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Software Engineer React Typescript Jobs in California

Harnham

Software Engineer AI

San Jose, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

Alameda, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

Sunnyvale, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

Hayward, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

San Francisco, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

Santa Rosa, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

San Mateo, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

Sonoma, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

Fremont, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

Harnham

Software Engineer AI

Santa Clara, CA · On-site

$190K - $240K/yr

Software Engineer, AI - Bay Area (Hybrid) Salary Range: $190,000 - $240,000 base + equity My client ... DoBuild AI-powered features end-to-end (React/TypeScript → Node.js/Python) with streaming and ...

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Software Engineer React Typescript information

What does a software engineer specializing in React and TypeScript do?

A Software Engineer specializing in React and TypeScript is responsible for designing, developing, and maintaining web applications using the React JavaScript library and the TypeScript programming language. They build user interfaces that are interactive, efficient, and scalable, often working closely with designers and backend developers to integrate APIs and ensure a seamless user experience. Their expertise in React helps create dynamic front-end components, while TypeScript adds static typing to JavaScript, reducing bugs and improving code quality. This role also involves code reviews, testing, and keeping up with the latest trends in front-end development.

What are some common challenges faced by software engineers working with React and TypeScript, and how can they be addressed?

Software Engineers using React with TypeScript often encounter challenges such as managing complex type definitions, integrating third-party libraries that may not have robust TypeScript support, and ensuring type safety in rapidly evolving codebases. To address these, engineers should leverage TypeScript's utility types, adopt strict linting rules, and contribute to or use community-maintained type definitions. Collaborating closely with team members through code reviews and shared documentation also helps maintain consistent coding standards and reduces the risk of type-related bugs.

What are the key skills and qualifications needed to thrive as a software engineer specializing in React and TypeScript, and why are they important?

To thrive as a Software Engineer specializing in React and TypeScript, you need strong proficiency in JavaScript/TypeScript, React framework, and sound understanding of web development principles, typically supported by a degree in computer science or related experience. Familiarity with version control systems like Git, package managers (npm/yarn), and development tools such as VS Code and testing frameworks (Jest, React Testing Library) is essential. Excellent problem-solving abilities, attention to detail, and effective communication make someone stand out in this role. These skills and qualities are vital for building robust, maintainable, and scalable web applications in dynamic team environments.

What is the difference between Software Engineer React Typescript vs Frontend Developer React Typescript?

AspectSoftware Engineer React TypescriptFrontend Developer React Typescript
Primary FocusDesigning, developing, and maintaining software applications with a focus on architecture and system integrationImplementing user interfaces and visual elements primarily using React and Typescript
Required SkillsProficiency in React, Typescript, software architecture, and coding best practicesStrong React and Typescript skills, UI/UX design, and frontend development
Work EnvironmentCollaborates across teams, involved in full software development lifecyclePrimarily focused on frontend code, working closely with designers and backend developers

While both roles require React and Typescript expertise, Software Engineer React Typescript typically involves broader responsibilities including system design and architecture, whereas Frontend Developer React Typescript concentrates on building and implementing user interfaces. The choice depends on whether you prefer a more comprehensive engineering role or specialized frontend development.

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

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

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

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

What cities in California are hiring for Software Engineer React Typescript jobs?

Cities in California with the most Software Engineer React Typescript job openings:

Software Engineer React Typescript jobs near you
Infographic showing various Software Engineer React Typescript job openings in California as of August 2026, with employment types broken down into 88% Full Time, 10% Part Time, and 2% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution.

Frontend Engineer (React/TypeScript)

OnHires

San Francisco, CA • Remote

Full-time

Re-posted 2 days ago

Job description

Location: Remote (Europe)
Employment: Full-time

???? About Our Client

Our client is building a cutting-edge AI-powered cryptocurrency trading platform. The product delivers automated trading bots (DCA, Grid, Quantum), portfolio management tools, real-time market data, and multi-exchange integrations (Binance, Bybit, OKX, and others).

Their mission: to provide institutional-grade trading capabilities with consumer-grade UX — making advanced trading accessible, fast, and reliable.

???? What You’ll Do

As a Frontend Engineer, you’ll be at the center of creating an intuitive, high-performance trading experience:

  • Ship real-time trading features in React 18+ with TypeScript.

  • Design data flows with Redux Toolkit, Redux-Saga, and React Query (caching, optimistic updates, real-time sync).

  • Integrate APIs & live feeds via REST + WebSockets for order books, balances, and notifications.

  • Craft responsive UIs with Tailwind CSS + Styled Components, ensuring a seamless mobile-first experience.

  • Deliver rich visuals like candlestick charts, P&L dashboards, and live market visualizations using ApexCharts or similar.

  • Optimize performance with code-splitting, lazy loading, bundle budgets, and profiling.

  • Implement secure auth flows (JWT, OAuth, 2FA) and manage exchange API keys safely.

  • Contribute to internationalization (13+ languages, including RTL).

  • Raise the bar by mentoring peers, reviewing code, and shaping front-end architecture.


????‍???? You’ll Be a Strong Fit If You Have

  • Solid expertise in React (18+) + TypeScript and modern ES2020+.

  • Hands-on experience with Redux Toolkit, Redux-Saga, and React Query in production.

  • Proven work on real-time systems (WebSockets, live market data, large datasets).

  • Experience with charting libraries (ApexCharts, Highcharts, D3, etc.) including live updates.

  • Strong understanding of performance optimization.

  • Awareness of secure authentication flows and API key management.

Leveling guidance:

  • Mid-level: ~3–5 years React/TS experience.

  • Senior-level: 5+ years with architectural or product-wide impact.
    ???? Impact > years of experience: if you can demonstrate senior-level contributions, you’ll be considered at that level.


✨ Bonus Skills

  • Trading/fintech background (order forms, risk, real-time systems).

  • Testing with Jest + React Testing Library.

  • Familiarity with CI/CD pipelines.

  • Monitoring/analytics (Sentry, Datadog, PostHog).

  • Experience with PWAs or Web3/wallet integrations.


???? What Makes You Stand Out

  • Problem-solving mindset in complex, data-heavy contexts.

  • Collaborative and proactive in Agile teams.

  • Clear communication, clean documentation, thoughtful peer reviews.


???? What Success Looks Like

You’ll deliver high-impact features for a global trading audience, ensure the platform is fast, reliable, and secure, and shape the front-end architecture of a product scaling at speed.