🎓 Full-Stack Engineer | 🔐 Cybersecurity Enthusiast | 📚 Pursuing MBA | 💻 Freelancer

🚀 Freelancing as a Senior Full-Stack Engineer at a start-up while pursuing my MBA, combining technical expertise with business acumen.

I’m an experienced Full-Stack Engineer with over 4 years of expertise in building scalable, secure web applications and systems. My journey in tech has been shaped by hands-on work in fast-paced start-up environments, where I’ve led cross-functional teams, designed robust architectures, and delivered innovative solutions. Currently, I’m freelancing as a Senior Full-Stack Engineer, working on exciting projects while enhancing my skills through an MBA program.

• Backend Development: Nest.js, Node.js, PHP, TypeScript, Python
• Frontend Development: React.js, Next.js, Tailwind CSS, HTML5, jQuery, Ajax, Bootstrap
• API Development: GraphQL, RESTful APIs, Swagger
• System Application Development: Electron.js
• Databases: PostgreSQL, MongoDB, MySQL, Redis
• 3rd Party Integration: Razorpay, Easebuzz, MSG91, Firebase
• Architectural Patterns: Atomic Design Methodology, Microservices, Monorepo Architecture, Modular Design
• Version Controls & Repositories: Git, GitHub, BitBucket
• Other Technologies: IoT Devices(BLE, ESP32/8266, Arduino Uno, MQTT, Raspberry Pi), Network-Attached Storage (NAS), Network Video Recorders (NVR), NeuroStation, WordPress, WooCommerce

• CI/CD: Docker, Docker Compose, Kubernetes
• Cloud Infrastructure: AWS, GCP, Shared Hosting

• Geospatial Tools: Google Earth Pro, CloudCompare
• 3D Reality Modeling: Agisoft Metshape, Bentley iTwin, ContextCapture
• Computer Vision: Roboflow, Yolo, Hugging Face, Google Colab

• Project Management: Agile Methodologies, Project Tracker Development, Software Design Documentation
• Client Communication: Requirements Gathering, Proposal Writing, Quotation Drafting, Pitch Decks

• Penetration Testing: Vulnerability Assessment, Penetration Testing (VAPT), Security Auditing, Network Infrastructure Security
• Digital Forensics: Data Extraction from Damaged HDDs, Log Analysis
• Tools: Nessus, Wireshark, Nmap, Advanced IP Scanner, OWASP ZAP, Burp Suite
• Operating Systems: Windows, Linux(Kali and Ubuntu)

• Gig Jobs India Portal: Leading the development of Web Application and Microservices for a web and mobile platform, and scaling with Docker and Kubernetes.

With a passion for technology and a growing interest in business strategy through my MBA studies, I am constantly looking for opportunities to merge technical leadership with strategic decision-making. My goal is to drive innovation in cutting-edge tech solutions while leading dynamic teams.

• LinkedIn: Sai Kumar Rayavarapu
• GitHub: GitHub Profile
• Email: [email protected]

🌟 Always learning, always coding, and always eager to contribute to open-source projects. Feel free to contact me for freelance opportunities!