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Available for backend & full-stack projects

Hi, I'm Deepak Kumar

Senior Software Developer · Java · Spring Boot · Microservices · Cloud

I design and build scalable, secure, high-performance systems with Java, Spring Boot, and cloud — architecting robust backends and delivering end-to-end, production-ready solutions for real-world business needs.

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Pune, Maharashtra, India

About Me

I build backends that scale — and outcomes that matter

Senior backend engineer focused on systems that stay fast, reliable, and maintainable as they grow.

I'm Deepak — a Senior Software Developer with 4+ years building scalable, high-performance enterprise systems in Java and Spring Boot. I care as much about the business outcome as the code behind it.

My core strength is backend architecture: microservices, secure REST & GraphQL APIs, and finely-tuned databases across SQL and NoSQL — wired to the platforms products depend on, from SAP and payments to storage and payroll.

I've shipped across Oil & Gas, healthcare, hospitality, and HR — leading modules, mentoring engineers, and championing clean, maintainable code from architecture through production.

0+

Years building production systems

0+

Systems & services shipped

0+

Industry domains delivered across

~0%

Peak performance boost achieved

What I Build

From backend architecture to shipped product

Enterprise Backend Systems

High-performance APIs, microservices, and database-driven platforms built for scale, reliability, and secure business-critical workflows.

Business & Integrations

Payments, file storage, payroll, and enterprise (SAP, OpenText) integrations that streamline operations and reduce manual errors.

Full-Stack Solutions

Backend-first systems designed for clean API consumption and pragmatic frontend collaboration into end-to-end, production-ready products.

Smart Automation & AI

Intelligent workflows and automation using Spring AI and data-driven techniques to improve efficiency and user experience.

Technical Skills

The stack I work with

A backend-heavy toolkit spanning frameworks, data, cloud, and enterprise integrations.

Languages

Java (8/11/17)SQLJavaScript

Frameworks & Libraries

Spring BootSpring CloudSpring SecuritySpring Data JPAHibernateSpring AI

Frontend

React JSHTMLCSS

Databases

MySQLPostgreSQLMongoDBSAP HANA

Messaging & Integrations

Apache KafkaRabbitMQStripeBoxOpenTextStaffology

Cloud & DevOps

AWS (EC2, S3, RDS, CloudFront)DockerKubernetesJenkinsCI/CD

SAP Technologies

CDSODataCQNSAP BTPCAP

Architecture & Design

MicroservicesEvent-DrivenREST APIsGraphQLWebSocketDesign Patterns

Tools & Testing

GitMavenGradlePostmanJiraJUnitMockitoLiquibaseIntelliJ Profiler

Experience

Where I've made an impact

Senior Developer · AsInt, Inc.

Aug 2024 – Present

Remote

Leading backend development of an enterprise Asset Integrity Suite (AIS) for the Oil & Gas domain, delivering accurate, scalable workflows integrated with SAP S/4HANA and SAP HANA.

  • Architected core modules integrating SAP S/4HANA & SAP HANA, supporting 1000+ daily asset transactions.
  • Engineered asset-integrity calculations (TMIN, MAWP, corrosion rate), improving computational accuracy by ~40%.
  • Optimized SAP HANA SQL views and CDS models, reducing query latency by 25–30%.
  • Resolved memory leaks with IntelliJ Profiler, cutting memory usage by ~45%.
  • Refactored modules using Factory & Strategy patterns, lowering maintenance effort by ~50%.
  • Implemented a distributed scheduler-lock to prevent duplicate job execution in concurrent environments.
  • Mentored interns and drove clean-code standards, maintaining 95% sprint-delivery consistency.

Software Engineer · Coditas Solutions LLP

Oct 2023 – Jul 2024

Pune, India

Delivered secure, scalable backend systems across healthcare, HR, and enterprise products with a focus on microservices, API performance, and cloud deployments.

  • Built microservices with Spring Boot & Spring Cloud, improving scalability and fault tolerance.
  • Reduced system downtime by ~40% through performance tuning and optimization.
  • Optimized MySQL/PostgreSQL schemas and queries, improving database performance by ~60%.
  • Secured services with JWT & Spring Security and API Gateway routing via Spring Cloud Gateway.
  • Improved API performance through caching, pagination, and indexing; integrated Stripe and Box.

Associate Software Engineer · Coditas Solutions LLP

Jan 2022 – Sep 2023

Pune, India

Built and maintained backend APIs and services in agile teams, collaborating cross-functionally to ship production-ready features.

  • Designed RESTful APIs integrating external systems and services.
  • Applied clean code and design patterns, cutting application load time by ~60%.
  • Implemented authentication/authorization with Spring Security and API-gateway routing.
  • Supported CI/CD pipelines and deployments alongside DevOps teams.

Projects

Selected work

Enterprise platforms and products I've architected and built — with my role and the outcomes they delivered.

Enterprise Asset Management Platform
Featured
Oil & GasSenior Developer

Enterprise Asset Management Platform

Enterprise-grade platform to manage asset reliability and integrity, integrating SAP APM capabilities and complex integrity calculations for high-volume operational data.

95%

sprint delivery consistency

~40%

calculation accuracy gain

~30%

faster data queries

JavaSpring BootSpring SecuritySAP HANACDSODataOpenTextSAP BTPCAPREST API
Workforce & Payroll Management System
Hospitality

Workforce & Payroll Management System

Software Engineer

Automated payroll across multiple branches

Workforce and operations platform for hospitality businesses, automating scheduling, attendance, payroll, and multi-branch coordination.

  • Shift scheduling & multi-branch coordination
  • Real-time attendance validation
  • Automated payroll & invoice generation
JavaSpring BootMySQLSpring SecurityJWTAWSREST APIGraphQLStaffology
Secure Healthcare SaaS Platform
Healthcare

Secure Healthcare SaaS Platform

Software Engineer

Multi-tenant SaaS with monetised file access

SaaS medical imaging and file-management platform with monetised downloads, secure storage, and multi-tenant, role-based access.

  • File monetisation & configurable pricing
  • Centralised storage for 3D scans & records
  • Role-based access & subscription plans
JavaSpring BootPostgreSQLMicroservicesRabbitMQStripeBox APIAWS
Interview Scheduling & Coordination Platform
HR & Recruitment

Interview Scheduling & Coordination Platform

Associate Software Engineer

Streamlined end-to-end interview coordination

Interview scheduling system that streamlines recruitment with candidate slot booking, tracking dashboards, and evaluation workflows.

  • Employee-driven candidate slot booking
  • TA dashboards for interview tracking
  • Evaluation & feedback workflows
JavaSpring BootMySQLSpring CloudLiquibaseREST APIGoogle Services
Learning & Development Platform
HR & Training

Learning & Development Platform

Associate Software Engineer

Full intern lifecycle & training management

Platform to streamline learning & development workflows: intern lifecycle management, mentor mapping, and batch-level training.

  • Intern lifecycle management
  • Daily performance tracking & mentor mapping
  • Batch-level training organisation
JavaSpring BootMongoDBSpring Data MongoHibernateREST API

Services

How I can help

From architecture to production — here's how we can work together, whether you're hiring or building.

Backend Development

Scalable Spring Boot microservices, secure REST & GraphQL APIs, and performance-tuned, database-driven systems built to last.

  • Microservices & REST/GraphQL APIs
  • Auth & security (JWT, Spring Security)
  • Database design & optimization

System & API Integration

Connect your product to the services it depends on — payments, storage, payroll, and enterprise platforms — reliably.

  • Stripe, Box, Staffology, OpenText
  • SAP S/4HANA & SAP HANA
  • Event-driven with Kafka / RabbitMQ

Cloud & DevOps

Ship and scale on AWS with containerization and automated pipelines for production-grade reliability.

  • AWS (EC2, S3, RDS, CloudFront)
  • Docker & Kubernetes
  • CI/CD with Jenkins

Consulting & Mentoring

Architecture reviews, performance audits, and hands-on mentoring to level up your codebase and your team.

  • Architecture & code reviews
  • Performance & memory tuning
  • Team mentoring & best practices

Available for full-time roles and freelance / contract work.

Have a project or role in mind? Let's talk.

Start a conversation

Education & Awards

Background & recognition

Education

B.Tech in Computer Science and Engineering

IES Institute of Technology and Management (RGPV)

Aug 2018 – Jul 2022Bhopal, MP, India

Languages

EnglishHindiBhojpuri

Awards & Recognition

  • Academic Best Performer

    IES University, Bhopal

    May 2022

  • Star Achiever

    IES University, Bhopal

    Feb 2020

  • Star Achiever

    IES University, Bhopal

    Feb 2019

Contact

Let's build something

Open to backend-focused, integration-heavy, or full-stack projects. Drop me a message.

Whether it's a collaboration, a role, or just a technical conversation — I'd love to hear from you. 👋

Emaildeepakprajapati.officials@gmail.com
LocationPune, Maharashtra, India

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