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About Me

Sana Begum

Senior Java/J2EE Backend Engineer with 6+ years of experience designing and delivering high-performance, scalable backend systems for large-scale enterprise platforms across transportation, retail, SaaS, and digital payments domains. Strong expertise in Core Java, J2EE, Spring MVC, Hibernate, JDBC, Struts, and building robust service-layer architectures that support complex business workflows.

Hello There!

I’m Sana Begum, a results-driven Senior Java/J2EE Backend Engineer with over 6 years of hands-on experience designing, developing, and deploying enterprise-grade applications using Java 8/11, Spring Boot, Microservices, and ReactJS.

  • Available for Freelancing & Full-Time Opportunities
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6+ years of experience in full Stack development ||

|| Expert in Java, Spring Boot, Hibernate & Microservices ||

|| Hands-on with Kafka, RabbitMQ & event-driven systems ||

Cloud deployments on AWS & Azure

Strong expertise in PostgreSQL, Oracle & MongoDB

Services

What I Offer

💻 Full-Stack Development

I design and develop complete, scalable web applications from concept to deployment — combining modern technologies.

🚀 Cloud & DevOps

Deploying applications on AWS & Azure with Docker, Kubernetes, Jenkins pipelines, and CI/CD automation for faster delivery.

🔄 API & Messaging Systems

Building REST APIs, implementing OAuth2 & JWT security, and integrating event-driven workflows with Kafka, JMS, and RabbitMQ.

My Resume

A snapshot of my professional journey — showcasing my experience, education, and growth as a Full-Stack Developer.

💼Experience

Nov 2022 – Present

Sr. Java Developer

BNSF Railway

Senior Java Backend Developer building scalable Spring MVC services supporting real-time logistics and rail-operations platforms.

  • Developed Core Java / J2EE backend modules and REST/SOAP APIs.
  • Optimized Oracle & PostgreSQL queries, procedures, and indexing.
  • Improved persistence using Hibernate caching and transaction tuning.
  • Implemented logging & monitoring using Log4j and Splunk.
  • Tech Stack: Java, Spring MVC, Hibernate, REST/SOAP, Oracle, PostgreSQL, Maven, WebLogic, JUnit, Jenkins
Jul 2021 – Oct 2022

Sr. Java / J2EE Developer

Staples

Delivered backend services for e-commerce, catalog, and order processing systems using Java and Spring MVC.

  • Built REST APIs for checkout, cart, and inventory workflows.
  • Refactored legacy Struts modules into Spring MVC.
  • Optimized PostgreSQL queries and database performance.
  • Implemented JUnit / Mockito testing for stable releases.
  • Tech Stack: Java, J2EE, Spring MVC, Hibernate, PostgreSQL, REST, Maven, Jenkins
Mar 2020 – Jun 2021

Sr. Java Full-Stack Developer

Tricentis

Developed backend services and admin dashboards for a test automation platform.

  • Implemented Java + Spring MVC APIs for execution and reporting.
  • Designed PostgreSQL & Oracle schemas and optimized SQL.
  • Built UI dashboards using JSP and AngularJS.
  • Supported deployments via Maven & WebLogic.
  • Tech Stack: Java, Spring MVC, Hibernate, REST, PostgreSQL, AngularJS, Maven
Aug 2017 – Feb 2019

Java Developer

Instamojo

Backend developer for a digital payments platform, supporting transactions, settlements, and merchant services.

  • Built Java / Spring MVC backend modules and REST APIs.
  • Developed financial-grade SQL procedures and validations.
  • Modernized legacy Struts applications.
  • Implemented unit tests for payment and KYC workflows.
  • Tech Stack: Java, J2EE, Spring MVC, Hibernate, PostgreSQL, Kafka, Jenkins

🎓Education

2017

Bachelor of Science – Accounting & Commerce

Osmania University

Completed a B.Sc. in Accounting & Commerce with core studies in financial accounting, business management, taxation, and auditing. Gained foundational expertise in business operations, financial analysis, and commercial law.

Pro Skills

Let’s Explore My Skills

Java (Expert)
95%
Spring Boot & Microservices
92%
PostgreSQL, MySQL, MongoDB
90%
AWS & Azure
88%
Kafka, JMS, RabbitMQ
87%
Docker & Kubernetes
85%
CI/CD (Jenkins,GitHub)
90%
Spring Security, OAuth2, JWT
85%

Works & Projects

Explore my professional projects across Web, Mobile, and Automation domains. These highlight my expertise in building secure, scalable, and enterprise-grade systems using technologies like Java, Python, C++, PHP, Kotlin, Spring Boot, React.js, Angular, Microservices, Kafka, Docker, Kubernetes, AWS, and Azure.

Java Developer Trainee
BootCamp & Training

TechLead Institute of Software Engineering | Java Developer Trainee Bootcamp | Jan 2017 – Jan 2018 | India

Completed an intensive Java Developer Trainee Program focused on Core Java, OOP, JDBC, Servlets, JSP, and structured backend application design. Developed multiple mini-projects using MVC patterns, form validations, session handling, and CRUD operations integrated with SQL databases.

Gained hands-on experience writing JDBC queries, performing exception handling, and managing request–response flows in Java web applications. Practiced version control, debugging techniques, and basic backend testing while collaborating on team-based assignments simulating real development workflows.

Tech Stack: Core Java, OOP, JDBC, Servlets, JSP, MVC, SQL Databases, Git, Debugging, Basic Testing.

Character Traits

Who I Am

Analytical thinker with strong problem-solving skills, experienced in designing scalable enterprise solutions.
Analytical
Problem Solver
Detail-oriented backend engineer with a focus on accuracy, reliability, and performance optimization.
Detail-Oriented
Quality Driven
Collaborative team player, thriving in Agile/Scrum environments and cross-functional projects.
Collaborative
Team Oriented
Adaptable and continuously learning, quick to embrace new tools, technologies, and domains.
Adaptable
Continuous Learner

contact

Get in Touch with Me!

My Location:

Aurora, IL, USA

Contact Number:

+1 551 230 4288

Email Me:

sana@webappn.comm

Ready to kickstart your next project?

Let’s connect and collaborate on impactful solutions. I’m open to full-time opportunities, consulting, or freelance work.

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