Serg N. Kalachev
Moscow, Russia
Symfony Connect Certified Expert (Expert Level), Senior Fullstack & AI-Native Engineer
About
With a strong academic background in Applied Mathematics (MIREA) and over 30 years of hardcore engineering experience in IT, I specialize in designing fault-tolerant backend architectures, breaking down complex legacy monoliths, and fine-tuning databases under heavy concurrent traffic.
As an officially certified Expert-Level Symfony Developer, I have an under-the-hood understanding of the framework, Doctrine ORM, Messenger, and Security components. My daily practices are strictly driven by SOLID, DDD, Clean Architecture, and CQRS patterns.
Core Technical Competencies:
• Frameworks: Symfony (up to 7.x), Laravel, Yii2, Swoole (stateful & async PHP environment).
• Databases & Highload: Expert profiling and optimization of PostgreSQL & MySQL (EXPLAIN ANALYZE), indexing strategies, preventing race conditions via Redis distributed locks (Redlock).
• Queues & Infrastructure: RabbitMQ, Redis, Docker / Docker Compose, Linux/WSL2, GitLab CI/CD, ELK stack.
• Frontend Integration: Fullstack proficiency with React, Vue, and NextJS for complete client-server cohesion.
AI-Native Workflow (3x Time-to-Market Boost):
I systematically leverage an advanced Agentic workflow based on Cursor/Claude and Spec-driven development (OpenAPI). By automating boilerplate generation, comprehensive unit/functional testing (PHPUnit), and static analysis (PHPStan), I deliver clean architecture significantly faster than standard sprint estimates, keeping 100% personal control over core logic, security, and data consistency.
Collaboration & Availability:
I am fully autonomous, fluent in English (B2+), and have a proven track record of mentoring teams, leading technical discussions, and conducting deep code reviews. Based in Moscow (UTC+3), I am looking for long-term remote opportunities, preferably via B2B contract (registered IP).
Serg N. Kalachev is a member of the community since January 2007.
