Summary
Overview
Work History
Education
Skills
Timeline
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Subhashini Katam

Summary

  • Full-stack Software Developer with 7 years of experience designing and delivering scalable, real-time applications across banking, healthcare, and customer data domains.
  • Proficient in backend development using Java, Python, and SQL/PL-SQL, building resilient microservices and data-driven workflows.
  • Hands-on expertise with AWS (Lambda, EventBridge, Kinesis, API Gateway, DynamoDB, ECS, EKS, CloudWatch) and Azure Functions for cloud-native, event-driven architectures.
  • Skilled in developing REST and SOAP APIs, secure microservices architectures, and implementing ISO 20022 standards for financial messaging.
  • Frontend development experience with React.js, Angular, HTML5, CSS3, and TypeScript, delivering user-friendly dashboards and real-time claim/payment interfaces.
  • Strong knowledge of Agile/Scrum practices, actively contributing to sprint planning, backlog refinement, retrospectives, and daily stand-ups.
  • Applied SOLID principles and design patterns to build maintainable, modular, and scalable enterprise systems.
  • Experienced with TDD/BDD using JUnit, Mockito, Cucumber, PyTest, and Postman test suites, ensuring high code quality and coverage.
  • Implemented fraud detection, sanctions screening, and HIPAA-compliant security into transactional workflows with Spring Security, OAuth2, and JWT.
  • Automated deployments via CI/CD pipelines using GitLab CI, GitHub Actions, Maven/Gradle, SonarQube, and Black, reducing release errors.
  • Containerized and orchestrated workloads with Docker, Kubernetes (EKS, ECS, Helm) to deliver fault-tolerant, scalable applications.
  • Optimized database performance in Oracle, PostgreSQL, MongoDB, and Cassandra, leveraging Redis caching for low-latency access.
  • Automated infrastructure provisioning with Terraform and CloudFormation for repeatable and secure environments.
  • Collaborated with business, compliance, and operations stakeholders to refine requirements, iterate prototypes, and deliver regulatory-compliant solutions.
  • Mentored junior engineers, participated in peer code reviews, and promoted best practices across engineering teams.

Overview

7
7
years of professional experience

Work History

Software Developer

Cognizant Technologies
Hyderabad
05.2018 - 03.2021
  • Built backend validation services using Python and Java Spring Boot to process healthcare claims, ensuring accurate eligibility checks and code validation.
  • Developed Angular-based components for provider claim submissions with real-time error feedback, reducing resubmission cycles.
  • Integrated SOAP and REST services with Spring Web Services to enable smooth interoperability with legacy payer systems.
  • Used Microsoft Azure to deploy microservices and manage pipelines through Azure DevOps for CI/CD automation.
  • Designed serverless APIs with AWS Lambda, API Gateway, and DynamoDB to support scalable claim validation and processing workflows.
  • Optimized Oracle database procedures and wrote custom SQL queries to validate ICD-10/CPT codes and streamline claim batch tasks.
  • Participated in the full SDLC, from requirements gathering and design to testing, debugging, and production deployment.
  • Applied object-oriented design and SOLID principles to modularize claim validation rules and duplicate detection logic.
  • Implemented CI/CD pipelines with GitHub Actions, integrating unit testing (JUnit, PyTest), static analysis (SonarQube), and artifact storage.
  • Utilized MongoDB for storing flexible claims payloads alongside relational Oracle data, supporting hybrid data management.
  • Documented APIs using Swagger/OpenAPI, improving onboarding for QA teams and cross-functional stakeholders.
  • Wrote BDD-style test scenarios with PyTest and prepared test datasets to validate claim workflows and defect fixes.
  • Enforced code quality standards through SonarQube and integrated builds with Gradle for consistent delivery.
  • Secured healthcare APIs with Spring Security, OAuth2, and JWT, ensuring HIPAA compliance across all claim workflows.
  • Participated in Agile sprints, collaborating with QA, business analysts, and operations to deliver high-quality features on time.
  • Configured AWS CloudWatch and Azure Application Insights for centralized monitoring and anomaly detection in claim processing.
  • Assisted senior engineers, debugged API issues using logs, and contributed to knowledge-sharing sessions for continuous improvement

Full Stack Developer

Truist Bank
10.2023 - Current
  • Designed and developed React.js front-end dashboards enabling retail and business customers to initiate, track, and manage real-time payments and account services.
  • Built Java Spring Boot microservices for payment initiation, settlement, account validation, and customer support automation, exposing REST APIs for both internal and external integrations.
  • Integrated with FedNow for 24/7 instant settlement and adopted ISO 20022 messaging standards, delivering interoperable, data-rich payment instructions.
  • Embedded fraud detection and sanctions screening directly into transaction workflows without adding latency, leveraging Redis caching for rapid lookups and session handling.
  • Optimized data persistence with Oracle for high-integrity transactional records and MongoDB for flexible storage of enriched ISO 20022 payloads, tuning queries and indexes for peak performance.
  • Provisioned secure, scalable environments via AWS CloudFormation (VPCs, NAT gateways, load balancers) and deployed workloads to ECS with auto-scaling, ensuring resiliency and isolation.
  • Containerized payment services using Docker, streamlining consistent deployments across development, testing, and production environments.
  • Automated builds and deployments with GitLab CI/CD pipelines and Maven, integrating unit tests (JUnit, Mockito), static code analysis, and reusable POM templates to enforce quality and compliance.
  • Conducted API validation with Postman and Swagger, ensuring consistency and accuracy across manual and automated testing cycles.
  • Defined AWS CloudWatch metrics and alarms to proactively monitor throughput, latency, and anomalies, driving faster detection and resolution of issues.
  • Participated actively in Agile/Scrum ceremonies, contributing to sprint planning, backlog grooming, and retrospectives to continuously improve delivery velocity.
  • Partnered with business stakeholders, compliance, and operations teams to refine requirements, iterate prototypes, and deliver a resilient, scalable, and regulatory-compliant payments platform that met customer demand for real-time services

Full stack developer

Accenture
Hyderabad
04.2021 - 07.2023
  • Engineered real-time validation APIs using Python and Java Spring Boot to verify standardized healthcare codes, member eligibility, and prevent duplicate submissions through idempotency keys..
  • Developed Angular-based user interfaces enabling providers to submit claims with instant error feedback, improving usability and reducing resubmission cycles.
  • Integrated SOAP and REST services to bridge modern claim workflows with legacy payer systems, ensuring backward compatibility and seamless interoperability.
  • Designed serverless solutions with AWS Lambda, API Gateway, and Azure Functions to process claims on-demand and manage intra-day batch workflows, optimizing scalability and cost.
  • Transitioned legacy overnight batch jobs into intra-day micro-batch pipelines for pricing, adjudication, and payment calculations, significantly accelerating throughput.
  • Automated the software delivery lifecycle with GitHub Actions CI/CD pipelines, incorporating unit testing (JUnit, PyTest), static code analysis (SonarQube), and containerized deployments, reducing release errors by 40%.
  • Secured sensitive health data by implementing Spring Security with OAuth2 and JWT, ensuring HIPAA compliance across all claim workflows.
  • Tuned database performance in Oracle and MongoDB, reducing query latency for eligibility and historical claim lookups by ~30%.
  • Deployed Redis caching layers to serve high-frequency provider and eligibility data, improving real-time validation performance.
  • Established centralized monitoring and alerting via AWS CloudWatch and Azure Application Insights, enabling proactive detection of anomalies and faster incident resolution.
  • Collaborated closely with business stakeholders, QA, and product teams in Agile sprints to refine requirements and deliver incremental, high-impact functionality

Education

The University of Texas At Arlington
Arlington, TX

Skills

  • Languages: Java, Python, SQL, PL/SQL, Nodejs, TypeScript
  • Frameworks & Libraries: Spring Boot, Reactjs, Angular, Hibernate, JUnit, Mockito, Cucumber, Apache
  • Frontend & UI: Reactjs, Angular, HTML5, CSS3, JavaScript, TypeScript
  • APIs & Architecture: REST APIs, Microservices, SOAP, Event-Driven Architecture
  • Cloud & DevOps: AWS (Lambda, EventBridge, Kinesis, API Gateway, DynamoDB, CloudWatch, VPC, IAM, ECS, EKS), Microsoft Azure, Terraform, CloudFormation, Jenkins, GitHub Actions, GitLab CI/CD
  • Databases: Oracle, PostgreSQL, MySQL, MongoDB, Cassandra
  • Caching & Messaging: Redis, Kafka
  • Containers & Orchestration: Docker, Kubernetes (EKS, ECS, Helm)
  • Security: Spring Security, OAuth2, JWT, API Gateway Policies
  • Testing & QA: TDD, BDD, Postman, JUnit, Mockito, PyTest, Cucumber, SonarQube, Black, Swagger/OpenAPI
  • Build Tools & Version Control: Maven, Gradle, Git, GitHub, GitLab
  • Other Tools & Practices: Agile/Scrum, CI/CD, Design Patterns, SOLID Principles, OOP, JSON, XML

Timeline

Full Stack Developer

Truist Bank
10.2023 - Current

Full stack developer

Accenture
04.2021 - 07.2023

Software Developer

Cognizant Technologies
05.2018 - 03.2021

The University of Texas At Arlington

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Subhashini Katam