Callista fox
@callistafox
AI full-stack developer building scalable, production-ready AI applications with strong frontend and backend expertise.
What I'm looking for
I am an AI full-stack developer with 6+ years of experience delivering AI-driven applications that improve user experience and operational efficiency.
I have architected and deployed AI-integrated backend systems using FastAPI, MongoDB, OpenAI APIs, and AWS SageMaker, supporting real-time inference and high-concurrency workloads while optimizing cost and throughput.
On the frontend I accelerated UI development by adopting component-based React (TypeScript) patterns and Redux, and I have built full-stack solutions with Next.js, Node.js, GraphQL and REST APIs that handled millions of requests per day.
I collaborate closely with cross-functional teams, define technical roadmaps, and manage cloud infrastructure to deliver scalable, maintainable systems; I bring strong problem-solving, effective communication, and a focus on measurable impact.
Experience
Work history, roles, and key accomplishments
AI Full Stack Developer
Dovetail
Jul 2023 - Aug 2025 (2 years 1 month)
Architected and deployed AI-integrated backend systems using FastAPI, MongoDB, and OpenAI APIs supporting real-time inference for up to 1,000 concurrent users and defined technical roadmap balancing latency, scalability, and cost.
Software Engineer
WiseTech Global
Jun 2022 - Sep 2022 (3 months)
Developed TypeScript/Next.js web app and refactored legacy code, configured CI with GitHub Actions and Docker, and built REST/GraphQL endpoints handling 12M+ API calls/day with caching that improved response times 60% and reduced DB load 45%.
Backend Developer
Digital Wallet Group
May 2021 - Aug 2021 (3 months)
Designed database schemas and implemented 14 REST endpoints with TypeScript/Express and MongoDB, deployed serverless FastAPI/Node.js APIs to reduce infrastructure costs and implemented Redis session management to reduce server load.
Backend Intern
CyberAgent
Dec 2019 - Jan 2020 (1 month)
Unified legacy JavaScript projects and streaming services with Docker, automated deployments with Python/Bash scripts to reduce deployment time 20%, and developed Next.js + React SPAs integrated with Node.js/Express services.
Education
Degrees, certifications, and relevant coursework
Osaka University
Bachelor of Science, Computer Science
Completed a Bachelor’s degree in Computer Science with coursework and projects covering software development, databases, and web technologies; graduated in June 2020.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
Skills
Interested in hiring Callista?
You can contact Callista and 90k+ other talented remote workers on Himalayas.
Message CallistaFind your dream job
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!
