Senior Java Full-Stack Architect and Developer

Shahista Tazeen

Senior Java Full Stack Developer - (Certified)

Phone: 417-567 - 4425 Email: **********@*****.*** LinkedIn: https://www.linkedin.com/in/shahista-m-b970a9248/

Professional Summary

Senior Java Full Stack Developer with 7 years of experience delivering robust, scalable, and secure enterprise applications across finance, healthcare, and telecom. Specialized in architecting microservices and serverless solutions using Spring Boot, Node.js, and cloud-native services on AWS (EC2, Lambda, ECS, S3), Azure (AKS, Functions), and GCP (Cloud Run, Pub/Sub).

Frontend Expertise: Proficient in building modern, dynamic, and mobile-responsive SPAs using React.js, Angular (v4–v15), TypeScript, Redux, and strong Unix/Unit Testing practices.

Microservices Modernization: Successfully migrated large monolithic systems to distributed microservices using Spring Cloud, API Gateway, Eureka, and service discovery patterns to improve modularity, resilience, and deployment velocity.

Event-Driven Architecture: Built scalable asynchronous workflows using Kafka, RabbitMQ, Amazon SQS/SNS, and Kinesis for high-throughput, decoupled systems.

API Engineering: Developed and integrated RESTful and GraphQL APIs (Swagger/OpenAPI), serving millions of secure requests. Implemented Spring Security, OAuth2, JWT, and Ping Identity for end-to-end authentication and authorization.

Cloud & Containers: Mastered Docker, Kubernetes (EKS, AKS, GKE), Helm, and service mesh patterns for automated, cloud-agnostic deployments.

DevOps & CI/CD: Automated complex pipelines using Jenkins, GitHub Actions, GitLab CI, CircleCI, ArgoCD, and Spinnaker enabling zero-downtime releases.

Infrastructure-as-Code: Experienced with Terraform, CloudFormation, and Ansible to manage compute, networking, IAM, and provisioning of multi-cloud environments.

Databases & Storage: Strong expertise across PostgreSQL, MySQL, Oracle, MongoDB, DynamoDB, Cassandra, Redis—covering schema design, indexing, optimization, replication, and migrations.

Data Engineering: Designed and maintained real-time and batch ETL pipelines using Apache Spark, Spring Batch, Flume, Beam, and Kafka Streams.

Monitoring & Observability: Implemented ELK Stack, Grafana, Prometheus, CloudWatch, and Stackdriver dashboards, reducing MTTR and improving reliability.

Modern Java Practices: Upgraded legacy applications from Java 7 to 17, leveraging functional programming, streams, and improved concurrency. Followed TDD/BDD using JUnit, Mockito, TestNG, Selenium, Postman, and Cypress.

Compliance & Security: Delivered HIPAA-, PCI-, and GDPR-compliant solutions with encryption, RBAC, audit logging, and DevSecOps practices using SAST/DAST tools (SonarQube, Snyk).

Cross-Platform Development: Built applications using React Native, Flutter, and PWAs to expand accessibility and reduce development overhead.

Architecture & Patterns: Applied Domain-Driven Design (DDD), CQRS, caching, streaming, and 12-Factor App methodology for scalable, maintainable systems.

Integrations: Worked with Stripe, Twilio, Firebase, Okta, ElasticSearch, and other third-party APIs/SDKs to enhance application capabilities.

Leadership & Collaboration: Mentored junior engineers, led code reviews, improved engineering standards, and delivered high-quality features in Agile/Scrum environments.

Version Control: Skilled in GitHub, GitLab, Bitbucket, GitFlow branching strategies, and collaborative workflows.

Known for strong problem-solving, analytical thinking, clear communication, and the ability to design end-to-end systems that meet performance, security, and business requirements.

Core Competencies

Java Microservices Architecture

Spring Boot & Spring Cloud

RESTful & GraphQL API Development

Event-Driven Systems (Apache Kafka)

Cloud-Native Development (AWS, Azure, GCP)

Containerization & Orchestration (Docker, Kubernetes)

CI/CD & DevOps Automation

Distributed Systems & Scalability

Secure Application Development (OAuth2, JWT)

Full Stack Development (React, Angular)

Technical Skills

Programming Languages : Java (8/11/17), JavaScript (ES6+), TypeScript, Python 3.x, SQL, PL/SQL, Go, Rust, Kotlin, C, C++

Backend Technologies : Spring Framework (Core, Boot, Security, Batch, MVC, AOP), Hibernate 5.x, JPA, JDBC, Servlets, Node.js, Micronaut, Drools, JTA, RMI, JavaBeans, RESTful & GraphQL, API Development

Frontend Technologies : React.js, Angular (v4–v15), AngularJS, Next.js, Svelte, HTML5, CSS3, Bootstrap, Tailwind CSS, SASS/SCSS, jQuery, AJAX, JSON, XML, XSLT, Task Runners: Grunt, Gulp

Databases : PostgreSQL, MySQL, Oracle, SQL Server, MongoDB, DynamoDB, Cassandra, Neo4j, IBM DB2

Middleware & Messaging : Apache Kafka, RabbitMQ, Amazon SQS/SNS, ActiveMQ, IBM MQ, JMS

Web Services & API Technologies : REST, GraphQL, SOAP, JAX-RS, JAX-WS, Swagger/OpenAPI, WSDL, XSD, Apache Axis

DevOps, CI/CD & Infrastructure : Docker, Kubernetes (EKS, AKS, GKE), Helm, OpenShift, Podman Jenkins, GitHub Actions, GitLab CI/CD, CircleCI, Terraform, Ansible, Maven, Gradle, Unix/Linux Systems

Version Control & Collaboration : Git (GitHub, GitLab, Bitbucket), SVN, JIRA, Confluence

Cloud Platforms : AWS (EC2, Lambda, S3, ECS, EKS, CloudWatch), Azure (AKS, Functions, Data Lake), GCP (Cloud Run, Pub/Sub, Stackdriver, BigQuery), IBM Cloud, Netflix Eureka

Testing Frameworks : JUnit, Mockito, Selenium, TestNG, JMeter, Jasmine, Karma

Security : Spring Security, OAuth 2.0, JWT, Ping Identity, LDAP

Reports & Analytics : Jasper Reports, Crystal Reports, SSRS, Power BI (Basic)

Servers : Apache Tomcat, Jetty, JBOSS, Oracle WebLogic, IBM WebSphere, Mainframes

Development Tools : IntelliJ IDEA, Eclipse, NetBeans, Spring Tool Suite (STS), VS Code, Atom, PyCharm

Methodologies : Agile (Scrum, Kanban), Waterfall, TDD, BDD

Design & Architecture Patterns : MVC, Singleton, Factory, DAO, DTO, Service Facade, Front Controller, Domain-Driven Design (DDD), CQRS, 12-Factor App Principles

Additional Technologies: Go, Rust, Kotlin, C, C++, Flutter, Svelte, Mainframes

Professional Experience

Comcast - Chicago, IL

Senior Java Full Stack Developer Jan 2023 - Present

Project Summary:

Played a key role in Comcast’s digital transformation by modernizing large-scale customer, billing, and video-streaming platforms. Built cloud-native microservices, event-driven data pipelines, and real-time analytical systems across AWS, GCP, and on-prem ecosystems.

Key Responsibilities & Achievements:

Led end-to-end SDLC efforts to architect, design, and deploy enterprise-grade applications aligned with Comcast’s multi-cloud modernization roadmap.

Designed scalable microservices using Java 11/17, Spring Boot, Spring Cloud, deployed across AWS (EC2, RDS, Lambda, S3) and GCP (Cloud Run, Pub/Sub, Cloud SQL) ensuring high availability and resilience.

Engineered real-time, event-driven pipelines with Kafka, Kafka Streams, Flume, processing millions of customer transactions daily and reducing data latency by 40%.

Built and integrated RESTful/SOAP services using Spring MVC, JAX-RS, JAX-WS; integrated partner systems and payment gateways using MuleSoft, Kafka, RabbitMQ.

Developed intuitive, responsive SPAs using React.js, Angular 13, Redux, RxJS, TypeScript, Bootstrap, improving customer experience on Xfinity platforms.

Migrated monolithic legacy systems to Java 17 microservices, applying functional programming and core design patterns (Factory, Singleton, Service Locator) for improved maintainability.

Implemented enterprise-grade API security using Spring Security, OAuth2, JWT, enabling secure access for customer self-service portals.

Automated CI/CD pipelines in GitLab CI + Jenkins, enabling zero-downtime deployments and reducing release cycles by 35%.

Deployed containerized services with Docker, Kubernetes (EKS, GKE) using blue-green and rolling deployment strategies.

Tuned databases across Oracle, PostgreSQL, MongoDB, Cassandra by optimizing queries, indexing, partitions, and replication strategies.

Built distributed ETL and analytics jobs using Apache Spark, reducing batch execution time by 50% for customer analytics workloads.

Implemented centralized observability using Grafana, Prometheus, Splunk, ELK, OpenTelemetry, reducing MTTR by 60%.

Automated cloud infrastructure provisioning using Terraform, Ansible, reducing environment setup time by 60%.

Integrated AI/ML models, AWS Rekognition, TensorFlow Serving into production pipelines to enable predictive capabilities and intelligent analytics.

Built edge computing integrations using Cloudflare Workers, AWS CloudFront Functions, reducing global response latency by 30%.

Introduced GraphQL, API-first design, and OpenAPI documentation to accelerate integration timelines and improve developer experience.

Mentored junior developers, led code reviews, and drove engineering best practices across agile teams.

IM Global - Indianapolis, IN

Java Full Stack Developer Oct 2020 - Dec 2022

Project Summary:

Developed enterprise digital platforms and modernized legacy systems into microservices across hybrid cloud environments (AWS + Azure). Delivered secure, scalable applications supporting healthcare, finance, and compliance-driven workloads.

Key Responsibilities & Achievements:

Developed dynamic SPAs using React.js, Angular, Redux, Bootstrap, improving UI performance and customer usability.

Architected microservices using Spring Boot, Spring Cloud Config, Eureka, Feign Clients, Zuul API Gateway, ensuring high scalability and resilience.

Converted core modules to Kotlin leveraging coroutines and null safety, improving code quality and reducing runtime errors.

Modernized monolithic applications into distributed services deployed to AWS Lambda, ECS, RDS, S3 and Azure AKS/Web Apps.

Built secure authentication flows with OAuth2, JWT, Ping Identity, enabling enterprise SSO and HIPAA/GDPR compliance.

Developed backend services in Java Spring Boot & Node.js/Express, integrating event-driven communication with Kafka, JMS.

Created GraphQL APIs to reduce over-fetching and improve client-server efficiency.

Implemented Spring Batch for large-scale ETL and financial data processing workflows.

Leveraged GCP Cloud Run, Pub/Sub, Cloud SQL for analytics workloads and background job execution.

Built real-time UI features using WebSockets, Socket.IO, integrated with Kafka topics for instant updates.

Designed CI/CD pipelines using Bamboo, Jenkins, GitLab CI, GitHub Actions, reducing manual overhead and speeding up releases.

Optimized front-end assets using Gulp, Grunt, NPM, reducing build sizes and load times.

Automated data pipelines using Apache NiFi, improving ingestion and transformation efficiency.

Implemented distributed data processing using Apache Spark for large-scale reporting and analytics.

Deployed observability tools (Grafana, Prometheus, CloudWatch) for monitoring, alerting, and faster issue resolution.

Mentored junior developers, conducted code reviews, and established best practices across microservices architecture.

CVS Health – Woonsocket, RI

Java Developer Jan 2019 - Oct 2020

Project Summary:

Contributed to the modernization of statewide healthcare systems by building cloud-native microservices, scalable data pipelines, and secure clinical dashboards across AWS, Azure, and GCP environments.

Key Responsibilities & Achievements:

Designed and developed Spring Boot microservices using Spring Cloud for distributed communication and scalability.

Optimized ETL and real-time analytics using Apache Spark + AWS Kinesis, reducing data latency by 30%.

Built GraphQL APIs for efficient data retrieval, reducing response payloads and improving query precision by 20%.

Containerized applications with Docker and deployed on Kubernetes, improving elasticity by 40%.

Implemented CI/CD automation with Jenkins, GitHub Actions, reducing deployment times by 25%.

Built high-throughput data pipelines with Apache Kafka, IBM MQ, supporting pharmacy and insurance workflows.

Designed data pipelines in Scala + Spark, processing millions of prescription records daily.

Integrated Hibernate ORM with MySQL, Cassandra; tuned databases using indexing and optimized queries.

Developed healthcare dashboards using Jasper Reports, integrating patient metrics and prescription analytics.

Integrated Kotlin + FHIR APIs for health data interoperability, supporting statewide health exchanges.

Designed and optimized Elasticsearch for advanced healthcare search features, improving search performance by 40%.

Implemented observability using ELK Stack, reducing debugging time by 30%.

Managed multi-cloud infrastructure on AWS, Azure, OpenShift, automating deployments using Terraform and CloudFormation.

Migrated on-prem applications to AWS using EC2, S3, IAM, RDS, ECS, Lambda.

Developed Angular-based applications (v8–14), improving UI responsiveness and data visualization.

Ensured HIPAA compliance via secure logging, encrypted communication, RBAC, and audit trails.

Performed TDD/BDD using JUnit, Mockito, Cucumber, ensuring system reliability.

Education

Master of Science in Computer Science - Missouri State University

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