Sergiy Savostin - Principal-level Full Stack Engineer

About

Principal-level Full Stack Engineer with 20+ years of experience delivering scalable, cloud-native platforms and leading engineering teams. Proven track record in AWS architecture, TypeScript/Node.js/ React ecosystems, and microservices design. Adept at driving greenfield product development, mentoring developers, and aligning technology with business outcomes in fast-paced environments.

Work Experience

Software and Web Apps Director

Total Performance Data

Aug 2023 - Present

London, London, United Kingdom

Spearheading architectural transition to AWS, introducing scalable microservices and event- driven patterns.
Led modernization of legacy systems by implementing JSON and WebSocket APIs for real-time data processing.
Designed and delivered new services including real-time tracking software and analytical tools for racing telemetry.
Delivered end-to-end automation of post-race infographics pipeline across backend, rendering, and on-site display.

Full-stack Developer

WellDone Creative Software

Jan 2010 - Present

London, United Kingdom

Developing and managing corporate websites and web applications (PHP, MySQL, HTML, JavaScript, CSS, D3.js).
Developing a Windows VPS hosting service, including a billing system and a management console (Proxmox, KVM, Powershell, PHP).
Designing and managing a 1Tb+ statistical data service (MySQL, Clickhouse, PHP, D3.js, Node.js, API).
Developing native libraries for the company's software products (C/C++, SQLite, OpenSSL).
Developing desktop betting software (Qt/C++, OpenSSL)
Integration of the company's products and apps with third-party services, platforms, and APIs: Stipe, PayPal, SMS gateway, mass mail; ticket system; CRM, MODx, SMF, Cloudflare, several APIs (JSON, XML/SOAP, REST).

Senior Full-stack Developer

Team Creation

Apr 2023 - Aug 2023

Decomposed monolithic Laravel application into microservices with Docker and CI/CD pipelines across dev, QA, and production.
Authored comprehensive API documentation and test suites to improve developer onboarding and reduce regressions.

Head of Internet Services

Kits Telecom ISP

Jan 2007 - Jan 2009

Supervised a team of systems engineers and network administrators in the rolling out of a new cable Internet service provider. The company was later acquired by a national ISP.

Head of Web Development

Market ISP

Jan 2004 - Jan 2007

Managed a team of web developers and designers working on commercial websites.

Senior Full Stack Developer

Marka ISP

Jan 1999 - Jan 2003

Started as a junior Full Stack developer and was promoted to the senior position. Building business presentation websites, online stores, e-commerce websites, chats.

Education

Electronics design engineer

Zaporizlzhian National Technical University

Jan 1991 - Jan 1996

Projects

Share Graphs for BetFair (internal back-office for Flutter Entertainment)

BetFair historical data plugin backend and libs

Developing projects architecture, number of *nix servers installations and full administration (Nginx, MySQL, Bash, PHP, Perl, Powershell, Javascript)

BetFair historical data analysis tool

MarketLocator - Betting desktop (MacOS, Windows) software

BetFair Gameday Pie

BetFair graphs aggregator

Windows VPS hosting

Languages

English , Russian , Ukrainian

Skills

Programming Languages

TypeScript
JavaScript
Node.js
C/C++
Go
SQL
Bash

Frameworks and web components

React
Bun
jQuery
D3.js
Axios
Charts.js
Highcharts.js
Wordpress

Databases

MySQL / MariaDB
SQLite
Clickhouse

Operating Systems

Linux
Windows
MacOS

Architectures

Microservices
Event-driven
Client-Server
Serverless

Cloud, virtualisation and monitoring

AWS
Proxmox
Virtualbox
Docker
Prometheus
Grafana

APIs

REST
SOAP
OpenAPI
JSON
Websockets

Tools

Jenkins
Jira
Git
Bitbucket

Product, architecture and database ownership

Graphics Editors

Adobe Photoshop
Adobe Illustrator
Sketch

Interests

Hobbies & Interests

Hiking
cycling
traveling
volleyball
dioramas and miniatures modelling
writing music
books publishing