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DeFi React

California

About Notebook
Notebook Labs (YC S22) is building the compliance infrastructure to onboard the next trillion dollars of real world assets to DeFi. Notebook uses Zero-Knowledge proofs to let users prove that they satisfy KYC and AML requirements in a private way. Notebook was founded by a group Stanford math and computer science majors who closed their seed round in September 2022.
The Role
Notebook Labs is hiring a full-stack developer to help power the private identity layer for Web3. The role will include writing Javascript and Typescript code for Notebook products that will be used both on browser and server-side applications. This will include using common features of the Web3 development stack. This person will work closely with the core team and will have a crucial role in the growth of Notebook. This person will be expected to come into the Notebook office in Menlo Park 2-3 days per week.
Strong Requirements
3+ years of experience with NodeJS, Typescript, and React. Experience developing on AWS. Ability to stay accountable in a fast-paced environment. Based in the Bay Area. 
Additional Benefits
Knowledge of Solidity. Experience with penetration testing and frontend security. Experience working with small teams.

Software Engineer

US Dollar

Menlo Park

The Role
As Alchemy's first Growth Engineering hire, you will have the opportunity to lead growth and engineering efforts within the company. This position is critical as we are an 0 to 1, product-focused growth group — this means we need a visionary and rockstar engineer to solve complex engineering projects and build awesome products.
You’ll be a key part of our small, but mighty growth team that is responsible for growing Alchemy as sustainably and quickly as possible. You'll be working closely with our world-class product, engineering, design, and sales teams to drive the launch and adoption of products that serve millions of users globally today. You’ll immediately have impact: you’ll solve developer pain points, pioneer new blockchain experiences, and help bring blockchain to the next billion people.
Responsibilities:
<ul>
<li>Lead growth engineering efforts through each step of the funnel to drive customer growth across all channels</li>
<li>Define and own the end-to-end development of user-facing features for blockchain developers</li>
<li>Uphold best practices around code quality and API design</li>
<li>Drive and own growth experiments</li>
<li>Evaluate lift vs impact trade-offs in making data-driven analyses and decisions</li>
<li>Articulate roadmap clearly to wider team</li>
<li>Collaborate with teammates working on design, growth and blockchain infrastructure</li>
</ul>
What We're Looking For:
<ul>
<li>5+ years of software engineering background, with full-stack / front-end experience</li>
<li>Proficiency with TypeScript, React (or equivalent), NodeJS, and the tooling supporting a modern web development stack</li>
<li>Strong product sense</li>
<li>Experience owning, shipping, and iterating on user-facing products and web applications with large user bases</li>
<li>Pride in working on projects to successful completion involving a wide variety of technologies and systems</li>
<li>Capability to stitch together many different services and processes together even if they have not worked with them before</li>
<li>Self-starter attitude and the ability to execute new ideas with autonomy</li>
<li>Ability to find the right balance between perfection and shipping quickly</li>
</ul>
Nice to Haves:
<ul>
<li>Growth engineering experience</li>
<li>Web3 experience</li>
<li>Founded a company</li>
<li>Open-sourced / distributed side projects</li>
<li>Experience in startups</li>
<li>SQL experience</li>
</ul>

Growth Engineer

San Francisco

ABOUT BLOXROUTE bloXroute is the "Flash Boys" for DeFi. It created the first and only high performance blockchain distribution network (BDN) with the best solution for Ethereum, BSC, and Polygon. The bloXroute BDN and DeFi trading tools allow its users to win at crypto trading. The BDN utilizes a global network of servers optimized for network performance.  Nodes access this network through open source gateways and users can access it through the bloXroute public-API. The BDN network propagates blockchain transactions and blocks closer to the speed of light. It provides traders with the speed and reliability required for crypto transactions. bloXroute is the leader in mempool services, block streaming and anything Defi performance. The BDN also allow blockchains to scale by speeding the time it takes to communicate the current state. The BDN fast communication reduce the blocks’ size and frequency limits. This is true for all consensus mechanisms, including Proof of Stake, Proof of Work, and DAGs.We encourage you to apply even if you don't match all of the qualifications listed. <h3>Responsibilities</h3><ul><ul><li>Lead engineering projects and team mates and provide technical architecture and design expertise </li><li>Scale up the blockchain distribution network's core systems</li><li>Create offerings that leverage the speed of the data that passes through the blockchain distribution network </li><li>Integrate our core systems with other blockchains like Ethereum, Binance Smart Chain, Polygon, and other future blockchains on the roadmap </li><li>Work on MEV/mempool services </li><li>Work on low level networking type projects </li></ul></ul><h3>Requirements</h3><ul><ul><li>At least 2 years of experience in leading complex technical projects and other team mates </li><li>At least 3 years of experience with developing backend systems using Python </li><li>At least 3 years of experience with developing frontend systems using React </li><li>Expertise with MySQL and NoSQL databases </li><li>Creative, independent, hardworking mind and a great team player</li><li>Bonus: Interest in blockchains, peer to peer networks, Ethereum nodes, cryptocurrency trading, decentralized financial applications (dApps), various crypto products like arb-bots, liquidations bots, wallets, etc. </li></ul></ul>BENEFITS bloXroute Labs offers competitive salaries, stock options, tokens, healthcare benefits, 401k, flexible PTO, remote work option for its employees. The benefits may vary for each country. We built a highly skilled team of business and engineering minds who are working on challenging complex projects.

Lead Software Engineer (US remote)

Web3 DeFi React jobs in California and other crypto companies

Browse many opportunities Web3 DeFi React Jobs in California at. Apply now. updated June 2026!

Job Title	Company Name	Location	Tags
N Software Engineer	Notebook Labs	📍 Menlo Park	LegalSecurityDeveloperWeb3
Growth Engineer	Alchemy	📍 New York, New York, United States, San Francisco, California, United States	SalesDeveloperEngineeringWeb3
Lead Software Engineer (US remote)	bloXroute Labs		RemoteTradingDeveloperEngineering

Web3 DeFi React Jobs in California

Expired DeFi React Jobs.

Past and filled jobs:

Software Engineer

Notebook Labs

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