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Full-stack and systems engineer with production experience building TypeScript/React web applications, Go and Python backend services, and real-time APIs. I focus on understanding requirements, reviewing/testing AI-assisted or generated code, and taking ownership from architecture through delivery. I’ve built a Go control plane for a sharded time-series database and production AI workflows with deterministic CI/testing, schema-validated structured outputs, and persistence/audit boundaries. I’m hands-on with AWS, Docker, GitHub Actions CI/CD, and observability to ship maintainable systems for B2B SaaS, fintech, and AI tooling.…Full-stack and systems engineer with production experience building TypeScript/React web applications, Go and Python backend services, and real-time APIs. I focus on understanding requirements, reviewing/testing AI-assisted or generated code, and taking ownership from architecture through delivery. I’ve built a Go control plane for a sharded time-series database and production AI workflows with deterministic CI/testing, schema-validated structured outputs, and persistence/audit boundaries. I’m hands-on with AWS, Docker, GitHub Actions CI/CD, and observability to ship maintainable systems for B2B SaaS, fintech, and AI tooling.

Zoriah Cocio

Verified

Front-End Developer, Product Designer, Back-End Developer, +3

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Full-stack and systems engineer with production experience building TypeScript/React web applications, Go and Python backend services, and real-time APIs. I focus on understanding requirements, reviewing/testing AI-assisted or generated code, and taking ownership from architecture through delivery. I’ve built a Go control plane for a sharded time-series database and production AI workflows with deterministic CI/testing, schema-validated structured outputs, and persistence/audit boundaries. I’m hands-on with AWS, Docker, GitHub Actions CI/CD, and observability to ship maintainable systems for B2B SaaS, fintech, and AI tooling.…Full-stack and systems engineer with production experience building TypeScript/React web applications, Go and Python backend services, and real-time APIs. I focus on understanding requirements, reviewing/testing AI-assisted or generated code, and taking ownership from architecture through delivery. I’ve built a Go control plane for a sharded time-series database and production AI workflows with deterministic CI/testing, schema-validated structured outputs, and persistence/audit boundaries. I’m hands-on with AWS, Docker, GitHub Actions CI/CD, and observability to ship maintainable systems for B2B SaaS, fintech, and AI tooling.

Available to hire

Tucson, United States

Full-stack and systems engineer with production experience building TypeScript/React web applications, Go and Python backend services, and real-time APIs. I focus on understanding requirements, reviewing/testing AI-assisted or generated code, and taking ownership from architecture through delivery.

I’ve built a Go control plane for a sharded time-series database and production AI workflows with deterministic CI/testing, schema-validated structured outputs, and persistence/audit boundaries. I’m hands-on with AWS, Docker, GitHub Actions CI/CD, and observability to ship maintainable systems for B2B SaaS, fintech, and AI tooling.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Beginner

Language

English

Fluent

Amharic

Intermediate

Aragonese

Advanced

Work Experience

Frontend Developer at Upwork (Independent Contractor)

January 1, 2023 - Present

Delivered a developer tool launch page with GSAP animations, custom typewriter reveal, SVG scroll transitions, and a video loading system. Built AI-powered chat interfaces with streaming APIs (SSE and WebSocket) for client engagements, including token-by-token rendering and image-generation integrations. Built full-stack features for clients: REST APIs in Python and Node.js, schema design across PostgreSQL/MongoDB, and integrated React frontends. Shipped production frontends end-to-end with ownership of scope, architecture, performance tuning, and post-launch handoff.

Senior Frontend Developer at ICR

January 1, 2022 - December 1, 2023

Architected a 40+ component React/TypeScript library with Storybook, standardizing UI across multiple product surfaces. Built Python backend services and REST APIs powering features, with PostgreSQL data models and MongoDB for document-heavy workloads. Implemented Zustand and React Query for state management, reducing API calls by 35% on high-traffic flows. Led code reviews, established ESLint rules, and mentored 3 junior developers.

Independent Full-Stack Engineer at Zoriah Cocio

January 1, 2019 - Present

Delivered production web applications for 50+ client engagements across B2B SaaS, fintech, and AI tooling. Owned end-to-end scope: architecture, implementation, testing, and delivery. Built TypeScript/React frontends and backend services in Go, Node.js, and Python; designed REST, WebSocket, and SSE integrations for real-time and high-throughput workloads. Developed AI-powered workflows with server-side schema validation, deterministic mock modes for CI, eval/regression fixtures, and persistence plus audit/history layers. Used modern AI coding assistants to accelerate work while reviewing, testing, debugging, and ensuring I retained ownership of generated changes prior to integration. Produced documentation including architecture notes, setup/deployment instructions, and handoff materials for maintainability.

Frontend Developer at APRE Instrumental

January 1, 2019 - December 1, 2021

Built pixel-perfect responsive interfaces and interactive marketing microsites from product designs using CSS Grid, Flexbox, and SCSS. Developed Node.js and Python services with Firebase/Supabase backends, delivering full-stack features end-to-end. Created a zero-dependency form validation library with ARIA support and async validators, increasing accessibility and reliability; partnered with UX teams to refine user flows, boosting conversion rates by 22%.

Full-Stack Engineer at APRE Instruments

June 1, 2018 - December 31, 2021

Built and integrated web and backend systems, custom CMS functionality, e-commerce flows, and third-party API integrations. Implemented secure payment and service integrations and optimized data flow across web and mobile-facing systems. Created implementation and deployment documentation and collaborated with stakeholders to translate requirements into shipped features.

Frontend Developer Intern at APRE Instrumental

May 31, 2018 - May 31, 2019

Shipped production frontend features alongside the engineering team, ramping to full ownership of client-facing UI work within the year.