S.Leschev System Architect

Google Engineering Level: L7+

🏆 Awards

Ranking #Dev: Global TOP 200 (Certificate)

System Design

Design large-scale systems / 2022 / Amazon, Dropbox, Instagram, Facebook, Netflix, Pinterest, Twitter, Uber, Youtube architectures / S.Leschev.

Licenses & certifications

• 🏆 LeetCode Global TOP 200 (Swift: Certificate, Sources: Swift).
• 🏆 Golden Award for the Year of the Tiger Challenge (TypeScript: Certificate, Sources: Codility).
• 🏆 Golden Award Muad'Dib's Challenge (Swift: Certificate, Sources: Swift).
• 2022 Oct LeetCode Challenge (2022-10-31).
• 2022 Sep LeetCode Challenge (2022-09-30).
• 2022 Aug LeetCode Challenge (2022-08-31).
• 2022 July LeetCode Challenge (2022-07-31).
• 2022 June LeetCode Challenge (2022-06-30).
• 2022 May LeetCode Challenge (2022-05-31).
• 2022 Apr LeetCode Challenge (2022-04-30).
• LeetCode Dynamic Programming (2022-05-07).
• Graph Theory (2022-04-30).
• SQL (2022-04-26).
• Algorithm I (2022-04-30), Algorithm II (2022-05-21).
• Data Structure I (2022-04-30), Data Structure II (2022-05-21).
• Binary Search I (2022-04-28), Binary Search II (2022-05-18).
• Programming Skills I (2022-04-28), Programming Skills II (2022-05-18).
• LinkedIn Skill Asessment (Mobile): Swift (Programming Language), Object-Oriented Programming (OOP), Objective-C, C++, Ionic, JSON, XML, Android, Kotlin, Maven, Java, REST APIs.
• LinkedIn Skill Asessment (Front-End): Front-end Development, Angular, React, Javascript, HTML, CSS, jQuery.
• LinkedIn Skill Asessment (Back-End): Node.js, Java, Spring Framework, Scala, C#, .NET Framework, Unity, Python (Programming Language), Django, PHP, C (Programming Language).
• LinkedIn Skill Asessment (Databases): MongoDB, NoSQL, Transact-SQL (T-SQL), MySQL.
• LinkedIn Skill Asessment (Infra/DevOps): Bash, Git, Amazon Web Services (AWS), AWS Lambda, Google Cloud Platform (GCP), Microsoft Azure, Hadoop, IT Operations.

Contacts

I have a clear focus on time-to-market and don't prioritize technical debt. And I took part in the Pre-Sale/RFX activity as a System Architect, assessment efforts for Mobile (iOS-Swift, Android-Kotlin), Frontend (React-TypeScript) and Backend (NodeJS-.NET-PHP-Kafka-SQL-NoSQL). And I also formed the work of Pre-Sale as a CTO from Opportunity to Proposal via knowledge transfer to Successful Delivery.

🛩️ #startups #management #cto #swift #typescript #database

📧 Email: sergey.leschev@gmail.com

👋 LinkedIn: https://linkedin.com/in/sergeyleschev

👋 Twitter: https://twitter.com/sergeyleschev

👋 Github: https://github.com/sergeyleschev

🌎 Website: https://sergeyleschev.github.io

🌎 DEV Community: https://dev.to/sergeyleschev

🌎 Reddit: https://reddit.com/user/sergeyleschev

🌎 Quora: https://quora.com/sergey-leschev

🌎 Medium: https://medium.com/@sergeyleschev

🖨️ PDF: Download

ALT: SIARHEI LIASHCHOU