Андрей

Andrei Bargan
Kyiv, Ukraine

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Summary

Experienced front-end Angular developer and product leader with expertise in algorithms,
OOP, and functional programming. Started as the first engineer at TOA Technologies
and grew with the company into a development and product lead, contributing to its
acquisition by Oracle. Skilled in applying SOLID principles to build maintainable and
scalable products, with a proven track record of bringing SPA and hybrid mobile apps
from idea to launch, including architecture design, UX and technical specifications, team
coordination, and hands-on development. Possess strong leadership and organizational
skills and a collaborative mindset.

Technology Stack

●​ JavaScript ●​ Git, Gitlab, Github, ●​ MacOS, Linux, FreeBSD
●​ TypeScript CI/CD ●​ RESTful API, GraphQL, Web
●​ Angular 2+ ●​ PHP Sockets
●​ RxJS ●​ LAMP ●​ Webpack, Babel, gulp, npm
●​ NgRx ●​ SQL, MySQL, ●​ Ionic, Cordova, Capacitor
●​ SSR, SSG PostgreSQL ●​ Hybrid Android/iOS mobile
●​ Jest, Jasmine, ●​ System design, applications
Karma, Vitest Agile, Scrum
●​ FCM, Push Notification
●​ CSS, SASS, ●​ AI agents & Flows
SCSS, LESS ●​ VSC, Cursor, ●​ Third-party API integrations:
●​ Angular Material, Claude code, Google Calendar, Google
Angular CDK, GitHub Copilot Maps, FB Graph API, Stripe,
PrimeNG ●​ Nx Monorepo Wayforpay, TurboSMS,
●​ Chart JS, D3.js ●​ GCP, AWS Dextel, Infobus, etc
●​ JQuery ●​ Axure RP
Career Highlights

As a Lead Front-End Developer

●​ Developed web and hybrid mobile applications end to end: assembled the team,
designed architecture, managed development, contributed hands-on, and launched
products to production, generating revenue.
●​ Led a team of developers.
●​ Mentored junior and mid-level developers, helping them grow into higher roles.

As a Product Manager

●​ Negotiated with clients, analyzed business processes, gathered requirements, made
ongoing adjustments, and designed solutions; led the development process of a
complex field workforce management system.
●​ Led a large cross-functional team of BAs, designers, and developers, delivering a
complex platform from concept to deployment.
●​ Helped top management prepare high-impact presentations of the system and future
roadmap, contributing to major investments and the eventual acquisition of the company
by Oracle.

Education

National Aerospace University “Kharkiv Aviation Institute”
Master’s Degree, Computer Science
September 1997 - February 2003

Languages

English: Advanced (C1)
Ukrainian: Intermediate (B2)
Russian: Fluent
Experience

Senior Frontend Developer
Reality Check (Startup) — Platform for social network users and fact-checkers • Kyiv,
Ukraine (remote).
October 2025 - present.
Duration: 5 months.
Team Size: 2
●​ Led development of a Chrome extension enabling users and fact-checkers to attach
debunks to fake news and scam posts across major social networks.
●​ Acted as architect, project manager, and frontend developer in a Scrum team (myself +
backend engineer).
●​ Managed negotiations with fact-checking organizations (IFCN, EFCSN, etc), investors,
and representatives of the European Commission regarding regulatory alignment for
combating online misinformation.
●​ Defined architecture, feature roadmap, delivery processes, and integration flows
between extension and backend services.
Tech stack: TypeScript, Angular 20, Chrome Extensions (Manifest V3), Nest.js,
PostgreSQL.​

Senior Frontend Developer
Mainn.app (Startup) — Advanced Calendar & Social Network hybrid mobile app • Kyiv,
Ukraine (remote)
August 2023 - present
Duration: 2 years 6 months
Team Size: 4
●​ Provided architectural leadership and project management across the entire product
lifecycle.
●​ Led development of the hybrid mobile application (Angular + Ionic + Capacitor) for
Android and iOS.
●​ Designed application structure, state management (NgRx), and integration with Google
Calendar API and Google Maps API.
●​ Developed and maintained the landing website.
●​ Oversaw release processes, task planning, and coordination within a small
cross-functional team.
Tech stack: JavaScript, TypeScript, Angular 19, NgRx, RxJS, Google Calendar API, Google
Maps API, TurboSMS API, Dextel API, Ionic, Capacitor 7, Android/iOS apps, Push
Notification, Node.js, Nest.js, PostgreSQL
Senior Frontend Developer
Tikit.online (Startup) — Mobile app for bus, train and flight ticket purchases • Kyiv, Ukraine
(remote)
December 2020 - April 2023
Duration: 2 years 4 months
Team Size: 2-3
●​ Led development and provided technical leadership for a team of 2 developers and a
designer.
●​ Designed application architecture and implemented the mobile app using Angular, Ionic,
Cordova.
●​ Oversaw release processes, dev workflow, and feature planning throughout the product
lifecycle
●​ Integrated payment systems (Stripe, Wayforpay) and external ticketing APIs (Infobus) for
purchasing bus, train, and flight tickets.
●​ Delivered Android/iOS applications with push notifications, real-time updates, and a
smooth multi-step checkout flow.
Tech stack: JavaScript, TypeScript, Angular 12, NgRx, RxJS, Stripe and Wayforpay
payment, Ionic, Cordova, Android/iOS apps, Push Notification, Infobus API for purchasing
bus, train, flight tickets, Node.js, Express.js, MySQL

Senior Frontend Developer
Minn (Startup) — Advanced Calendar hybrid mobile app • Kyiv, Ukraine (remote)
May 2017 - June 2020
Duration: 3 years 1 months
Team Size: 2-3
●​ Led development and provided technical leadership for a team of 2 developers and a
designer.
●​ Designed application architecture and implemented the mobile app using Angular, Ionic,
Cordova.
●​ Oversaw release processes, dev workflow, and feature planning throughout the product
lifecycle
●​ Delivered Android/iOS applications with push notifications
Tech stack: JavaScript, TypeScript, Angular 9, Ionic 3, Cordova, Android/iOS apps, Push
Notification, Node.js, Express.js, MySQL
Product Manager
Oracle • Kharkiv, Ukraine (full-time)
Apr 2015 - June 2015
Duration: 3 months
Team Size: 2
●​ After Oracle acquired TOA Technologies, I facilitated a smooth transition by documenting
processes and providing detailed knowledge transfer to the incoming Product Manager.
Tech stack: Axure RP, company documentation

​

​
Product Manager / Project Manager
TOA Technologies — ETAdirect - a Mobile workforce management system (SaaS) •
Kharkiv, Ukraine (full-time)
September 2012 - March 2015
Duration: 2 years, 7 months
Team Size: 2-10
●​ Drove the development of ETAdirect, a leading mobile workforce management system
recognized in the Gartner Magic Quadrant.
●​ Negotiated with clients, analyzed business processes, gathered requirements, and
iteratively refined solutions, authored technical specifications and UX prototypes
●​ Designed and prototyped UX/UI for complex features.
●​ Led cross-functional teams of BAs, designers, and developers, delivering the platform
from concept to deployment.
●​ Supported top management in creating high-impact presentations and roadmap
planning, contributing to major investments and the company’s eventual acquisition by
Oracle.
Tech stack: Axure RP, specifications, documentation
Lead Full-Stack Web Developer
TOA Technologies — ETAdirect - a Mobile workforce management system (SaaS) •
Kharkiv, Ukraine (full-time)
August 2003 - September 2012
Duration: 9 years, 2 months
Team Size: 1-6
●​ Joined as the first full-stack developer and built ETAdirect from scratch using PHP,
MySQL, Apache, and a custom JavaScript framework.
●​ Progressed to Lead Developer, managing a team of up to 6 developers and designers.
●​ Oversaw development workflow, feature planning, and release processes throughout the
product lifecycle.
●​ Played a key role in architecting and scaling the platform to support SaaS operations.

Tech stack: JavaScript, AJAX, JQuery, HTML3-5, CSS, Sencha Touch, PHP, Turck
MMCache, Zend IDE, PHPMyAdmin, MySQL, Apache, Nginx, XML, XSLT, FreeBSD, CVS,
Mantis, RESTful API