0x - Senior Backend Engineer API
Requirements
• We care far more that someone has solid fundamentals, strong learning agility, and is an overall good human. That said, we’re excited about the rapidly evolving tech we’re building on. It includes: • TypeScript + Node/Express (core stack) • AWS Cloud Services (Kubernetes, Kafka, Postgres, Redis, OpenSearch, etc) • Grafana LGTM Observability Stack • 7+ years of experience solving complex distributed computing problems. • Fluent in TypeScript/JavaScript - you can confidently write and debug APIs in Node/Express without relying on type-casting hacks or constant lookup. • Experienced with designing and building systems that include: • Relational or Key-Value datastores • Distributed, event-driven architectures (Kafka, queues, streams) • Cloud-based deployment (preferably AWS) • External-facing REST/HTTP APIs • Monitoring dashboards (preferably Grafana) • Strong problem-solving and debugging skills - you can isolate issues, reason through errors, and explain your approach clearly. • Up to date on emerging trends in modern backend technology solutions (databases, queues, caching, etc.). • Passionate about DeFi and how it can improve people’s lives. You’ve used DeFi apps yourself and care about building better ones. • Two annual in-person team meet-ups around the globe • Preferred • Preferred • Experience working with search engines (ElasticSearch, OpenSearch). • Solid understanding of blockchains (especially EVM chains). You know fundamentals like chain IDs (e.g., Ethereum mainnet = 1, Polygon = 137) and how replay protection works. • Experience working with JSON-RPC APIs to interact with blockchain nodes for tasks like querying data, sending transactions, or monitoring events. • Experience with Web3 libraries (e.g., ethers.js, viem, Web3.js) to build/test blockchain integrations.
Responsibilities
• Be an individual contributor on projects as well as lead technical projects of moderate to high complexity • Offer valuable insights as a peer when reviewing designs and performing code reviews • Create high quality, secure, clean code • Improve the way we build and deliver software • Consistently ship • Coach and mentor other engineers and generally up-level the team • Empathize with our customers and users
Benefits
• The base salary range for this position is $95,000 - $230,000 + 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. • Comprehensive insurance (medical/dental/vision/life/disability) for U.S.-based employees — 100% of base plan covered for you and dependents • 401k and FSA for U.S.-based employees • Monthly mobile phone bill, wellness, and pre-tax transportation expense • Covered mental health benefits (included professional therapy sessions) • A supportive remote environment • Lunch reimbursement for all employees across the globe! • Stipend for your ideal remote / WFH set-up: headphones, and any other work gear you may need • 12-week paid parental leave • Great office conveniently located in the SF Financial District for those in the region! • Flexible vacation: Take time when you need it (and we really mean it!)
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