Software Engineer · Backend & Integrations

Uttam Kumar

I build reliable backend systems, APIs and enterprise integrations.

I work with Java and Spring Boot to turn complex workflows into maintainable services, dependable API contracts, and product-ready platforms.

View My Work Download Resume

GitHub ↗ LinkedIn ↗ UKG Lab ↗

Uttam Kumar, Software Engineer focused on Java backend systems

Java · Spring Boot · APIsBackend engineering for enterprise workflows and SaaS products.

4.5+ years

Software engineering

Backend

Java · Spring Boot

Integrations

REST · OAuth · Webhooks

Product

Multi-tenant SaaS

About

Backend thinking with product context.

I am a Software Engineer focused on backend systems, API design, and enterprise integrations. At Verint and Digit Insurance, I have worked on Java and Spring Boot services where correctness, clear boundaries, and dependable delivery matter.

Alongside professional work, I am building CloudCampus, a multi-tenant school operations platform. That work keeps me close to product decisions, tenant isolation, access control, data modeling, and deployment concerns. I enjoy making complicated workflows easier to reason about and safer to extend.

Focus: Java backend and integration platforms
Strengths: API design, reusable adapters, reliability
Based in: Bengaluru / Remote
Looking for: Software Engineer / Backend Engineer

Experience

Building systems where reliability is part of the feature.

A concise view of the engineering work behind the resume.

Sep 2023 — Present

Verint

Software Engineer · R&D Development

Reusable integration systems for enterprise CX workflows.

Designed backend components that make client-specific integration work easier to deliver, debug, and extend.

Built reusable Java/Spring Boot adapter components, reducing manual integration effort by 70%.
Developed generic adapter logic that improved development efficiency by 50% across similar use cases.
Optimized REST API and service-layer logic, reducing response time by 30%.

Dec 2021 — Sep 2023

Digit Insurance

Software Engineer · Backend

Backend services for insurance workflows and customer communication.

Worked across APIs, document generation, notifications, and data access patterns to simplify operational workflows.

Developed Spring Boot REST APIs that reduced manual business processes by 90%.
Designed PDF generation and Email/SMS notification modules for policy workflows.
Optimized MySQL schema and backend data access patterns for maintainability and scale.

Selected Work

Projects that show how I think and build.

A focused set of backend, platform, and product work. The full project index includes the supporting details.

Flagship SaaSActive development

CloudCampus

Multi-tenant school operations SaaS with role-based access, tenant isolation, academic workflows, and deployment-oriented architecture.

Spring Boot backend with JWT/RBAC and tenant-aware workflows.
React portal, PostgreSQL/Flyway data foundations, Docker and GitHub Actions.

View Case Study →GitHub ↗

BackendComplete

BlogHub REST API

A production-style blogging backend designed around secure access, content workflows, and operational visibility.

JWT lifecycle, refresh-token rotation, Redis, Flyway, and role-based access.
Keyset pagination, nested comments, OpenAPI, Actuator, Docker, and CI.

View Project →GitHub ↗

Full stackComplete

ParkSmart

Parking management platform covering booking, slot selection, billing, payment checkout, and event-driven workflows.

Spring Boot, React, PostgreSQL, Redis, Kafka, and Stripe integration.
JWT auth, admin APIs, availability logic, and Docker Compose infrastructure.

View Project →GitHub ↗

Explore all selected work →

Engineering Expertise

A focused toolkit for dependable backend work.

Backend Engineering

Java
Spring Boot
Spring MVC
Spring Security
JPA / Hibernate

API & Integration

REST APIs
OAuth / JWT
Webhooks
Enterprise integrations
API reliability

Architecture

Microservices
Multi-tenant SaaS
System design
LLD / HLD
Modular architecture

Data

PostgreSQL
MySQL
SQL
Transactions
Indexing

Engineering Platform

Docker
GitHub Actions
CI/CD
Maven
AWS fundamentals

Featured Case Study

CloudCampus

A multi-tenant School ERP SaaS platform for schools, trusts, and multi-campus organizations.

Designing the boundaries behind a complex product.

CloudCampus brings tenant onboarding, role-based access, school isolation, academic operations, attendance, homework, exams, fees, and traceable workflows into one product direction.

Read the full case study →GitHub ↗

CloudCampus school admin dashboard showing operational metrics and school workflows

Writing

Engineering Notes

Notes on the decisions, boundaries, and tradeoffs behind backend systems.

Multi-tenancy

How I Designed Multi-Tenancy for CloudCampus

Tenant and school boundaries, server-owned access context, and the tradeoffs behind a SaaS model.

Read note →

Spring Security

Designing Secure Spring Boot APIs with JWT and RBAC

Authentication, authorization, validation, token lifecycle, and audit-aware API design.

Read note →

Integrations

Lessons from Building Enterprise Integration Systems

Reusable adapters, edge cases, observability, and reliability in integration-heavy workflows.

Read note →

Beyond the portfolio: UKG Lab

Learn. Build. Share. Technical notes, experiments, and broader learning work.

Visit UKG Lab ↗

Education & Continuous Learning

Strong fundamentals, kept in perspective.

2020

IIT Guwahati

B.Tech, Electronics and Communication Engineering

Foundations in mathematics, systems, problem solving, data structures, computer networks, and artificial intelligence.

Professional learning

Scaler Academy

Advanced DSA, LLD, HLD/System Design, backend engineering, DevOps, and data engineering coursework.

View profile ↗

Problem solving

Competitive Programming

810+ problems solved · highest rating 1569

One concise proof point from ongoing practice.

View CodeChef ↗

Resume

See the full engineering story.

A focused resume for Java, Spring Boot, backend systems, enterprise integrations, and product-building experience.

Download PDF View Resume

Let’s Connect

Building reliable software is what I do.

Looking for a Java/backend engineer with enterprise integration and product-building experience? I’d be glad to talk.

Email Me LinkedIn ↗