Open to opportunities

Vivek Kumar

@vivekkumar30

Message

Staff full-stack engineer specializing in cloud-native AI event-driven systems.

India

Message

What I'm looking for

I’m looking for a role where I can own system architecture end-to-end—building cloud-native, event-driven platforms with LLM/AI integrations—while optimizing cost, latency, and reliability, and mentoring engineers through strong engineering standards.

I’m a Staff-scope Full-Stack Engineer with 10+ years architecting cloud-native, event-driven systems at scale across AI, contact-center, fintech, media, and healthcare. I owned end-to-end architecture of a real-time call transcription platform integrated with Salesforce, delivering 10× infrastructure cost reduction and 20% transcription accuracy improvement across 1K+ concurrent call streams.

I lead technical direction across teams—driving cross-team decisions and growing engineers from junior to senior—while staying hands-on with full-stack delivery (TypeScript/JavaScript, Angular/React, Node.js, Python, C#) and AWS serverless/event-driven architecture. I also built GPU-based Whisper pipelines, custom vocabulary + speaker diarization improvements, and performance/SEO wins (e.g., PageSpeed score improvements) to consistently optimize cost, latency, and reliability.

Experience

Work history, roles, and key accomplishments

Current

Staff-Scope Senior Engineer

Current

Upland Software

May 2023 - Present (3 years 1 month)

Owned end-to-end architecture of a real-time call transcription platform integrated with Salesforce, cutting infrastructure costs 10× and improving transcription accuracy by 20% across 1,000+ concurrent call streams. Led telephony integrations (Genesys Engage/Cloud), built event-driven Node.js microservices on AWS, and implemented GPU-based in-house Whisper on ECS with WER benchmarking.

TypeScript AWS Lambda API Gateway DynamoDB GraphQL OpenAI Whisper PyTorch ECS Cloudwatch

Senior Software Engineer

Zensar Technologies

Apr 2021 - Apr 2023 (2 years)

Built GDPR/CCPA-compliant data-privacy request workflows, designing multi-stage approval flows and notification pipelines. Also designed global gamification microservices and optimized performance by ~20% through MongoDB schema tuning and bulk processing improvements.

TypeScript MongoDB REST APIs React Angular Redis CI CD

Senior Software Engineer

Kiwi Technologies India Pvt. Ltd.

Jun 2017 - Mar 2021 (3 years 9 months)

Architected low-latency live video streaming using AWS Media Services and S3 with DRM delivery, supporting stable production performance. Built SEO-optimized Angular Universal (SSR) applications that improved PageSpeed from 3→66 (mobile) and 39→95 (desktop), and delivered ERP/healthcare UI features.

S3 React Angular Universal SSR TypeScript WebRTC SEO Optimization MongoDB

Software Engineer

9 Networks Technology

Jan 2015 - Jan 2017 (2 years)

Built full-stack applications using Node.js, MongoDB, and Angular, including real-time communication features with WebRTC for healthcare and e-commerce systems. Gained early experience with scalability and performance challenges that shaped later system-design focus.