Harapriya Bisoyee
San Antonio,Tx
Summary
Experienced with leading technical teams and managing software development projects. Utilizes in-depth knowledge of programming and system architecture to streamline processes. Track record of fostering team collaboration and achieving project milestones effectively.
Overview
18
18
years of professional experience
1
1
Certification
Work History
Technical Lead
Techmahindra Americas Ltd
07.2022 - Current
- Designed and implemented a modular microservices architecture for real-time order processing on AWS.
- Developed order and inventory services as independent microservices (Java), exposing secure RESTful APIs via AWS API Gateway.
- Implemented asynchronous communication using Apache Kafka topics to handle order events and inventory updates.
- Created a high-performance notification service in Golang, integrated with Kafka and AWS SNS for user alerts.
- Provisioned cloud environments using Terraform, managing dev, test, and production pipelines on AWS.
- Applied security best practices using IAM, VPC, encrypted storage, and real-time monitoring with CloudWatch.
Technical Lead
Techmahindra
05.2015 - 07.2022
- Migrated monolithic systems to loosely coupled microservices deployed on AWS ECS and EKS.
- Automated infrastructure provisioning with CloudFormation and Terraform, improving deployment efficiency.
- Implemented CI/CD pipelines using GitHub Actions for consistent and secure deployments across environments.
- Enhanced reliability using centralized logging (CloudWatch) and metrics (Prometheus, Grafana).
Technical lead
Hcl Technologies
08.2010 - 04.2015
- Worked on the design and development of a high-performance telecom billing and mediation platform for postpaid/prepaid subscribers, supporting millions of customer usage records (voice, SMS, and data).
- Focused on reliability, modularity, and performance — foundational principles that align with modern cloud and big data systems.
- Developed core modules in Java and C++ for real-time CDR processing, rating, and billing workflows.
- Built multi-threaded batch processing engines to handle millions of call and usage records per hour, optimizing memory and CPU usage.
- Designed custom message queues and in-memory caching to buffer and process telecom events with minimal latency — a pattern now mirrored in today's Kafka-based architectures.
- Created modular services for usage rating, taxation, and balance deduction, deployed as internal components, later inspiring microservice decomposition.
- Tuned Oracle-based billing databases with complex queries, stored procedures, partitioning, and indexing to meet performance SLAs.
- Worked on mediation logic to normalize and transform CDRs from various network vendors (Ericsson, Huawei, NSN), simulating data lake concepts with structured data zones.
- Integrated billing logic with external customer care and provisioning systems via SOAP-based web services and internal APIs.
Nokia Siemens Networks
02.2008 - 05.2010
- Contributed to the design and development of a telecom-grade PCRF (Policy and Charging Rules Function) engine for managing real-time mobile subscriber policies, QoS enforcement, and charging in 3G IMS and LTE EPC networks — a mission-critical backend system designed for scale, concurrency, and performance.
- Developed backend modules in Java and C++ for handling subscriber policy rules, billing events, and network session control in a high-availability telecom environment.
- Built the Subscriber Profile Repository (SPR) with Oracle DB, implementing optimized stored procedures, triggers, and indexing to support millions of subscriber profiles with low-latency access.
- Wrote complex SQL and MySQL queries for credit control, usage tracking, and charging workflows; reduced data access latency through performance tuning and query optimization.
- Implemented secure Diameter protocol handlers for L3 communication across core network elements — work that parallels secure API design and service mesh authentication in today's cloud-native apps.
- Engineered multithreaded processing modules in JAVA& C++ for concurrent message handling, resolving issues related to context switching, thread safety, and resource contention — foundational to modern async/multi-tenant microservices.
- Developed mechanisms for load balancing, failover, and retry logic to ensure system resilience under high traffic, prefiguring today's cloud scaling and distributed reliability patterns.
- Executed performance testing, integration validation, and debugging in live testbeds simulating real-world mobile subscriber loads.
Education
Master of Science - Fd
Xvdfd
Fd01-2015
Skills
- AWS cloud solutions: EC2, S3, RDS, and more
- IaC & Automation: Terraform, AWS CloudFormation, CI/CD (GitHub Actions, Jenkins)
- Programming Languages: Java, Springboot,Golang, Python, C
- Microservices & APIs: Spring Boot, REST, gRPC, AWS API Gateway
- Containers & Orchestration: Docker, Kubernetes (EKS)
- Security & Compliance: IAM Policies, VPC Security Groups, Encryption, Logging, Monitoring
- Others: Git, Prometheus, Grafana, Agile/Scrum, HTML/CSS/JAVA script/WEBrpc/RestAPI
Certification
- AWS Solution Architect – Linked-in
- AWS- serverless and microservices – Linked in
- Azure Data Engineer Associate- Microsoft credential ID(D984F5CA178F4049)
- CSM- Certified Scrum Master- Scrum Alliance- Credential id(001565107)
- CCNA CISCO Certified Network Associate- Cloud
Timeline
Technical Lead
Techmahindra Americas Ltd
07.2022 - Current
Technical Lead
Techmahindra
05.2015 - 07.2022
Technical lead
Hcl Technologies
08.2010 - 04.2015
Nokia Siemens Networks
02.2008 - 05.2010
Master of Science - Fd
Xvdfd