Sergey Morkovkin

Sergey Morkovkin

Mentor
5.0
(7 reviews)
US$25.00
For every 15 mins
13
Sessions/Jobs
ABOUT ME
IT Consultant / Solution Architect / Team Lead / Full-Stack Engineer / Technical Recruiter
IT Consultant / Solution Architect / Team Lead / Full-Stack Engineer / Technical Recruiter

I am Sergey, a Web IT professional working in the industry for the last 20 years. I help companies and startups reduce development costs and make their products stand out. My experience combines both business and technical roles. This allows me to see things from multiple perspectives and create exceptional quality at all levels of the project. I'm excited to contribute in your business through my knowledge and skills.

Russian, English
Kyiv (+02:00)
Joined March 2017
EXPERTISE
10 years experience | 5 endorsements
Using JavaScript from the very beginning of my IT career. Proficient in both server-side and client-side environments. Perfectly know spe...
Using JavaScript from the very beginning of my IT career. Proficient in both server-side and client-side environments. Perfectly know specifics of the native vanilla JavaScript as well as multiple flavours such as ES5, ES6 and TS.
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19 years experience | 1 endorsement
Using HTML and CSS from the very beginning of my IT career. Good at creating a cross-browser accessible and responsive markup. Know speci...
Using HTML and CSS from the very beginning of my IT career. Good at creating a cross-browser accessible and responsive markup. Know specifics of the major HTML5 components such as canvas, history, audio, video, storage, geolocation, web-sockets and others.
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5 years experience | 2 endorsements
9 years experience
8 years experience
6 years experience

REVIEWS FROM CLIENTS

5.0
(7 reviews)
Harry
Harry
September 2019
Best mentor and appreciate his skills
Vernon Neilly II
Vernon Neilly II
August 2019
Highly recommend Sergey. A very seasoned developer and mentor and it shows in his meticulous process and end results. Would work again with Sergey anytime.
Joseph Kalish
Joseph Kalish
August 2019
Very Nice Guy! Patient, knowledgable, easy-going, fixed my problem under budget and fast. Would use again.
Vernon Neilly II
Vernon Neilly II
August 2019
Sergey did a great job of handling guiding me through my blockers on this task and even provided a followup of items for me to focus on. Thanks. Will work with Sergey again!
James Home
James Home
May 2019
Sergey is very through, fair and honest but also very knowledgable about his craft. I could see his years of experience reflected in how he approached problems and explained the resolution. His English is very easily understood - I had no problem understanding what he said. Great mentor.
Removed User
Removed User
July 2018
Really enjoyed my session with Sergey, I have a project that I am working on and got stuck, Sergey helped me with specific questions about my project and also gave me useful tips and tricks. I will continue my sessions and highly recommend him to all aspiring developers!
Removed User
Removed User
June 2018
Sergey was very patient and helpful. Will definitely use him again if I run into trouble.
David Butler
David Butler
May 2018
efficient help, straight to the point.
SOCIAL PRESENCE
GitHub
sergeymorkovkin.github.io
Personal portfolio website and research blog:
HTML
0
0
Stack Overflow
1 Reputation
0
0
0
EMPLOYMENTS
Technical Solutions Architect
Baazi Games
2020-01-01-2021-08-01
➤ Came into the New Delhi to meet customer and his team, 2-month trip; ➤ Performed comparative technical analysis of all potential techno...
➤ Came into the New Delhi to meet customer and his team, 2-month trip; ➤ Performed comparative technical analysis of all potential technologies; ➤ Organized and managed company internal recruitment process; ➤ Organized and managed company app development process; ➤ Performed company internal team coaching and skill sharing; ➤ Performed product quality assurance and technical decision making; ➤ Delivered a renewed mobile poker app driving main company profit; ➤ Delivered a renewed desktop poker app driving main company profit;
React Native
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React Native
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System Architect and Lead Engineer
Quickblox
2018-02-01-2018-03-01
QuickBlox is a platform of choice for healthcare businesses worldwide, from large corporates storing millions of records of US health ins...
QuickBlox is a platform of choice for healthcare businesses worldwide, from large corporates storing millions of records of US health insurance customers to small startups introducing innovative mHealth technologies. Responsibilities: - Performed careful analysis of customer requirements. - Made a research on the most suitable 3rd party solutions. - Prepared project development plan with detailed estimates. - Developed a performant REST API authorization solution. - Prepared all AWS integration scripts and guidelines.
Node.js
MongoDB
OAuth 2.0
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Node.js
MongoDB
OAuth 2.0
Docker
Ory hydra
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System Architect and Team Leader
Profusa
2017-08-01-2017-12-01
Profusa is a company, creating tissue-integrating biosensors for continuous monitoring of body chemistries. Some of the beneficiaries of ...
Profusa is a company, creating tissue-integrating biosensors for continuous monitoring of body chemistries. Some of the beneficiaries of Profusa include athletes, soldiers, and diabetics. Responsibilities: - Coordinated work across a team of 3 developers. - Performed deep analysis of the project and situation. - Determined all causes of a poor system performance. - Developed a consequential project enhancement plan. - Created a working POC as a proof of all my concepts. - Completely reworked data structured and data flow. - Algorithmically reduced system response time 50-fold. - Algorithmically reduced resource consumption 5-fold.
HTML/CSS
Node.js
MongoDB
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HTML/CSS
Node.js
MongoDB
CSS3
Highcharts
JavaScript
Angular 2
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PROJECTS
Profusa Analytical DashboardView Project
2017
Profusa is a company, creating tissue-integrating biosensors for continuous contactless monitoring of blood chemistries. Some of the be...
Profusa is a company, creating tissue-integrating biosensors for continuous contactless monitoring of blood chemistries. Some of the beneficiaries of Profusa include athletes, soldiers, and diabetics. Medical institutions are also using Profusa sensors for live monitoring the oxygen and sugar levels. In order to fine-tune sensors during development, Profusa needed a system for real-time data collection, analysis, and consolidation. Their legacy system was not adequate to handle the task, so my team and I took charge of their legacy system modernization. I was a Manager and a Team Lead for this project. Having started with only 3 people on the team, I was able to made thorough analysis of all issues that affected system performance and stability. The challenge was to collect data from multiple sources like Bluetooth sensors, USB Sensors, and CSV-files. Since every source had it’s own data structure, the first thing we had to implement was a data consolidation algorithm. As a result, no matter the input source, all of the data had been converted to a single internal format. This significantly reduced code duplication and improved maintainability. Performance and stability of chart rendering was another issue we had addressed. On large data sets, the chart was freezing, while on medium data sets, it would take a number of minutes for the chart to display. Benchmark clearly showed the problem existed on multiple levels. We had replaced the charting component, enabled the network traffic compression, and completely reworked the data pre-processing algorithms. This increased chart display speed by 40 times and resolved all known stability issues.
Angular
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Angular
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