Sergiy Savostin

Sergiy Savostin

Principal-level Full Stack Engineer
London, UK.

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

Total Performance Data
|

Software and Web Apps Director

London, London, United Kingdom

Highlights

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.

WellDone Creative Software
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Full-stack Developer

London, United Kingdom

Highlights

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).

Team Creation
|

Senior Full-stack Developer

Highlights

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.

Kits Telecom ISP
|

Head of Internet Services

Summary

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.

Market ISP
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Head of Web Development

Summary

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

Marka ISP
|

Senior Full Stack Developer

Summary

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

Zaporizlzhian National Technical University

Bachelor degree

Electronics design engineer

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.

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