Senior ETL / Data Platform Engineer

JIN LIN

*** **** **** ******, *** York, NY ***** *********@*****.*** 682-***-****

SUMMARY

Senior Full-Stack Engineer with 10+ years of experience designing and delivering scalable web and mobile products across startups and enterprise environments. Combines deep full-stack expertise — spanning React, TypeScript, Node.js, and cloud infrastructure — with a growing specialization in AI engineering, including RAG systems, conversational AI, and ML model integration. Equally comfortable leading architecture decisions, shaping engineering culture, and shipping production- grade software end to end.

EXPERIENCE

Lead Software Engineer · Finresi Aug 2025 – Mar 2026 Full-stack vacation rental and real estate investment platform

Architected and led development of a full-stack marketplace combining vacation rental and property investment features for retail users and administrators, built on React, TypeScript, NestJS, and PostgreSQL.

Designed a modular, scalable backend using NestJS and TypeORM, incorporating JWT authentication, cron-based automation, and role-based access control to support complex multi-user workflows.

Built a responsive React/TypeScript frontend with Redux Toolkit, React Query, and Tailwind CSS, covering property browsing, booking flows, and investor dashboards.

Integrated Stripe and Plaid for multi-channel payment processing — including credit card, ACH, and automated monthly profit distribution — alongside Twilio SMS authentication and document signing workflows for regulatory compliance.

Delivered a comprehensive admin dashboard featuring Excel/PDF financial reporting, user management, loan pipeline tracking, and property data scraping tooling.

Managed cloud infrastructure via AWS S3 and integrated Google Maps API for geocoding and location-based property search.

Established coding standards, led cross-functional code reviews, and drove alignment across engineering stakeholders.

Senior Product Engineer · Vizcom Jan 2022 – Aug 2025 AI-powered design platform for fashion and product designers

Built a multi-tool AI design suite spanning product image generation, virtual try-on, sketch- to-render, multi-view generation, lifestyle imagery, tech drawings, and image mixing.

Developed a conversational AI chat interface powered by Gemini for natural-language-driven image generation with multi-turn context and intent interpretation.

Implemented a CLIP embedding-based reference image retrieval service enabling style- aware, context-sensitive generation via Flux models.

Integrated Stripe for subscription billing with webhook handling, seat-based licensing, and usage-based credit management.

Designed an organization-based multi-tenant architecture with role-based access control and team management.

Managed cloud infrastructure with Terraform (AWS S3), CI/CD via GitHub Actions, and deployments to Fly.io and Vercel.

Authored end-to-end tests with Playwright across staging and production environments to ensure deployment reliability.

Backend Engineer · Qloo Sep 2018 – Nov 2021 AI-driven taste and cultural recommendation platform

Built and maintained APIs for Qloo's Taste AI platform, delivering real-time, privacy- compliant recommendations across entertainment, dining, travel, and fashion.

Partnered with data scientists to integrate ML models into production APIs, reducing recommendation latency by 20%.

Owned backend integrations for enterprise clients including Starbucks and JCDecaux, enabling hyper-local content targeting and cultural personalization at scale.

Tuned AWS data pipelines (Lambda, S3, Kinesis) to improve throughput for near-real-time AI inference.

Authored public API documentation, SDKs, and integration guides that significantly accelerated partner onboarding.

Established service monitoring and alerting infrastructure to reduce incident frequency and improve observability.

Software Engineer · Talkspace Jan 2015 – Aug 2018 Mental health telehealth platform

Contributed to a multi-lingual real-time communication and streaming platform built with Next.js, Node.js, GraphQL, PostgreSQL, and TypeScript.

Configured and managed AWS Elastic Load Balancers (ELB) to ensure high availability and fault tolerance across web services.

Improved SEO performance through SSR, SSG, metadata optimization, and responsive, semantically structured, mobile-friendly pages.

Built backend modules for commission tracking, carrier integrations, and plan renewals, reducing billing reconciliation delays.

Collaborated directly with the PM and CTO to translate client requirements into technical direction and delivery plans.

Software Engineering Intern · Infosys Aug 2013 – Dec 2013

Built Angular/JS UI components for CHI's internal tooling modernization, improving front- end responsiveness and reducing maintenance overhead.

Collaborated with cross-functional stakeholders to optimize UI workflows used by thousands of internal staff.

TECHNICAL SKILLS

Languages TypeScript / JavaScript, Python, PHP, C/C++, C#, Java Frontend React, Next.js, Angular, Vue, React Native, ElectronJS Backend Node.js, NestJS, Flask, Django, FastAPI, GraphQL, RESTful APIs AI / ML RAG systems, AI agent design, CLIP embeddings, TensorFlow, neural networks Databases PostgreSQL, MySQL, MongoDB, Redis, Supabase Cloud & Infra AWS (Lambda, S3, Kinesis, ELB), GCP, Azure, Terraform, Docker, Kubernetes CI/CD & Testing GitHub Actions, Jest, Mocha/Chai, Playwright, Puppeteer, Selenium Integrations Stripe, Plaid, Twilio, Google Maps API, Fly.io, Vercel EDUCATION

M.S., Computer Science — Columbia University, New York 2013–2014 B.S., Computer Science — Columbia University, New York 2009–2013

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