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 and Solidity Developers with experience on blockchain protocols and EVM networks. As a Back-End Engineer on the DeFi team, you will be working on a wide array of projects, from scaling our non-custodial wallet’s network support to writing smart contracts.  Additionally, you will be responsible for integrating with 3rd party vendors that provide data for crypto tokens, DApps and DAOs, as well as efforts to further centralize logic that currently exists on our wallet clients, into backend services.

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
• Optimize existing systems for scalability, extensibility and performance whilst building out reusable, modular code for use across Blockchain.com's products

WHAT YOU WILL NEED

• The foremost quality for this position or any position at Blockchain.com is integrity
• Solid experience in Typescript, Solidity 
• Experience working with Blockchain technologies (EVM or non-EVM chains, and defi protocols)
• You are highly motivated, self-driven, and passionate about cryptocurrencies
• You know how blockchain systems work, and preferably, you worked closely with at least one
• You find your way around a novel problem you haven't 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 on

COMPENSATION & PERKS

• Competitive full-time salary based on experience and meaningful equity in an industry-leading company
• Awesome office location in the heart of Paris - working 4 days in the office is mandatory 
• Work from Anywhere policy 
• 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

Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business needs at the time.

You may contact our Data Protection Officer by email at dpo@blockchain.com. Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment.

Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf.  Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses. 

Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment.  Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.