Klarna

Senior Offensive Security Engineer

Berlin, Germany
Java Node.js AWS Python
Description
We are on a mission to liberate humanity from all the meaningless time spent managing their purchases and finances, so they can do more of what they love. Klarna was founded on a bold belief: that people are capable of achieving the extraordinary, even when faced with the seemingly impossible. Our journey has been one of continuous learning, facing immense challenges head-on, dedicating countless hours of hard work, and never wavering in our commitment or resilience - and now we are looking for individuals to join us on our journey and contribute to our mission.

On our path to becoming the world’s favorite way to shop, we’re assembling an unparalleled global talent network, accelerating individual careers, and disrupting entire industries. We are on a mission to liberate humanity from all the meaningless time spent managing their purchases and finances, so they can do more of what they love. We’re in search of global talent eager to embrace our atmosphere and defy their own expectations.

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, fast feedback, 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.

As a Senior Offensive Security Engineer at Klarna, you will be at the forefront of safeguarding our digital infrastructure and customer data. This role demands a blend of hacking skills, creativity, and a deep understanding of cyber threats. You will simulate sophisticated cyber attacks to identify vulnerabilities, ensuring Klarna's resilience against real-world threats. Collaborating with cross-functional teams, you will provide actionable insights to fortify our security posture.

What you'll get to do

  • Break all the things
  • Conduct white-box and black-box penetration testing against internal and public-facing applications and assets
  • Manage, triage, and investigate Bug Bounty submissions and external pentest findings
  • Perform variant analysis on issues discovered through all channels
  • Research and perform security analyses on Klarna’s 3rd-party solutions
  • Develop tooling to support reconnaissance, automation, and metrics collection
  • Provide expert guidance to developers, other product security teams, and the SOC in investigating issues
  • Spread awareness of offensive security practices via demos, workshops, and training
  • Assess the security of our tech stack through whatever means are best suited
  • Define what we focus on to provide the most value
  • Help further mature Klarna’s security program

To succeed in this role, we think you should have/be:

  • Strong experience with penetration testing and other technical security assessments
  • Experience identifying security issues in code, particularly within Java and Node.js
  • Experience with cloud environments, particularly AWS and modern micro-service design principles
  • Comfortable communicating findings clearly and effectively, with concrete remediation recommendations beyond simple issue reporting
  • Comfortable scripting and contributing to larger projects in Python
  • Able to take the initiative and be comfortable taking on projects that contribute to the larger security culture and posture at Klarna
  • Industry recognized certifications, e.g., OSCP, OSWE, CREST, GIAC, AWS, et. al
  • CTF Participation and active contributions to the cybersecurity community

What we offer

  • A role where you can make an impact from day one, with the opportunity to see the immediate effects of your work.
  • Collaboration within a diverse team that values innovation and creativity.
  • Culture - You'll have an opportunity to work with people from 90+ different countries in our English-speaking offices in Stockholm/Berlin city center
  • A challenging scope with the opportunity to work with latest technologies

We also believe in contributing back to the open-source community. You can find some of our work herehttps://github.com/klarna.

How to apply: Send your CV in English and we'll be in touch!

About Klarna

Since 2005 Klarna has been on a mission to revolutionize the retail banking industry. With over 150 million global active users and 2 million transactions per day, Klarna is meeting the changing demands of consumers by saving them time and money while helping them be informed and in control. Over 450,000 global retail partners, including H&M, Saks, Sephora, Macys, IKEA, Expedia Group, and Nike have integrated Klarna's innovative technology to deliver a seamless shopping experience online and in-store. For more information, visit Klarna.com

It is our commitment that every qualified person will be evaluated according to skills regardless of age, gender, identity, ethnicity, sexual orientation, disability status or religion. Please refrain from including your picture and age with the application.

About Engineering at Klarna

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, focusing 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. 

Check out what it's like to be an engineer at Klarna here.
Klarna
Klarna
E-Commerce FinTech Payments Shopping

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