Микита

Nikita Karpenko
Senior Backend PHP Engineer
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SUMMARY

Experienced PHP Backend Developer with 8 years of commercial experience in backend
development, legacy modernization, feed integrations, parallel processing, production
support and cross-team delivery. Framework-agnostic backend engineer with commercial
experience across Yii2, CodeIgniter, Phalcon, Laravel, able to quickly adapt to unfamiliar
frameworks and codebases. Also has experience with relational databases, Redis,
RabbitMQ, internal/external APIs, monitoring and operational tooling. Worked as a Team
Lead for a team of 6 developers, with responsibility for releases, planning, task
decomposition, mentoring and delivery.

SKILLS

Backend: PHP 8+, Yii2, CodeIgniter, Laravel, Phalcon, Composer, Nginx, Apache
Testing: PHPUnit
Frontend: JavaScript, jQuery, HTML/CSS, SCSS
Databases & Storage: MySQL, PostgreSQL, Redis, MongoDB
Messaging & Logs & Search: RabbitMQ, ELK (elasticsearch, logstash, kibana),
OpenDistro, Graylog, Loki, Monolog
DevOps & Monitoring & Tools: Docker (Docker Compose), Git, GitLab CI/CD, Phing, Gulp,
Cron, Monit, Zabbix, Grafana, Vault, Argo, Linux
APIs & Protocols: REST API, API integrations, AMQP, LDAP, WebSocket, HTTP
Engineering Practices: SOLID, DRY, KISS, OOP, refactoring, legacy modernization,
production support, code review, task decomposition, database optimization, design
patterns, clean architecture
Leadership & Communication: mentoring, release coordination, planning, cross-team
communication, stakeholder communication.
Languages: English (intermediate), Ukrainian

EXPERIENCE

Senior PHP Backend Developer | BetInvest Tech (NDA) | Kyiv / Ukraine
Mar 2020 - July 2026

Stack: PHP, Yii2 (mainly), CodeIgniter, Laravel, PostgreSQL, Redis, RabbitMQ,
ELK/OpenDistro, Docker, Cron, Monit, Zabbix, Grafana, LDAP, Vault, Argo.
Career growth: Joined as a Middle PHP Developer, grew to Senior PHP Backend
Developer, worked as a Team Lead for a team of 6 developers for around one year, then
returned to a Senior individual contributor role focused on core engineering ownership.

● Owned a core direction of a high-load real-time data processing platform, including
business logic, external integrations, production support and delivery of new
functionality.
● Integrated multiple external data providers, implementing data mapping, validation,
synchronization, failover logic and production issue handling.
● Designed and developed internal data-feed functionality used to prepare and
distribute platform data to other systems and external partners.
● Developed background workers and long-running processes for asynchronous data
processing, automation and inter-process communication.
● Implemented failover mechanisms for provider-dependent workflows, improving
system stability and fault tolerance.
● Improved internal APIs and coordinated integration requirements with related
services written in PHP and Erlang.
● Optimized database queries, data-processing flows and parts of the application
architecture.
● Investigated and resolved hundreds of production issues in cooperation with QA,
DBA, DevOps, analysts and external technical teams.
● Mentored and onboarded more than 10 developers and QA engineers.
● Promoted to Team Lead for a team of six developers, with responsibility for planning,
task decomposition, technical reviews, releases and team delivery.

Junior Strong PHP Developer | Evogence - Kyiv / Ukraine
Aug 2019 - Mar 2020

● Developed new features, improved business logic and refactored legacy code in a
custom PHP framework-based project.
● Optimized existing database queries and fixed scripts related to database operations
and replication.
● Implemented API functionality for communication between internal projects

Junior Full Stack Developer | Omega TV - Kyiv / Ukraine
Jun 2018 - Aug 2019

● Developed and maintained admin panel functionality using CodeIgniter and Phalcon
● Implemented business logic changes and fixes for APIs used by the billing system.
● Worked with logging/statistics microservices including generation of XLS reports.
● Used Docker Compose for local deployment, Phing for migrations and GitLab CI.

EDUCATION

National University of Food Technologies - Faculty of Automation of Computer Systems,
Computer Science (master's degree)