PostgreSQL Expert


Helsinki, Finland

Full time

Software Development

Jan 9

This job is no longer accepting applications.

A hyper growth company built with a strong technological foundation will still have its scalability issues when you go from a million users to 7.5 million in the space of two years. We are now looking for our first ever PostgreSQL Expert to take a gentle hold of our PostgreSQL databases, and understand their inner workings. Our engineers are quite equipped in writing services against our databases, as that is one of the hiring criterias. However we're now looking for someone to really have an in-depth understanding of our PostgreSQL databases and their underlying concepts, making sure we are using them in an optimal way and that they scale with us. 

You'll be monitoring and following the databases to find potential problems, and also work as an evangelist for database optimization and best practices within the organization, towards all of our (almost 20) engineering teams. You'll be working closely with your DevOps colleagues within the Platform team, as well as our Performance Engineer. You'll need to be able to communicate well, and coach your fellow engineers to better DB practices. 

Our humble expectations

We expect you to have extensive expertise in PostgreSQL but also appreciate experience in other SQL or Document databases, for example MongoDB.  

You’ll be successful in this position if you are experienced in areas such as: 

  • Data and schema modeling, partitioning and sharding
  • Scalability and capacity planning
  • Resource usage analysis (I/O, memory, etc)
  • Performance optimization and monitoring
  • Optimizing indexes, queries, parameters and locking
  • HA and backup/restore procedures
  • Automation and tooling for DBs

We hope you’re familiar with database service providers such as AWS or Aiven You'd also have worked in an environment with Python or JVM languages in use. We hope you have worked in an always-on, high growth environment where you've experienced rapid scaling and continuous deployment.

Next steps

The compensation will be a negotiable combination of monthly pay and Wolt stock options. The latter make it exceptionally easy to be excited about our company growing and doing well, as you'll own a piece of the pie. 

If you want to check up on your application or have any further questions about the position you can turn to Product Talent Acquisition Lead, Laura Teerisuo, at at any given time.

About Wolt

Wolt is a Finnish technology company and we're best known for our delivery platform. On our mobile apps or website, customers can order their favorite meals from our restaurant partners – or other items from our grocery and retail partners – to either pick up their order or have it delivered by our courier partners. 

We're currently active in 23 countries and more than 120 cities, servicing over 8 million customers. Our apps (iOS and Android) have the industry's highest reviews, largely because of our customer-centric approach to how we build our products and operations. For example, our customer service team responds in a matter of seconds, in the customer's own language. 

We've raised €267M in financing from renowned U.S. and European based investors, such as ICONIQ Capital, 83North, EQT Ventures, Highland Europe and Goldman Sachs Growth Equity. We've also been fortunate enough to receive some appreciation and recognition for our hard work along the way: Apple selected Wolt's app as their Editors' Choice, Wired named the company one of the "Hottest Startups in Europe," Forbes included our CEO Miki Kuusi on its 30-under-30 in Consumer Tech list, and the Nordic Startup Awards named Wolt Company of the Year. In 2020 we were recognized as Europe's most promising startup as part of Adyen and TNW's #Tech5 competition, and as the fastest growing tech company in Europe by the Financial Times.

Wolt is more than just a food and retail delivery operation – in fact we are built upon a solid foundation of state-of-the-art technology. Our internal tooling enables us to ramp up new cities efficiently and provide excellent customer service, our own logistics platform allows us to optimise our couriers' work to get you the food you want as fast as possible, and our restaurant platform allows restaurants to offer exciting food experiences for our customers in an optimal way.

We work in small teams with high ownership, with each team focusing on a key area of the Wolt product stack. Each and every one of our product team members has a say in where we are going and what solutions we implement. We work with a passion, but we haven't forgotten how to have fun along the way!

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