Viktor K.

Digital marketing platform integrating client CRMs (Salesforce, HubSpot, OroCommerce) into unified agency-managed system for streamlined, data-driven campaigns. Key Responsibilities & Achievements: Built/maintained Laravel API backend + React frontend for campaign/task/client management Managed high-volume queues (Laravel Horizon) for emails, CRM sync, webhooks Integrated 7+ platforms (SendGrid, Stripe, Slack) with secure API endpoints Node.js services for data transformation/webhook processing MySQL optimization (schemas, indexing, query refactoring) + Redis caching Real-time dashboards via Laravel Broadcasting/WebSockets Automated testing (Playwright) + CI/CD (GitLab → Platform.sh/AWS/Vercel) Mentored team, improved standards/documentation Tech Stack: PHP 8.3, Laravel, React/Next.js, Node.js, TypeScript, MySQL, Redis, GitLab CI/CD, AWS (EC2/S3/Lambda), Salesforce, HubSpot, Stripe

Commerce platform for commercial real estate - centralized marketplace for property listings, inquiries, and services (Desktop + Mobile). Key Responsibilities & Achievements: Laravel/Angular/TypeScript full-stack development for seamless UX Node.js backend scripts for data sync/background processing Flutter mobile UI/API integration support AWS infrastructure (EC2/S3/Lambda/RDS/CloudFront) optimization WordPress customization for content management Led feature dev + project management + timelines MySQL/Redis performance optimization REST APIs for frontend-backend + 3rd party integrations PHPUnit automated testing + responsive Bootstrap UI Tech Stack: PHP 7.2, Laravel, Angular, Node.js, Flutter, WordPress, TypeScript, MySQL, Redis, AWS, Docker, GitHub

Interactive learning platform delivering engaging, student-centered academic experiences and skill development through dynamic tools. Key Responsibilities & Achievements: Symfony PHP 8.2 backend development for robust educational services and interactive learning modules supporting large-scale student engagement Designed and maintained RESTful APIs integrating WordPress CMS and third-party services for seamless frontend-backend communication Implemented WebRTC real-time collaboration features enabling peer-to-peer video conferencing, live tutoring sessions, and shared virtual whiteboards Integrated Twilio APIs for SMS notifications (assignment deadlines, automated progress reports, MFA secure logins) enhancing user engagement PostgreSQL database optimization with Redis caching and ElasticSearch for fast content search and student progress tracking across large datasets Comprehensive PHPUnit automated testing suite ensuring regression-free deployments and high system reliability