Yogesh Kumar

Python Full Stack Developer with 4.5+ years of experience building scalable web applications using Python, Django, JavaScript, PostgreSQL, and AWS. Delivered 12+ production-grade applications, optimized performance by 60%, and led end-to-end development from architecture to AWS deployment.

Senior Web Developer - Johnnette Technologies Pvt. Ltd. - Noida, UP

(2022-01)

• Developed and deployed 12+ production-grade applications using JavaScript, Python, Django, AWS and PostgreSQL.
• Architected 12+ production-grade PWAs with offline support, improving scalability, accessibility, and user experience.
• Directed the end-to-end Software Development Life Cycle, from requirement gathering to production deployment.
• Designed and implemented secure RESTful APIs and robust backend services, enabling scalable and maintainable enterprise applications.
• Engineered secure RESTful APIs and integrated two critical payment gateways, directly enabling 90% transaction success rates.
• Optimized application performance by 60% through backend refactoring, query tuning, and code optimization.
• Spearheaded the optimization of PostgreSQL queries, reducing average response times by 40% and enhancing system reliability for critical applications.
• Increased organic traffic by 35% through technical SEO, performance optimization, and search engine best practices.
• Spearheaded AWS cloud infrastructure management, encompassing deployments, hosting, monitoring, and production maintenance, reducing infrastructure costs by 20% and ensuring 99.9% uptime.
• Mentored 10+ junior developers through code reviews, technical guidance, and engineering best practices.

Bachelor of Computer Applications - BCA - Maharshi Dayanand University, Rohtak, Haryana (2018 - 2021)