Node Web3 Jobs in California, United States

352 jobs found

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Job Position Company Posted Location Salary Tags

SMASH

San Jose, CA, United States

$96k - $112k

Perle

San Francisco, CA, United States

$84k - $90k

Kiva Ai

San Francisco, CA, United States

$84k - $90k

Kraken

San Francisco, CA, United States

$173k - $289k

D3

San Francisco, CA, United States

$122k - $150k

Bitgo

Palo Alto, CA, United States

$150k - $180k

Culldron

Los Angeles, CA, United States

$81k - $112k

Nexus

San Francisco, CA, United States

$84k - $110k

Nexus

San Francisco, CA, United States

$98k - $120k

Nexus

San Francisco, CA, United States

$90k - $90k

SYNCFAB

Los Angeles, CA, United States

$84k - $100k

Consensys

Remote

$138k - $225k

BuildBear Labs

San Francisco, CA, United States

$98k - $110k

Nexus

San Francisco, CA, United States

$62k - $80k

BitGo

Palo Alto, CA, United States

$165k - $210k

SMASH
$96k - $112k estimated
CA San Jose US

SMASH, Who we are?

We are agents for tech professionals in Costa Rica and Colombia that help them build careers in the United States.

We believe in long-lasting relationships with our talent. We invest time getting to know them and understanding what they seek as their professional next step.

We aim to find the perfect match. As agents, we pair our talent with our US clients, not only by their technical skills but as a cultural fit. Our core competency is to find the right talent fast.

We purposefully move away from the “contractor” or “outsourcing” type of relationship. Our clients don’t want contractors or “just a service.” Neither does our talent.

Our Benefits

  • Wellness Coverage
  • Remote Work
  • Birthday day off
  • Recognition and rewards system
  • Referrals Program
  • Business skill coaching
  • English classes for Smashers and relatives
  • Learning opportunities

This is a remote position for Costa Rica and Colombia.

This position is Remote to work with a US Company; you will require to have Citizenship or a work permit from Costa Rica or Colombia to apply for this role.

Responsibilities:

  • Develop backend logic using Node.js and Express.js.
  • Implement real-time gameplay with WebSocket/Socket.IO for multiplayer chess matches.
  • Build APIs for matchmaking, player stats, leaderboards, tournaments, and authentication.
  • Integrate backend with Ethereum smart contracts for tokens/NFT operations.
  • Manage database, caching, and performance optimization.

Tech Stack / Tools:

  • Node.js, Express.js
  • MongoDB, Redis
  • JWT (Authentication/Authorization)
  • Web3.js / Ethers.js (Server-side)
  • AWS S3 / Cloudinary (media uploads)
  • Bcrypt.js (secure passwords)
  • Nodemailer / SendGrid (emails)
  • Cron Jobs (Node-cron)
  • Ethereum (ERC-20 & ERC-721 standards), Solidity, Hardhat
  • Alchemy / Infura, IPFS, Pinata
  • OpenZeppelin Contracts

Great to Have (Third-Party APIs):

  • WalletConnect API – seamless wallet integration (MetaMask, Trust Wallet, etc.).
  • CoinGecko / CoinMarketCap API – real-time token price data.
  • Moralis API – blockchain indexing, authentication, and on-chain event tracking.
  • Firebase Cloud Messaging (FCM) – push notifications for matches and tournaments.
  • Sentry API – error tracking and performance monitoring.
  • Google OAuth / Apple Sign-In – user onboarding/authentication.
  • ReCAPTCHA API – bot prevention in registration/login.
  • Mailgun / SendGrid API – transactional email delivery.
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