Summary
Work History
Education
Skills
Timeline
Generic

Vignesh Suresh

Chennai

Summary

Software engineer with over 8 years of experience in developing distributed systems and identity platforms.
Achieved 300% increase in email throughput and $10 million in annual savings through card platform
modernization. Designed and implemented passkey and MFA systems, enhancing security for millions of
user accounts.

Work History

Sr Software Engineer (Tech Lead)

HealthEquity | April 2023 - Present
  • Led a team of 5 engineers owning identity, authentication, and enrollment for the HSA platform. Set the technical roadmap, drove sprint planning, and partnered with product, security, and compliance on priorities.
  • Mentored 4 engineers and ran design reviews for the identity platform, speeding up new engineers' ramp-up on identity and HSA domain knowledge.
  • Architected an identity verification platform integrating Prove Instant Link, SMS OTP authentication, and automated profile prefill, driving a 375% increase in new enrollments while strengthening fraud prevention.
  • Headed the passkey and MFA rollout across 5+ teams and 4 vendor integrations (Transmit Security, Prove, Twilio/SendGrid, LexisNexis), including a trusted-device fallback for registration failures. Secured 100K+ new HSA accounts in 2026 and automated KYC/AML compliance checks.
  • Owned the backend architecture for IFP HSA enrollment orchestration, delivering personalized flows across multiple account states and improving enrollment conversion by 25%.
  • Directed the migration of millions of accounts from TSYS to Fiserv with zero data loss, coordinating 3 internal teams and 2 vendors, contributing to $10M in annual operational savings.
  • Re-architected the communications platform from monolith to microservices, handling 3.2M actions/day with 300% higher throughput and zero high-severity incidents.
  • Introduced AuthEventRecorder, a distributed event-processing service providing real-time authentication analytics and system health tracking for the identity platform.
  • Delivered "Red Flag" fraud alerting to notify customers of suspicious account activity, and reduced log noise for on-call engineers by sanitizing observability signals.

Software Engineer

Amazon | August 2022 - March 2023
  • Developed Infrastructure-as-Code (IaC) using AWS CDK to automate deployment pipelines, improving monitoring coverage and minimizing deployment errors.
  • Executed load testing and tuned performance for warehouse-inventory APIs, leading to reduced latency and increased Transactions Per Second (TPS) capacity.
  • Built integration and unit test suites to ensure reliability of complex warehouse lifecycle state transitions.

Application Engineer

Tesla | December 2019 - August 2022
  • Designed automated archival system for millions of records, reducing production database storage overhead while enhancing query performance.
  • Optimized complex SQL queries for high-traffic internal platforms (PCA, MTT, BOM), decreasing execution time and lowering server load.

Software Engineer

TCS | October 2019 - December 2019
  • Developed Appointment Center module to enable digital scheduling for millions of patients and modernize legacy scheduling workflows.

Back End Software Engineer

Star 8 Financial | July 2018 - July 2019
  • Developed financial REST APIs and real-time fraud monitoring pipelines for high-value KYC workflows to enhance transaction security.
  • Implemented behavior-based fraud detection algorithms to analyze device fingerprints and email patterns, strengthening fraud prevention measures.

Software Developer Intern

Bio-Rad Laboratories | July 2017 - October 2017
  • Developed Azure-hosted recommendation engine generating ~$300M in revenue and created Grok patterns for complex log data extraction.

Software Developer

United Resources | January 2016 - June 2016
  • Developed Copiers Bill, an automated billing and financial tracking system that streamlined financial processes for businesses.
  • Designed mBuddy, a cross-platform supplier management app to enhance bulk purchasing capabilities for organic products.

Education

M.S., Computer Science | California State University, Long Beach  B.E., Computer Science | Anna University (India)

Skills

  • Languages & Core: Java, C#, Python, TypeScript, SQL, REST APIs, Microservices, Event-Driven Architecture
  • Cloud & Infrastructure: AWS (CDK, DynamoDB), Azure (Cosmos DB, AI), Docker, Kubernetes
  • Data & Observability: SQL Server, MongoDB, Dynatrace, Grafana, Splunk, Mosaic
  • Certifications: Microsoft Azure AI Engineer Associate (AI-102), Azure Developer Associate (AZ-204), AWS Technical Essentials

Timeline

Software Developer

United Resources | January 2016 - June 2016

Software Developer Intern

Bio-Rad Laboratories | July 2017 - October 2017

Back End Software Engineer

Star 8 Financial | July 2018 - July 2019

Software Engineer

TCS | October 2019 - December 2019

Application Engineer

Tesla | December 2019 - August 2022

Software Engineer

Amazon | August 2022 - March 2023

Sr Software Engineer (Tech Lead)

HealthEquity | April 2023 - Present
Vignesh Suresh