< Back to results

Senior Back-End Engineer (Kotlin), Wallet Authentication


Blockchain.com Jobs / Europe - Remote / Engineering & Modelling
Job Overview

Blockchain.com is the world's leading software platform for digital assets. Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time.

We are looking for Kotlin developers (with some Java experience) who will help us consolidate and improve account management experiences. At Blockchain.com we have a unique security model that allows our users to store their cryptographic keys on our servers in a trustless manner (i.e. we don’t have any way to gain access to these keys). You will be working with cutting edge technologies and a unique security model on a variety of projects.

These include projects such as:

  • Continue our work on account consolidation (SSO) to unify user accounts across our Exchange and Wallet products.
  • Investigate and specify shared key ownership using new cryptographic techniques such as multi-party computation (MPC) to further secure our non-custodial “hot wallet” services.
  • Maintaining Login/Authentication functionality
  • Improving our account recovery mechanismsMaintaining

As a Senior Back-End Engineer you should lead by example - driving the technical discussions, influencing the approach and making a positive impact on the team's development by advocating the best engineering practices.

WHAT YOU WILL DO

  • Build solid, reliable software to handle multiple networks and support our ever growing family of products and user base,
  • Be a part of a dedicated engineering team committed to applying the highest standards and shipping secure and performant systems,
  • Work in the core of Blockchain.com’s solution, interacting directly with multiple blockchains,
  • Work extensively with open source technologies (Docker, Kafka, MySQL),
  • Ensure security is at the forefront of everything you do,
  • Work within interdisciplinary teams to continually deliver the highest quality products to our users,
  • Optimise existing systems for scalability, extensibility and performance whilst building out reusable, modular code for use across Blockchain’s products.

WHAT YOU WILL NEED

  • The foremost quality for this position or any position at Blockchain.com is integrity,
  • Experience with at least Kotlin or NodeJS and willing to learn these languages,
  • Experience working with Blockchain technologies (Eth and Bitcoin)
  • You are highly motivated, self-driven, passionate about crypto currencies,
  • You know how blockchain systems work, preferably, you worked closely with at least one,
  • You find your way around when confronted to a novel problem not many people faced before,
  • You possess an innate curiosity, you know multiple programming languages, you are a strong advocate for the best engineering practices and thrive on learning new technologies,
  • You take a pragmatic approach to developing clean solutions to complex problems,
  • You pride yourself on consistent high levels of test coverage, strong technical documentation and effective monitoring,
  • You take full responsibility for all the projects you work in,

COMPENSATION & PERKS

  • Competitive full-time salary based on experience and meaningful equity in an industry-leading company
  • The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an exciting, emerging industry.
  • Unlimited vacation policy; work hard and take time when you need it.
  • Performance-based bonuses paid in cash
  • Apple equipment provided by the company
  • Awesome office locations and remote working options.

More Jobs at Blockchain.com


Blockchain.com Overview

Blockchain.com is connecting the world to the future of finance. We are the most trusted and fastest growing crypto company, helping millions across the globe – from single individuals to the largest institutions – have an easy and safe way to buy, sell and store cryptocurrency. Known as the world's most popular crypto wallet, Blockchain.com is on a path to revolutionizing the $14T financial services industry. Blockchain.com is backed by leading investors including Lightspeed Venture Partners and Google Ventures.

Website Twitter LinkedIn Job Archive


Visit Blockchain.com Careers Page (opens new tab)
Blockchain.com Jobs by Location

Check below to see all of the open Blockchain.com jobs organised by office location.

Europe - Remote (7)

Lithuania (2)

London (3)

Singapore (1)

UK - Remote (2)

US - Remote (6)

Vilnius (3)

Worldwide - Remote (8)

Blockchain.com Jobs by Team

Check below to see all of the open Blockchain.com jobs organised by team.

Administration & Events (1)

Client Services & Strategy (2)

Compliance (8)

Engineering & Modelling (17)

Finance & Accounting (3)

Legal Services (1)

Latest Tweets from Blockchain.com

We are committed to the safety of our customers. That’s why we conduct regular audits to protect the data we hold for millions of customers in more than 200 countries around the world. https://t.co/MsWGFzvW5I

2nd Dec 22 @ 22:29 14 2 25


We’re bringing crypto to The Nutmeg State. Connecticut residents can now buy, sell, swap, and trade crypto with the https://t.co/0DZyULavbV Wallet and Exchange. Start your crypto journey today https://t.co/GLyNT5FPPI https://t.co/DemO78QGAw

2nd Dec 22 @ 20:44 8 7 20


It's that time of the year again...✨ #SpotifyWrapped What's been your favorite https://t.co/0DZyULavbV Podcast episode?👇 https://t.co/yYqsd5aBtD https://t.co/GUjxZhbzW1

1st Dec 22 @ 19:44 33 11 34


The https://t.co/0DZyULavbV Wallet is the world’s first and only hybrid crypto wallet, giving you the best of custody and self-custody in a single app. Today we’re introducing improvements that make it easier to navigate between these two worlds. https://t.co/2Wqy70Hm4U https://t.co/C5aqoVntId

30th Nov 22 @ 21:45 16 10 41


Excited about Ethereum? Purchase ETH today on https://t.co/0DZyULb31t using the https://t.co/0DZyULb31t Wallet. https://t.co/0DZyULb31t 🖱

30th Nov 22 @ 10:30 10 4 15


Beyond offering a new revenue stream for creators and laying the technical foundations for start-up developers, Ethereums’ role in creating a version of the internet that gives ownership back to the user is pivotal.

30th Nov 22 @ 10:30 6 10 26


In 2021, Berners-Lee sold the original source code for the WWW as an NFT on the Ethereum blockchain, and the symbolic baton was passed.

30th Nov 22 @ 10:30 4 8 15


What’s the future of Ethereum? 🌍 In 1989, British scientist Tim Berners-Lee created the open-source and free-to-use World Wide Web (WWW), making it possible for the internet to evolve as fast as it has. Buterin upheld this spirit in writing the Ethereum whitepaper.

30th Nov 22 @ 10:30 3 4 4


Smart contracts are like digital “if-then” statements which can be synced with external databases — if a condition of the contract is met then the agreement is approved. 🤝

30th Nov 22 @ 10:30 3 4 4


How can you build on Ethereum? Every node (computer participating on the Ethereum network) holds a copy of the Ethereum Virtual Machine (EVM). This is like a decentralized “computer” that has the ability to execute millions of projects through the use of “#SmartContracts”.

30th Nov 22 @ 10:30 2 3 3