Amit Singh Tomar

Backend Developer with 5.4 years of experience building Go and Node.js services for fintech lending, banking ETL, and business messaging at Heymarket, Flexiloans, and Tata Consultancy Services. Reduced API response times by 30% and scaled WebSocket messaging to 50,000+ concurrent users on AWS/Kubernetes with Kafka. Also experienced in building GenAI-based solutions, including AI agents for automation, RAG, AI evaluation/Testing and Prompt Injection

Backend Developer at HeyMarket (2025-01 – Present)

• Optimized GoLang backend services and APIs, reducing response times by 30% and improving real-time messaging throughput.
• Engineered WebSocket-based real-time messaging to support 50,000+ concurrent users with low-latency delivery.
• Tuned PostgreSQL using SQL query optimization and indexing strategies, cutting execution time by 30% and accelerating message delivery.
• Architected an AI scheduling agent using Claude with tool use/function calling, integrated into Salesforce and heymarket CRM workflows to autonomously coordinate and book client calls
• Deployed AI agents for sentiment analysis, intent detection, and automated replies to improve response accuracy and reduce manual support workload by 30%.
• Developed a New Relic MCP log/APM analyzer agent to identify root causes, suggest fixes, and recommend performance improvements.
• Built RAG-based AI workflows with vector search, reranking, and context orchestration to improve retrieval accuracy and reduce hallucinations in production AI systems.
• Developed AI evaluation pipelines for prompt quality, grounding accuracy, response consistency, and hallucination detection to improve reliability of LLM-powered features using Deepeval

Software Development Engineer 2 at Flexiloans (2022-08 – 2025-01)

• Built backend services in NodeJS, TypeScript, and GoLang to support core lending workflows.
• Implemented a robust RESTful API for retrieving customer credit information, contributing to an 18% increase in lead generation.
• Launched a Customer Dashboard and supporting backend APIs, reducing customer queries by 30% for 10,000+ active users.
• Designed and shipped an Auto Reject capability for applications, contributing to an 11% increase in lead generation.
• Partnered with SETU and Perfios to integrate vendor APIs for reliable data exchange, processing 100,000+ data points monthly.
• Maintained and enhanced high-performance GoLang backend services, emphasizing reliability and maintainability.
• Automated deployment processes with Kubernetes, reducing deployment time and improving consistency across environments.
• Established monitoring integrations with DataDog and AWS EventBridge to maintain platform stability and performance.
• Administered Kafka clusters for real-time event streaming and message queuing, improving distributed service communication.
• Refactored existing components to align with the new backend architecture, reducing technical debt by 25%.
• Migrated modules to NextJS to reduce complexity and improve readability, accelerating the development cycle by 30%

System Engineer at Tata Consultancy Services (2020-10 – 2022-06)

• Analyzed, designed, developed, and tested ETL pipelines for banking projects across Home Loan and Home Savings portfolios.
• Extended the Consumer Loan portfolio within existing ETL pipelines, ensuring data accuracy and scalability.
• Created high-performance GoLang services and utilities for ETL orchestration, data validation, and workflow automation.
• Produced RESTful APIs and GoLang microservices to trigger ETL jobs, monitor pipeline health, and expose processing metrics.

Bachelor's in Computer Science & Engineering – AKTU (2020-04)

Intermediate – CSHP Public School (2016-04)