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Trainee Smart Contracts Developer Jobs in California

Zeeve Inc

Blockchain Trainee

Irvine, CA · On-site

We are looking for a motivated Blockchain Trainee to join our team and learn hands‑on development ... smart contracts * Work with senior engineers to understand blockchain architectures (Ethereum ...

De Circle

Odos - Backend Engineer

San Francisco, CA · On-site +1

Smart Contract Development * Experience with EVM smart contract development using Solidity ... years of backend engineering experience preferred * Comfortable with taking ownership of the ...

De Circle

Semiotic Labs - Rust Engineer

San Francisco, CA · On-site +1

$67.75 - $91/hr

Work closely with smart contract engineers to ensure seamless on-chain integration (mainly on L2s like Arbitrum). * Write clean, testable, and efficient code with a focus on security and correctness.

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Trainee Smart Contracts Developer information

What is the difference between Trainee Smart Contracts Developer vs Junior Blockchain Developer?

AspectTrainee Smart Contracts DeveloperJunior Blockchain Developer
CredentialsBasic understanding of blockchain, coding skills, possibly certifications in blockchain fundamentalsSimilar credentials, often with additional programming or blockchain certifications
Work EnvironmentTraining programs, internships, entry-level projects within blockchain teamsEntry-level roles in blockchain projects, supporting development teams
Industry UsageCommon in blockchain startups, tech firms, and companies exploring smart contract solutionsUsed across blockchain companies, fintech, and decentralized app development

The main difference is that a Trainee Smart Contracts Developer is typically in a learning or internship phase focusing specifically on smart contracts, while a Junior Blockchain Developer has a broader role in blockchain development, often involving multiple blockchain components. Both roles require foundational blockchain knowledge, but the trainee position emphasizes skill development in smart contracts first.

How to become a trainee smart contracts developer?

To become a trainee smart contracts developer, you should learn blockchain fundamentals and programming languages such as Solidity or Vyper. Gaining experience with development tools like Remix, Truffle, or Hardhat and understanding smart contract security are also important. Entry-level roles often require a basic understanding of cryptography and decentralized applications, along with a willingness to learn and adapt quickly.
What are the most commonly searched types of Smart Contracts Developer jobs in California? The most popular types of Smart Contracts Developer jobs in California are:
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Trainee Smart Contracts Developer jobs near you

Odos - Smart Contracts Engineer EVM

De Circle

San Francisco, CA • On-site, Remote

Full-time

Re-posted 15 days ago

Job description

About Us
Odos (odos.xyz) is a smart order routing (SOR) solution that allows users to trade digital assets across decentralized exchanges. Launched in May 2022, Odos is available on 15 EVM chains and uses a patented algorithm to deliver the best swap rates to retail and institutional traders. Our multi-token swap feature allows users to trade many tokens in a single atomic transaction, and our newly launched intent based order types are leading the way in advancing the Web3 user experience. We are headquartered in Los Altos, CA (SF Bay Area).
About the Role
We're looking for a talented Backend / Smart Contract Engineer to help design and build the core infrastructure that powers Odos. You'll work on critical components ranging from backend services and APIs to gas-optimized Solidity contracts and on-chain logic. Your work will directly impact how users and protocols interact with DeFi at scale.
What You'll Do
  • Design and develop backend systems that coordinate complex DeFi interactions, including trade routing, transaction simulation, and analytics.
  • Write, audit, and maintain robust, gas-efficient smart contracts in Solidity.
  • Collaborate with frontend and protocol teams to ensure seamless integration across the Odos stack.
  • Conduct performance profiling, optimize for gas costs and execution time.
  • Stay up to date with the latest DeFi protocols, standards, and smart contract best practices.
  • Lead and participate in code reviews, architecture discussions, and technical planning.
  • Contribute to cross-chain infrastructure and help expand Odos to new blockchains.
  • Write and maintain comprehensive documentation for internal and external use.

3+ years of professional backend engineering experience
  • Strong proficiency in one or more backend languages: Rust, Go, Node.js, or Python.
  • Experience designing scalable APIs, data processing systems, or infrastructure for financial or real-time applications.
  • 2+ years of hands-on experience writing smart contracts in Solidity
    • Proven experience deploying, testing, and maintaining contracts on Ethereum or EVM-compatible chains.
    • Deep understanding of smart contract security, gas optimization, and upgradeability patterns.
  • Solid understanding of DeFi protocols and primitives
    • Familiar with token standards (ERC-20, ERC-721, ERC-1155, ERC-4626), DEXes (Uniswap, Curve, Balancer), and lending protocols (Aave, Compound, etc.).
    • Ability to reason about complex on-chain interactions and liquidity mechanics.
  • Proficient with Web3 development tools
    • Experience using Hardhat, Foundry, Ethers.js, Web3.py, and related frameworks.
    • Comfortable simulating and analyzing Ethereum transactions.
  • Strong systems and architectural thinking
    • Ability to design systems that are performant, resilient, and maintainable across multiple chains and components.
  • Self-driven and collaborative
    • Thrives in a fast-paced, async-friendly startup environment.
    • Comfortable working independently and coordinating across functions (e.g., frontend, product, protocol).

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