Common Questions

  • What does Blockchain do?
  • What technologies does Blockchain jam to?
  • What do you look for in prospective hires?
  • What should I expect in the hiring process?
  • Why do people join the ranks at Blockchain?
  • What if I can’t fully wrap my brain around cryptocurrencies like bitcoin and ether?
  • What does Blockchain do?

    Led by engineers and product people, Blockchain is focused on designing, building, testing, and shipping great products that delight our users. We have three core products:

    • Block Explorer - Our first and original app is still the world’s most popular bitcoin website of all time, and now serves the ether ecosystem, too. allows anyone in the world a quick and reliable way to check the status of any transaction. The site data is regularly used by Reuters, Bloomberg, and many others to report on the status of the digital currency ecosystem. Think Bloomberg meets Google for Digital Currency.
    • Wallets - We offer the world’s most widely used wallet for digital currencies. We build iOS, Android and web wallets for millions of bitcoin enthusiasts. Our wallets make it simple and easy for anyone in the world to securely send, receive, and manage their bitcoins and ether. Our wallet is a software wallet that provides infrastructure to empower our users to be their own bank. We don’t hold users funds, or have access to them.
    • Developer Platform - Blockchain provides the most built upon API in the ecosystem. Thousands of developers have used our APIs to build a huge array of products and decentralized applications.

    But it doesn’t stop there. Our R&D efforts are responsible for pioneering advancements in block chain technology. Most recently, the team unveiled the first prototype of a revolutionary payment channel, called Thunder. The technology enables users and vendors to send and receive digital assets without touching the main block chain. Even in the prototype phase, Thunder has the potential to facilitate secure, trustless and nearly instant payments, unleash the power of microtransactions and allow the block chain networks to handle heavy loads, and increase user privacy.

  • What technologies does Blockchain jam to?

    We use java on our backend but also use some clojure and node for smaller backend systems. Our frontend is AngularJS and our database is MySQL. The Blockchain wallet is available on iOS, Android and Web. If you’re interested, here are the current frameworks we use:

    • iOS: storyboards, JSBridgeWebView
    • Android: gradle, bitcoinJ, apache commons, Junit
    • Web: AngularJS, NPM, NodeJS, Travis, ES6, Jasmine (for tests), BitcoinJS, Bootstrap
  • What do you look for in prospective hires?

    We’ve hired people from 18 different countries, people already raising children, recent high school grads, PhDs, drop outs, anarchists, liberals, and people from nearly every socioeconomic background. What do they all have in common?

    • We hire people that embody our core values. To be a part of this team, you need to be passionate about challenging convention, empowering our end-users, sanctifying security, delighting in the details and doing it all while staying human, humble and honest.
    • We hire people who are better than at least 50% of the team. Great hires who cross that threshold are hard to come by and patience isn’t easy, but the right person slow is better than the wrong person fast.
    • Skills can be taught so intellectual strength and curiosity are far more valuable to us.
    • The struggle is real in a start-up. Determination, passion and grit are the antidote. We hire people who believe in what we’re doing and are excited to push the rocket when the going gets tough.
    • We never stop shipping. To make it at Blockchain, employees need to have a bias for action.

    For more on our approach to hiring, read our CEOs take here.

  • What should I expect in the hiring process?

    First, you’ll have an introductory conversation with a member of our Talent team. If all goes well, we’ll schedule a call between you and the Hiring Manager.

    The Hiring Manager conversation is a two-way exploration. They can share more about the role and answer any questions you may have. Simultaneously, they’ll be assessing whether you’re a good fit for the role and company. If both parties agree that this feels like a good fit, you’ll be invited in for a face to face interview.

    F2F interviews are conducted with 3-5 people and are generally structured as follows:

    • First, you’ll meet with the hiring manager who will work through a challenge (note: this challenge varies from role to role and may be done in advance of this interview - prime example: we’re far bigger fans of code samples than whiteboarding code – and, in that case, we’ll use this time to discuss your work together) and answer any questions you may have.
    • 3-4 additional interviewers will meet with you to give you a broader sense of our team and get a sense for you and how you can help us build an open, accessible and fair financial future.

    You’ll hear back from us within a week. If all goes well, we’ll ask you for references and you’ll be invited to meet with our CEO. Within 3 days, we’ll let you know if we’re moving to an offer stage. If so, we’ll begin contacting your references and getting the offer together. Once all references have been checked, we’ll send an offer letter your way and cross our fingers.

  • Why do people join the ranks at Blockchain?

    • Make a Meaningful Impact: Joining our team means you meaningfully change the lives of over a third of the world’s population who, at the moment, don’t have the luxury of a stable financial market, currency or access to financial services. And engineers can take it one step further by not only pushing the gauge on Blockchain products but also working on open source projects that are benefiting the bitcoin ecosystem and community as a whole.
    • Pioneer New Technology: Blockchain technology is revolutionizing the way value is exchanged. Our team is at the forefront of that change and, as a member of our team, you’ll have the opportunity to break new ground on a novel set of problems. There is no rule book or precedent, only the opportunity to create. For engineers, in particular, that means an opportunity to work on the new internet and pioneering change globally.
    • Work on your Terms: There’s no denying that we work hard but we’re more focused on what you do than how you do it. So we’ve ditched the standard 9-5 in favor of supporting individual work schedules that maximize each employee’s potential and effectiveness.
    • Work with the Best: You will not be the smartest person in the room.  We’re not just talking book smart (we have our share of PhDs and college dropouts), but people that demonstrate their care for their craft.
    • Dissolving Boundaries Exist: We have a lot to do but the work you’ll be doing will be driven as much by your role and responsibilities as it is by your interests. Far from being limited by your role, at Blockchain you’ll be encouraged to pursue work in areas that are of interest and to evolve your skills set across a variety of projects.
  • What if I can’t fully wrap my brain around bitcoin and cryptocurrencies?

    Click here to visit our support center where you can find lots of useful information to get you up to speed.