Open to opportunities

Nicholas Wan

@nicholaswan

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Senior full-stack engineer delivering scalable ads, fintech, and ML-integrated platforms.

United States

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What I'm looking for

I seek senior engineering roles building scalable, revenue-impacting products with strong cross-functional impact, ML/LLM integration, and emphasis on reliability, observability, and growth.

I am a senior full-stack engineer with 8+ years building large-scale, revenue-critical ads, fintech, and productivity platforms using React/Next.js, TypeScript, Node.js, Go, C#/.NET, and Python. I focus on shipping resilient features that boost engagement and conversion while aligning engineering, product, and data science on measurable outcomes.

I've architected catalog ingestion and enrichment pipelines, operationalized RAG-driven retrieval and ranking models, and pioneered LLM-powered workflows to improve creative and query understanding for shopping and ads products. My work has supported major launches and measurable improvements in CTR, scalability, and revenue.

I emphasize observability, test-driven development, accessibility (WCAG), and platform resiliency using Docker, Kubernetes, AWS, Terraform, and CI/CD practices. I enjoy mentoring peers, collaborating cross-functionally on compliance and risk, and delivering production systems for millions of users.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Mar 2024 - Present (1 year 8 months)

Orchestrated full-stack development of Shopping Ads and Performance+ surfaces, architected catalog ingestion pipelines and RAG-driven retrieval/ranking models, and launched features that improved ad click-through and monetization on a platform with 550M+ monthly active users.

React Next.js TypeScript Python Go GraphQL Kafka AWS

Software Engineer

Robinhood

Jun 2021 - Jan 2024 (2 years 7 months)

Directed Instant Deposit and funding flows, built risk and fraud microservices, and industrialized ML pipelines to enable instant access while protecting capital and ensuring reliable ledger reconciliation.

React React Native Go Python PostgreSQL Kafka Spark Airflow AWS CI CD

Software Engineer

Nov 2019 - Jun 2021 (1 year 7 months)

Drove Campaign Manager and reporting experiences and backend campaign/targeting services, integrated CTR/conversion models, and built dashboards that powered LinkedIn Marketing Solutions' advertiser tooling at scale.

React AngularJS TypeScript C# .NET Core TensorFlow Kafka Spark Kubernetes AWS

Software Engineer

Evernote

Apr 2017 - Oct 2019 (2 years 6 months)

Delivered advanced web client features and modernized sync/storage services during migration to Google Cloud, moving multiple petabytes of user data while maintaining service reliability for millions of users.