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Internship Smart Contracts Developer Jobs in California

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.

De Circle

Reins - Fullstack Engineer

San Francisco, CA · On-site +1

Product/frontend contributor (optional) Focus areas are prioritized as follows: security & smart contracts, full-stack, backend, and product/frontend. Infrastructure/devops is not a current priority.

Orbofi

Designing, implementing, and maintaining scalable and secure smart contracts on EVM-based blockchains * Collaborating with cross-functional teams, including AI/ML engineers, product managers, and ...

IESF AG

Senior Web3 Back End Engineer

San Francisco, CA · On-site +1

The company is growing its valued engineering team and we are looking for a skilled Senior Web3 ... Strong experience integrating with protocols and smart contracts, including complex transaction ...

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Internship Smart Contracts Developer information

What is an Internship Smart Contracts Developer?

An Internship Smart Contracts Developer is a student or entry-level professional who works with blockchain technology to design, code, test, and deploy smart contracts during an internship. Smart contracts are self-executing digital agreements written on blockchain platforms like Ethereum. As an intern, you'll learn to use relevant programming languages (such as Solidity), collaborate with blockchain teams, and gain practical experience in decentralized application (dApp) development. This role is ideal for those interested in blockchain, cryptography, and innovative financial technologies.

What is the difference between Internship Smart Contracts Developer vs Blockchain Developer?

AspectInternship Smart Contracts DeveloperBlockchain Developer
CredentialsBasic understanding of blockchain, smart contracts, coding skillsAdvanced blockchain knowledge, certifications, programming expertise
Work EnvironmentInternship setting, entry-level projects, collaborative teamsFull-time roles, complex project development, innovative environment
Industry UsageUsed in blockchain startups, tech companies, educational projectsUsed across finance, supply chain, enterprise solutions

Internship Smart Contracts Developers are typically students or entry-level individuals gaining hands-on experience with smart contract coding. Blockchain Developers are more experienced professionals working on complex blockchain solutions. The internship role offers foundational exposure, while the blockchain developer role involves advanced development tasks.

What are the key skills and qualifications needed to thrive as an Internship Smart Contracts Developer, and why are they important?

To succeed as an Internship Smart Contracts Developer, you need a solid understanding of blockchain fundamentals, programming skills (especially in Solidity or similar languages), and a background in computer science or a related field. Familiarity with Ethereum development tools like Remix, Truffle, Hardhat, and version control systems such as Git is typically required. Strong problem-solving abilities, attention to detail, and effective communication are valuable soft skills for collaborating with teams and ensuring code quality. These skills are essential for developing secure, efficient smart contracts and contributing to blockchain projects in a fast-evolving tech environment.

What are some common challenges faced by Internship Smart Contracts Developers, and how can they be overcome?

Internship Smart Contracts Developers often encounter challenges such as understanding complex blockchain protocols, ensuring code security, and debugging decentralized applications. Navigating new languages like Solidity and adhering to best practices for secure smart contract development can be daunting. To overcome these, interns should leverage code reviews, participate in team discussions, and regularly consult up-to-date documentation. Collaborating closely with experienced developers and actively seeking feedback can greatly accelerate learning and reduce the risk of costly errors.
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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Internship Smart Contracts Developer jobs near you
Infographic showing various Internship Smart Contracts Developer job openings in California as of July 2026, with employment types broken down into 1% As Needed, 78% Full Time, 6% Part Time, and 15% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution.

Odos - Smart Contracts Engineer EVM

De Circle

San Francisco, CA • On-site, Remote

Full-time

Re-posted 9 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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