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Solidity Smart Contract Developer Jobs in California

Mesh

Head of Engineering, Onchain

San Francisco, CA

Overview We're hiring a Head of Engineering to lead our Full-Stack Web3 team building the products ... smart contracts/on-chain interactions (Solidity). * Solid fundamentals in building scalable ...

Anza

Software Engineer, Security

San Francisco, CA · Remote

$180K - $300K/yr

Conduct advanced security research on Solana and other Rust-based smart contract platforms. * Work ... software engineering experience related to complex distributed systems, either on the design ...

Lunar Labs

Backend Engineer

San Mateo, CA · On-site

Preferred : • Experience working with complex DeFi or financial smart contract systems, including ... engineering competitions. • Formal education in computer science or equivalent practical ...

Circle

Senior Counsel, Arc

Los Angeles, CA · On-site +1

$230K - $297K/yr

Partner with Product, Engineering, Compliance, and Policy to shape blockchain features and smart contract structures aligned with applicable laws. * Design and implement legal policies, protocols ...

Circle

Senior Counsel, Arc

San Francisco, CA · On-site +1

$230K - $297K/yr

Partner with Product, Engineering, Compliance, and Policy to shape blockchain features and smart contract structures aligned with applicable laws. * Design and implement legal policies, protocols ...

Circle

Senior Counsel, Arc

San Diego, CA · On-site +1

$230K - $297K/yr

Partner with Product, Engineering, Compliance, and Policy to shape blockchain features and smart contract structures aligned with applicable laws. * Design and implement legal policies, protocols ...

Robinhood

Senior Software Engineer, Tokenization

Menlo Park, CA · On-site

$144K - $190K/yr

As a Senior Software Engineer , you will design and build the core systems that issue, custody, and ... Working knowledge of blockchain fundamentals - EVM, smart contracts, wallets, on-chain settlement ...

New

Perfict

Senior Blockchain Engineer (X2)

Mountain View, CA · On-site

$145K - $192K/yr

They are seeking a Senior Blockchain Engineer to architect and implement the blockchain foundation ... smart contracts, and distributed systems powering BioMatrix.ai. • Develop tokenized payment ...

Perfict

Senior Blockchain Engineer (X2)

Irvine, CA · On-site

$129K - $171K/yr

They are seeking a Senior Blockchain Engineer to architect and implement the blockchain foundation ... smart contracts, and distributed systems powering BioMatrix.ai. • Develop tokenized payment ...

Worky

Director of Engineering, Onchain

San Francisco, CA · On-site

$210K - $300K/yr

Overview We're hiring a Director of Engineering to lead our Full-Stack Web3 team building the ... smart contracts/on-chain interactions (Solidity). * Solid fundamentals in building scalable ...

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All JobsSolidity Smart Contract Developer JobsSolidity Smart Contract Developer Jobs in California

Solidity Smart Contract Developer information

What is a Solidity smart contract developer?

Solidity Smart Contract Developers are professionals who specialize in writing, testing, and deploying smart contracts using the Solidity programming language, primarily for the Ethereum blockchain. They design secure, automated agreements that execute specific actions when predefined conditions are met. Their responsibilities include auditing code, optimizing contract efficiency, and ensuring the security and reliability of decentralized applications (dApps). These developers play a crucial role in the blockchain ecosystem by enabling trustless interactions and decentralized finance (DeFi) solutions.

What are the key skills and qualifications needed to thrive as a Solidity smart contract developer?

To thrive as a Solidity Smart Contract Developer, you need a strong understanding of blockchain fundamentals, proficiency in the Solidity programming language, and experience with Ethereum-based development. Familiarity with tools like Truffle, Hardhat, Remix, and version control systems, as well as knowledge of smart contract security best practices and relevant certifications, is often expected. Attention to detail, problem-solving skills, and effective communication help developers navigate complex logic and collaborate with cross-functional teams. These capabilities are crucial for building secure, reliable, and efficient smart contracts that power decentralized applications.

How does a Solidity smart contract developer typically collaborate with auditors and other team members during the development process?

Solidity Smart Contract Developers work closely with auditors, project managers, and frontend engineers to ensure contracts are secure, efficient, and user-friendly. During development, they often participate in code reviews, provide detailed documentation, and address vulnerabilities identified by internal or external security audits. Effective communication and openness to feedback are essential, as developers must explain their logic and quickly implement recommended changes. This collaborative approach helps ensure the reliability and safety of deployed smart contracts, which is critical in blockchain environments.

What cities in California are hiring for Solidity Smart Contract Developer jobs?

Cities in California with the most Solidity Smart Contract Developer job openings:

Infographic showing various Solidity Smart Contract Developer job openings in California as of August 2026, with employment types broken down into 67% Full Time, 28% Part Time, 1% Temporary, and 4% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

Software Engineer: Tools for Humanity

San Francisco, CA • On-site

WiredCurrencies
See more jobs at WiredCurrenciesexternal

$191K - $225K/yr

Other

Medical, Dental, Vision, Life, Retirement

Posted 5 days ago

Job description

Role

Software Engineer, Crypto Platform

Employer

Tools for Humanity (TFH)

Location

San Francisco

Employment type

Full-Time

Salary

$191,000 to $225,000 plus a competitive long-term incentive package

Benefits
  • Healthcare
  • dental
  • vision
  • 401(k) plan and match
  • life insurance
  • flexible time off
  • commuter benefits
  • professional development stipend

Tools for Humanity is hiring a Software Engineer, Crypto Platform for a full-time engineering role based in San Francisco. The position builds backend and blockchain infrastructure for transaction execution, state access, calldata, smart contracts, and event ingestion. The employer lists compensation of $191,000 to $225,000 plus a competitive long-term incentive package.

The engineer works with Go, Rust, and TypeScript across World Chain platform services. The work includes deployment ownership, monitoring, incident response, RPC resilience, transaction simulation, and indexing. The role is aimed at blockchain professionals with production backend experience and familiarity with Ethereum or EVM systems.

World Chain Platform Services

The Software Engineer, Crypto Platform role builds services that support World Chain transaction execution, state reads, calldata, smart contracts, and event ingestion. The team also develops Temporal-based indexing and data pipelines for onchain experiences.

Platform work includes maintaining smart contracts and defining abstractions that other product teams can use. The role connects application requirements with the services that read, process, and submit blockchain transactions.

Reliability And Transaction Processing

The engineer improves RPC resilience, failover, redundancy, and transaction simulation. Monitoring and alerting remain part of the work, along with incident response and ongoing maintenance after deployment.

Distributed systems and high-throughput backend experience support the role's operational responsibilities. Event-driven systems, indexing pipelines, and workflow orchestration also appear in the stated experience areas.

Blockchain Skills And Experience
  • Write production code in Go, Rust, and TypeScript.
  • Build transaction execution and state-access services.
  • Develop calldata, smart-contract, and event-ingestion systems.
  • Improve RPC resilience, failover, and redundancy.
  • Support monitoring, alerting, incident response, and maintenance.
Tools For Humanity And World

Tools for Humanity describes itself as the company building technology behind World, including Orb, World ID, and World App. The employer states that World ID has more than 17 million verified people across 160 countries.

The company was founded in 2019 and reports a workforce of more than 400 people. Its disciplines include hardware, software, artificial intelligence, cryptography, mobile engineering, and global operations.

Engineering Questions

What Is The Employment Type?

Tools for Humanity lists the Software Engineer, Crypto Platform as a full-time role.

Where Is The Position Located?

The public posting lists San Francisco. The employer does not specify a work mode on the public job page.

What Salary Is Listed?

The stated salary range is $191,000 to $225,000, plus a competitive long-term incentive package.

Which Technologies Appear In The Qualifications?

The posting names Go, Rust, TypeScript, Ethereum, EVM chains, smart contracts, account abstraction, ERC-4337, event-driven systems, indexing pipelines, and Temporal.

The role works across product, protocol, infrastructure, and security teams, so feature ownership continues from implementation through deployment and operational support. The platform also includes multiprovider redundancy and transaction simulation as part of its infrastructure scope. The benefits package includes healthcare, dental, vision, a 401(k) plan and match, life insurance, flexible time off, commuter benefits, and a professional development stipend. The public posting does not provide an application deadline or a minimum number of years of experience.

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