Full Stack Developer (Contractor)Expect Technical Staffing • Denver, CO, US

Full Stack Developer (Contractor)

Expect Technical Staffing • Denver, CO, US

[job_card.variable_days_ago]

[job_preview.job_type]

[job_card.full_time]

[job_card.job_description]

Job Description

Seeking a mid- to senior-level Contract Full-Stack Developer with experience in React, state management, and serverless systems. Will be responsible for integrating our current business logic, persistence, and state layer into a newly generated UI, while also contributing to backend services on Firebase and GCP. This role includes working closely with internal code-generation agents, so familiarity with AI-assisted development workflows is highly valued.

Location : Hybrid (Denver) (70% Remote, 30% In Office)

Employment : Contract

Team : Product Engineering

Tech Stack : React 19, Tailwind CSS v4, Firebase / GCP, Cloud Run, LangGraph, Python, TypeScript

Responsibilities

Integrate an existing custom state-management and persistence layer into a newly generated React 19 + Tailwind CSS v4 UI.
Extend, refactor, and optimize generated React components, ensuring clean boundaries between generated and handwritten code.
Work with Firebase / GCP services such as Firestore, Cloud Functions, Cloud Run, and Identity / Auth.
Implement and maintain API layers and data access patterns between the React front-end and Python-based AI agents.
Collaborate with AI engineers using LangGraph-powered agents to ensure front-end workflows align with back-end AI functionality.
Establish development patterns for working with internal code-generation systems and safely merging generated code with custom logic.
Participate in code reviews, architectural discussions, and planning for future releases.

Required Skills & Experience

4+ years of professional experience as a front-end, back-end, or full-stack developer.

Strong expertise in React (preferably React 18 / 19) and component-based architectures.

Solid understanding of TypeScript , state management (React Contexts, Providers, and Hooks, Redux, Zustand, Jotai, or equivalent), and client-side persistence patterns .

Experience with Tailwind CSS (v3 or v4) and modern styling practices.

Experience with Firebase (Firestore, Auth, Functions) or GCP serverless tooling preferred, but other serverless environment (AWS, Azure) experience would be considered.

Familiarity with Python-based microservices , especially on Cloud Run.

Experience working with AI-powered or code-generation agents (e.g., Codex, Copilot, GPT-based tooling, internal codegen systems).

Ability to architect clean interfaces between generated and manual code.

Strong debugging, refactoring, and system-integration skills.

Nice to Have

Exposure to LangGraph , LLM-oriented workflows , or agent orchestration systems.

Experience interfacing with MCP servers

Experience with CI / CD pipelines

Understanding of prompt engineering or AI-driven automation workflows.

Experience working in fast-moving startup environments.

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