Jan 2025 – Present · 1 yr 5 mos · Hyderabad · On-site

• Engineered a Distributed Payment Processing Platform using Java Microservices, Razorpay Webhooks, Kafka, Redis, and PostgreSQL for scalable and fault-tolerant transaction processing.
• Implemented Webhook-Driven Architecture with Kafka Event Streaming, Manual Offset Consumers, DLQ Recovery, Reconciliation Jobs, and Audit Logging for resilient payment workflows.
• Designed Two-Layer Idempotency using Redis Deduplication, PostgreSQL Row-Level Locking, and Payment State Validation to prevent duplicate transactions and race conditions.
• Developed a FastAPI Monitoring & Reconciliation Service with Webhook Health Checks, Rocket.Chat Alerts, Automated Recovery, and systemd-based Linux deployment.
• Managed distributed infrastructure involving Kafka, Redis, PostgreSQL, Nginx, FastAPI, and Java Microservices with production-grade monitoring.
• Built a Metadata-Driven Dynamic Form Engine using Angular, Spring Boot, and PostgreSQL supporting configurable forms, dynamic fields, and workflows.
• Developed an internal Front-End Framework as a local npm package, providing reusable wrappers and UI components built on Bootstrap, Material Icons, and other third-party libraries, enabling standardized UI development and centralized dependency management.
• Administered Dev & QA Infrastructure with multi-instance deployments, SSH access, firewall hardening, sudoers configuration, Nginx setup, and environment provisioning.
• Configured GitLab CI/CD Pipelines with deployment automation, release orchestration, centralized logging, and operational scripting.
• Optimized Linux server storage by analyzing filesystem utilization, removing obsolete artifacts and logs, identifying high-volume files, and reclaiming critical disk space.
• Performed Linux operations including service monitoring, log analysis, deployment validation, infrastructure troubleshooting, and distributed system maintenance.

Jan 2025 – Present · 1 yr 5 mos · Hyderabad · On-site

• Mentored engineers via code reviews, pair programming, and architecture discussions. Migrated notification delivery from WebSockets to SSE and planned SQL/NoSQL sharding strategies. Built reusable npm registry-compatible libraries and Spring Boot scheduler frameworks.
• Engineered L1/L2 caching using ConcurrentHashMap + Redis, reducing DB load by 70%. Designed Kafka-based feedback systems, Redis-backed Eureka discovery, Redis/Kafka/WebSocket chatbot platform (1K+ sessions), custom KMS services, secure token revocation flows, idempotent payment recovery, Protobuf + Redis TTL image caching, and Spring Boot web scraping microservices.
• Built distributed payment systems using Kafka, Redis, PostgreSQL, Razorpay Webhooks, FastAPI, Nginx, and Java Microservices. Implemented webhook-driven processing, Kafka streaming, manual offset consumers, DLQ recovery, reconciliation jobs, audit logging, Redis deduplication, PostgreSQL row locking, webhook monitoring, Rocket.Chat alerts, automated recovery, and systemd-managed Linux services.
• Managed Kafka, Redis, PostgreSQL, Nginx, Linux infrastructure, GitLab CI/CD, deployment automation, centralized logging, firewall/sudoers setup, SSH access, multi-instance provisioning, operational scripting, monitoring, troubleshooting, and storage optimization by cleaning obsolete deployment logs and analyzing filesystem utilization.
• Developed metadata-driven dynamic form platforms using Angular, Spring Boot, and PostgreSQL. Optimized Android APK performance, integrated face detection and Apple/Google Maps, enabled cross-platform WebSocket sync, built WebRTC audio rooms with Coturn, implemented Sign in with Apple, developed modular Flutter apps, Angular language switchers, Capacitor iOS plugins, and supported iOS releases using Fastlane/App Store Connect.

Dec 2024 – May 2025 · 5 mos · Hyderabad, Telangana, India · Remote

• 🔒 Strengthening Security with API Gateway Features
• Logging:
• Implement comprehensive logging to track API requests, monitor access patterns, and detect suspicious activities in real-time.
• Authentication Middleware:
• Use authentication middleware to ensure secure API access by validating credentials, including OAuth 2.0 and JWT tokens.
• Rate Limiting:
• Integrate rate limiting to prevent API abuse, ensuring fair usage and protecting against DoS attacks by limiting requests per user/IP.
• CORS Configuration:
• Properly configure CORS (Cross-Origin Resource Sharing) to control which domains can access the API, minimizing cross-origin threats.
• Fraud Detection System:
• Developed a fraud detection system using FastAPI, integrated within the Node.js microservice architecture. This system leverages robust AI-driven algorithms and ML logic to analyze user data and detect fraudulent activities in real-time.
• Implementing these features can enhance API security, improve performance, and ensure smooth operations.
• Also deployed all the services developed to production.
• #APISecurity #Logging #Authentication #RateLimiting #CORS #CyberSecurity #FraudDetection #FastAPI

Nov 2024 – Nov 2024 · 0 mo · Hyderabad, Telangana, India · Remote

• Drive product development and deliver innovative financial solutions as an individual contributor.
• Collaborate with cross-functional teams to enhance user experiences and support business growth.
• Implemented Google Login, JWT, Twilio, device identification services, mail generation using SMTP, microservices, API gateway, and media queries authentication for secure and seamless user interactions.
• Actively working on integrating blockchain technologies to bridge Web2 and Web3.
• Focused on leveraging emerging technologies to enhance product offerings and stay competitive in the fintech space.

Oct 2024 – Nov 2024 · 1 mo · Warangal, Telangana, India · Remote

• I hold the position of Senior Associate Developer at PVK Infotech Pvt Ltd (https://pvk-infotech.com), where I provide guidance to development teams and spearhead the creation of innovative solutions through comprehensive research and analysis.
• Some of my key contributions include:
• => Implementing communication with the Amplitude portal via API and CDN link to fetch live visitor counts.
• => Enabling intercommunication with AWS in a MERN stack project through AWS SDK integration.
• => Developing a feature to display the country calling code based on the current user's location.
• => Working on automation testing using Selenium, where I utilized relative XPath and CSS selectors to track entries in the view and wrote dynamic Selenium code in Java for executing tests across a set of data, optimizing manual testing efforts.

Jun 2024 – Oct 2024 · 4 mos · Hyderabad, Telangana, India · On-site

• Position: Software Engineer**
• I Web Application Deployment**: Deployed a web application utilizing Streamlit (frontend) and Python (backend) on Microsoft Azure, leveraging the Microsoft Teams Toolkit. Configured YAML for environment-specific deployments using the GPT-4Omni model.
• Azure Integration**: Integrated Azure Key Vault to secure sensitive information within deployed bots.
• Angular Development**: Implemented state retention and tab persistence in Angular applications to enhance user experience.
• Microservices Architecture**: Developed multiple Java microservices, configured structured logging using XML, and secured endpoints with JWT authentication for web socket and http. Facilitated inter-service communication using Feign Client and deployed the services to GitLab with Git version control.
• Hybrid Mobile App Development**: Generated an APK from a hybrid Angular application using Android Studio with Capacitor runtime. Integrated Google social login for both Android and web platforms using Google Identity Services and Capacitor plugins.
• Code Optimization**: Optimized Java backend microservices for improved performance and conducted database indexing for accelerated data retrieval.
• Kafka and Zookeeper Solutions**: Proposed and implemented solutions to address drawbacks in Kafka producer performance while publishing messages within a Zookeeper and Kafka broker cluster, aligning with Java microservice architecture refactoring.
• Implemented batch processing in client side for REST-API calls.
• Created a custom Angular directive holding image zooming logic.
• Implemented platform specific JWT token refresh with refresh count as claim to plan ehanced security to allow configured count of recent login.

Jan 2024 – May 2024 · 4 mos · Hyderabad, Telangana, India · On-site

• Position: Software Developer (Full Stack Developer)**
• Authentication and Payment Integration**: Implemented OTP verification, JWT authentication, Google social login, and RazorPay payment gateway integration. Secured backend endpoints and configured these features in both Angular (frontend) and Java (Spring framework, backend).
• Geolocation Features**: Developed country code functionality to determine users' current locations.
• Route Security**: Utilized Auth Guard in Angular to secure routes with CanActivateFn, enhancing application security.
• Token Authentication**: Implemented an Angular interceptor and a Java backend filter to authenticate tokens before allowing REST service interactions.
• Caching Mechanism**: Developed an in-memory caching mechanism for Angular frontend service classes to optimize performance.
• Microsoft Bot Deployment**: Deployed a Microsoft Bot Framework app service from VSCode to Microsoft Azure using the Microsoft Toolkit.
• Deployment Automation**: Automated deployment processes for Microsoft Azure using Python scripts.
• Email Functionality**: Implemented email-sending capabilities using the SMTP protocol.

May 2023 – Dec 2023 · 7 mos · Bengaluru, Karnataka, India · On-site

• Skills and Experience**
• Scripting and Command Line**: Gained proficiency in Perl scripting, shell scripting, and Linux commands.
• Web Technologies**: Revised fundamentals of HTML, CSS, JavaScript, and various frontend frameworks, alongside backend languages such as Java.
• Project Development**: Contributed to Angular and React.js projects with Java-based backend frameworks.
• Database Management**: Developed SQL queries for MySQL database management and established database connectivity for frontend and backend integration.
• Cross-Platform Development**: Implemented Ionic framework with Angular to create projects compatible with web browsers, Android, and iOS.
• eCommerce Project**: Participated in an eCommerce project utilizing Java frameworks for the backend and HTML, CSS, Bootstrap, jQuery, and JavaScript for the frontend.
• CRUD and RESTful Services**: Learned and implemented CRUD operations and RESTful web services for efficient data handling.
• API Testing**: Utilized Postman for testing RESTful web service operations to ensure functionality and performance.

Feb 2023 – May 2023 · 3 mos

• Here, I learnt to create stack overflow clone using Mern stack.