Xristina Ho
Xristina Ho

Senior Full-Stack / Product Engineer

Open to offers · Member since 2 Sep 2026
Message
Location
Taiwan
Desired salary
Unspecified
Work preference
Remote Only / Freelance
Experience level
Senior

About

Professional summary

I am a senior full-stack and product engineer with more than nine years of experience building and shipping production web products end-to-end. I specialize in TypeScript, React, Next.js, Python, Django, AWS, and SaaS product development.

I have founding-team experience delivering 0-to-1 AI products and independently owning product areas from problem research and specification through system design, implementation, rollout, and iteration. I am comfortable making product and technical decisions without dedicated product-management support.

At Mirror Mirror AI, I owned subscription, billing, pricing, usage metering, entitlements, and the public website. I designed systems intended to strengthen recurring revenue, implemented Stripe billing and webhook flows, and improved reliability and security in entitlement and API-key handling.

I work across frontend, backend, databases, APIs, cloud deployment, CI/CD, and customer-facing product workflows. My experience includes React and Next.js applications, Django and Celery services, REST APIs, database schema design, query optimization, and AWS-based deployments.

I have supported early-stage customer rollouts with proof-of-concept customers, enterprise customers, and design partners. I turn customer feedback into practical product decisions and have also iterated AI image-generation prompts and workflows.

I am based in Taiwan and open to remote opportunities worldwide. I am interested in senior full-stack, product engineering, and founding-team roles where I can take meaningful ownership of product outcomes.

Skills

16 capabilities

Tech stack & tools

Working toolkit

Collaboration

Data Stores

Design

Development

Experience

Career history

Product Engineer — Founding Team Mirror Mirror AI

I owned product areas end-to-end as a founding-team engineer, from problem research and product and system design through implementation. I built production features using Next.js, React, TanStack Query, Django, Python, and AWS.

I designed and implemented a tiered subscription and credit top-up model, including plan logic, usage metering, entitlements, and Stripe webhook flows. I strengthened entitlement reliability with Django row-level locking and transactional operations, improved API-key comparison security, and built fault-tolerant Celery webhook and licensing pipelines with retries and exponential backoff.

I rebuilt and launched the public company website from zero in three days as the sole engineer. I also supported rollout with proof-of-concept, enterprise, and design-partner customers, translating feedback into product decisions and iterating AI image-generation prompts and workflows.

Software Engineer Freelance

I independently own full-stack delivery across six concurrent client domains, including a delivery-platform administration system, a sports ticketing platform, and a medical-aesthetics appointment platform.

I build REST APIs from scratch, design database schemas, optimize queries, and manage deployment and CI alongside React and Tailwind CSS product development. I work independently across both frontend and backend responsibilities.

Frontend Web Developer mlytics

I owned frontend development for a website acceleration and security platform using Nuxt.js and Vuetify. I built customer-facing interfaces for Multi-CDN, DNS, and video-streaming configuration.

I conceived, designed, and built Hubble Speedtest, a real-time domain-speed and CDN-performance comparison tool used by customer-facing teams to demonstrate service differences with live data. I also built the company Gatsby.js website and its signup and subscription flows.

Frontend Web Developer HaoGuanJia FinTech

I built and maintained web applications for tourism and financial-services products. My work focused on delivering frontend interfaces and integrating them with REST APIs.

I contributed to production web experiences across multiple product domains, maintaining application functionality and supporting ongoing feature development.

Frontend Web Developer Wogogo

I built customer-facing and business-facing sections of a travel e-commerce platform. My work included ordering flows, member-profile experiences, and tour-guide features.

I contributed frontend functionality for core travel-platform user journeys and business operations.

Education

Learning history

Ming Hsin University of Science and Technology

B.S., Computer Science

Bachelor of Science in Computer Science.

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