Sajjad I.

I bring 5+ years of experience building scalable web and mobile applications using Flutter, React Native, React.js, Node.js, TypeScript, Firebase, Supabase, AWS, and modern cloud technologies. I have contributed to products used by millions of users, delivering clean, maintainable, and high-performance solutions from concept to production. Beyond development, I leverage AI tools to accelerate implementation, debugging, documentation, testing, and problem-solving without compromising code quality. I communicate effectively, take ownership of projects, meet deadlines, and enjoy collaborating with cross-functional teams. Whether working independently or in an agile environment, my focus is on building reliable, user-centered products that create measurable business value.

• Software Engineering Intern – Cloud Security

  Techlogix (Microsoft Partner) · 2024 — 2024
  Developed an automated log aggregation and alerting pipeline utilizing Python and Azure Monitor. Contributed to the design of a role-based access control (RBAC) module for an internal compliance platform, implementing STRIDE threat modeling and defense-in-depth principles. Built and maintained CI/CD pipelines via Azure DevOps for the automated testing and deployment of microservices. Participated in live-site incident response drills with security and operations teams to address service degradation. Authored internal documentation on secure coding practices for team use in subsequent projects.

• Undergraduate Research Assistant – Systems & Security

  COMSATS University Islamabad, Sahiwal Campus · 2023 — 2024
  Conducted research on intrusion detection techniques in distributed systems, focusing on machine learning-based anomaly detection methods for cloud-native security. Developed a prototype network traffic analyzer in Python that effectively detected 92% of simulated DDoS attack patterns. Presented research findings on security event collection and detection engineering at the university's annual Computer Science symposium.

• Freelance Full-Stack Developer

  Self-Employed / Upwork · 2023 — Present
  Designed and deployed over 10 production web applications for international clients with Node.js, React, and PostgreSQL on AWS, emphasizing reliability and observability. Executed end-to-end encryption, secure authentication using OAuth 2.0 and JWT, and input validation across client projects, maintaining zero security incidents after launch. Established monitoring and alerting dashboards using Grafana and the ELK Stack, ensuring clients achieved 99.9% service availability SLAs. Managed the complete DevOps lifecycle, covering containerization with Docker and orchestration with Kubernetes, alongside automated deployments via GitHub Actions. Collaborated asynchronously with multidisciplinary stakeholders to ensure timely project delivery.

• B.S. Computer Science

  COMSATS University Islamabad – Sahiwal Campus · 2022 — 2026