Blockchain Support Engineer, 0x
APIs for Web3 finance
Be an early applicant
APIs for Web3 finance
201-500 employees
Be an early applicant
201-500 employees
Company mission
To create an infrastructure to support the growing emergence of the crypto economy.
Role
Who you are
- This role is ideal for someone who enjoys bridging customer needs and technical investigation—someone curious, technically strong, AI-savvy, leans into automation, and passionate about DeFi
- Deep technical knowledge of Automated Market Makers (AMMs), decentralized exchanges (DEXes), and operating mechanics of Ethereum Virtual Machine (EVM) and Solana Virtual Machine (SVM) blockchains
- Proficient user of blockchain debugging and simulation tools such as Tenderly, transaction tracing frameworks, simulators, etc
- Competent coder— can reproduce issues through code, automate tasks, 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—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 for all
What the job involves
- Join our Support & Success Engineering team, working at the intersection of customer-facing support and deep technical investigation
- You'll partner closely with API customers, product stakeholders, and core engineering teams to solve complex issues related to pricing, transaction flows, and expected behavior on-chain
- Your main goal: help clients and internal users get the most out of our DeFi infrastructure, ensuring performance, accuracy, and reliability
- You’ll bring clarity to complex issues, build tools to scale support, and play a key role in shaping a more reliable, transparent, and inclusive financial ecosystem
- 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 our 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 Pylon (or other 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 (LGMT)—build dashboards, query logs, and use tracing toolsto help diagnose issues
- Perform data analysis using SQL, Dune, and Metabase
Our take
0x had its beginnings as a decentralized crypto exchange before its founders noticed a problem - while the apps built to facilitate crypto trading were functional, the user experience was usually terrible. 0x changed to become a decentralized exchange protocol instead, and provides a suite of APIs and tools so developers can build decentralized apps capable of competing with the likes of PayPal or Stripe for ease of use and functionality.
0x's product has wide appeal in the Web3 space and has grown a strong customer base including the likes of Coinbase, Robinhood and Polygon, and has a trading volume exceeding $125 billion. Having raised a large amount of capital in a 2022 funding round, it is focusing on expanding its team as well as its product range. While the crypto world is currently subject to intense volatility, 0x is enabling businesses to build apps and products that make the market more navigable. This will go a long way towards improving trust and stability in the sector.
Freddie
Company Specialist at Welcome to the Jungle
Insights
71% employee growth in 12 months
Glassdoor (5)
Company
Funding (2 rounds)
Apr 2022
$70m
SERIES B
Feb 2021
$15m
SERIES A
Total funding: $85m
Company benefits
- Meals: Lunch reimbursements for up to 3 days per week
- Communications expense: We cover wi-fi / cellphone expenses
- Coworking allowance: Coworking of your choice (Non-Bay Area)
- Mental wellbeing: Unlimited therapy sessions with Betterhelp
- Unlimited time-off: Take time away when you need it
- Home-office setup: Set up your dream home office with hardware of your choice
- Wellness benefits: Monthly allowance for gym memberships, massages, etc
- Health beenfits: Fully paid health plan. health allowance for international employees
- Meet IRL: Sponsored events, conferences, and team offsite anywhere in the world
Company HQ
SoMa, San Francisco, CA
Leadership
Will Warren
(Co-Founder & Co-CEO)After finishing a degree in Mechanical Engineering at UC San Diego, they went on to be a Los Almos National Laboratory Researcher. Before co-founding 0x Labs, they were the Technical Advisor at Basic Attention Token, where they advised on Ethereum smart contracts.
Amir Bandeali
(Co-Founder & Co-CEO)After finishing a Finance degree at the University of Illinois, they became a Trader at Chopper Trading and DRW. Initially, they held the position of CTo at 0x Labs, before becoming Co-CEO in 2020.
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