Senior Software Engineer, API Products

Job not on LinkedIn

🔥 2 minutes ago

🇺🇸 United States – Remote

💵 $150k - $230k / year

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 8%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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0x Labs

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2016

🔌 API

🌐 Web 3

💳 Fintech

API • Web 3 • Fintech

0x Labs is a company specializing in providing a suite of APIs that simplify DeFi (Decentralized Finance) trading and token swaps for developers and businesses in the Web3 ecosystem. Their products include Swap API, Gasless API, and Trade Analytics API, allowing users to embed swaps, conduct gasless swaps, and unlock trade insights. 0x Labs supports integrations across multiple blockchain networks, offering aggregated liquidity from over 130 exchanges. Their solutions enable seamless integration of crypto trading functions into applications with only a few lines of code, supporting millions of tokens, and providing powerful analytics and management tools.

📋 Description

• Lead projects from initial idea to production for new products and existing APIs • Build new APIs and trading products, including problem research, architecture design, and first-version delivery • Maintain and extend existing APIs with support for new chains, bridges, and customer-requested features • Keep APIs fast and reliable as traffic grows • Participate in the on-call rotation • Investigate failed trades and stuck transfers using logs, traces, and onchain data • Resolve root causes of trading and transfer issues • Work with product, legal, and GTM teams to translate business and compliance needs into technical decisions • Write design documents • Review teammates’ designs and pull requests

🎯 Requirements

• 6+ years of backend engineering experience, including at least 2 years in DeFi • Experience at a trading app, wallet, DEX aggregator, onchain data company, or similar • Senior or Lead Engineer with a track record of owning complex projects end to end • Built and maintained developer-facing APIs • Deep onchain knowledge, especially EVM, including calldata, contract interfaces, gas, and approvals • Strong system design experience for production-scale backend services • AI power user who applies AI to multiply engineering impact without replacing judgment • Clear communicator able to explain technical tradeoffs to non-engineers • Alignment with company core values • Ability to attend annual in-person team offsites around the globe • Experience with cross-chain/bridging or DEX aggregation is nice to have • Experience with ecosystems outside EVM, such as Solana, is nice to have • Experience with TypeScript and/or Rust is nice to have

🏖️ Benefits

• Equity • ZRX tokens • Comprehensive medical, dental, vision, life, and disability insurance for U.S.-based employees • 401k and FSA for U.S.-based employees • Monthly mobile phone bill, wellness, and pre-tax transportation expense • Covered mental health benefits, including professional therapy sessions • Supportive remote environment • Lunch reimbursement for all employees across the globe • Stipend for ideal remote/WFH setup, including headphones and other work gear • 12-week paid parental leave • Flexible vacation • Access to a San Francisco office for those in the region