09/07/2026 updated
100 % available
Senior Software Engineer | Backend & Distributed Systems Specialist
Mykolaiv, Ukraine
Only remote
Bachelor's degree in Applied LinguisticsAbout me
Senior Software Engineer with 15+ years in PHP, Laravel, and Symfony. Specializes in REST APIs, microservices, secure payments, and high-traffic pipelines. Expert in deep-dive debugging, root-cause analysis, and resolving complex edge-case bugs, memory leaks, and query bottlenecks.
PHPApplication Programming Interfaces (APIs)DjangoJoomlaPython (Programming Language)LaravelPostgreSQLMemcachedMySQLNGINXPHP DevelopmentPrestaShopRedisSymfonyWordPress
PHP & Framework Expertise
Extensive knowledge of PHP (7.x - 8.x) as well as the Laravel, Symfony, and Zend frameworks. Development and maintenance of high-performance backend APIs and complex web applications using modern PHP stacks.
Database Design & Caching
Solid knowledge of MySQL database design, database query optimization, and implementation of caching strategies with Redis and Memcached to improve system performance.
REST API & Microservices Architecture
Design and implementation of scalable REST APIs and microservices architectures. Refactoring monolithic systems into decoupled service layers to improve maintainability and reduce errors.
DevOps & Linux Server Administration
Administration, configuration, and security of Linux production servers (CentOS/Ubuntu) using Nginx. Monitoring of server health and resolution of critical infrastructure failures.
Messaging & Event Streaming with Apache Kafka
Using Apache Kafka to implement messaging and event streaming pipelines in distributed systems.
Monitoring & Observability
Utilizing Kibana, Dynatrace, and Postman for system monitoring, performance analysis, and ensuring high availability.
Payment Integration & Data Pipelines
Designing and integrating secure, compliant payment processing workflows and financial data pipelines in high-traffic platforms.
Python & Bash Scripting
Knowledge of Python and Bash for automation tasks, system administration, and data processing.
CRM System Development & Reporting
Developing and maintaining complex internal CRM systems, as well as creating custom reporting modules for business processes and sales analytics.
Experience
Professional experience10+ years
Freelancer since2018
Languages
EnglishFluentRussianNative speakerUkrainianNative speaker
Project history
Architektur und Wartung hochnebenläufiger Backend-APIs für eine globale Dating-Plattform mit PHP/Laravel. Design sicherer Zahlungsworkflows und finanzieller Datenpipelines. Refactoring monolithischer Codebasen in entkoppelte Service-Schichten. Einsatz von Dynatrace, Kibana und Postman zur Systemüberwachung und Performance-Analyse.
Leitung der Backend-Entwicklung einer hochfrequentierten regionalen E-Commerce-Plattform für Samsung auf Basis von Laravel. Design skalierbarer MySQL-Datenbankschemata und Implementierung von Redis/Memcached-Caching-Strategien. Integration von Inventarverwaltungs- und Logistik-APIs für Echtzeit-Synchronisation zwischen digitalen Storefronts und physischen Lagern.
Entwicklung eines hochvolumigen Event-Aggregator-Portals mit Laravel. Aufbau robuster Datenaufnahmedienste zur Verarbeitung und Speicherung großskaliger, multiquellen Event-Datenfeeds. Optimierung von Suchindizes und Datenbankabfragen für hohen Nutzerverkehr und komplexe Filtermatrizen.