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React Typescript Jobs in California (NOW HIRING)

Harnham

Software Engineer AI

Hayward, CA · On-site

$190K - $240K/yr

DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter * nsTranslate RAG pipelines and agentic workflows into intuitive, natural ...

Harnham

Software Engineer AI

Sunnyvale, CA · On-site

$190K - $240K/yr

DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter * nsTranslate RAG pipelines and agentic workflows into intuitive, natural ...

Harnham

Software Engineer AI

Alameda, CA · On-site

$190K - $240K/yr

DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter * nsTranslate RAG pipelines and agentic workflows into intuitive, natural ...

Harnham

Software Engineer AI

Sonoma, CA · On-site

$190K - $240K/yr

DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter * nsTranslate RAG pipelines and agentic workflows into intuitive, natural ...

Harnham

Software Engineer AI

San Mateo, CA · On-site

$190K - $240K/yr

DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter * nsTranslate RAG pipelines and agentic workflows into intuitive, natural ...

Harnham

Software Engineer AI

Santa Clara, CA · On-site

$190K - $240K/yr

DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter * nsTranslate RAG pipelines and agentic workflows into intuitive, natural ...

Harnham

Software Engineer AI

Fremont, CA · On-site

$190K - $240K/yr

DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter * nsTranslate RAG pipelines and agentic workflows into intuitive, natural ...

Lovableacademy

Front End Architect

San Francisco, CA · On-site

$120 - $150/hr

The workflow moves between Figma designs, Lovable prototypes, and a production React/TypeScript codebase. You're expected to master "design-to-code" using Lovable, using it alongside Cursor, Copilot ...

Worktrace AI

Founding Frontend Engineer

San Francisco, CA · On-site

$120 - $150/hr

Build beautiful, production‑ready desktop and web experiences with React, Typescript, and CSS * Set the talent and culture standards for Worktrace AI's engineering team You'll excel in this role if ...

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React Typescript information

What is a React TypeScript developer?

React TypeScript developers are software engineers who specialize in building user interfaces using the React JavaScript library combined with TypeScript, a statically typed superset of JavaScript. They leverage TypeScript's type safety to write more reliable and maintainable React components and applications. Their role typically involves creating interactive web applications, ensuring code quality, and collaborating with designers and backend developers. React TypeScript developers are in high demand due to the popularity of both React and TypeScript in modern web development.

What skills and qualifications are needed to thrive as a React TypeScript developer?

To thrive as a React TypeScript Developer, you need a strong grasp of JavaScript, TypeScript, React.js, and a good understanding of front-end development best practices, typically backed by a degree in computer science or related experience. Familiarity with version control systems like Git, modern build tools, and package managers (such as Webpack, npm/yarn), as well as experience with REST APIs and testing frameworks, is essential. Strong problem-solving skills, attention to detail, and effective communication are vital soft skills in this role. These skills ensure robust, maintainable codebases, effective teamwork, and the delivery of high-quality user interfaces.

What are common challenges faced by React TypeScript developers when integrating with backend APIs?

One frequent challenge for React TypeScript developers is ensuring strong type safety when consuming data from backend APIs, especially when API responses can be inconsistent or evolve over time. Developers must often create or update TypeScript interfaces to accurately reflect the shape of the data, handle potential null or undefined values, and use type guards to ensure robustness. Collaborating closely with backend teams and maintaining clear API documentation can help mitigate these challenges and streamline the integration process.

What is the difference between React Typescript vs React JavaScript?

AspectReact TypescriptReact JavaScript
Required CredentialsBasic knowledge of JavaScript, TypeScript fundamentals, optional TypeScript certificationsProficiency in JavaScript, familiarity with React
Work EnvironmentWeb development, front-end projects, teams using TypeScriptWeb development, front-end projects, teams using JavaScript
Industry UsagePopular in enterprise applications, large-scale projectsWidely used across startups and small projects
Search & Comparison IntentDevelopers choosing between React with TypeScript or JavaScriptDevelopers evaluating React with JavaScript or TypeScript

React TypeScript and React JavaScript are both popular choices for front-end development. TypeScript adds static typing to React, improving code quality and maintainability, especially in large projects. JavaScript is more flexible and easier for quick prototyping. The choice depends on project size, team expertise, and specific requirements.

What are popular job titles related to React Typescript jobs in California?

For React Typescript jobs in California, the most frequently searched job titles are:

What job categories do people searching React Typescript jobs in California look for?

The top searched job categories for React Typescript jobs in California are:

What cities in California are hiring for React Typescript jobs?

Cities in California with the most React Typescript job openings:

React Typescript jobs near you
Infographic showing various React Typescript job openings in California as of August 2026, with employment types broken down into 1% As Needed, 87% Full Time, 9% Part Time, and 3% Contract. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution.

Software Engineer AI

Hayward, CA • On-site

Harnham
51 - 200 employees
Learn more about Harnhamexternal

$190K - $240K/yr

Other

Dental, Vision, Retirement, PTO

This job post has expired today. Applications are no longer accepted.

Job description

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity



My client, a fast-growing compliance technology company, is hiring a Software Engineer, AI to own the full-stack development of customer-facing AI features. This is a product engineering role, not platform/infra — you'll turn LLMs, agents, and RAG pipelines into polished experiences like streaming chat, agentic workflows, and intelligent summaries, working closely with AI Engineers, Product, and Design


.
What You'll

  • DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and human-in-the-loop patter
  • nsTranslate RAG pipelines and agentic workflows into intuitive, natural interactio
  • nsPartner with AI Engineers on API contracts; advocate for the user when model outputs break do
  • wnBuild feedback loops that surface AI output quality signal to the broader te
  • amEstablish reusable patterns that speed up future AI feature developme


nt
What You'll Br

  • ing5+ years shipping full-stack features in production; 2+ years on AI-powered product featu
  • resStrong React/TypeScript, plus solid Python/Node
  • .jsHands-on LLM API experience (OpenAI, Anthropic, etc.); understanding of prompt engineering, RAG, and ev
  • alsFamiliarity with agent frameworks (LangGraph, LangChain, or similar) and streaming patterns (SSE/WebSocke
  • ts)Strong product sense and a track record collaborating cross-functionally in ambiguous, fast-moving environme


nts
Bonus: compliance/security/GRC domain experience, MCP or tool-use interfaces, feedback/annotation tooling experie


nce.
Compensation & Ben

efits$190K–$240K base + equity (RSUs), up to 100% employer-paid medical/dental/vision, 401(k), paid parental leave, and flexible


PTO.
Interested or know someone who'd be a great fit? Reach out or send a ref

erral!#Hiring #AIEngineering #SoftwareEngineer #ReactJS #LLM #BayAr


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