Serguei Nevarko, Developer in Dollard-Des Ormeaux, QC, Canada
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Serguei Nevarko

Verified Expert  in Engineering

Software Developer

Location
Dollard-Des Ormeaux, QC, Canada
Toptal Member Since
May 10, 2022

Serguei specializes in code architecture, React efficiency, and back-end flexibility. The more complex and interactive the app, the more he will shine. He has built many web applications from the ground up while working as a freelancer and communicates well with clients. By being used to constantly learning new things, Serguei will always be able to adapt to any requirements or propose new and better ways to structure the application.

Portfolio

Checkflo
PHP, MySQL, JavaScript, HTML, CSS, APIs, HTML5, Full-stack, API Integration...
Crockpot Enterprises LLC
Full-stack Development, JavaScript, HTML, CSS, Algorithms, Node.js...
Toronto Boutique Apartments
Node.js, React, Google Maps API, REST APIs, Stripe API, Styled-components, CSS...

Experience

Availability

Part-time

Preferred Environment

Node.js, React, MongoDB, MySQL, JavaScript

The most amazing...

...tech startup I've co-founded is an automated solution that engages with high-value prospects on LinkedIn: multi-modules from scraping, scanning, and queuing.

Work Experience

Software Developer

2012 - PRESENT
Checkflo
  • Developed the software that allows clients to log in with QuickBooks and import their check information into our software. The next business day, they are generated, printed with the appropriate shipping labels, and sent out by the company.
  • Developed RESTful APIs for our clients so that they can upload batches of checks to print out.
  • Integrated processing modules using various APIs like Versapay, Endicia and USPS, Trulioo, and Duo.
Technologies: PHP, MySQL, JavaScript, HTML, CSS, APIs, HTML5, Full-stack, API Integration, Architecture, Database Modeling, REST APIs, Technical Architecture, Front-end Development, ECMAScript (ES6), REST, CSS3, Vanilla JS, Back-end Architecture, User Experience (UX), User Interface (UI), SQL, Software Architecture, Full-stack Development, Web App Development, Reports, Dashboards, Twilio, Payment APIs, Responsive Web Apps, Postman

Full-stack Developer

2023 - 2023
Crockpot Enterprises LLC
  • Built a responsive web application from scratch for a lottery number generator in React and Node.js and deployed everything online.
  • Made a custom calibration section on the website so clients get results uniquely calibrated to their printers at home.
  • Made an admin page to control website features and create guest accounts.
Technologies: Full-stack Development, JavaScript, HTML, CSS, Algorithms, Node.js, Tailwind CSS, Styled-components, React, Heroku, MongoDB, Express.js, PayPal, Mobile First, Web App Development, MERN Stack, Payment APIs, Responsive Web Apps

Full-stack Developer

2023 - 2023
Toronto Boutique Apartments
  • Used the Guesty API to fetch all relevant data about properties and remade their entire front-end website from scratch.
  • Integrated Stripe to process payments on a very specific payment schedule.
  • Created several reusable and efficient components in React to facilitate project development.
  • Integrated Postmark API to be able to send emails to customers.
  • Did weekly deployments online and calls with the client for a smooth development cycle.
Technologies: Node.js, React, Google Maps API, REST APIs, Stripe API, Styled-components, CSS, UI Components, Web UX Design, Front-end Development, ECMAScript (ES6), REST, Responsive Web Design (RWD), CSS3, Stripe, Back-end Architecture, Minimum Viable Product (MVP), User Experience (UX), User Interface (UI), Software Architecture, Full-stack Development, Mobile First, Web App Development, MERN Stack, Socket.IO, Twilio, Payment APIs, Responsive Web Apps, Postman

Senior Full-stack Developer

2022 - 2022
Whistlaw
  • Developed a whistleblower system to help European companies conform to the new EU regulations.
  • Wore multiple hats to develop the software to allow whistleblowers to submit fraudulent/illegal activities anonymously, having organization handlers to manage these cases and admins to track the overall progress with charts.
  • Built custom charts, modern-looking dashboards, filterable tables, notification system, and PDF generation.
  • Created an advanced subscription module with different prices using Stripe API.
  • Implemented different APIs: Dropbox, Stripe, and Postmark.
  • Recreated Figma designs in React that the client provided.
Technologies: Node.js, React, Charts, Back-end, CSS, APIs, Full-stack, API Integration, Architecture, Database Modeling, REST APIs, Stripe API, Startups, Technical Architecture, Leadership, Front-end Development, ECMAScript (ES6), REST, CSS3, Stripe, Back-end Architecture, Minimum Viable Product (MVP), User Experience (UX), User Interface (UI), Software Architecture, Full-stack Development, Web App Development, MERN Stack, Reports, Dashboards, Payment APIs

Front-end Developer

2022 - 2022
Bassam Abdellatif
  • Developed an app that manages real-estate rentals between property managers, landlords, and tenants.
  • Created a multi-login with different accounts and dashboards. Each account type has its own set of pages and permissions.
  • Set up several APIs (Google Maps, Stripe, file management, etc.) to fit project requirements.
Technologies: HTML, JavaScript, CSS, Front-end, APIs, React, Node.js, Google Maps, Dropbox API, Live Chat, Cloud Storage, Redux, API Integration, Architecture, Database Modeling, REST APIs, Stripe API, Startups, Technical Architecture, Leadership, Front-end Development, ECMAScript (ES6), REST, CSS3, Stripe, Back-end Architecture, Minimum Viable Product (MVP), User Experience (UX), User Interface (UI), Software Architecture, Full-stack Development, Web App Development, MERN Stack, Socket.IO, Payment APIs

Software Developer

2013 - 2019
9277-0759 Quebec Inc.
  • Developed a desktop application using Windows Forms. Since there were many screens, each one was built as a .dll file and dynamically imported into a custom tab control to have multiple windows at once.
  • Created various custom controls for the user interface.
  • Developed a customized mailing module using the SMTPS protocol. The one provided by default did not have the option for a bounce address, so it had to be implemented manually.
Technologies: C#, Windows Forms (WinForms), Front-end, Back-end, Web Development, Technical Architecture, Responsive Web Design (RWD), User Experience (UX), .NET

Systematic Organic Results (SOR)

https://sor-seo.com/
A B2B service for filtering out a vast amount of people on LinkedIn to extract high-value prospects. We then systematically connect and organically engage with them to book calls and meetings for our clients.

Since other businesses are in the market about 5% of the time, after our campaign ends, the client is left with a powerful network of people they can follow up with in the future, either by message or phone call.

Code Farm Online | Programming Course

https://codefarmonline.com
This is a new project, and only the MVP was launched. It is an online programming course that is very interactive and flexible. It can branch out based on answers to better help the students, and there are mini-games to solve using code at the end of lessons.
2013 - 2017

Bachelor's Degree in Computer Science

McGill University - Montreal, QC, Canada

Libraries/APIs

Node.js, React, REST APIs, Stripe, Stripe API, Socket.IO, Puppeteer, Windows Forms (WinForms), Google Maps, Dropbox API, Google Maps API

Tools

MongoDB Atlas, Figma, GitHub, Postman

Frameworks

Express.js, Redux, Vanilla JS, Next.js, Tailwind CSS, .NET, React Native

Paradigms

REST, Back-end Architecture, Design Patterns, Responsive Web Design (RWD), Web UX Design

Languages

JavaScript, PHP, HTML, CSS, HTML5, ECMAScript (ES6), SCSS, TypeScript, CSS3, SQL, C#, Python

Platforms

Heroku, Azure, Amazon Web Services (AWS), Dokku, Docker, Twilio

Storage

MongoDB, MySQL, Database Modeling, Databases

Other

APIs, Full-stack, Front-end, Back-end, Web Development, API Integration, Architecture, Technical Architecture, Front-end Development, Minimum Viable Product (MVP), User Experience (UX), Software Architecture, Full-stack Development, Web App Development, MERN Stack, Startups, Leadership, Mobile First, Payment APIs, Responsive Web Apps, Algorithms, Writing & Editing, UI Animation, Web Animation, Live Chat, Cloud Storage, Charts, Styled-components, UI Components, User Interface (UI), Web Scraping, PayPal, Reports, Dashboards

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