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Raj Wankhede

Gen AI - Python developer || AWS Cloud

Maharashtra

10+ years of work experience

LTM (Previously LTIMindtree)
Feb 20242 yrs 5 mosJun 2026

Navi Mumbai

Client: Electronic Arts (EA) Title: Python developer • Designed and implemented a knowledge graph-based architecture using Neo4j to model complex entity relationships across game assets, player profiles, and content metadata, enabling rich graph traversal queries that reduced lookup latency by 40%. • Integrate LangChain to build production-grade RAG pipelines, grounding AI responses strictly in internal knowledge bases to ensure accuracy and compliance. • Designed and maintained Private REST APIs on Amazon API Gateway with resource-level IAM authorization, API key management, and Authorizers (Lambda/Cognito) to control access across internal services and external game clients. • Experience in AWS serverless patterns like API Gateway, AWS Lambda, and LangChain RAG pipelines, and Neo4j graph modeling. • Worked on AI-enabled backend systems on AWS integrating Lambda, API Gateway, RDS, S3, and Neo4j, supporting 10,000+ daily active users across scalable knowledge-driven applications
Amazon Web Services (AWS)
Sep 20211 yr 10 mosJun 2023

Bengaluru

• Designed and optimized production-grade serverless architectures using Lambda, API Gateway, SQS, SNS, covering use cases from real-time event processing to RESTful microservices. • Developed reusable Python-based Lambda function patterns and secure REST API templates adopted by multiple enterprise customers to accelerate their serverless migrations. • Diagnosed and resolved complex cold start, timeout, and concurrency issues in Lambda workloads using CloudWatch Logs Insights, X-Ray distributed tracing, and custom metrics. • Resolved 130+ high-impact complex issues spanning Lambda, API Gateway, and IAM; maintained a 95%+ CSAT rating through clear root-cause analysis and actionable guidance. • Created and delivered internal technical training modules on AWS serverless best practices, covering Lambda execution model, API Gateway stages, VPC integration, and cost optimization strategies. • Evaluated and optimized Lambda-based event-driven pipelines for throughput, cost, and reliability — applying patterns such as SQS batching, Lambda Destinations, and provisioned concurrency to meet enterprisegrade SLAs. • Built and demonstrated reference serverless architectures using Lambda, API Gateway, DynamoDB, and EventBridge, serving as reusable blueprints that reduced customer time-to-production for new serverless workloads by 40%. • Collaborated with AWS service teams to escalate and reproduce customer-reported bugs, contributing to service improvements in Lambda and API Gateway. • Authored internal runbooks and customer-facing documentation for common serverless architecture patterns, reducing escalation rates for recurring issue categories by 30%. • Mentored 5+ junior engineers on AWS serverless debugging techniques, Lambda and API Gateway troubleshooting, helping them work independently within their first 60 days.
Ribbon Communications
May 20165 yrs 5 mosSep 2021

• Automated operational workflows using shell/bash/Python scripting, improving efficiency by 30%. • Provided Tier 3 support for large-scale production networking systems. • Led troubleshooting and root cause analysis for mission-critical systems. • Automated operational workflows using Python and Shell scripting, reducing manual intervention by 30% and improving team throughput for routine network provisioning and maintenance tasks. • Provided Tier 3 escalation support for large-scale production networking systems, handling critical incidents with strict SLA adherence across global enterprise and carrier customers. • Led root cause analysis (RCA) and post-incident reviews for mission-critical infrastructure, producing detailed reports and permanent fix recommendations to prevent recurrence. • Developed and maintained internal Python tools for log parsing, alarm correlation, and diagnostic data collection, cutting average troubleshooting time by 25%. • Collaborated with cross-functional teams (NOC, product engineering, QA) to triage andresolve high-severity bugs in Applications like EMS and NMS Management Systems. • Monitored performance KPIs (latency, jitter, etc) using vendor NMS tools and custom dashboards, proactively identifying degradation before customer impact. • Documented standard operating procedures (SOPs), troubleshooting guides, and knowledge base articles that reduced onboarding time for new engineers by 20%. • Developed and maintained a troubleshooting knowledge base used by the broader support team, cutting average case resolution time and serving as a go-to reference for NMS/EMS applications. • Supported software upgrade planning and execution across a fleet of 10+ customers, coordinating maintenance windows with customers and validating system health post-upgrade. • Informally mentored 5+ network engineers on EMS/NMS troubleshooting methodologies, and log analysis techniques, reducing their dependency on senior escalations within 3 months.
ECI Telecom
Aug 20159 mosApr 2016

Airoli, Navi Mumbai

Understanding service provider technologies, L2VPN, MPLS, WAN, LAN.

Education

K. J. Somaiya Institute of Technology

Bachelor of Engineering (BEng), Electronics and Telecommunication Engineering

K. J. Somaiya Institute of Technology

20105 yrs2015
Sri chaitanya

Intermediate, Junior High/Intermediate/Middle School Education and Teaching

Sri chaitanya

20082 yrs2010

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Headline

Gen AI - Python developer || AWS Cloud

About

Python Developer with 9+ years of experience in IT and 4+ years experience in building scalable backend systems and AI-driven applications on AWS using LLMs. Strong expertise in LLM integration, knowledge graphs (Neo4j), vector search, and AWS serverless architecture. Experienced in designing production-grade eventdriven systems with focus on scalability, security, and performance.

Location

Maharashtra

Work experience

Specialist - Cloud Engineering (Python developer - AI) at LTM (Previously LTIMindtree), Feb 2024 - Jun 2026 · 2 yrs 5 mos, Navi Mumbai, Client: Electronic Arts (EA) Title: Python developer • Designed and implemented a knowledge graph-based architecture using Neo4j to model complex entity relationships across game assets, player profiles, and content metadata, enabling rich graph traversal queries that reduced lookup latency by 40%. • Integrate LangChain to build production-grade RAG pipelines, grounding AI responses strictly in internal knowledge bases to ensure accuracy and compliance. • Designed and maintained Private REST APIs on Amazon API Gateway with resource-level IAM authorization, API key management, and Authorizers (Lambda/Cognito) to control access across internal services and external game clients. • Experience in AWS serverless patterns like API Gateway, AWS Lambda, and LangChain RAG pipelines, and Neo4j graph modeling. • Worked on AI-enabled backend systems on AWS integrating Lambda, API Gateway, RDS, S3, and Neo4j, supporting 10,000+ daily active users across scalable knowledge-driven applications

Cloud Engineer at Amazon Web Services (AWS), Sep 2021 - Jun 2023 · 1 yr 10 mos, Bengaluru, • Designed and optimized production-grade serverless architectures using Lambda, API Gateway, SQS, SNS, covering use cases from real-time event processing to RESTful microservices. • Developed reusable Python-based Lambda function patterns and secure REST API templates adopted by multiple enterprise customers to accelerate their serverless migrations. • Diagnosed and resolved complex cold start, timeout, and concurrency issues in Lambda workloads using CloudWatch Logs Insights, X-Ray distributed tracing, and custom metrics. • Resolved 130+ high-impact complex issues spanning Lambda, API Gateway, and IAM; maintained a 95%+ CSAT rating through clear root-cause analysis and actionable guidance. • Created and delivered internal technical training modules on AWS serverless best practices, covering Lambda execution model, API Gateway stages, VPC integration, and cost optimization strategies. • Evaluated and optimized Lambda-based event-driven pipelines for throughput, cost, and reliability — applying patterns such as SQS batching, Lambda Destinations, and provisioned concurrency to meet enterprisegrade SLAs. • Built and demonstrated reference serverless architectures using Lambda, API Gateway, DynamoDB, and EventBridge, serving as reusable blueprints that reduced customer time-to-production for new serverless workloads by 40%. • Collaborated with AWS service teams to escalate and reproduce customer-reported bugs, contributing to service improvements in Lambda and API Gateway. • Authored internal runbooks and customer-facing documentation for common serverless architecture patterns, reducing escalation rates for recurring issue categories by 30%. • Mentored 5+ junior engineers on AWS serverless debugging techniques, Lambda and API Gateway troubleshooting, helping them work independently within their first 60 days.

Senior Tier 3 TAC Engineer at Ribbon Communications, May 2016 - Sep 2021 · 5 yrs 5 mos, • Automated operational workflows using shell/bash/Python scripting, improving efficiency by 30%. • Provided Tier 3 support for large-scale production networking systems. • Led troubleshooting and root cause analysis for mission-critical systems. • Automated operational workflows using Python and Shell scripting, reducing manual intervention by 30% and improving team throughput for routine network provisioning and maintenance tasks. • Provided Tier 3 escalation support for large-scale production networking systems, handling critical incidents with strict SLA adherence across global enterprise and carrier customers. • Led root cause analysis (RCA) and post-incident reviews for mission-critical infrastructure, producing detailed reports and permanent fix recommendations to prevent recurrence. • Developed and maintained internal Python tools for log parsing, alarm correlation, and diagnostic data collection, cutting average troubleshooting time by 25%. • Collaborated with cross-functional teams (NOC, product engineering, QA) to triage andresolve high-severity bugs in Applications like EMS and NMS Management Systems. • Monitored performance KPIs (latency, jitter, etc) using vendor NMS tools and custom dashboards, proactively identifying degradation before customer impact. • Documented standard operating procedures (SOPs), troubleshooting guides, and knowledge base articles that reduced onboarding time for new engineers by 20%. • Developed and maintained a troubleshooting knowledge base used by the broader support team, cutting average case resolution time and serving as a go-to reference for NMS/EMS applications. • Supported software upgrade planning and execution across a fleet of 10+ customers, coordinating maintenance windows with customers and validating system health post-upgrade. • Informally mentored 5+ network engineers on EMS/NMS troubleshooting methodologies, and log analysis techniques, reducing their dependency on senior escalations within 3 months.

Project Intern at ECI Telecom, Aug 2015 - Apr 2016 · 9 mos, Airoli, Navi Mumbai, Understanding service provider technologies, L2VPN, MPLS, WAN, LAN.

Education

Bachelor of Engineering (BEng), Electronics and Telecommunication Engineering, K. J. Somaiya Institute of Technology

Intermediate, Junior High/Intermediate/Middle School Education and Teaching, Sri chaitanya