About Me

Hi, I’m Anil Kumar Sen. I am a passionate and result-oriented Backend Software Engineer focused on building scalable, secure, and high-performance systems.

I started my career in the IT industry in November 2021 and over the past nearly 4 years, I have developed strong practical skills in backend development, integrations, real-time systems, and cybersecurity. My technical approach has always been “security-first” and “performance-oriented”, ensuring that every solution I deliver is reliable, maintainable, and production-ready.

My Career Journey (Step-by-Step)

1. Xcugas Technologies — Kishangarh (First Practical Exposure)

My professional journey started at Xcugas Technologies, where I gained exposure to real-world development workflows, team collaboration, and basic-to-intermediate architecture. I worked on PHP and Flutter projects, APIs, and frontend-mobile integration. I also adopted coding conventions, version control, and industry-standard practices, which strengthened my foundation.

2. Aptech — Ajmer (Training / Applied Projects)

At Aptech, Ajmer, I received structured training and worked on client-oriented projects, refining my skills in frameworks, deployment workflows, and problem-solving during practical challenges.

3. Saer Technologies Pvt. Ltd. — Jaipur (Current)

Since April 2023, I have been working as a Backend Software Engineer at Saer Technologies, Jaipur. I led the backend architecture for ServiceTasker (Australia), a service marketplace platform — including scalable RESTful APIs, real-time chat/notifications, and secure payment flows (Stripe/Razorpay/webhooks).

Large Database & Data-Handling Practices

• Schema Design & Relations: Normalized schemas, foreign/composite keys for data integrity.
• Indexing Strategy: Optimized single/composite indexes, query profiling with EXPLAIN.
• Query Optimization: Fixed N+1 queries, optimized joins, background jobs for heavy loads.
• Partitioning & Archiving: Time-based archiving, table partitioning for large datasets.
• Transactions & Concurrency: ACID, locking strategies, isolation levels.
• Caching & Scaling: Redis caching, read replicas to reduce DB load.
• Security: Least-privilege DB users, field encryption, audit logs.

Key Projects & Achievements

• ⚡ Real-time Inventory API — boosted speed by ~40%.
• 🔐 Secure authentication for e-commerce — reduced attacks by ~60%.
• 💳 Fintech Payment Gateway Integration — PCI DSS compliant Stripe & Razorpay flows.
• 🛡️ VAPT & Bug Fixing — fixed critical vulnerabilities via penetration testing.

Technical Expertise

Backend: PHP, Laravel (APIs, middleware, queues)
Databases: MySQL (indexing, optimization, replication)
Realtime & Messaging: Firebase, Pusher, cron jobs, workers
Payments: Stripe, Razorpay, invoicing, reconciliation
DevOps: Docker, Jenkins CI/CD pipelines
Security: VAPT, XSS/SQLi/IDOR testing, CSRF, RBAC

Cybersecurity Focus

I practice on labs (TryHackMe, PortSwigger, Metasploit, Nmap) and engage in bug bounty-style pentesting (XSS, SQLi, IDOR, LFI/RFI). Currently pursuing CEH (Certified Ethical Hacker) to strengthen my structured pentesting skills.

Work Philosophy

I believe in Clean Code, Security by Design, and Continuous Learning. Collaboration with frontend developers, UI/UX designers, and stakeholders is central to my approach for building impactful, scalable digital solutions.