Experience

A journey through my career milestones and the impact I've made at each step.

198 views
2+
Years Experience
2
Companies
50+
Projects
10+
Team Members

Software Engineer – Applied AI & Backend Systems

Cyfuture India Pvt Ltd

Current
Jul 2024 - Present
Noida, India
Full-time

Leading development of AI-integrated enterprise systems, RAG-based knowledge platforms, and scalable backend architecture for government and enterprise clients.

Key Achievements

  • Led development of RAG-based enterprise knowledge platform using LangChain, GPT-4, and Qdrant, achieving 80-90% improved search relevance across business-critical documentation
  • Architected modular FastAPI microservices for document parsing, OpenAI embedding generation, and vector indexing with real-time monitoring dashboards
  • Delivered comprehensive ERP modules for PSU clients serving 5,000+ users, covering payroll automation, leasing management, and GST compliance workflows
  • Engineered intelligent CRM automation using OpenCV and GPT-4 for visitor card text extraction, reducing manual data entry by 70%
  • Optimized high-volume SQL queries and MariaDB configurations, reducing dashboard query latency by 30%
  • Built multi-agent workflow orchestration systems for enterprise automation and document processing

Technologies Used

PythonFastAPILangChainGPT-4QdrantOpenCVFrappeMariaDBPostgreSQLRedisDockerKubernetesAWSApache SupersetCeleryRAGMicroservices

Software Developer

Extension Technologies Pvt Ltd

Jul 2023 - Jun 2024
Delhi, India
Full-time

Engineered scalable Flask REST APIs and ERP customizations for high-traffic booking systems and enterprise workflows.

Key Achievements

  • Built scalable Flask REST APIs with multithreading and rate-limiting for real-time booking engine, handling 10,000+ concurrent users with 99.9% uptime
  • Developed real-time synchronization middleware between ERPNext and Zoho systems, reducing frontend latency by 50%
  • Engineered credit allocation engine for 1,000+ users, improving promotion tracking by 20%
  • Integrated WhatsApp Business API, Shopify API, and DocuSign for automated lead synchronization and approval workflows
  • Implemented secure OAuth-based authentication for document signing processes, reducing turnaround time by 30%
  • Customized ERPNext for stock management, product bundles, and CRM flows across 6+ client projects

Technologies Used

PythonFlaskERPNextFrappeMariaDBRedisJavaScriptREST APIsOAuthDocuSign APIWhatsApp Business APIShopify APIMultithreadingRate Limiting

Software Developer Intern

Extension Technologies Pvt Ltd

Nov 2022 - Jun 2023
Delhi, India
Internship

Contributed to backend development, API design, and database optimization for ERP and booking system platforms.

Key Achievements

  • Designed credit-based booking eligibility module with REST endpoints and validation logic
  • Developed file vault and POS modules with secure upload/download capabilities
  • Optimized database queries and schema design for improved performance
  • Participated in client demos, requirement gathering, and feedback implementation
  • Built responsive frontend components using Vue.js and Tailwind CSS
  • Implemented version control workflows and participated in code reviews

Technologies Used

PythonVue.jsFrappeMySQLTailwind CSSREST APIsGitDatabase OptimizationFrontend Development

Ready to work together?

I'm always open to discussing new opportunities and exciting projects. Let's create something amazing together!

© 2025 Sonu Kumar. All rights reserved.