Oleksandr Poshtaruk

Oleksandr Poshtaruk

Mentor
5.0
(171 reviews)
US$16.00
For every 15 mins
383
Sessions/Jobs
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First 15 mins free for your first session
ABOUT ME
Front-End Developer
Front-End Developer

I used to be a network and RH-linux administrator for 14 years, but decided to change my career path to development by heart call. And JS - this is it for me. So I am doing Front-End development about 7+ years, and 6+ of them - in commercial projects on Angular framework. Have a strong knowledge of JS Core and Angular framework. Also, I am "Hands-on RxJS" and "RxJS unit testing in Angular" video-courses author on Udemy and a writer for Angular-in-Depth blog (indepth.dev). Good in problem-solving skill.

"The strength of JavaScript is that you can do anything. The weakness is that you will." - Reg Braithwaite

Russian, Ukrainian, English
Kyiv (+02:00)
Joined December 2017
EXPERTISE
7 years experience | 32 endorsements
Have about 4,5 years of JS experience on commercial projects in EPAM and Tonic companies. Javascript Expert by pluralsight.com ID rate. L...
Have about 4,5 years of JS experience on commercial projects in EPAM and Tonic companies. Javascript Expert by pluralsight.com ID rate. Last 3 years I've been working with Angular 2/4 and Typescript, Reactive programming (RxJS), about 2.5 years - Highcharts.js visualizatoin. Capable to explain Vanilla JS Core things (prototypes, inheritance, Classes, Dependency Injections, SOLID, closures) and Angular 2-4 staff very well.
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5 years experience | 12 endorsements
4 years of Angular (with ngRxStore) + Rx.JS projects. Author of video course "Hands-On RxJS for Web Development": https://www.packtpub.co...
4 years of Angular (with ngRxStore) + Rx.JS projects. Author of video course "Hands-On RxJS for Web Development": https://www.packtpub.com/web-development/hands-rxjs-web-development-video
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6 years experience | 16 endorsements
5 years experience | 8 endorsements
7 years experience | 13 endorsements
5 years experience
1 year experience

REVIEWS FROM CLIENTS

5.0
(171 reviews)
Sean Gravener
Sean Gravener
February 2023
Excellent mentor. I had been stuck with RxJS and Oleksandr walked me through it. He was focused, effective and explained each issue and provided a tidy solution as we went along. Also very professional and courteous. Great experience, thanks again.
Emmanuel CHaudron
Emmanuel CHaudron
February 2023
Oleksandr has been really helpful and efficient in helping me find the bug I was chasing for >1 hour, as we were done in just <15 minutes. I would surely work with him again.
Pavan K
Pavan K
January 2023
Oleksandr has been very helpful in making me understand where the issue was and explained every bit in detail until it was completely clear. He was able to quickly understand what the issue was and was quickly able to diagnose it and came up with a solution. Instead of just coming up with a solution, he made sure that the solution is optimised and works efficiently. Apart from the issue I requested, he also suggested a few other things like identifying memory leaks and suggested fixes for them too. Highly recommend Oleksandr.
Manish Kumar
Manish Kumar
November 2022
Awesome guy! very nice in talking and knowledgeable person in his field. Learning under his guidance is very easy to understandable.
Tony Elam
Tony Elam
June 2021
Alex is helping me learn angular 8. tech concepts covered angular, ngrx(redux), angular cli.
Alex Radnaev
Alex Radnaev
April 2021
Alexander provides good explanations and answers virtually all the questions.
Aly
Aly
May 2020
can't say enough good things about Alexander. He is awesome!
Igor Paevshik
Igor Paevshik
March 2020
Alexander have a good approach a lot of knowledge to share and help!
Ban Travis
Ban Travis
March 2020
Very helpful mentor!!
Ban Travis
Ban Travis
February 2020
Great mentor
EMPLOYMENTS
Angular engineer
push-based.io
2022-11-01-Present

- Angular apps/libs Performance audit / upgrades
- Leaks investigations
- RxAngular

Tools:
- Chrome dev tools<br/...

- Angular apps/libs Performance audit / upgrades
- Leaks investigations
- RxAngular

Tools:
- Chrome dev tools
- chrome://tracing
- Edge DevTools Detached elements
- Facebook memLab
- GitHub actions

Angular
GitHub
TypeScript
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Angular
GitHub
TypeScript
Performance Testing
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Senior Frontend engineer
Star
2022-08-01-2022-10-01

- Angular 8-14
- Angular Material
- Typescript

Personal development: AWS practitioner, Terraform basics
- RxJS<br...

- Angular 8-14
- Angular Material
- Typescript

Personal development: AWS practitioner, Terraform basics
- RxJS
- Refactoring
- Web-widgets development
- codebase packages versions upgrade

Git
Angular
TypeScript
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Git
Angular
TypeScript
RxJS
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Front-end developer
Knowde.com
2020-08-01-2022-06-01

-Angular/RxJS/AngularMaterial feature development

- jasmine/jest unit testins

-Angular/RxJS/AngularMaterial feature development

- jasmine/jest unit testins

Angular
Bootstrap
Kendo UI
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Angular
Bootstrap
Kendo UI
RxJS
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