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Sergii – Angular, Node.js, JavaScript, experts in Lemon.io

Sergii

From Ukraine (GMT+3)

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Full-stack Web DeveloperSenior
Tech lead
CTO
Engineering Manager
Hire developer
16 years of commercial experience
Asset management
Aviation
Banking
Blockchain
Business intelligence
Cryptocurrency
Fintech
Logistics
Transportation
Trade
Communication tools
Enterprise software
Mobile apps
Platforms
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Sergii – Angular, Node.js, JavaScript

Sergii is a skilled engineer and team lead with over 15 years of hands-on experience in front-end and back-end software development, primarily in the financial sector. He has also worked in the gambling, telecommunications, and aviation industries. Sergii has experience building systems from scratch and has worked with major parcel delivery services in the US. With a readiness for new challenges, Sergii will be a perfect addition to your team.

Main technologies
Angular
8 years
Node.js
6 years
JavaScript
10 years
Typescript
8 years
Additional skills
React Native
Firebase
MongoDB
GCP
MySQL
Highcharts
Cloud Architecture
Microsoft Azure
OpenAPI
Product management
GraphQL
Apollo GraphQL
Blockchain
Jenkins
Database design
PHP
React
Ready to start
To be verified
Direct hire
Potentially possible

Experience Highlights

Principal Technologist
May 2020 - Nov 20233 years 5 months
Project Overview

A modular technology and experience platform is application toolkits and integration layers that allow providing private banking platform with great UX and rollout for new private office or bank just in a few weeks. Functionality includes wealth management and crypto investments. It is an MXDP set of applications, hosted on Azure - Java microservices backend, Flutter modular mobile app, and Angular web microfrontend applications based on a cutting-edge module federation approach.

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Responsibilities:

Participated in building full platform high- and low-level architecture made core technology decisions, organized a perfect CI/CD process, that includes code quality checks, code coverage, reporting and logging tools, monitoring, and security compliance of all levels of the platform. Prepared estimates for implementation, organized team structure, hired proper level developers and QA, coordinated communication between teams and squads, covered full product flow from an idea to production release.

Project Tech stack:
Angular
Typescript
Webpack
AG-Grid
Highcharts
Angular Material
Cloud Architecture
Product management
Database design
OpenAPI
Apollo GraphQL
GraphQL
Crypto
Blockchain
Microsoft Azure
Jenkins
Lead Full Stack Developer.
Aug 2019 - May 20209 months
Project Overview

A platform that allows transactions in the private securities market to be conducted digitally while meeting the current regulatory record-keeping requirements. Underpinning the business is an enterprise-private permissioned blockchain platform (distributed ledger). It creates a unique opportunity to implement a new capital raising and trading infrastructure that provides a trusted, secure source of information at a materially lower cost to use while being compliant with very strict regulatory requirements.

Skeleton
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Responsibilities:

Set up the processes and multifunctional full-stack team collaboration, developing of new features on both Angular front-end and NodeJS backend with MongoDB, refactored existing functionality, participated in CI/CD setup, hands-on development.

Project Tech stack:
Angular
Typescript
Node.js
MongoDB
Technical Lead
Sep 2018 - Sep 20191 year
Project Overview

Complex solutions for the end-users and management of the largest parcel delivery company in the United Kingdom. One of them was a smartphone application built with React Native, Firebase, and NodeJS backend hosted on Google Cloud Platform and using all available Firebase functionality (including GC Functions, Firestore Database, etc.)The app reached 1 mln. active users in a few weeks and was highly rated on Google Play and AppStore.

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Responsibilities:

Led the scrum team of full-stack developers, MQA, and AQA engineers, coordinated the work and hands-on development.

Project Tech stack:
JavaScript
React
React Native
Firabase
GCP
Node.js
Lead JavaScript Developer
Jul 2014 - Jul 20184 years
Project Overview

These were both projects from scratch, one of the most massive and exciting projects in the company's portfolio. The team used a wide array of technologies: we were hacking and creating infrastructure mainly on AngularJS / Angular 2, Node.js for CLI tools and backend services, bower for dependency management, plus a few build tools of choice for various sub-products, based on the project's needs. During this project, our team faced many challenges, we analyzed existing functionality and transformed & adapted it into something great using the latest stack of Web technologies.

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Responsibilities:

Focused on developing the section of Unified Back Office dedicated to a payment system, MoneyMatrix (payment system) itself and software development kit to integrate payments to customer's software.

Project Tech stack:
Angular JS
Angular
Node.js
JavaScript
bower
TeamCity
Full stack developer
Jun 2012 - Jul 20142 years 1 month
Project Overview

Web App for pilots of private aircraft that allows building a fully integrated flight planning, filing, dispatch, crew briefings, tracking, and more. It was built on PHP, on the front end we started with an app on AngularJS and TypeScript, when it even wasn't officially released yet (was in beta).

Skeleton
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Responsibilities:

Improved performance 10x times for weather information processing, working on building flight maps with winds and other graphics over the geographical maps, etc.

Project Tech stack:
PHP
Angular JS
Typescript
MySQL

Education

2012
Computer Science
Master's

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