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Vishnu User

@vishnuuser12

I build high-performance Java trading and logistics platforms on AWS.

India
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At Barclays, I architect RFQ trading workflows connecting FIX protocol with Tradeweb and Bloomberg for real-time pre-trade operations. I modernize legacy trading components into modular services and improved Kafka performance by 60% through topic scaling and MurmurHash-based partitioning.

I migrated blocking gateway workflows to Spring WebFlux, reducing production end-to-end latency by up to 70%. I also build GraphQL APIs, containerized services on Docker and AWS ECS, and automated application and database releases through GitLab CI/CD.

Previously at Expeditors, I led seven engineers through a logistics booking migration from monolith to microservices, built Kafka pipelines, and strengthened access workflows with Auth0, MFA, and SSO. I bring 10+ years across fintech, trading, logistics, warehouse automation, observability, secure development, and AI-assisted engineering.

Experience

Work history, roles, and key accomplishments

EL

Software Engineer III

Expeditors International Pvt Ltd

Oct 2017 - Dec 2022 (5 years 2 months)

Led a team of 7 engineers in migrating logistics booking applications from monolith to microservices. Integrated Auth0 with MFA and SSO, and designed Kafka-based asynchronous pipelines for high-volume logistics processing.

Education

Degrees, certifications, and relevant coursework

AC

Aksheyaa Engineering College

Bachelor of Engineering, Computer Science

2011 - 2015

Bachelor of Engineering in Computer Science from Aksheyaa Engineering College, Anna University, Chennai, from 2011 to 2015.

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