Looking for a job

Sumit Rai

@sumitrais74

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Full-stack developer building scalable backend systems and AI/ML-driven apps using React, Spring Boot, Node.js.

India

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What I'm looking for

I am seeking a full-stack or backend role at a collaborative company that values cloud-native, scalable systems, mentorship, and opportunities to work on production deployments.

Software Engineer specializing in AI/ML systems and cloud-native architectures. Experienced in building and scaling LLM-powered applications using LangChain and OpenAI API, delivering measurable improvements in latency, cost efficiency, and user engagement. Strong in backend microservices (Java, Spring Boot) and distributed systems, with a track record of optimizing performance, streamlining data pipelines, and engineering production-ready AI solutions.

Experience

Work history, roles, and key accomplishments

Current

Open source contributor

Current

Freelancing

Sep 2025 - Present (8 months)

Developed REST APIs using Java and Spring Boot for AI systems, reducing processing time by 20% and improving reliability. Designed prompt workflows and integrated OpenAI APIs, automating data classification and reducing manual effort by ~35%. Improved backend scalability and maintainability across services.

AI Software Development

careChain AI

Feb 2025 - Aug 2025 (6 months)

Solved LLM API latency using async LangChain, boosting concurrency by 40% and reducing response delays. Built RAG pipelines with vector DBs, cutting token cost ~25% and improving accuracy. Optimized Spring Boot APIs, reducing response time 30%. Engineered multi-tenant backend, improving data pipeline efficiency by 20%.

React Node JWT Docker Razorpay Git CI CD Generative AI Python

Software Developer Intern

Deltecs Infotech Pvt Ltd

Jun 2024 - Dec 2024 (6 months)

Built an admin console for Wipro Dealer Management and developed REST APIs for Mondelez Recognition App, improving backend response times by enhancing Spring Boot microservices.

JavaScript Spring Boot MySQL REST APIs Microservices Docker

Education

Degrees, certifications, and relevant coursework

Thakur Institute of Management Studies

Master of Computer Applications, Computer Applications

Grade: 8.45/10

Activities and societies: Head of Events; organized tech webinars for 200+ participants.

Master of Computer Applications with coursework in Data Structures & Algorithms, DBMS, and Computer Networks; graduated with CGPA 8.45/10 in Jun 2024.