We started by extending our client’s team with one software engineer. The company was satisfied with our work and asked us to expand the team. We added one developer to the team every month, on average. Around eight months since the launch of our collaboration, the team reached its final shape of eight software developers working full-time on the project.

Technology

Our development team was in charge of the entire development process and built the platform from scratch.

The entire application (front-end, back-end, and infrastructure) is written in NodeJS. Our front-end stack includes our favorite technologies: React, Redux, and Material UI. Its back-end is based on the model of services run on the ECS cluster (Amazon Web Services).

For the database, we used PostgreSQL. It was one of the most significant upgrades to the solution following the production stage (originally, the project utilized Redis).

While rolling substantial upgrades to production, our team also switched to version 2 of protocol 0x and introduced DSProxy as the «actor» performing transactions. DSProxy is a smart contract that enables the owner to inject arbitrary code into its context, which is very convenient when carrying out complex operations inside an Ethereum transaction (for example, performing several batched operations).

Following the production stage, we changed the entire transaction settlement model and introduced a mechanism called Atomic Price Adjustment. This mechanism makes it possible to match orders located at different price points fairly. The excess funds are then returned to the taker atomically in the same Ethereum transaction.

Results

• Timely development of the MVP
• Continual improvement of the solution’s performance and stability
• Successful ongoing cooperation with our dedicated team