As a Senior Lead Developer at Prerender.io, I have been responsible for coordinating a team of developers and providing daily updates to the Product Manager and Product Owner. During my time at Prerender.io, I have been able to streamline our L2 and L3 support resolution times through improved coordination and communication among team members.

Prerender currently serves 2.7 billion web pages to crawlers. It has over 350 Tb of data from crawled sites, so scalability and high availability are a must. With that in my mind, I had to implement features carefully.

Additionally, I have spearheaded several initiatives to improve our product, including implementing quality-of-life improvements and new features, consolidating multiple repositories into one monostack, and enhancing our local development environment with Docker. Through these efforts, we have been able to significantly improve our overall performance.

One of my major accomplishments during my time at Prerender.io has been successful refactoring of some parts of our core product, which has resulted in significant performance improvements. Overall, my work at Prerender.io has been focused on driving innovation and excellence.

At Inspyre Informatics, I started as a senior backend developer before being promoted to senior lead developer. As an outsourcing company, I had the opportunity to work on a variety of projects, each with their unique challenges and opportunities.

One of the most notable projects I worked on was Mindspa, a mental health app that has over 1 million downloads and has received a 5-star rating on the app store and a 4.6 rating on Google Play. I developed and implemented multilingualism for the app, which resulted in a significant increase in active users, with over 100k monthly subscribers and a 30% increase in users joining after adding the multilingual feature.

I also worked on BlockBen, a fintech company trading with gold/crypto, where I was initially brought in to maintain the product until a new major version change. Due to some technical difficulties, I ended up creating new features, including a crypto-based investment product and two cryptocurrencies, both of which were written in Solidity and deployed on Ethereum and could be found on several exchanges.

At Benker.io, a European blockchain-based financial institution, I designed their hybrid blockchain and implemented the core features of the system on top of AWS. The system uses microservices, 2 phase commit transactions, message queues, and a unique ZK proof algorithm to verify every transaction. As a finance project, scalability and high availability are key features.

Finally, at Skypark, a social parking-lot share application, I designed the backend architecture, which involved live position tracking, a parking-lot database, achievements, and a reward system. The project is highly scalable, based on the active user count. The whole application backend runs on AWS (Fargate, Aurora, S3, SQS etc.)

Overall, my work at Inspyre Informatics allowed me to gain experience in a variety of projects and technologies, and I am proud to have played a key role in the successful implementation of these products.

As a senior backend developer at BitNinja, I was responsible for creating their brand new highly scalable public API, which can handle multiple billion requests every year. My work on the new API helped improve the overall user experience and effectiveness of the product.

I designed and implemented the entire API and refactored some microservices under the hood to optimize the system. The system is built on top of Kubernetes and AWS. The new API greatly improved customer engagement, with users becoming more active and starting to change settings more frequently. As a result, BitNinja caught more malware and detected more hacking attempts.

I am proud to have played a key role in improving the security and protection of BitNinja users through my work on the new public API, and to have contributed to the success of the company's mission to provide the best server security software on the market.