0x is looking for a Blockchain Support Engineer to join our Support & Success Engineering team. You will work at the intersection of customer-facing support and deep technical investigation, partnering with API customers and internal teams to solve complex issues related to pricing, transaction flows, and on-chain behavior. Your work will be critical to ensuring the performance, accuracy, and reliability of our DeFi infrastructure.
What You'll Do
- Act as a technical liaison for API integrators and internal stakeholders, diagnosing user-reported issues like pricing anomalies, swap error messages, and unexpected API behavior.
- Investigate EVM and SVM blockchain transactions using tools like Tenderly and tracing tools, replaying flows and identifying root causes.
- Develop scripts, tools, or small utilities (in Python or another language) to reproduce issues, automate diagnostics, integrate solutions into the support process, and speed up troubleshooting.
- Leverage AI tools (e.g., ChatGPT, Claude, Cursor, various LLMs) to analyze failing transactions, interpret revert messages, generate explanations or remediation steps, and build tools.
- Track, prioritize, and follow-up in customer support tools, Slack, and Telegram, with a customer-first approach, ensuring timely updates and resolution alignment.
- Collaborate with engineering teams, reviewing code and logs to limit the scope of investigation currently required of product engineers.
- Work with Grafana, build dashboards, query logs, and use tracing tools to help diagnose issues.
- Perform data analysis using SQL, Dune, and Metabase.
What We're Looking For
- Deep technical knowledge of Automated Market Makers (AMMs), decentralized exchanges (DEXes), and the operating mechanics of EVM and SVM blockchains.
- Proficient user of blockchain debugging and simulation tools such as Tenderly, transaction tracing frameworks, and simulators.
- Competent coder, able to reproduce issues through code, automate tasks, and build custom tools.
- AI fluency, capable of using large language models and AI agents (Claude, Cursor, etc.) to assist in diagnosing transaction reverts and explanatory diagnostics.
- Strong debugging mindset, able to explore, read, comprehend codeflows, logs, reverts, and collaborate efficiently with engineering teams.
- Customer-centric approach with high responsiveness, smart ticket prioritization, and a drive to ensure customer satisfaction.
- Curious and growth-oriented, keen to expand into software engineering over time.
- Analytical thinker, proficient with SQL or other query languages; experience with Dune, Metabase, or equivalent analytics platforms.
- Observability savvy, familiar with stacks like Grafana, able to build dashboards, sift logs, and use tracing tools to monitor and troubleshoot systems.
- Mission-aligned, passionate about DeFi's potential to create fairer and more accessible financial systems.
Technical Stack
- Languages/Tools: Python, SQL
- Observability/Analytics: Grafana, Tenderly, Dune, Metabase
- Blockchains: EVM, SVM
- AI Tools: LLMs (ChatGPT, Claude, Cursor)
Team & Environment
You will join the Support & Success Engineering team. Our team consists of veteran crypto builders who know the importance of code quality, team cohesion, and a culture of learning.
Benefits & Compensation
- 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.
- Multiple annual in-person team meet-ups around the globe.
Work Mode
This is a global role with a supportive remote environment.
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.
