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Nicolai Celombitco

@nicolaicelombitco

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Experienced Senior PHP Developer specializing in high-load backend systems.

Moldova

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What I'm looking for

I am looking for a role that challenges my skills and fosters growth in a collaborative environment.

I am an experienced Senior PHP Developer with over 13 years of expertise in high-load backend development, API optimization, and cloud integrations. My passion lies in creating scalable solutions and modernizing legacy code, ensuring that systems are both efficient and resilient under heavy traffic. I have a deep understanding of technologies such as Laravel, Yii2, and various database systems, which allows me to deliver high-performance applications that meet the demands of today's digital landscape.

Throughout my career, I have successfully engineered and optimized backend systems, designed scalable APIs, and implemented event-driven architectures. My experience includes working with both relational and NoSQL databases, ensuring optimal performance and data integrity. I take pride in my ability to refactor and modernize existing codebases, enhancing maintainability and adherence to best practices. I am committed to delivering robust solutions that not only meet business requirements but also provide a seamless user experience.

Experience

Work history, roles, and key accomplishments

Software Engineer

Business Class

Dec 2024 - Feb 2025 (2 months)

Engineered and optimized high-load backend systems, designing scalable APIs using Laravel, Yii2, and PHP to ensure resilience and performance under heavy traffic. Revamped and modernized legacy codebases, significantly improving code maintainability, scalability, and development efficiency. Designed and implemented event-driven architecture and asynchronous workflows with RabbitMQ, optimizing data

Laravel PHP MySQL PostgreSQL MongoDB Elasticsearch RabbitMQ API Performance Backend Development Legacy Code

Software Engineer

YMK-IT Management SRL

Oct 2022 - Jan 2024 (1 year 3 months)

Developed and maintained high-performance web applications, ensuring scalability, security, and reliability. Designed and implemented new functionality, enhancing system capabilities and user experience. Refactored and optimized legacy code, improving performance, maintainability, and adherence to best practices.

Web Application Development API Integration Refactoring Performance Optimization Unit Testing Functional Testing Integration Testing Scalability Security

Software Engineer

Intelligent Contacts

Dec 2021 - Sep 2022 (9 months)

Developed and maintained high-performance web applications, ensuring stability, scalability, and security. Enhanced and expanded application functionality, introducing new features and performance optimizations. Refactored and modernized existing codebases, improving code quality, maintainability, and adherence to best practices.

Web Application Development Refactoring Code Modernization Automated Testing Unit Testing Functional Testing Integration Testing Scalability

Software Developer

Smart Laboratory Pro SRL

Oct 2020 - Dec 2021 (1 year 2 months)

Designed, developed, and deployed complete CRM and CMS systems, enhancing business operations and user experience. Architected and built fully functional e-commerce platforms, optimizing performance, security, and scalability. Led end-to-end development of web applications, handling backend, database optimization, and cloud integrations.

CRM CMS Web Application Development Backend Development Database Optimization API Integration Full Development Lifecycle Management

Web Developer

AutoDoc

Dec 2014 - Oct 2020 (5 years 10 months)

Designed, developed, and maintained complex, high-load web platforms using FuelPHP, Laravel, and modern PHP technologies. Led the backend architecture for database-intensive applications, ensuring scalability, performance, and security. Built and optimized high-volume database-driven systems integrating MySQL, MongoDB, and Elasticsearch to handle millions of records efficiently.