Сергій

SERHII HAVRYSHCHAK
PHP FULL STACK DEVELOPER
(LARAVEL / VUE.JS)

EMAIL: [open contact info](look above in the "contact info" section)

PHONE NUMBER: [open contact info](look above in the "contact info" section)

PRIMARY SKILLS ​

●​ Backend: PHP, Laravel, Lumen, REST
API, JWT, OpenAPI / Swagger
●​ Frontend: Vue.js (Vuex, Vue Router,
Vuetify, Vuelidate), Nuxt.js, JavaScript,
jQuery, Chart.js, Moment.js, Lodash, Rivne, Ukraine
Axios, i18n
●​ Admin Panels: Filament, SleepingOwl LANGUAGE KNOWLEDGE
Admin
● Ukrainian – native
●​ Database: MySQL, PostgreSQL
● English – intermediate
●​ DevOps / Infra: Docker, Git,
Websockets (Laravel Echo), MQTT
(Mosquitto) SOFT SKILLS
●​ Other: HTML5, CSS3, Bootstrap, Google Logical thinking, ability to gather, organize
(Auth, Maps, Firebase), Composer, and analyze information, problem solving,
NPM flexibility, teamwork.

EDUCATION​

● The Rivne National University of Water
Management and Nature Resources Use,
Specialist degree,
● The IT Step Academy, developers
academy​
● The Softgroup PHP academy - courses
php, yii2
EXPERIENCE

Mozar, Full stack PHP developer
2025

Real Estate CRM
Description: CRM system for real estate agencies
Technologies: Laravel, PostgreSQL, Filament, Docker, microservices
Responsibilities:
Developed a reporting module — questionnaire system, report generation and
processing workflow
Built a learning management module (LMS) — course constructor, lessons, tests
and progress tracking for junior specialists
CRM support and feature implementation
E-commerce & Catalog Sites
Description: Corporate websites and online stores based on Laravel and Filament
Technologies: Laravel, Filament, PostgreSQL
Responsibilities: Development and support of catalog sites and e-commerce
stores; migration and modernization of legacy projects

УТГ, Full stack PHP developer
2023 - 2025

prosto.net, crystal.in.ua, prosto.tv
Description: Development and maintenance of corporate websites for a group
of internet service providers (ISP) with IPTV/OTT online television platform,
subscriber self-service portal, bonus programs and marketing campaigns.
Technologies: Laravel, Vue.js, MySQL
Responsibilities:
Development and support of ISP corporate websites (prosto.net, crystal.in.ua)
Feature development for OTT/IPTV streaming platform prosto.tv (300+ channels,
20,000+ movies, multi-device support)
Implementation of marketing campaigns, promotional landing pages and
widgets
Development of subscriber-facing features: bonus program, promo codes,
personal account functionality
Full stack development — from database and backend API to frontend
realization
CitrusDev, Full stack PHP developer
2022 - 2023, part-time 2026

Carpill
Description: Alert management and device tracking system for real-time
geolocation-based speed camera and road hazard reporting. Covers the full
interaction flow between physical hardware devices and a mobile application.
Technologies: Laravel 12, PostgreSQL, MQTT (Mosquitto + Dynamic Security), JWT
(RSA-256), Vue 3, Vuetify, Spatie Permission, Spatie Laravel Data, Docker,
OpenAPI/Swagger
Responsibilities: Solo backend development from scratch. Designed and
implemented REST API for three separate client types: physical device, mobile
app, and web admin panel. Built MQTT broker integration with dynamic ACL
management for real-time sector-based alert distribution to devices. Developed
RSA-256 JWT authentication flow for device MQTT sessions. Implemented
geospatial sector grid system for alert routing. Built subscription and plan
management.

Game of Minds
Description: Online quiz mobile game with real-time multiplayer, multiple topic
categories and real money prizes. Laravel REST API and admin panel.
Technologies: Laravel, Firebase
Responsibilities: Support and maintenance of the legacy project

Parking-expo
Description: CRM system for parking access management at Expo Tel Aviv.
Multi-role platform handling real-time vehicle recognition, guest quota
management per category and event, financial reporting, and gate barrier
control via integration with HTS Vehicle Recognition System (VRS).
Technologies: Laravel, JWT, Spatie Permission, Vue.js, Vuetify, Vuex, Vue-i18n, Vue
Router, Websockets, Moment.js, Lodash
Responsibilities: Designed and implemented REST API with role-based access
control (RBAC). Built integration with HTS gate controller for real-time barrier
management (vehicle recognition and gate response within 1 second).
Implemented guest quota logic per category and event. Developed full frontend
based on Vue.js with role-based routing and permissions.

SOTA
Description: API service extending AmoCRM functionality for a company selling
accounting software licenses. Handles automated client notifications, contract
delivery and deal processing across sales pipelines.
Technologies: Lumen, jobs, queues
Responsibilities: Implemented webhook integration with AmoCRM for automated
deal pipeline processing. Built background job system for sending client
notifications, contracts and emails triggered by deal stage changes. Ensured
reliable processing of high-volume deal flows for accounting software license
sales.

Mozar, Full stack PHP developer
2021 - 2022

IBAZA CRM
Description: CRM and property database platform for real estate agencies in
Rivne region. Subscription-based access for agents to a shared apartment listings
database with tools for managing property sales.
Technologies: Laravel, SleepingOwl Admin, jQuery
Responsibilities: Support and maintenance of the platform. Implementation of
new features for subscription and access management, agent account
functionality and bug fixing.

CRM Speed
Description: CRM system for real estate agency built on microservices
architecture (early-stage development)
Technologies: Docker, Laravel, Lumen, Vue.js, Vuex, Vuetify, Moment.js
Responsibilities: REST API implementation using Lumen with flexible roles and
permissions system. Development of core user management and internal
business logic dictionaries as a foundation for future CRM functionality.

Business Card & Catalog Sites
Description: Corporate websites and product catalog sites for various clients
Technologies: Laravel, SleepingOwl Admin
Responsibilities: Development of business card websites and catalog sites with
content management via SleepingOwl admin panel.

NUWM, Full stack PHP developer
2020-2021

Campus Mapper — map.nuwm.edu.ua

Description: Interactive online campus map for the National University of Water
and Environmental Engineering (Rivne). Covers buildings, institutes, laboratories
and dormitories with detailed floor-by-floor navigation, room-level search and live
schedule integration.
Technologies: Laravel, Vue.js, Vuetify, Vuex, Vue Router, Leaflet.js, Moment.js

Responsibilities: Admin panel and client-side development. Implementation of
interactive SVG floor plan schemas with room-level detail (offices, departments,
staff locations). Global room and staff search across all buildings. Schedule
integration per room with real-time timetable display. Navigation across buildings,
institutes, departments and dormitories. Integration with external university API.

HelpDesk for NUWM

Description: Internal CRM system for daily task management

Technologies: PHP, JavaScript, jQuery

Responsibilities: Refactoring and updating existing CRM system according to client
requirements.

Rivo Agency, Full stack PHP developer
2018-2020

Bullseye (CRM for coworking)

Description: CRM system for managing coworking space clients and operations.
Multi-role platform with task management, client servicing, reporting and Google
Calendar integration.

Technologies: Vue.js, Vuex, Moment.js, JWT, Laravel

Responsibilities: Frontend development based on Vue.js. Initial project setup
(Laravel, auth, roles). Google Calendar integration from scratch. Direct client
communication in English (acting as de-facto team lead in absence of PM).

Mens Health CRM

Description: HIPAA-compliant platform for online health assessment and
prescription medication sales for the US market.

Technologies: Vue.js, Nuxt.js, Bootstrap, Vuetify

Responsibilities: Frontend development using Nuxt.js.
Other projects: Stick4r (iOS app CRM, sticker license management), Boat Buy (iOS
app admin panel, agreement templates and Dropbox integration), Farmsteadusa
(farmer search CRM with Google Maps), internal employee accounting CRM.

Softgroup, PHP Laravel developer
2018-2018

Survey system for medicine

Description: Survey platform for medical institutions with dynamic survey
constructor, result visualization and scheduled surveys.

Technologies: PHP, Laravel, JavaScript, jQuery, Bootstrap, MySQL

Responsibilities: Responsive markup, survey constructor development, results
viewing and survey scheduling.

Online store

Description: E-commerce store for shoes and accessories.

Technologies: PHP, Laravel, Vue.js, JavaScript, jQuery, Bootstrap, MySQL

Responsibilities: Responsive markup, search engine refactoring, product filters
improvement, accounting system sync, reviews feature with bulk Excel import,
catalog development.

Other projects: CRM for Christian community (Yii2, auth, notifications, user
management), tutor search platform (Laravel, search and filters).