Egor Sorokin Email & Phone Number

In Quantori I work as a backend developer on various life-science projects using mostly Python, FastAPI, and AWS. My tasks here include not only coding but also API and system design, prototyping, infrastructure management, and CI/CD automation. Working with expert teams of developers, QA, BA, and managers, I'm also participating in business requirements gathering, customer communications, and mentoring.I can highlight the following challenging tasks I worked on:- Design and implementation of a tenant-based access isolation system for a LIMS project.- Setup and integration of an external IAM system.- Prototyping and development of the AWS-based lightweight client service for launching complex scientific calculations.- Creation and configuration of a performant test suite for GraphQL API with hundreds of test cases.- Other backend tasks such as API design, pagination, DB queries optimization, deployment, CI/CD setup, etc.- Knowledge sharing - documentation and mentoring.

After some time in C++ mastering, I decided to change my course a little bit and try something new. In Piterbyte I become a part of a small team of professionals with a strong startup spirit. We making a new remote medicine product using cutting-edge technologies and approaches. Our goal is fast feature delivery with full attention to code quality and system reliability.As a Fullstack Developer, I take on the following:- Rapid implementation of the new product features on the backend side (Python, AWS, and PostgreSQL);- GraphQL and REST API design;- Client-side features support (Angular, Typescript);- Prototyping and pros/cons analysis of the different approaches and technologies;- Writing unit, API, and E2E tests;- Maintenance of CI/CD pipelines;- Continuous acceptance testing;- Clarification of the business requirements;- Taking part in code reviews, technical approaches discussions, and new features demos;- Tight integration with colleagues, pair coding, and testing.Some results of my work in Piterbyte:- Investigated and implemented a new patient remote monitoring program type for theproduct.- Developed user session recording system with hot and long-term compressed storagesystems. The team approved that it is a convenient tool for support cases resolving as well, as logs and traces. Investigation time has been dramatically decreased.- Successfully refactored and optimized the acceptance testing suite.

Санкт-Петербург, Россия

I worked on a food tech project Yandex Eats as a C++ Backend Developer. With the best C++ and highload experts, I learned how to build and maintain efficient and robust microservices, which handle thousands of clients per second. As a Catalog Team member, I was responsible for the very first thing that a user sees on signing in to our application - the catalog of restaurants.After some time my senior collegue and I were moved to a separate team to boost the advertising branch of our product. We started improving our order conversion metrics by developing brand-new microservices with tight integration with the ML and analytic teams.My tasks as a developer here were:- Daily delivery of the new features and hotfixes;- Writing clean and efficient C++ code using uServer framework;- A/B testing hand-by-hand with the product managers and analytics;- Code and architecture review;- Distributed microservices API design (with a lot of attention to seamless delivery and backward compatibility);- Endpoints optimization (using caches, async requests, efficient algorithms, etc.);- Writing internal documentation;- Services load testing;- Integration with other teams and products;- Knowledge sharing and junior colleagues mentoring.Some results of my work in Yandex:- Improved restaurants catalog recommendations quality and performance;- Increased customer order conversion metrics and service advertisement revenue;- Prototyped a new game-based customer service;- Successfully integrated rate-limiting tool, made our services more robust and sustainable to the load picks.

Санкт-Петербург, Россия

I started my career path as an Intern C++ Developer at Quest Software. Here I got my first real experience by working hand-by-hand with the best enterprise security experts. My tasks and duties here were:- Implementation of new features;- Maintenance of a complex codebase with high security and performance requirements;- Writing unit tests;- Code debugging and bug fixing in a multithreaded environment;- Desktop UI improvements.In Quest, I learned how to write clean and efficient code, work in a team and test a software product.