Database Reliability Engineer

Berlin, Germany

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Posted 1 month ago

Klarna makes shopping smoooth. And we do it with flair because shopping is fun. Every day, we help customers, businesses, and partners explore just how smoooth the modern shopping experience can be. 
It means we’re constantly changing the game. Always trying out new things. And we encourage our people to do the same. To grow. To develop. Because we don’t believe roles have to stay fixed. Instead we inspire our people to take an irregular career path. As a company of 350 dynamic start-ups, our whole business is built for it. So once you’re in, there’s no telling what will happen next.
Engineering at Klarna is an inspired, customer focused community, dedicated to crafting solutions that redefine our industry. Working in small, highly collaborative agile teams, you and your team will have a clear mission and ownership of an important outcome that supports Klarna and our customers. At Klarna we optimise for quality, flow, fast feedback, focussing on end-to-end ownership, continuous improvement, testing, monitoring and experimentation. We aim for teams that are inclusive, helpful, and have a strong sense of ownership for the things they build.
Our engineers make some of the most significant decisions for the company and we are looking for bold, open and curious developers. As a Klarnaut, you’ll be inspired to contribute to the growth of Europe’s most highly valued fintech and your work will reach millions of users.
Want to be part of the change? We're expanding our multi-national database team in Berlin, with database reliability engineers.
Who we are...
Most of us have a database administration background with a longtime experience of managing relational databases. We believe that the role of the database administrator needs to  change. We believe that instead of running databases for others we can contribute much more to our company’s ambitious goals by enabling Klarna’s product teams to run their own databases in the most efficient, secure and compliant way. We simply provide the tools they need to do just that. This way we engineer the reliability of their databases.
What you will get to do...
Klarna’s data is to a very large degree stored in hundreds of RDS instances and clusters on AWS. These databases have to meet the high requirements of a company from the online payment and banking sector with respect to performance, availability, security and compliance. Many hours have been and will be invested by our product and development teams into the setup and maintenance of these databases. Hours, the teams cannot invest into the development of the core features of the products and services they are responsible for - You are going to help change that for them.
You will... - Implement tools that automate all processes to set up, monitor and maintain RDS databases on AWS. Tools, the teams can integrate into their own deployment pipelines to manage their own databases. This way setting up a database becomes an easy and reproducible task, their setup will be according to best practices and fully compliant.
- Help the teams make the right choices of database technology for their specific use cases. As well as help them design their database schemas and queries before the launch of their application.
- Teach them useful concepts and best practices to enable them to implement more efficient and resilient applications.
- Implement tools teams can use to quickly set up the monitoring of their databases, to help them identify issues with their queries, using AWS CloudWatch, Lambda functions, RDS logs, DataDog, Splunk dashboards, whatever is available and suitable. You will help them to solve these issues and to optimize their schemas and queries after the application launch.

What we think you have...

  • Professional experience with relational database administration (optimization, tuning, configuration, monitoring), preferably PostgreSQL
  • Professional experience with AWS in general and AWS database technologies (i.e.  RDS, Aurora) in particular, or other cloud services.
  • Strong analytical skills and the ability to understand complex systems
  • Good knowledge of SQL query performance optimization
  • The will to automate everything automatable
  • A healthy appetite to learn new things & a team spirit

You might also have...

  • University degree in Computer Science, or similar technical field, or equivalent practical experience
  • Good knowledge of Python is a plus
  • Some experience using git (i.e. in form of Bitbucket)
  • Some experience with CloudFormation or something similar will definitely be of help
  • Some knowledge of Jenkins
  • Good knowledge of database scaling techniques for high-performance databases, like proxies, caches, master-slave setups etc.
  • Good knowledge of disaster recovery methods and configuring databases for high availability

What we can offer you

  • Culture - You'll have an opportunity to work with people from 90+ different countries in our English speaking offices in Stockholm/Berlin city centre.
  • Learning - We have a learning and development focused environment with an emphasis on knowledge sharing, training, and regular internal technical talks.
  • Compensation - You’ll receive an attractive salary, pension, and insurance plans, plus we offer all of our employees an opportunity to invest in a RSU program and own a stake of the company.
  • Relocation - We can offer relocation support to Berlin. 
About Klarna
Klarna was founded in Stockholm, Sweden in 2005. Since then, we’ve changed the banking industry forever. And now we’re creating the world’s smooothest shopping experience. We serve 80 million consumers worldwide, and partner with 190,000 merchants – with a new merchant joining us every 8 minutes. Including some of the world’s leading brands, such as H&M, ASOS, IKEA, Adidas, Samsung and Lufthansa. Our offices are spread over 17 different markets, hosted by +2,500 people from 90 nationalities.
Job tags: AWS CloudFormation Git High availability High-performance Lambda PostgreSQL Python SQL