COMPANY

At 0x, our mission is to eliminate the complexity of accessing tokens and liquidity. We deliver this to web3 builders with a delightfully simple suite of developer APIs that provide faster trading, better prices, and superior user experience.

Founded in 2017, we’ve processed over 60M+ million transactions and $130B+ in trading volume from users trading on Matcha, Coinbase Wallet, Robinhood Wallet, Phantom, Rainbow, DefiLlama, MetaMask, Zerion, Trust Wallet, and many more. Our investors include Greylock Partners, Pantera Capital, and Jump Crypto.

We are looking for a senior software engineer, backend focussed, that has a passion for building DeFi solutions. You have a high degree of integrity, learn and adapt quickly, and seek to make a positive impact on the lives of those who use the systems you build. We hire engineers that have solid fundamentals, are intelligent, have strong learning agility, and are nice people.

The Role

As a member of 0x engineering, you will be laser focused on delivering the best prices at the fastest speeds. The work is similar to that of an MEV searcher: gas optimization, liquidity discovery, low latency, and integrating with the best AMMs such as Uniswap, Curve, Integral, and Ambient.

• emphasis on security

• advanced techniques for correctness

  • static analysis, dynamic analysis, formal methods, fuzzing

• gas optimization

Responsibilities

• Design, implement, and review smart contracts, with code review being a top priority. Participate in the audit process and justify design decisions to stakeholders and the community.

• Create comprehensive documentation for smart contracts. Provide expert assistance to integrators and customers, addressing their technical queries and concerns.

• Expand, maintain, and refine smart contract support infrastructure and continuous integration systems to ensure optimal performance and security.

• Work closely with cross-functional teams, participate in the audit process, and effectively communicate complex technical concepts to both technical and non-technical stakeholders.

Requirements

• Solidity 3+ years, programming 5+ years

• Has lead the design and implementation of systems of moderate complexity with minimum oversight

• Wrote and deployed interesting contracts — more than an ERC-20 token

• Experience with Rust

• Experience building software using modern practices including code reviews, automated testing, continuous integration (CI)

Nice to have:

• Experience or Interest in bridging

BENEFITS

The base salary range for this position is $110,000 - $250,000 + equity + ZRX tokens + benefits. Within the range, individual pay is determined by job-related skills, experience, location, business needs, and candidate preferences between the different compensation elements.

Benefits include:

• Comprehensive insurance (medical/dental/vision/life/disability) — 100% covered for you and dependents for U.S.-based-employees. Benefits are country-specific and may vary.

• 401k, HSA, and FSA for U.S.-based employees

• Monthly stipends for wifi, wellness, and pre-tax transportation expense

• Covered mental health benefits (included professional therapy sessions)

• Flexible hours, liberal work-from-home policy, and a supportive remote environment

• Lunch reimbursement for all employees across the globe!

• Stipend for your ideal remote / WFH set-up: laptop, headphones, and any other work gear you may need

• 12-week paid parental leave

• Great office conveniently located in Downtown San Francisco

• Unlimited vacation: Take time when you need it (and we really mean it)

• Multiple annual in-person team meet-ups around the globe

0x and its associated entities are dedicated to fostering diversity, inclusion, and belonging in its teams and workforce, and are proud to be equal opportunity employers. 0x does not make employment or hiring decisions on the basis of race, color, creed, religion, sex (including those who are pregnant or have given birth), sexual orientation, gender, gender expression or identity, age, disability, medical condition, genetic information, military or veteran status, marital status, pregnancy, citizenship, national origin, immigration or citizenship status, political affiliation, or any other basis that is protected by applicable local, state, or federal laws. This includes not making such decisions based on the status itself, as well as any associations, perceptions, and assumptions made regarding these statuses. 0x will also consider qualified applicants with arrest and conviction records in a way that is consistent with San Francisco’s Fair Chance Ordinance and similar local laws. Our commitment to equal employment opportunity extends to ensuring that all applicants and employees can perform to their fullest potential, including through obtaining reasonable accommodations when necessary.