Cryptocurrency Exchange & Wallet Development

All cases are different and all clients have various goals and objectives. However, all their goals lead to one outcome — success. That’s why all our tasks are geared towards bringing value to our customers. To do this, it is critical to correctly define the requirements of each individual client.
We start by defining the market and the niche where the client is going to promote its product. We carefully define the target audience of the product and the possibilities to further expand this audience. We then add new parameters to the user image. Also, we carefully study the client's competitors, evaluate their strategies, try to identify where they make mistakes and why. Only after this research, we proceed to finding out what exactly the client wants.
The client's wishes and needs can be strikingly different. But as we said above, we take a customer-centric approach. Therefore, we are not afraid to tell the client that their desires do not coincide with their needs, and we prove this by providing facts and data. Our task is not to satisfy the client's random request, but to bring value. By analyzing the requests of the clients together with them, we determine the steps that need to be taken to meet these requests.

There is nothing special about the development stage and it is similar to a development project in any other industry. Taking into account the client’s budget, we define the project objectives and prioritize the features that need to be developed.
In one of our latest cases, the client wanted a full-fledged crypto exchange. This is where they planned to invest their money from the start. The exchange was supposed to have standard functionality of crypto exchanges like the ability to get wallets, make transactions, and so on. During development, special attention was paid to the issue of security. The client wanted us to implement the Know Your Customer policy and 2-factor authentication for the platform’s users. Wallet security also had to be at the highest level since the client wanted to distribute their product under license in the future.
After defining all the features, we decided what technologies we need. In this case, we used Python 3.6 for the back-end, ReactJS for the front-end, as well as, frameworks. We managed the databases using Postgresql, and all cloud solutions were developed via Hetzner and AWS.
Only we started developing the platform.

At Twinslash, we understand that blockchain testing requires more attention since blockchain code objects are immutable. In view of this, we test smart contracts from both Solidity and JavaScript perspectives.
Running tests on Solidity help us launch the blockchain and call smart contracts and their functions. We use JS tests to a greater extent to make sure that contracts behave correctly on the surface. All this is done in order to know for sure that our decentralized application is working as intended at the moment of calling smart contracts. We use Web3js for this testing.

We are well aware that the work on a product doesn't end at the time of its release. Further product maintenance is often 50% of the total project work. Blockchain products require a more thorough approach in this regard since a product such as a cryptocurrency exchange should work smoothly 24/7 and without errors. Due to the fact that users are extremely impatient of where their money runs, malfunctioning of cryptocurrency exchanges will cause serious damage to the company's reputation.