Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

Sign up
Appearance settings
@xvisierra
xvisierra
Follow
View xvisierra's full-sized avatar
πŸ’­
Prod access please!! 😊

Sameer Kumar Singh xvisierra

πŸ’­
Prod access please!! 😊
SWE-I @ HashedIn by Deloitte | Ex-Intern @nokia | Java | Spring (Boot, MVC, Security) | Hibernate/JPA | REST APIs | SQL & NoSQL | Docker, Jenkins, Kafka | 600+

Block or report xvisierra

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don't include any personal information such as legal names or email addresses. Markdown supported. This note will be visible to only you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
xvisierra /README.md

πŸ’« About Me

πŸ‘‹ Hi, I’m Sameer Kumar Singh

Results-driven Java Backend Engineer with ~2 years of experience building and modernizing enterprise-scale backend systems in cloud-native environments.
Currently working as Software Engineer I at HashedIn by Deloitte, focusing on Spring Boot microservices, REST APIs, and platform modernization.

  • πŸ’» Designing and maintaining production-grade backend services using Java 21, Spring Boot 3, Spring MVC, Spring Security, Hibernate/JPA
  • ☁️ Contributing to legacy Oracle WebLogic β†’ Spring Boot β†’ Azure modernization initiatives, including server-side UI migration (JSP β†’ Thymeleaf)
  • ⚑ Improving system performance using Apache Kafka (event streaming) and Redis (caching), reducing data-access latency
  • πŸ§ͺ Enforcing high code quality with JUnit 5, Mockito, SonarQube and CI/CD pipelines
  • πŸ€– Exposure to Generative AI & LLM-based internal tools to automate workflows and improve developer productivity

🧠 Core Technical Focus

Backend & Architecture

  • Java (8, 17, 21), Spring Boot 3, Spring MVC, Spring Security
  • Microservices, REST APIs, Hibernate/JPA, Thymeleaf
  • Apache Kafka, Redis

Databases

  • PostgreSQL, OracleDB, MySQL, MongoDB, DB2

Cloud & DevOps

  • Microsoft Azure, Docker, Kubernetes
  • Jenkins, GitHub Actions, CloudBees
  • Oracle WebLogic (Legacy Migration)

Testing & Tooling

  • JUnit 5, Mockito, SonarQube
  • Swagger/OpenAPI, Postman, Valgrind
  • Git, Linux, Shell/SSH

πŸ† Highlights

  • πŸ₯‡ Squad of the Quarter & multiple Spot Awards at HashedIn by Deloitte
  • πŸš€ Delivered large-scale backend modernization for US & Canada transaction systems
  • 🧩 Solved 600+ DSA problems | Max 1759 LeetCode | 6⭐ HackerRank

🌐 Connect with Me

LinkedIn GitHub HackerRank GeeksforGeeks CodeChef


πŸ“Š GitHub Stats


✍️ Random Dev Quote

Pinned Loading

  1. pdmsc pdmsc Public

    Personal diary management system for generating daily records & adding/updating entries safely. Save time with this convenient tool for managing personal details.

    C 5

  2. infy infy Public

    AI-powered college chatbot for students. Utilizes machine learning and Google Dataflow to assist with academic and administrative tasks. Ask it anything!

    HTML 4

  3. mapcoloring mapcoloring Public

    C++ console app that demonstrates a map colouring such that regions with a common border have different colors.Uses a greedy algorithm to visualize coloring of maps & demonstrate solution to graph ...

    C 3

  4. srms srms Public

    Student result management system built with SQL, PHP, HTML, CSS, JavaScript, XAMPP, and Bootstrap. Easily track and manage student results with this intuitive platform.

    JavaScript 4 1

  5. cryptock cryptock Public

    Cryptock is a web-based project that allows users to track the live prices of various cryptocurrencies and view their profit/loss on their investments through a personalized dashboard. The project ...

    HTML 3 1

  6. sameer-portfolio sameer-portfolio Public

    My portfolio website, showcasing my work and skills. Built with HTML, CSS, and JavaScript.

    HTML 3

AltStyle γ«γ‚ˆγ£γ¦ε€‰ζ›γ•γ‚ŒγŸγƒšγƒΌγ‚Έ (->γ‚ͺγƒͺγ‚ΈγƒŠγƒ«) /