Uttam Kumar | Java Backend Developer

Recruiter snapshot

Why recruiters should notice me.

A backend-first profile with academic signal, product ownership, and measurable enterprise delivery.

Backend Depth

4.5+ years building Java/Spring Boot APIs, enterprise integrations, and workflow automation systems.

IIT + Scaler Foundation

IIT Guwahati graduate with Scaler Academy coursework across Advanced DSA, LLD, HLD/System Design, Backend LLD, DevOps, Data Engineering, Product, and Full-stack fundamentals.

Product Ownership

Founder of CloudCampus, a multi-tenant School ERP SaaS platform under active development.

Business Impact

Delivered backend automation and API improvements that reduced manual work and improved delivery efficiency.

Competitive Coding Proof

Active CodeChef profile with 810 problems solved, 25 contests, Problem Solver Gold badge, Contest Contender Silver badge, and highest rating 1569.

Impact numbers are based on internal project outcomes and delivery observations; confidential implementation details are omitted.

Professional summary

Backend engineer with enterprise execution and SaaS product ownership.

I design and build backend systems with Java, Spring Boot, REST APIs, microservices, and relational databases. My work spans enterprise CX integration systems at Verint and insurance workflow platforms at Digit Insurance.

I focus on API design, reusable backend components, validation, exception handling, logging, debugging, database access patterns, and maintainable service architecture.

Current focus

Building CloudCampus as a serious multi-tenant School ERP SaaS platform with tenant onboarding, role-based access, secure authentication, school isolation, audit logging, and deployment-oriented documentation.

Experience

SDE-2 backend impact across enterprise and product environments.

Software Engineer - R&D - Development Verint · Sep 2023 - Present · Bengaluru

Designed reusable Java/Spring Boot integration adapters for enterprise CX workflows, reducing repeated client-specific implementation effort by 50% and manual integration operations by 70%.
Built modular backend automation flows for integration-heavy enterprise workflows with clear validation, edge-case handling, and service-level debugging support.
Optimized REST API and service-layer logic, improving response time by 30% while strengthening reliability for business-critical integration paths.
Improved maintainability through reusable adapter design, logging improvements, and safer extension patterns for client-specific workflows.

Software Engineer (Backend) Digit Insurance · Dec 2021 - Sep 2023 · Bengaluru

Built and optimized Spring Boot REST APIs for insurance policy and claims workflows, reducing manual document handling by 90% and improving policy issuance reliability.
Designed PDF generation and Email/SMS notification modules that improved document processing and customer communication workflows.
Optimized MySQL schema and backend data access patterns to improve performance, scalability, and maintainability of core services.
Refactored validation, exception handling, API structure, and code organization to support safer feature extension.

Flagship case study

CloudCampus - AI-ready Multi-Tenant School ERP SaaS.

CloudCampus is an AI-ready multi-tenant School ERP SaaS platform for schools, trusts, and multi-campus organizations. It includes tenant onboarding, role-based access, secure authentication, school isolation, student/staff workflows, academic setup, attendance, homework, exams, fees, notices, reports, audit logging, and deployment-oriented documentation.

Problem

Schools need centralized digital workflows for academics, staff, students, parents, fees, communication, documents, and administration. Manual operations make reporting, access control, and multi-campus expansion difficult.

Solution

CloudCampus models schools as a multi-tenant SaaS platform with role-specific portals, secure onboarding, server-derived tenant/school context, API-first workflows, and controlled staging deployment documentation.

My Role

Founder, backend engineer, and product engineer. I own product scope, backend architecture, API design, tenant isolation decisions, deployment readiness, and roadmap planning.

Business Value

CloudCampus targets school operations digitization: safer role access, cleaner academic/finance workflows, parent/student visibility, and an expansion path for multi-school organizations.

Backend Architecture

Presented from visible repo evidence: Java/Spring Boot backend, REST APIs, authentication and authorization, role-based access, multi-tenant design, database migrations, tenant/school isolation, audit logging, deployment docs, Docker/Nginx assets, and GitHub Actions workflows.

BackendJava 21, Spring Boot, REST APIs, modular domains.

IdentityJWT sessions, refresh lifecycle, MFA challenge flow, role-based access.

TenancyTenant and school hierarchy with server-side access context.

DataPostgreSQL-oriented schema managed with Flyway migrations and audit records.

DeliveryDocker, Nginx, GitHub Actions, EC2 runbooks, health checks.

AI foundationEntitlement, audit, and scoped knowledge retrieval foundations.

Internal demo Ready for local and controlled staging-style demos.

8 roles Super Admin, Tenant Admin, School Admin, Teacher, Finance, Staff, Parent, Student.

Honest status Not presented as paid-customer production software.

Architecture Diagram

CloudCampus is designed as a multi-tenant School ERP SaaS with role-based access, tenant-aware request handling, secure authentication, audit logging, and deployment-ready infrastructure.

Browser / MobileRole-specific school ERP access for admins, teachers, parents, and students.

FrontendReact/Vite web UI and mobile-ready app shell for role-aware workflows.

Nginx / HTTPSReverse proxy, TLS-ready edge, local/staging compose path, health routing.

Spring Boot APIControllers, services, validation, exception handling, and domain modules.

secure tenant-aware request handling

JWT Authentication + RBACAccess tokens, refresh lifecycle, MFA challenge foundation, and role checks.

Tenant Context ResolverServer-derived tenant and school context instead of trusted request parameters.

PostgreSQLTenant/school-scoped schema, Flyway migrations, reporting foundations.

Redis / CacheCache/session-oriented foundation for future scale and faster repeated reads.

data, proof, and operations layer

Object StorageRoadmap for documents, school assets, and uploaded resources.

Audit LogsOnboarding, invitation, session, role, and school mutation audit records.

Monitoring / BackupHealth checks, alerting roadmap, backup/restore proof before pilot usage.

CloudCampus System Design

Scale Target

Long-term architecture target documented for 100,000+ schools and millions of users; current state is local/internal demo and controlled staging validation.

Tenant Isolation

Tenant and school boundaries are explicit. Access context is resolved server-side through authenticated user grants and school-scoped guards.

Auth / RBAC

JWT access tokens, refresh lifecycle, MFA challenge foundation, BCrypt password hashing, and role-aware protected routes across eight roles.

Audit Logging

Sensitive flows such as onboarding, invitations, session events, school mutations, and role changes are designed for audit records without raw secrets.

Database

PostgreSQL-oriented schema with Flyway migrations, tenant/school-scoped tables, report/export foundations, and transactional outbox groundwork.

Deployment

Docker, Docker Compose, Nginx, GitHub Actions, EC2 staging runbooks, rollback guidance, and health/readiness endpoints are present.

Backups

Local PostgreSQL backup/restore drill scripts exist. Hosted backup/restore proof is still a before-pilot roadmap item.

Monitoring Roadmap

Prometheus alert configuration exists as a foundation. Stable hosted monitoring, alerts, logs, and production dashboards remain pending.

Technical Highlights

Current Status

Honest status: local/internal demo ready and staging-ready for controlled deployment recreation. Not yet positioned as paid-customer production software.

Product Screenshots

Real CloudCampus UI captures from the authenticated local app using seeded demo data. They are proof of implemented local/staging demo flows, not production customer screenshots.

Tenant Onboarding

Multi-tenant school setup with tenant isolation and admin onboarding.

School Admin Dashboard

Role-based admin view for managing academic and operational workflows.

Teacher Workflow

Attendance, homework, and classroom operations for teachers.

CloudCampus parent portal showing linked child and parent workspace

Parent / Student Portal

Academic visibility, attendance, homework, results, and communication.

GitHub README API Docs Architecture Discuss CloudCampus

GitHub-selected work

Portfolio-worthy repositories, grouped for recruiters.

Synced against the public GitHub profile uttamkumar37. Featured work prioritizes Java, Spring Boot, backend depth, full-stack delivery, Docker, databases, authentication, and visible README evidence.

9 public owner repos checked

5 featured portfolio projects

0 verified live demos linked

4 support or hidden repos excluded

Featured Projects

Only the strongest public repositories appear here. Small profile, portfolio, product-site, and prep-only repos are kept out of the featured grid.

CloudCampus

In Progress

AI-ready multi-tenant School ERP SaaS for schools, trusts, and multi-campus organizations.

Category: Featured / Full Stack / SaaS backend.
Key highlights: Multi-tenancy, JWT/RBAC, tenant onboarding, audit logging, PostgreSQL/Flyway, Docker/Nginx, GitHub Actions, role-specific portals.
Implemented vs planned: Controlled staging/internal demo foundations are documented. Payment gateway, object storage, monitoring, hosted backups, and pilot onboarding remain roadmap items.

Case Study GitHub README API Docs Architecture Demo video in progress

BlogHub REST API

Backend

Production-style blogging backend with Spring Boot 3.5, Java 17, MySQL, Redis, Flyway, Docker, OpenAPI, and React frontend assets.

JWT access tokens, refresh-token rotation, Redis blacklist, logout, rate-limited auth, and role-based access.
Flyway migrations, keyset pagination, nested comments, OpenAPI docs, Actuator/Prometheus, Docker Compose, and GitHub Actions pipeline.
No live demo is linked in the README, so it is presented as a backend portfolio repository.

GitHub README API Docs Architecture No public demo linked

ParkSmart Parking Lot Management

Full Stack

Parking lot application with Spring Boot backend, React frontend, PostgreSQL, Redis caching, Kafka booking events, Stripe checkout, and admin APIs.

JWT authentication, admin authorization, visual slot selection, booking/exit flow, billing, and cache eviction on park/exit.
Docker Compose covers PostgreSQL, Redis, Kafka/Zookeeper, backend, and frontend; README lists backend unit/controller tests.
No public hosted demo is linked, so external payment/notification behavior is described from README evidence only.

GitHub README API + Architecture No public demo linked

Realtime Tic-Tac-Toe Platform

Full Stack

Full-stack portfolio app with frontend demo mode plus local/separate Spring Boot backend for REST, WebSocket/STOMP, JWT, Redis, and MySQL.

Multiplayer room flow, bot mode with minimax, protected REST endpoints, WebSocket game updates, match history, and player stats.
README states the public frontend version runs frontend-only while the backend remains in the repo for local/separate deployment.
The README-listed custom domain did not resolve during validation, so no live demo link is shown.

GitHub README Architecture API Docs WebSocket Demo unavailable in validation

Task Manager

Full Stack

Full-stack task workflow app with Spring Boot, React/Vite, PostgreSQL, JWT authentication, Docker Compose, and CI.

Register/login, owner-scoped task APIs, status and priority workflows, overdue detection, search/filtering, and modern React dashboard.
README documents Docker Compose, backend tests, frontend build, and Compose validation.
The GitHub homepage URL returned 404 during validation, so no live demo link is shown.
Kept below CloudCampus because it is smaller and earlier practice, but still useful as deployed full-stack evidence.

GitHub README Backend README Demo unavailable in validation

Backend Projects

Backend-heavy repositories with security, data, API design, caching, deployment, and reliability signals.

BlogHub REST API

Backend

Best pure backend signal: auth lifecycle, Redis, Flyway, OpenAPI, observability, Docker, and CI/CD.

GitHub Features

ParkSmart Backend

Backend

Strong system-design practice: slot allocation, booking events, payment checkout, cache invalidation, admin APIs, and Dockerized infra.

GitHub API Reference

Full-Stack Projects

React plus Spring Boot projects. Live demos are linked only when the target URL is verified.

CloudCampus

Full Stack

React/Vite web app, Expo mobile shell, Spring Boot API, PostgreSQL, Docker, Nginx, and role-aware portals.

Case Study GitHub

Realtime Tic-Tac-Toe

Full Stack

React/TypeScript public demo with Spring Boot backend kept in the repo for local or separate deployment.

GitHub Demo unavailable in validation

Task Manager

Full Stack

Spring Boot, React, PostgreSQL, JWT, Docker Compose, and CI; useful deployed evidence, not flagship positioning.

GitHub Demo unavailable in validation

Learning / Practice Repositories

Useful for showing discipline, but intentionally separated from product and backend portfolio work.

FAANG Backend 6-Month Prep

Learning Project

Java backend preparation repository covering Java, DSA, SQL, system design, low-level design, debugging, cloud/Kubernetes, and interview tracking.

GitHub README

Archived / Hidden

These repositories are intentionally not shown as project cards because they are support, profile, duplicate, tiny, or site infrastructure repos.

Hidden From Featured

uttam-portfolio-site is this website, uttamkumar37 is the profile README, and mycloudcampus-product-site is a tiny support site. They stay out of the main portfolio grid.

Not featured Quality over quantity

Skills

Backend Engineering Stack.

A focused stack for Java backend systems, enterprise APIs, and multi-tenant SaaS platforms.

Core Backend

Java
Spring Boot
Spring MVC
Spring Security
Hibernate / JPA

Architecture

Microservices
REST API Design
Multi-Tenant SaaS
HLD / LLD
System Design

Algorithms / CS

Advanced DSA
Algorithm Design
Data Structures
CodeChef: 810 solved
25 contests
Highest rating 1569

Data

MySQL
PostgreSQL
Transactions
Indexing
Query Optimization

Cloud / DevOps

AWS
Docker
GitHub Actions
CI/CD
Maven

Quality

JUnit
Integration Testing
Logging
Debugging
API Validation

Engineering notes

Writing that proves backend judgment.

Technical articles that explain the design tradeoffs behind multi-tenancy, Spring Boot security, and enterprise integration adapters.

How I Designed Multi-Tenancy for CloudCampus

Tenant and school boundaries, access context, role workflows, and the tradeoffs behind a school ERP SaaS model.

Read article

Designing Secure Spring Boot APIs with JWT and RBAC

Practical notes on authentication, authorization, token lifecycle, role checks, validation, and audit-aware API design.

Read article

Lessons from Building Enterprise Integration Systems

Reusable adapters, integration edge cases, observability, debugging, reliability, and delivery speed in enterprise workflows.

Read article

Education

Academic foundation.

Indian Institute of Technology, Guwahati

B.Tech, Electronics and Communication Engineering

Completed B.Tech in Electronics and Communication Engineering with strong foundations in mathematics, system analysis, and problem solving. In addition to core electronics subjects, completed coursework aligned with computer science fundamentals and artificial intelligence.

Relevant coursework:

Data Structures and Algorithms
Fundamentals of Artificial Intelligence
Computer Vision
Probability and Random Processes
Advanced Topics in Random Processes
Digital Signal Processing
Computer Networks

Scaler Academy

Completed classes across a 19-module computer science and backend curriculum covering Advanced DSA, OOD/LLD, HLD/System Design, Backend LLD, DevOps, Data Engineering, Product Management, JavaScript, and UI/UX fundamentals. View profile.

CodeChef Practice

Public profile shows 810 problems solved, 25 contests, current 1-star rating 1240, highest rating 1569, Problem Solver Gold, Contest Contender Silver, and Daily Streak Bronze. View profile.

Interview Readiness

Cleared Scaler mock interviews in Advanced Algorithms and Backend LLD, with structured practice across data structures, algorithms, system design, and practical backend engineering.

Applied CS Coverage

Strengthened fundamentals across design patterns, practical software engineering, DevOps, competitive programming, full-stack LLD, data engineering, and product thinking.

Resume

Recruiter-ready backend resume.

Uttam Kumar - Java Backend Engineer

Focused resume for Java, Spring Boot, Microservices, REST APIs, enterprise integrations, and CloudCampus founder experience.

Download PDF Open Resume

Contact

Hiring for Java Backend, SDE-2, or SaaS backend work?

Reach out for backend roles, CloudCampus collaboration, Java/Spring Boot consulting, or system design and API architecture discussions.

Java Backend / SDE-2 Roles

Spring Boot, APIs, microservices, database design, debugging, and delivery ownership.

CloudCampus / SaaS Collaboration

Discuss school ERP workflows, pilot opportunities, SaaS architecture, or product partnerships.

Spring Boot Consulting

API architecture, authentication, modular backend design, Docker, and CI/CD improvements.

System Design Discussion

Multi-tenancy, role-based access, integration frameworks, and backend reliability tradeoffs.

Email Me Download Resume LinkedIn GitHub CodeChef