Middle Fullstack PHP Developer (Network Security & API)

Top 3 reasons to join us

• Professional, creative, and dynamic team
• Opportunities for growth and development
• Attractive salary and benefits package

Job description

About the Role

We are developing an intelligent access monitoring system that analyzes network traffic, IPs, and HTTP headers to detect risks and decide whether to allow or block requests. We are looking for a Middle Fullstack PHP Developer with strong networking and security expertise to enhance system performance and integrate third-party APIs.

Key Responsibilities

• Build and maintain PHP (MVC) systems for suspicious traffic detection.
• Develop middleware to process requests, standardize real IPs, and collect signals (geo, ASN, UA, device).
• Integrate third-party APIs (IP Intelligence, Device Fingerprinting, Bot Detection, GeoIP).
• Implement a real-time Rule Engine for risk scoring and decision-making (allow/deny/challenge).
• Create admin dashboards for log monitoring, rule management, and performance tracking.
• Optimize performance using caching (Redis), queues (RabbitMQ/Redis Queue), and log streaming.
• Ensure system security (rate limiting, anti-spoofing, proxy/VPN/Tor detection).
• Work with DevOps to deploy scalable, reliable infrastructure.

Your skills and experience

Requirements

• 3+ years of experience with PHP (Laravel, Symfony, or ThinkPHP) and MVC frameworks.
• Solid knowledge of HTTP, TCP/IP, proxies, CDN, TLS/SSL, CORS.
• Hands-on experience with API design and integration (REST/GraphQL, HMAC, OAuth).
• Strong database skills: MySQL/MariaDB optimization, Redis or other caching systems.
• Good understanding of web security: XSS, SQLi, CSRF, SSRF, replay attacks.
• Skilled in log analysis and debugging in production environments.
• Familiarity with Docker and CI/CD pipelines.

Nice to Have

• Experience with IP Intelligence providers (MaxMind, IPinfo, IPQualityScore).
• Knowledge of JA3/JA4 fingerprinting and advanced bot detection.
• Exposure to SIEM, monitoring systems, or rule engines.
• Basic front-end experience (React/Vue/Blade) for dashboard development.

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Why you'll love working here

• Competitive salary with annual performance reviews
• Social, health, and unemployment insurance according to law
• Clear career advancement opportunities
• Professional training and skill development
• Dynamic, friendly, and supportive work environment
• Opportunity to build a large-scale, security-critical system.
• Open culture with strong learning opportunities in security and distributed systems.
• Direct involvement in architectural and technical decision-making.