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Callista fox

@callistafox

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AI full-stack developer building scalable, production-ready AI applications with strong frontend and backend expertise.

Australia

Message

What I'm looking for

I’m seeking senior full-stack/AI roles where I can architect scalable AI systems, lead cross-functional projects, and optimize cloud infrastructure for performance and cost.

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.

fastAPI Python MongoDB AWS React TypeScript

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%.

TypeScript Next.js REST)GraphQL Docker GitHub Actions CI CD Caching Web Performance REST

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.

TypeScript Node Express fastAPI MongoDB Redis Serverless AWS GCP API Design

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.

Docker Jenkins Python BASH Next.js React JavaScript (Node.Js CI CD

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.