how VI Company will become compliant with GDPR. Originally set up as an internal document, now an article that might be interesting for other service providers and as well clients, relations and anyone that deals with privacy sensitive data.

Onboarding
Founder

Cryptocurrency - The Money of the Internet

Blockchain
2017-09-28

Bitcoin, Litecoin and Ethereum. These are just three cryptocurrencies of the hundreds that are taking over as ways to pay online, all fighting to become the most popular. But what are cryptocurrencies and why do they exist?

Backend

Introducing our new shareholders

People
2017-08-02

For over 10 years we operated VI Company with a plain-vanilla shareholders set-up. As of last month, we have a third shareholder: our colleagues at VI Company. A brief explanation of why and how we did this.

Onboarding
Founder

Accessibility, Why Bother?

Accessibility
Design
2017-07-12

Lately, accessibility is getting more awareness. That's a good thing if you ask me. But there are still plenty of misconceptions standing in the way of a truly accessible web.

Frontend

Our first dotNed meeting

.NET
2017-07-03

On Thursday 22nd of June, we held our first dotNed meeting at VI Company. DotNed is the Dutch user group of .Net This organization strives to spread the knowledge regarding the .Net platform.

FRT
Backend

A template for starting digital projects on the same page

Design
Process
Development
2017-05-30

There’s a saying in Dutch that says ‘een goede start is het halve werk’ (I think the English equivalent is ‘well begun is half done’), that is particularly true for digital projects: the amount of energy invested in preparing projects is a pretty good indicator of how efficient the project will be later on. So what precisely is a good start then?

Bart-Jan Verhoef

Design

Nice looking system emails with MJML

Design
Development
2017-05-09

Did you ever design and develop an email template? Chances are you spent a great deal of time on the compatibility of your email to make sure it renders good in every client.

Design

Something different from your usual line chart

Data visualization
Design
2017-05-02

Koningsdag is a Dutch holiday where we celebrate the King’s birthday with a drink or two. This national holiday was a day prior the data visualisation workshop and I was therefore divided about giving up the evening part of Koningsdag for a ...

Design

Introduction to Nethereum Blockchain in dotNetCore

.NET
Development
Blockchain
Fintech
2017-03-21

This article describes the process of using a blockchain platform like Ethereum in dotNet core. The target audience are other dotNet developers who want to start with Ethereum. Understanding of blockchain is needed. In this article we construct a full example that ...

FRT
Backend

Zes jaar bij VI

Personal
2016-11-15

Na 6 jaar bij VI in Rotterdam trek ik op 16 december de deur van het Groothandelsgebouw achter mij dicht om op de boot te stappen naar Engeland. Een nieuw avontuur in Oxford gaat dan beginnen.

FRT
Backend

How to mitigate the risks of Robo advisors

Investment
Fintech
2016-11-18

A young affluent couple in their mid-twenties has cash to invest. These millennials are mistrusting of the traditional options available via the big banks and have been exposed to some pretty convincing marketing material from the alternative, a fintech offering robo advisor ...

Founder
CFA®-fundamentals

Should I be worried about my DIY-Excel behaviour?

Process
2016-08-22

You love Excel. You can do everything with it. It's back testing a new asset mix, a prototype report automation or a new idea about real time calculations of fair values. But you feel apprehensive as well because you know that these ...

Onboarding
Founder

How to code a pie? A designer’s adventure in C#

Data visualization
Development
2016-09-13

Last time, we looked at the maths of a pie chart and how to draw one with svg. Now that we know all that, we can start programming. For obvious reasons it's way more interesting to generate a pie chart with code ...

Design

How to code a pie? A designer’s adventure in maths and SVG

Data visualization
Development
2016-08-31

I always loved programming. In the days when Flash was all the rage, I spent hours and hours writing Actionscript: making page transitions as smooth as possible. But alas, all good things come to an end and Flash is no exception. After ...

Design

Why you shouldn’t let your manager judge you

Process
People
2016-08-18

It’s not that you’re not open to criticism, or don’t want to improve yourself. If you do your best all year, it’s strange to hear -out of the blue- what you haven’t done right afterwards. The performance review: We...

FRT
Backend

How to avoid prototyping pitfalls and maximize results

Design
Process
Testing
2016-07-22

Lately we receive a lot of requests for developing a prototype for online financial services. We notice that there seem to be many different understandings of what a prototype is, resulting in a lack of focus. In this blog we address the ...

Onboarding

Five questions your RFP shouldn’t go without

Process
2016-07-14

Poor support, diluted attention, untransparant rates… You’re done with it. You are chronically dissatisfied with your web- and software vendors. And you’re not alone.

Bart-Jan Verhoef

Design

6 reasons to switch to .NET Core

.NET
Development
2016-07-11

At VI Company, we develop most of our software in .NET MVC (currently at version 4.6.1) and we prefer to keep our projects running on the latest technologies to be able to offer the best experience possible to our end users.

Alexander van Veelen

Backend

Three simple steps to focus your functionalities

Design
Process
2016-06-14

Functionalities. We all love to come up with them. Functionalities are tangible and feel concrete. It’s only natural that when we think of a new website or app, we often start by establishing a list of functionalities. I know I do.

Bart-Jan Verhoef

Design

The five levels of growth in the digital age

Strategy
Process
2016-06-08

We’ve assisted many financials in improving their digital workflow. From departments who were just taking their first steps onto the web, to organizations who only needed fine-tuning of an already well-oiled process.

Bart-Jan Verhoef

Design

5 tips to become a great Product Owner!

Process
People
2016-06-06

The sprint is almost finished. Just two days before the demo. All stakeholders will be attending. Exciting! You know there is still a lot to be done and the budget is running low. Stressed out you ask the team: ‘Is it possible to...

Sophia van der Meijden

Scrum master
CFA®-fundamentals

Launch your financial website within just 8 weeks

Process
Fintech
2016-05-25

Your competitor launched a new website just last week. Which makes you think; your website is pretty outdated—Is it still relevant for your customers? You probably can’t afford to stay behind. But you’re in doubt.

FRT
Backend

Budgeting digital projects: getting your money’s worth

Process
Fintech
2016-05-18

“So how much will this website cost us?”, someone recently asked me. The first thing that came to mind was to counter with: “How much is it worth to you?”.

Bart-Jan Verhoef

Design

SRP Interview Kees de Koning Part II

Investment
People
2016-03-16

A few weeks ago Marc Wolterink from SRP, the leading online resource for the global structured products community interviewed our co-owner Kees de Koning. Their lengthy and lively conversation lead to not one but two articles published on SRP. Last week we've ...

Onboarding
Founder

SRP Interview Kees de Koning Part I

Investment
People
2016-03-16

A few weeks ago Marc Wolterink from SRP, the leading online resource for the global structured products community interviewed our co-owner Kees de Koning. Their lengthy and lively conversation lead to not one but two articles published on SRP. Today we are ...

Onboarding
Founder

Fintech: Resistance is futile – or is it?

Strategy
Fintech
Process
2016-03-10

The digital revolution has arrived in the financial services sector. In this article we examine the most important points set out by McKinsey in the light of their latest research, and we ask the question: What radical action is needed for banks ...

Founder
CFA®-fundamentals

Seven lessons issuers can learn from CFD brokers

Strategy
Fintech
2016-03-24

Last month, I had a dinner with a client. My wife joined us as well and at one point she asked: “What is the difference between a CFD broker and a Turbo / Sprinter issuer?” – The client started laughing and answered: “Well, one of them ...

Onboarding
Founder

Innovation that will improve your company in four steps

Strategy
Fintech
2016-02-09

Every company or department would like to innovate. The big question still remains how? The answer is actually quite simple: It’s in your people!

FRT
Backend

From product-driven to user-centred website in 7 steps

Design
Process
2015-09-30

While agile start-ups are putting out lean, MVP websites and apps in the market faster than you can spell 'Request For Proposal', many established financials are still crunching on big, complex projects that take forever to hit the market. Not only do ...

Bart-Jan Verhoef

Design

Why focusing on ROI for your business case could backfire

Process
Fintech
2015-11-16

Once upon a time there was a company. Said company had some bright minds who came up with great ideas. Some ideas were promoted to projects and some of these were successful.

Onboarding

Getting ready for MiFID-II & MiFIR

Regulatory
Strategy
Fintech
Process
2015-09-25

Financials beware: MiFID-II & MiFIR is coming, and it’s coming fast! It’s complex, highly controversial and it will hurt the unprepared. The new directive for financial markets in all European Economic Area member states will come into force on January 1st, ...

Onboarding
Founder

The persona is dead, long live the persona!

Process
Design
2016-01-21

Almost every marketing- or UX Research team has them, personas. They spend a lot of time and energy in creating them. Interview end-users, try to find out the demographic factors like age and income and write inspiring quotes that the personas could ...

Sophia van der Meijden

Scrum master
CFA®-fundamentals

How to empathize with (y)our customer

Process
Design
2016-04-07

What is empathizing all about? Why is it really necessary, not just for the financial markets but for any business?

Founder
CFA®-fundamentals

Vertical rhythm: the Holy Grail of front-end development

Design
Development
2016-01-21

Just like a horizontal grid, the vertical grid is used for structure and balance in design. Simply put: a vertical grid is the basis for good typography and harmonious alignment.

Design

The EZPZ Flexbox Grid might be just the grid for you

Design
Development
2016-01-21

The EZPZ Flexbox Grid is easy peasy to setup and use! All you need to do is download the .SCSS file, add it to your project, configure it just the way you like it and compile. That's all. You can now leverage ...

Frontend

Automated testing with Entity Framework takes some Effort

Testing
Development
2016-01-21

Our goal at VI Company is to write quality software. We have several processes in place to achieve and monitor this quality; continuous integration, code reviews and automated tests to name a few. In this article I want to take a closer ...

Niels van der Rest

Backend

Why we use Backbone.js

Development
2015-10-02

At VI Company almost all of our projects use Backbone.js and while we regularly take a look at other, more popular frameworks, like AngularJS and React, Backbone.js is still our go to library. In this article I will explain why.

Sebastiaan van Kerkfort

Frontend

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