Apply Now

Backend Engineer at OpenToken

San Francisco · Full Time

Cryptocurrencies are building the internet of money. We are making the funding of early blockchain projects open and simple. We bring experience from venture capital (Andreessen Horowitz), software engineering (Google,, and crypto ( to reimagine early stage blockchain fundraising.

Apply to OpenToken
This job listing was recently removed.

Job Description

Token sales have funded the next generation of promising cryptocurrency projects: Ethereum, Filecoin, and 0x, to name a few. At OpenToken, we believe that token sales done the right way are a promising way to bootstrap early stage projects and protocols. But the space is notoriously noisy and difficult to navigate. Our goal is to make the process of participating in the most promising token sales simple.

Our team is based in San Francisco and comes from Andreessen Horowitz, Google, and, and our investors include Pantera, Refactor Capital, Bain Capital Ventures, Abstract Ventures, and partners from Founders Fund and Google Ventures, among others. Our current application stack includes React, Django, Postgres, and Solidity.

As engineers, we think smart contracts and distributed ledgers will make financial systems more robust, extensible, and interoperable. With that philosophy, our servers do not move money or control user funds. Instead, we use smart contracts for financial transactions and a traditional software stack for everything else. This is a challenging and novel problem: until moderate throughput cryptocurrencies became popular (ETH, XLM, etc.), it was not possible to expressively move money or financial assets around in a trusted and publicly verifiable way. At OpenToken, you will build this system with us, using both well established tools and new technology.

-Create a secure, fault tolerant backend that reliably tracks and sends cryptocurrency transactions
-Write smart contracts that handle traditional financial processing in a robust transaction-oriented environment like Ethereum
-Use industry-standard tools like Postgres, Django, Celery, EC2, and S3
-Automate everything. Make our manual processes easier or remove them entirely with data scrapers, anomaly detection, fast alerts, speculative job execution
-Test and pipeline deployments for five nines uptime and 99.5% < 200ms SLA
-Coordinate external penetration tests and bug bounty programs

-Interest in cryptocurrencies and robust systems
-Experience with systems engineering (multiple distinct interacting components)

Nice to have
-Experience building crash-only distributed systems
-Experience with Solidity and smart contract development
-Financial engineering experience
-Signal processing

Apply Now

Other Jobs at OpenToken

  • Software Engineering Jobs
    Frontend Engineer
    San Francisco · Full Time · $130K – $180K · 0.5% – 1.5%
    Backend Engineer
    San Francisco, San Francisco Bay Area · Full Time · $130K – $180K · 0.5% – 1.5%

OpenToken Team

Daniel Chen
Founder/CEO @OpenToken. First engineer @Andreessen Horowitz. @California Institute of Technology Computer Science and Business/Economics
Michael Graczyk
Stanford MS in progress. UT EE and Mathematics degrees, loves to build new things. I would rather work on an unsolvable problem then an uninteresting solution.

OpenToken Investors

Cantos Ventures
Investing in the anthropocene. We back transformative technology in core industries from inception through Seed.