About Kostiantyn
Hello,
I’m Kostiantyn, Senior Laravel developer with 9+ years of experience. I build scalable, test-driven applications.
Short, about my last position:
Senior Laravel / Full-Stack Developer (Tech Lead)
Led development of a large SaaS platform with a distributed team (7 devs).
- Upgraded Laravel 6 → 10 in production with zero downtime.
- Integrated Livewire/Vue.js + Tailwind to replace legacy front-end and speed up feature delivery.
- Built scalable APIs for web, browser extensions, and mobile clients.
- Optimized database queries, caching, queues, improved performance under high load.
- Implemented CI/CD pipelines with automated testing and code quality checks.
- Designed reporting & analytics modules (KPI dashboards, custom exports).
- Mentored developers and enforced clean code standards.
- Developed a full affiliate system: partners can track clicks, view transaction stats, manage payouts, and generate invoices from their dashboard.
- Built a recommendation system for end-users based on their preferences and behavior, increasing engagement and conversions.
- Created a flexible affiliate integration framework supporting advertising platforms like AWIN, Rakuten, eBay, Adcell, Digidip, Communicationads, Retailads, Partnerize, CJ, Tradedoubler, Yieldkit, Saturn, Brandreward, Impact Radius, Smava, Noctemque, Financeads.
- Developed an analytics dashboard for large-scale promo campaigns, integrated with Mailgun API to track delivery and conversion metrics.
Result: faster release cycles, improved system stability, and better developer productivity.
Tech stack:
Laravel, Livewire, Vue.js, Tailwind, Alpine.js, PHP, Node.js, TypeScript/JS, MySQL/PostgreSQL, Redis, Docker, CI/CD, PHPUnit.
Availability:
EU (France) timezone; conversational English, basic French. I’m available to start quickly
English
Conversational
French
Basic
Ukrainian
Native or bilingual
Can work on-site
Valence (up to 50km)
Experience
- LumalyTech Lead / Senior PHP DeveloperJuly 2020 - Today (5 years and 11 months)Led development of a large SaaS platform with a distributed team (7 devs).
- Upgraded Laravel 6 → 10 in production with zero downtime.
- Integrated Livewire/Vue.js + Tailwind to replace legacy front-end and speed up feature delivery.
- Built scalable APIs for web, browser extensions, and mobile clients.
- Optimized database queries, caching, queues, improved performance under high load.
- Implemented CI/CD pipelines with automated testing and code quality checks.
- Designed reporting & analytics modules (KPI dashboards, custom exports).
- Mentored developers and enforced clean code standards.
- Developed a full affiliate system: partners can track clicks, view transaction stats, manage payouts, and generate invoices from their dashboard.
- Built a recommendation system for end-users based on their preferences and behavior, increasing engagement and conversions.
- Created a flexible affiliate integration framework supporting advertising platforms like AWIN, Rakuten, eBay, Adcell, Digidip, Communicationads, Retailads, Partnerize, CJ, Tradedoubler, Yieldkit, Saturn, Brandreward, Impact Radius, Smava, Noctemque, Financeads.
- Developed an analytics dashboard for large-scale promo campaigns, integrated with Mailgun API to track delivery and conversion metrics.
- QATestLabPHP Developer - CRM system developerMarch 2019 - June 2020 (1 year and 3 months)
- Customization of the CRM system for the needs of the sales department and automatization of daily processes
- Implementation of modern lead search tools
- Development and support of Chrome extension
Experience: I was engaged in the development and support of software for the sales department. This is the automation of everyday user tasks, such as - finding new target contacts, facilitating communications, adding analytical tools, helping users generate reports.In the development team, I helped the customer have a realistic idea of the possibilities, time frames and limitations in order to avoid misunderstandings. - Royal IntegrationEngineer SoftwareApril 2017 - March 2019 (1 year and 11 months)Development of extensions for the medical CRM system, support and development of online stores, development of information sites on the WordPress platform.Also served as the technical lead of the support department - solving non-standard tasks of the support department, training newcomers in the support team, supporting VIP clients, building a training process for the client team.
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Education
- Information and telecommunication technologies and systemsPoltava National Technical Yuri Kondratyuk University2016Information and telecommunication technologies and systems
- Electrician maintenance and repair of signaling devicesDnepropetrovsk Railway Professional2008Electrician maintenance and repair of signaling devices