Er. Arupam Sengupta

Results-driven Senior Technical Lead with 10+ years of software engineering experience, specialising in enterprise backend development, Angular-based frontends, and cloud-native architectures. Holds an M.Tech (Executive) from IIT Jammu, providing a strong grounding in AI/ML principles including Large Language Model integration and Retrieval-Augmented Generation (RAG) patterns. Proven track record building mission-critical platforms at global organisations (EY, Infosys, Lexmark), working with LLMs (OpenAI, Claude, Llama), and delivering production-grade solutions on Azure/AWS using Docker and Kubernetes.

Senior Technical Lead - Ernst & Young GDS - Kolkata

(2022-05)

• Spearheading development of EY's internal Digital Factory platform — a mission-critical backend using C#.NET / Spring-equivalent microservices, Angular 15+, and TypeScript, serving global enterprise teams.
• Championed adoption of LLM-powered features (OpenAI API integration) within the platform for intelligent document analysis and agentic workflow automation using ReAct patterns.
• Drove code quality initiatives using SonarQube and Veracode; reduced critical vulnerability count by 60% over two release cycles.
• Led cross-functional Agile squads, mentoring 5+ engineers and coordinating sprint ceremonies across distributed teams.

Software Engineer - Clinisys (formerly Sunquest Information Systems) - Kolkata

(2021-08 - 2022-01)

• Contributed to Sunquest WorldCare, a mission-critical laboratory informatics platform, focusing on Angular UI enhancements and C#.NET backend services.
• Reduced open defect count by 30% through targeted quality improvement and test-driven development practices.
• Collaborated with QA and product teams to deliver regulatory-compliant feature enhancements within tight release windows.

Software Engineering Professional - Lexmark International - Kolkata

(2019-09 - 2021-08)

• Developed and maintained the Publishing Platform for Retail — a large-scale Angular +.NET application handling high-throughput content workflows.
• Built reusable Angular component libraries with RxJS-driven reactive data flows, improving front-end performance by 25%.
• Integrated Jenkins CI/CD pipelines and static analysis (Coverity, Blackduck) to enforce security and quality gates in a DevOps culture.

System Engineer → Specialist Programmer - Infosys - Mysore · Chennai · Bangalore · Hyderabad · Bhubaneswar

(2015-07 - 2019-09)

Delivered full-stack solutions for global clients across BFSI and retail sectors, gaining broad exposure to enterprise-grade architectures and distributed systems.

• Built Angular / AngularJS SPAs with TypeScript; developed Office.js add-ins for productivity automation.
• Acquired foundational knowledge of UNIX shell scripting, SQL, and enterprise integration patterns supporting large-scale backend systems.

Masters of Technology — Executive (M. Tech) - AI/ML, Deep Learning, NLP, Distributed Systems - Indian Institute of Technology (IIT) Jammu (2022-10 - 2024-11)

Bachelor of Technology (B. Tech) - Computer Science - Institute of Engineering and Management, Kolkata (2011-08 - 2015-06)