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I am Kevin Shen, a Senior Full-Stack Software Engineer with extensive experience building and operating scalable, cloud-native applications across fintech, AI, civic tech, and education platforms. I excel at bridging frontend and backend development, designing high-performance APIs, distributed systems, and data-intensive services, and delivering secure, reliable, user-centric products used by millions in mission-critical environments. I have a proven track record of integrating AI/ML capabilities into end-to-end systems while maintaining performance, security, and operational excellence.…I am Kevin Shen, a Senior Full-Stack Software Engineer with extensive experience building and operating scalable, cloud-native applications across fintech, AI, civic tech, and education platforms. I excel at bridging frontend and backend development, designing high-performance APIs, distributed systems, and data-intensive services, and delivering secure, reliable, user-centric products used by millions in mission-critical environments. I have a proven track record of integrating AI/ML capabilities into end-to-end systems while maintaining performance, security, and operational excellence.

Kevin Shen

Back-End Developer, Full Stack Developer, Cloud Developer, +5

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I am Kevin Shen, a Senior Full-Stack Software Engineer with extensive experience building and operating scalable, cloud-native applications across fintech, AI, civic tech, and education platforms. I excel at bridging frontend and backend development, designing high-performance APIs, distributed systems, and data-intensive services, and delivering secure, reliable, user-centric products used by millions in mission-critical environments. I have a proven track record of integrating AI/ML capabilities into end-to-end systems while maintaining performance, security, and operational excellence.…I am Kevin Shen, a Senior Full-Stack Software Engineer with extensive experience building and operating scalable, cloud-native applications across fintech, AI, civic tech, and education platforms. I excel at bridging frontend and backend development, designing high-performance APIs, distributed systems, and data-intensive services, and delivering secure, reliable, user-centric products used by millions in mission-critical environments. I have a proven track record of integrating AI/ML capabilities into end-to-end systems while maintaining performance, security, and operational excellence.

Available to hire

I am Kevin Shen, a Senior Full-Stack Software Engineer with extensive experience building and operating scalable, cloud-native applications across fintech, AI, civic tech, and education platforms.

I excel at bridging frontend and backend development, designing high-performance APIs, distributed systems, and data-intensive services, and delivering secure, reliable, user-centric products used by millions in mission-critical environments. I have a proven track record of integrating AI/ML capabilities into end-to-end systems while maintaining performance, security, and operational excellence.

Skills

Experience Level

Expert

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Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

AI Collection (Video)

Intermediate

AI Collection (Audio)

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at BairesDev

July 1, 2024 - Present

Led design and delivery of 6+ AI-powered enterprise web applications, collectively supporting 150K-250K monthly active users across fintech, SaaS, and internal tooling platforms. Built full-stack systems using Python, TypeScript, React, and Node.js; integrated real-time inference APIs with median response times under 300 ms. Developed NLP, recommendation, and forecasting models processing 10-50M records per training cycle, improving user task completion rates by 28-45%. Implemented LLM-driven search, summarization, and assistants using embeddings, vector databases, and RAG architectures, reducing manual review time by 35-60%. Designed and operated Kubernetes-based microservices across AWS/GCP/Azure, scaling workloads to 100K+ requests/day while maintaining 99.9% uptime. Built data pipelines for feature extraction, training, and inference; introduced data validation and drift monitoring, reducing model-related incidents by 40%. Mentored 4 engineers, led architecture reviews, and standar

Senior Software Engineer at VotingWorks

February 1, 2023 - June 2, 2024

Designed and shipped secure, auditable election systems used in hundreds of US jurisdictions, supporting thousands of election events with zero critical security incidents. Implemented offline-first full-stack apps (TypeScript, React, Node.js) to support 10K+ election workers in low-connectivity environments; built cryptographically verifiable audit logs enabling 100% traceability for elections. Increased overall system reliability by 45% via rigorous testing, fault injection, and hardware-in-the-loop validation. Expanded automated test coverage from ~50% to 85%, reducing post-release defects by 40%. Led cross-functional delivery with product, QA, and election officials under regulatory deadlines, contributing to on-time certification and deployment.

Software Engineer at Stripe

June 1, 2019 - December 1, 2022

Designed and maintained globally distributed back-end services powering Stripe's payments APIs, processing 10M+ transactions per day and billions of dollars in annual volume. Built features across payments, billing, and internal finance tooling, supporting 100K+ developer and merchant integrations. Reduced API error rates by 30% and improved p95 latency by 20% through performance profiling, caching strategies, and incremental refactors. Improved operational excellence by expanding observability and alerting, contributing to 99.9%+ service availability and a 25% reduction in on-call incidents.

Software Engineer at Clever, Inc.

June 1, 2014 - April 2, 2019

Built and maintained platform services used by 77%+ of US K-12 schools, supporting 15M+ students and educators nationwide. Developed scalable APIs and data pipelines integrating thousands of school districts with 500+ third-party education applications, handling millions of daily data syncs. Implemented authentication, authorization, and data-privacy controls to meet FERPA and student data protection requirements, with zero major data incidents. Delivered user-facing features across district onboarding using React and TypeScript, improving onboarding time by 20-25%. Supported nationwide scale, maintaining 99.9%+ uptime during peak back-to-school traffic.

Senior Software Engineer at BareSDev

July 1, 2024 - Present

Led design and delivery of 6+ AI-powered enterprise web applications, collectively supporting 150K-250K monthly active users across fintech, SaaS, and internal tooling platforms. Built full-stack systems using TypeScript, React, Node.js, and cloud-native architectures across AWS/GCP/Azure. Drove performance, reliability, and security improvements; contributed to architecture and domain modeling across multiple products.

Senior Software Engineer at Stripe

June 1, 2019 - December 1, 2022

Designed and evolved scalable backend services across Java, Go, Ruby, and TypeScript, emphasizing idempotency, consistency, and fault tolerance in distributed financial systems. Delivered features across payments, billing, and internal tooling supporting 100K+ developers and millions of merchant integrations. Reduced API error rates by 30% and improved p95 latency by 20% through performance profiling, caching strategies, and incremental refactors. Expanded observability and alerting, contributing to 99.9%+ service availability and a 25% reduction in on-call incidents.

Senior Software Engineer at BareesDev

July 1, 2024 - Present

Led design and delivery of 6+ AI-powered enterprise web applications, collectively supporting 150K-250K monthly active users across fintech, SaaS, and internal tooling platforms. Built full-stack systems using Python, TypeScript, React, and Node.js, integrating real-time inference APIs with median response times under 300 ms. Designed Kubernetes-based microservices across AWS/GCP/Azure, scaling workloads to 100K+ requests/day while maintaining 99.9% uptime. Built data pipelines for feature extraction, training, and inference; introduced data validation and drift monitoring, reducing model-related incidents by 40%. Mentored 4 engineers, led architecture reviews, and improved onboarding time by 30%.

Software Engineer at Clever Inc.

June 1, 2014 - April 1, 2019

Built and maintained platform services used by 77%+ of U.S. K-12 schools, supporting 15M+ students and educators nationwide. Developed scalable APIs and data pipelines integrating thousands of school districts with 500+ third-party education applications, handling millions of daily data syncs. Implemented authentication, authorization, and data-privacy controls to meet FERPA and student data protection requirements, with zero major data incidents. Delivered user-facing features and internal tools using React and TypeScript, improving district onboarding time by 20–25%. Supported systems operating at nationwide scale, maintaining 99.9%+ uptime during peak back-to-school traffic.