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SS

Sumit sengar

Open to work1 years experience

Software Engineer

Delhi NCRTarget Roles: Backend Engineer • Full-Stack Developer • Frontend Specialist

Software Engineer specializing in Java Full Stack Development.

GitHub

Standing Rank

Rank Not Available

Developer Badges

No badges earned yet

Skills & Technologies

39 skills
javajavascripttypescriptsqlspring bootspring mvcspring securityspring data jpahibernaterest apismicroservicesjwt authenticationmavenreact.jsnext.jshtml5css3tailwind cssbootstrapmicrosoft sql servermysqlpostgresqlmongodbjunit 5mockitounit testingintegration testingaws ec2ci/cdswagger/openapigitgithubpostmanjiraconfluenceagile/scrumsdlcproduction supportcode reviews

Work Experience

Full Stack Engineer

LOGZERO TECHNOLOGIES

Nov 2025 - Present Noida, India
  • Working on an in-house enterprise application built on a microservices architecture using Java, Spring Boot, Spring Data JPA, Hibernate, Microsoft SQL Server, React.js, and Next.js.
  • Developing scalable microservices and RESTful APIs for business-critical modules, following distributed system and clean architecture principles.
  • Designing and implementing secure backend services using Spring Boot, Spring Data JPA, and Hibernate, ensuring modularity, maintainability, and performance.
  • Designing relational database schemas, optimizing SQL queries, implementing indexing strategies, and improving database performance on Microsoft SQL Server.
  • Developing responsive frontend modules using React.js, Next.js, TypeScript, and Tailwind CSS, integrating them with backend REST APIs.
  • Writing unit and integration tests using JUnit 5 and Mockito to ensure code quality and application reliability.
  • Providing production support by debugging live issues, performing root cause analysis, and deploying fixes for enterprise applications.
  • Monitoring application performance, optimizing APIs, and resolving recurring production issues to improve system stability.
  • Following Controller–Service–Repository architecture, SOLID principles, and Agile development practices throughout the software development lifecycle.
  • Documenting APIs and backend workflows using Swagger/OpenAPI and participating in code reviews to maintain high coding standards.
  • Deployed application changes to Development and QA environments, validated deployments, monitored application logs, and resolved post-deployment issues
  • Managed source code using Git, created feature branches, raised pull requests, resolved merge conflicts, and participated in peer code reviews.
  • Implemented authentication and authorization using Spring Security and role-based access control for secured REST APIs.
  • Implemented centralized exception handling using @ControllerAdvice to improve API consistency.
  • Designed DTOs and entity mappings to separate persistence and presentation layers.
  • Implemented request validation using Bean Validation annotations to ensure API data integrity.
  • Participated in end-to-end software development life cycle including requirement analysis, development, testing, deployment, production support, and continuous enhancements.

Technical Support Engineer

LEARNYST

Feb 2025 - Jul 2025 Bengaluru, India
  • Resolved production issues in Java-based backend services by analyzing application logs, API requests, database queries, and exception traces, ensuring minimal downtime and SLA compliance.
  • Performed root cause analysis (RCA) for production incidents, collaborating with backend engineering teams to identify defects and validate fixes before deployment.
  • Debugged REST API failures, authentication issues, webhook integrations, and database-related problems using Postman, SQL, and centralized logging tools.
  • Investigated backend performance bottlenecks by analyzing application logs, slow database queries, and API response times, helping improve system reliability.
  • Validated production bug fixes through regression and sanity testing before release to ensure application stability.
  • Worked closely with Java backend developers, QA teams, and product teams to reproduce customer-reported issues and provide detailed technical diagnostics.
  • Assisted enterprise customers with API integrations, domain configuration, webhooks, and third-party platform connectivity.
  • Documented recurring production issues, troubleshooting procedures, and knowledge-base articles to reduce issue resolution time.
  • Collaborated with Java backend engineers during production releases and post-deployment validation.

Package app development associate

ACCENTURE

May 2024 - Sep 2024 Gurugram, India
  • Successfully completed intensive Java Full Stack Development training covering Java, Spring Boot, Spring MVC, Hibernate, SQL, REST APIs, HTML, CSS, JavaScript, and React.js.
  • Developed training projects and proof-of-concept applications using Java, Spring Boot, MySQL, and React.js to gain hands-on experience with enterprise application development.
  • Worked on a production support project, troubleshooting application issues, analyzing logs, resolving defects, and assisting senior developers in maintaining application stability.
  • Gained practical exposure to software development lifecycle (SDLC), Agile/Scrum methodologies, version control using Git, and issue tracking with Jira.
  • Acquired knowledge of cloud deployment concepts, CI/CD pipelines, Maven, and enterprise development workflows.
  • Developed Java Full Stack proof-of-concept applications using Spring Boot, React.js, REST APIs, and MySQL following MVC architecture and industry best practices.

Software engineer trainee

TO THE NEW

Feb 2023 - May 2023 Noida, India
  • Java Spring Expertise: Developed applications using the Java Spring Framework, including Spring Boot for RESTful APIs, Spring Hibernate for ORM, and Spring Security for authentication and authorization.
  • Build and Dependency Management: Utilized Maven for build automation and dependency management, streamlining project setup and ensuring seamless integration of external libraries.
  • Quality Assurance: Implemented comprehensive unit testing with JUnit and Mockito, adhering to test-driven development principles to ensure code quality and functionality.
  • Worked in Agile/Scrum environments with sprint planning, daily standups, and retrospectives
  • Used JIRA for issue tracking and Confluence for documentation
  • Collaborated with cross-functional teams including frontend developers, QA, and product owners
  • Implemented CRUD operations using Spring Data JPA and Hibernate.
  • Consumed and developed REST APIs.
  • Designed relational database tables and optimized SQL queries.
  • Participated in unit testing using JUnit and Mockito.
  • Implemented Spring Security and role-based authentication for RESTful APIs.

Projects

Rives Estate Backend

View Project
Spring BootSpring SecurityJWTMySQLHibernateMavenLombok
  • Developing a secure Real Estate Rental Platform backend using Spring Boot, Spring Security, and JWT, enabling role-based authentication (USER/DEALER) and protecting all sensitive routes for scalable and secure property management.
  • Implemented property management features for dealers and users, including property creation, update, deletion with ownership checks, and seamless image upload handling through Cloudinary with metadata tracking in a dedicated PropertyImage entity.
  • Designed and optimized MySQL relational database schema with Hibernate (JPA) ORM, ensuring efficient data storage and retrieval, while reducing boilerplate with Lombok and managing builds via Maven for production-ready deployment

Vidtube Backend project

Node.jsExpress.jsMongoDBJWTbcrypt
  • Tech Stack: Node.js, Express.js, MongoDB, JWT, bcrypt (Backend for VidTube, similar to YouTube)
  • Features: CRUD operations, user authentication, JWT security, bcrypt hashing, MongoDB integration, error handling & validations.

Smart contact management

Spring BootThymeleafMySQLSpring Security
  • Efficient Contact Management: Developed a contact management application with a secure and smart way of storing and handling contacts.
  • Authentication & Authorization: Implemented Spring Security for secure user authentication and authorization to ensure data protection.
  • Self-Contained and Easy to Run: Built with Spring Boot, Thymeleaf, and MySQL, allowing users to run the app with no configuration changes or additional setup.

Modern SaaS landing page

View Project
Next.jsTypeScriptTailwind CSSFramer Motion
  • Developed a responsive SaaS landing page using Next.js, TypeScript, Tailwind CSS, and Framer Motion with reusable UI components and performance optimization.

Movie APP

React NativeExpo RouterAppwrite
  • Developed a React Native mobile application (Expo Router) featuring dynamic movie data from TheMovieDB API.
  • Implemented user authentication (login, signup, session management) and managed a backend database using Appwrite.
  • Integrated search functionality with Appwrite to track and display trending movies based on search frequency.

Leaderboard Standings

Leaderboard Position Pending

Global test scores, peer standing percentiles, and algorithm leaderboard ranks are updated dynamically.

Assessment Highlights

Assessments Not Completed

Coding evaluations, system assessment results, and conceptual score badges will appear here after taking a test.

AI Collaboration Score

AI Collaboration Score Pending

Developer coding behavior, assistant cooperation, and AI pair-programming indicators are evaluated during live coding sessions.

Role Compatibility Profile

Role Compatibility Analysis Pending

Custom matching reports, candidate role compatibility percentiles, and core engineer strength profiles are processed once conceptual code screenings are complete.

Achievements

Oracle Cloud Infrastructure 2025 Certified AI Foundations Associate

Oracle Cloud Infrastructure 2025 Certified AI Foundations Associate — Oracle

Foundations of Ethical Hacking

Foundations of Ethical Hacking — Udacity

Supervised Machine Learning: Regression and Classification

Supervised Machine Learning: Regression and Classification — Deeplearning.ai (Andrew Ng)

Introduction to Data Science in Python

Introduction to Data Science in Python — Coursera

About Details

Professional Bio

Software Engineer with 1.5+ years of experience in Java Full Stack Development, specializing in Java, Spring Boot, Microservices, React.js, Next.js, and SQL databases. Experienced in designing RESTful APIs, developing enterprise applications, and building scalable software using Agile practices.

B. Tech in Information Technology in Information Technology

Guru Gobind Singh Indraprastha University (2019 - 2023)

Languages: English, Hindi