Backend Engineer & Infrastructure Specialist

Backend Development

Building business logic, APIs, and robust admin panels with a security-first mindset.

• PHP expertise from version 5 up to the latest version
• Designing and implementing backend systems and business logic
• Complex or special computation layers using Go (when PHP is not ideal)
• Laravel and Livewire for websites and admin panels
• RESTful API design and integration with other panels and systems
• Common backend integrations: SMTP setup, SMS providers, authentication modules, registration/login flows, user management

AI Systems & Prompt Engineering

Building real AI-powered features using API-based models and local LLMs, with a focus on reliability, cost control, and production safety.

• Working with multiple API-based model providers and building clean integration layers (rate limits, retries, fallbacks)
• Prompt engineering for structured output, tool usage, and consistent quality across languages and edge cases
• Agentic systems: support agents, workflow orchestration, and task automation with auditability and guardrails
• Image and video generation pipelines (generation, post-processing, storage, and delivery)
• Local model workflows (e.g., DeepSeek and similar) including setup, deployment, and operational tuning
• Training/fine-tuning and practical evaluation loops for improving output quality on domain data
• Building analysis/monitoring systems for websites (data collection, scoring, reporting, and actionable insights)

WordPress Development

Custom themes and plugins for corporate sites and e-commerce, plus secure setup, automation, audits, and recovery work when needed.

• Custom corporate and e-commerce theme development
• Custom plugin development
• Financial and invoicing solutions (custom invoice builders)
• Special financial/calculation modules tailored to business rules
• Installation, migration, update workflows, and operational automation (staging, backups, and repeatable deployments)
• Security hardening, plugin/theme audits, troubleshooting, and repair of compromised or broken WordPress sites

Tools & Technologies

Extensive hands-on experience using modern development, automation, and productivity tools in professional environments.

• Confident with Visual Studio Code and PhpStorm, including efficient project structuring, debugging, and plugin-based workflows
• Experience with AI-assisted development tools such as GitHub Copilot, Cursor, and Trae, including custom prompt and rule definitions to improve workflow and code quality
• API testing and workflow tooling with Postman (collections, environments, documentation, and collaboration)
• Practical use of Adobe Photoshop and Adobe Illustrator for creating and editing UI assets, graphics, and visual content
• Routine use of Microsoft Office for documentation, planning, and project communication
• Experience with server security tools, including configuration and administration of antivirus and protection systems in production environments
• Broad proficiency with developer and system tools supporting deployment, maintenance, and monitoring of modern web and server infrastructure

Frontend Development

Practical frontend foundations with strong attention to detail (pixel-perfect execution), aligned with secure server-side validation, accessibility, and clean UX.

• HTML, CSS, SASS, Tailwind CSS, Bootstrap, JavaScript
• Converting designs to real UI (Adobe Illustrator/Photoshop → code) with pixel-perfect spacing and typography
• Security-aware client-side validation and clean input handling
• Coordinated frontend + backend validation (consistent rules and error handling)
• Deep understanding of responsive layout and UI implementation details
• Building reusable UI components and consistent design systems (tokens, spacing scale, variants)
• Accessibility basics: semantic HTML, keyboard navigation, focus states, ARIA when needed
• Performance-aware implementation: image strategy, lazy-loading, minimizing layout shifts, Core Web Vitals mindset
• Creating smooth, attractive animations and micro-interactions with JavaScript, transitions, and CSS keyframes
• Integrating frontend build pipelines (Vite) and keeping assets predictable in production
• Special/custom CAPTCHA systems when needed
• Honeypot structures against bots
• Detecting and blocking unwanted crawlers and bots

Operating Systems & Virtualization

Deployment, hardening, and automation across modern virtualization and OS stacks.

Proxmox / ESXi / Virtualizor

• Full configuration and setup
• Backup system implementation

Linux and Linux Server

• Full configuration and setup
• Advanced settings and tuning
• Security hardening and access restriction
• Cron job configuration
• Bash scripting
• FTP services setup
• Secure SSH access setup

Windows and Windows Server (GUI)

• Full configuration and setup
• Advanced settings and tuning
• Security hardening and access restriction
• FTP setup
• Task scheduling / cron-like setups

macOS

• Full configuration and setup
• Advanced configuration

SEO & Technical SEO

A practical, documentation-driven approach to measurable SEO improvements: correct tagging, clean indexation, and debugging based on real crawl and performance signals.

• Working with Ahrefs and Moz (audits, keywords, backlinks)
• Google Search Console + Google Analytics (indexing, performance, reporting)
• Advanced technical SEO: crawl/index control, canonicalization, sitemaps/robots, structured data, hreflang, and redirects
• Professional meta and social tagging: title/description rules, canonical, robots, Open Graph, Twitter Cards
• Structured data (JSON-LD) implementation and validation: WebSite/Person/BreadcrumbList/FAQ when applicable
• Debugging and analysis workflows: coverage/indexing issues, crawl anomalies, duplicate URLs, and render problems
• Core Web Vitals and performance-oriented implementation (LCP/CLS/INP) with real fixes, not hacks
• Implementing pages and code according to Google documentation, web standards, and globally accepted best practices

Network Engineering (Cisco & MikroTik)

Strong hands-on experience configuring, managing, and operating network infrastructure based on Cisco and MikroTik devices.

• Configuring and operating switches and routers (Layer 2 & Layer 3)
• Implementing VLANs, routing, NAT, and firewall rules
• Using and integrating APIs to automate network processes
• Planning, installing, and commissioning network hardware in production environments
• Analyzing and optimizing network performance and stability
• Practical understanding of modern network architectures and secure, scalable infrastructure

Load Balancing & Distributed Systems

Experience designing and operating load-balancing and cluster architectures for highly available systems.

• Building and operating server clusters for load distribution and fault tolerance
• Implementing load-balancing strategies (e.g., round robin, failover, traffic distribution)
• Optimizing systems for high availability and horizontal scaling
• Integrating load balancing with existing infrastructure and APIs
• Monitoring and performance tuning of distributed systems under high load
• Focus on stable, scalable, and fault-tolerant architectures in production environments

Domain & Registrar Systems (Joker, Namecheap, GoDaddy, etc.)

Deep practical experience with registrars and domain infrastructure, especially Joker, Namecheap, and GoDaddy. Extensive work with registrar APIs to automate domain registration, management, and transfers.

• Automated domain purchase workflows, including monitoring and registration of expired/dropped domains
• Domain locking mechanisms (transfer lock, security policies)
• Sales and provisioning logic in hosting environments
• Integration of domain services into custom platforms (billing, DNS, provisioning)
• Strong understanding of the domain lifecycle, DNS delegation, registrar interfaces, and the commercial + technical aspects of domain trading

Cloudflare Engineering & Security Systems

Advanced Cloudflare expertise across infrastructure, security, and API-driven automation for scalable, secure, high-availability systems.

• Cloudflare API integration to automate DNS, security rules, and IP management
• Building and operating Cloudflare Tunnel (Zero Trust) architectures
• DNS system configuration and optimization, routing, and performance tuning
• Implementing WAF rules, rate limiting, and security policies
• Automated IP blocking and threat mitigation via external systems and APIs
• Using Cloudflare Workers to extend edge logic and request handling
• Managing HTTP headers, caching strategies, and CDN optimization
• Experience designing scalable, secure systems with DDoS protection, edge computing, and high availability in mind

Computer Hardware

Diagnosis and proper assembly with attention to stability and cooling.

• Diagnosing PC hardware issues
• Replacing components
• Assembling computers properly (airflow, cable management, power considerations)
• Configuring and updating BIOS settings

Computer Software

Troubleshooting, recovery, and clean system restores with reliable tools.

• Diagnosing software issues on PCs
• Installing and configuring software
• Virus removal and system cleaning
• Repairing/restoring Windows installations using boot tools

Mobile Software

Firmware, recovery, and device-level troubleshooting for common issues.

• Flashing smartphones and updating firmware
• Installing and configuring mobile apps
• Repairing IMEI/serial issues
• Repairing boot problems

Mobile Hardware

From component replacement to board-level repairs.

• Diagnosing smartphone hardware issues
• Replacing components
• Mobile board repairs (board-level)

Data Recovery

Professional recovery workflows for HDD/SSD, including advanced tooling.

• Repairing HDD and SSD drives at a technical level
• Data recovery with professional recovery software
• Data recovery with PC-3000
• “Hard drive surgery”: clean environment opening, head and cylinder replacement (when applicable)

Server Hardware

Reliable server maintenance and standards-based configuration.

• Server hardware repair
• Upgrading and replacing server components
• Proper, standards-based server configuration
• Firmware updates for server management interfaces (e.g., iLO)

Server-side Security

Hardening systems, securing domains, and reducing attack surface with clear rules, monitoring, and automation where possible.

• Operating system and firewall hardening
• Firewall rules and service exposure control (least privilege, allowlists, rate limits)
• IP blocking systems against SSH brute-force attacks
• Implementing CrowdSec
• Domain security basics: secure DNS, sensible TLS/HSTS, and protection against common misconfigurations
• Security analysis and practical hardening plans based on logs, traffic patterns, and real threats
• Automatic SSL systems (e.g., Let’s Encrypt automation workflows)

Enterprise Cryptography (TPM, File Encryption, HSM)

Implementing cryptographic building blocks for sensitive data and high-trust workflows, aligned with enterprise security requirements.

• TPM-backed key usage for stronger device trust and protected key material
• File and data-at-rest encryption strategies (envelope encryption, key rotation, access control)
• Sensitive-field encryption patterns for applications (e.g., tokens, secrets, regulated attributes)
• HSM-backed operations for special transactions: signing, encryption, and restricted key usage
• Secure key lifecycle management: generation, storage, rotation, and auditing
• Designing security controls to support organizational policies and compliance-driven requirements