Headline

Application Engineer @ FinBox | Software Development Engineer | Python, Golang, TypeScript, React.js, FastAPI, Django | REST & GraphQL APIs | System Design

About

AI Application Engineer | Generative AI Engineer | Full Stack Engineer I build production-grade AI applications, scalable backend systems, and modern full-stack products. With 2+ years of experience across fintech and software engineering, I specialize in transforming business problems into intelligent solutions using Large Language Models (LLMs), AI agents, and modern web technologies. My expertise includes Generative AI, LLM Integration, Prompt Engineering, Context Engineering, Retrieval-Augmented Generation (RAG), Semantic Search, Vector Databases, AI Agents, Function Calling, Tool Calling, Structured Outputs, LangChain, LangGraph, MCP, OpenAI, Claude, Gemini, and production AI systems with guardrails and streaming. On the engineering side, I work extensively with Python, FastAPI, React.js, Next.js, TypeScript, PHP, GraphQL, REST APIs, PostgreSQL, MySQL, Supabase, and scalable API architectures. I've integrated 50+ third-party APIs, built enterprise-grade applications, optimized backend performance, and delivered solutions used by financial institutions and businesses in production. Currently focused on building LLM-native products, AI-powered automation systems, intelligent search and recommendation engines, multi-agent workflows, and scalable AI infrastructure. Open to opportunities in Generative AI Engineering, AI Application Engineering, AI Integration Engineering, AI Software Engineering, and Full Stack AI Development.

Location

Bengaluru

AI stack

antigravity

claude

mcp

n8n

openai

OpenRouter

Work experience

Application Engineer at FinBox, Sep 2025 - Present · 1 yr 1 mo, Bengaluru, Karnataka, India, Application Engineer - FinTech Solutions | API Integration & Database Optimization Specialist Responsibilities: • End-to-end API integration management from sandbox setup to production go-live • REST API development and JSON data validation using Postman and custom tools • SQL query optimization and database performance tuning • Technical documentation and API specification creation • Client-facing technical support and implementation guidance • SaaS integration configuration and workflow design Technical Expertise: - REST API development and integration - SQL database optimization - JSON data handling and validation - API testing and validation tools (Postman) - FinTech/Lending domain knowledge - SaaS platform integrations Impact & Achievements: ✓ Successfully integrated multiple third-party APIs improving system interoperability ✓ Optimized database queries reducing response time by 30%+ ✓ Documented API specifications for seamless team collaboration ✓ Supported clients through complex integration processes, achieving 95%+ satisfaction rate

Associate Developer at Cronbay Technologies, Sep 2025 - Oct 2025 · 2 mos, Bengaluru, Karnataka, India

Jr. Full Stack Developer at Cronbay Technologies, May 2024 - Sep 2025 · 1 yr 5 mos, On-site, Jr. Full Stack Developer | Web Application Development & UI/UX Implementation Responsibilities: • Full-stack web application development using MERN stack (MongoDB, Express, React, Node.js) • Front-end interface development with responsive design using HTML5, CSS3, JavaScript ES6+ • Back-end system architecture and API development with Node.js and Express • Database design and optimization with MySQL and MongoDB • Real-time application features and state management with React • Continuous Integration/Continuous Delivery (CI/CD) implementation and deployment • Collaborated with cross-functional teams on feature development and debugging Technical Stack: - Frontend: React.js, HTML5, CSS3, JavaScript ES6+, Responsive Web Design, Tailwind CSS - Backend: Node.js, Express, PHP, Python - Database: MySQL, MongoDB - DevOps: CI/CD Pipelines, Git Version Control - Tools: Postman, Docker basics Key Achievements: ✓ Developed responsive and user-friendly web applications with React.js and modern UI frameworks ✓ Implemented robust backend systems with Node.js and Express for scalable APIs ✓ Designed and optimized databases improving application performance by 25%+ ✓ Deployed applications using CI/CD pipelines reducing deployment time by 40% ✓ Contributed to 15+ successfully launched projects in fintech and enterprise sectors

Education

Bachelor of Engineering - BE, Computer Science, HKBK Group of Institutions

Diploma of Education, Artificial Intelligence, International Institute of Information Technology Bangalore

Public links

github: https://github.com/ChetanTiwari195