Максим

MAKSYM VOLOSHOK
PHP / LARAVEL BACKEND DEVELOPER
Kryvyi Rih, Ukraine | Remote | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація») | Telegram: @mxkkst

PROFILE
PHP/Laravel backend developer with nearly 4 years of commercial experience delivering APIs and business applications
for mobile, SaaS, B2B and e-commerce products. Build backend services from scratch, integrate external systems,
implement asynchronous workflows and modernize production applications. Experienced with document signing, 1C
synchronization, authentication and database-intensive processes.

TECHNICAL SKILLS
Core backend PHP, Laravel, REST APIs, Eloquent ORM, service integration, queues/jobs, events, webhooks, Yii2
Data & security MySQL, Redis, SQL optimization, transactions, JWT, Laravel Sanctum, OTP, RBAC
DevOps & quality Docker, Linux, Nginx, Git, Sentry, PHPUnit, Swagger / Scramble
Integrations 1C, QES/KEP, Diia.Signature, Firebase FCM, payments, SMS, Laravel Nova, October CMS
Additional frontend Vue 2/3, Inertia.js, JavaScript, React, TypeScript, Tailwind CSS

PROFESSIONAL EXPERIENCE
Webstick | PHP / Laravel Developer Jan 2023 – Present

B2B platform | Document workflows & mobile backend
• Designed and built a Laravel backend from scratch: data models, versioned REST APIs and a Laravel Nova
administration panel.
• Implemented document generation and QES/KEP and Diia.Signature signing flows, including verification, signed-file
storage and auditability.
• Integrated multiple 1C databases for bidirectional synchronization of customers, invoices and documents via queued
jobs and webhooks; added RBAC, payments and Firebase notifications.
Mobile APIs & messaging
• Developed account and authentication APIs using SMS/OTP, JWT access tokens and rotating refresh tokens;
implemented profiles and progress tracking.
• Connected self-hosted messaging and user provisioning with queued processing, isolating chat service outages from
the core backend.
SaaS, CRM & e-commerce
• Delivered CRM and SaaS features including subscriptions, plan limits, analytics, reporting, exports and payment
fiscalization; developed XML feeds and bulk imports with asynchronous image processing.
• Expanded a product catalog into an online store with checkout, discounts and order workflows; the store handled
100+ orders on launch day.
• Upgraded a production system from Laravel 5.8 / PHP 7.4 to Laravel 10 / PHP 8.2; rebuilt checkout and integrated SMS
and delivery services.
• Implemented 1C synchronization of products, prices, customers and orders, processing batches of 5,000+ products
with images.
Additional work
• Maintained a native-PHP operational CRM, optimized SQL queries and migrated the development environment to
Docker; contributed to Vue-to-React/TypeScript module migration and n8n integrations.

EDUCATION & LANGUAGES
State University of Economics and Technology (DUET), Kryvyi Rih | Software Engineering (Specialty 121), 4th year, part-time
English: B1 (Intermediate) | Ukrainian: Native