Open to opportunities

Amit Kumar Singh

@amitkumarsingh5

Message

I build high-throughput Node.js backend systems, distributed services, and AdTech infrastructure.

Zimbabwe

Message

What I'm looking for

I'm open to relocation and looking to build scalable production backend systems, particularly in Node.js, distributed microservices, AdTech infrastructure, performance optimization, and reliable API delivery.

At Verismart.ai, I own end-to-end backend delivery for a production AdTech platform, building Node.js and Express APIs for campaign management, reporting, and operational workflows. I designed an asynchronous BullMQ pipeline that reduced synchronous blocking by 40–45% and enabled horizontal scaling.

I improved PostgreSQL query execution times by 30–35% through schema redesign, composite indexes, and analytical query rewrites. I also reduced peak-load p95 API latency from roughly 900ms to 350ms using caching, connection pooling, and async I/O improvements.

Previously, I built backend services, REST APIs, RBAC, and React component libraries at Adapt Ideations, and delivered Node.js, Express.js, and Spring Boot microservices for international client engagements at L&T Technology Services. I enjoy improving production reliability through observability, zero-downtime deployments, code reviews, and mentoring.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer

Current

Verismart.ai

Apr 2025 - Present (1 year 4 months)

Owns end-to-end backend feature delivery for a production AdTech platform, including system design, API contracts, deployment, and monitoring. Architected high-throughput REST APIs and reduced p95 latency by ~60% through caching and async improvements.

REST APIs Microservices BullMQ PostgreSQL Redis System Design Performance Optimization CI CD Agile Scrum

Full Stack Developer

Adapt Ideations Pvt Ltd

Apr 2024 - Oct 2024 (6 months)

Designed and implemented modular backend services in Node.js/Express with authentication, authorization, and core business logic. Built production REST APIs with centralized error handling and request validation, and implemented RBAC for secure endpoint access.

Node REST APIs RBAC PostgreSQL MongoDB Material UI Caching Query Optimization

Software Engineer

L&T Technology Services

Oct 2021 - Jan 2024 (2 years 3 months)

Built enterprise backend services using Node.js, Express.js, and Spring Boot within microservices architectures across international client engagements. Designed and delivered RESTful APIs with a focus on scalability and maintainability, and improved backend performance through profiling and database tuning.

Node Spring Boot Microservices REST APIs PostgreSQL MySQL Performance Optimization Agile Scrum