About Me

Alexander Zahatski

Senior Backend Developer & Software Engineer

Remote Contractor | EU-based

Available for long-term B2B contracts | Remote-first | Timezone-flexible (CET–UK–US EST)

Overview

I'm a seasoned backend developer with 20+ years of experience building and maintaining large-scale software systems. My expertise spans backend architecture, API design, DevOps practices, and performance optimization. I specialize in creating robust, scalable solutions for high-traffic applications and complex data-driven systems.

Open to Long-Term Contracts

I'm available for B2B contracts and independent contractor engagements with companies in:

  • Regions: USA, UK, Worldwide

  • Contract Type: B2B / Independent Contractor

  • Work Mode: Remote (timezone overlap: CET–UK–US EST)

  • Target Industries: Software development, backend systems, DevOps, AI tooling, automation, data-driven systems

  • Company Types: Tech startups, SaaS firms, AI/ML companies, enterprise vendors

Core Expertise

Backend Development & Architecture

  • Designing and implementing scalable backend systems for high-traffic applications

  • Building RESTful APIs and microservices architectures

  • Performance tuning and optimization for production environments

  • Legacy code maintenance, refactoring, and modernization

DevOps & Infrastructure

  • CI/CD pipeline setup and automation

  • Container orchestration with Docker

  • Linux/Unix system administration

  • Infrastructure as code and configuration management

Database & Data Systems

  • Database design and optimization (MySQL, PostgreSQL, MongoDB, Oracle)

  • Query performance tuning and profiling

  • Data migration and ETL processes

  • Managing high-volume data workflows

Security & Quality

  • Security vulnerability assessment and remediation

  • Code review and quality assurance

  • Test-driven development and automated testing

  • Production monitoring and troubleshooting

Technical Skills

Languages & Frameworks

  • Perl (20+ years, senior level) • JavaScript/TypeScript • Node.js • Golang • Java

  • React • Express.js • Modern web frameworks

Backend & APIs

  • REST API design • WebSocket • Message Queues (RabbitMQ)

  • FastCGI • PSGI/Plack • Microservices architecture

Databases

  • MySQL • PostgreSQL • MS SQL • SQLite • MongoDB, oracle

DevOps & Tools

  • Git • Docker • CI/CD • Linux • FreeBSD • macOS

  • Nginx • Apache • Vagrant • Chef • Shell scripting

  • Agile methodologies • TDD • Code profiling

Open Source

Professional Highlights

20+ Years of Production Experience

  • Built and maintained large-scale e-commerce platforms serving high-traffic volumes

  • Developed real-time data processing and telemetry systems

  • Architected complete backend infrastructures from scratch

  • Implemented security hardening and vulnerability remediation

Backend & API Development

  • Designed and built RESTful APIs for enterprise CRM systems

  • Developed high-load API infrastructure handling thousands of concurrent users

  • Created scalable message queue systems and real-time communication features

  • Implemented complex third-party API integrations

Performance & Optimization

  • Reduced application page load times by 40% through code optimization

  • Database query tuning and performance profiling

  • Built spam protection systems for large-scale social networks

  • Optimized high-traffic production environments

DevOps & Automation

  • Set up CI/CD pipelines for desktop and web applications

  • Created cross-platform software update systems (Linux, macOS, Windows)

  • Implemented infrastructure automation and configuration management

  • Managed production server environments and disaster recovery solutions

Team Leadership & Best Practices

  • Established coding standards and development workflows

  • Mentored developers and promoted testing practices

  • Collaborated in cross-functional Agile teams

  • Provided technical consulting and code reviews

Languages

  • English: Intermediate

  • Russian: Native

Connect

Available for long-term B2B contracts | Remote-first | Timezone-flexible (CET–UK–US EST)