Full-Time
Senior Software Engineer
JavaScript
Posted on 9/4/2025
Klarna
1,001-5,000 employees
BNPL online payments platform for merchants
No salary listed
Milan, Metropolitan City of Milan, Italy
In Person
 Software Engineering (1) |
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- Proficient in JavaScript, with strong coding abilities.
- Experience with advanced JavaScript libraries and frameworks such as React, React Native, and Redux.
- Familiarity with TypeScript, Node.js, and Express.js.
- Experience in API development and product development.
- Passionate about writing clean, testable code.
- Experienced with Agile practices (Pair Programming, Test-Driven Development, Behavior-Driven Development, Continuous Integration, Continuous Delivery).
- Strong verbal and written communication skills in English.
- A proactive team player with strong problem-solving skills and the ability to adapt to changing priorities and deadlines.
- Own services end-to-end: decide how best to build, test, deploy, and monitor.
- Work with large-scale, highly available, and resilient modern financial systems.
- Be an integral part of a team, contributing to its culture and ways of working, including agile methodologies, pair programming, and mob programming.
- Implement automated deployment processes to enable multiple code releases per day.
- Collaborate and grow in a dynamic and autonomous environment, learning from successes and failures to drive continuous improvement.
- Take ownership of system design, work in cohesion with domain architects, manage end-to-end problem-solving, stakeholder communication, and mentor junior engineers.
- Drive knowledge sharing through demos, presentations, and tutorials.
- Experience with Java.
- Familiarity with AWS, Splunk, Ansible, Terraform, Jenkins, Docker, Kubernetes, and Kafka.
- Experience working in a fast-paced, international environment.
Klarna provides online payment solutions that let shoppers buy now and pay later for purchases made in e-commerce. Its service enables customers to complete purchases immediately and defer payment to a later date, often with no interest if paid within a set period. It earns money by charging merchants a transaction fee and by offering extended payment plans that may include interest or fees. Klarna operates in markets across Europe, North America, and the Asia Pacific region, serving both individual consumers and online merchants. Its goal is to facilitate smoother transactions between shoppers and merchants by offering flexible payment options that can boost merchant sales and improve the shopping experience, while maintaining transparency about system status and reliability.
Company Size
1,001-5,000
Company Stage
IPO
Headquarters
Stockholms kommun, Sweden
Founded
2005
Simplify's Take
What believers are saying
- Klarna doubled Elliott facility to $2bn, enabling $17bn US financing after Q4 2025 GMV surge.
- Klarna partnered with Avvio, integrating BNPL into hotel bookings across Europe and North America.
- Klarna extended PAIR Finance deal to Romania, boosting recovery rates 10-15% via AI collections.
What critics are saying
- Stripe integrations erode Klarna's direct merchant ties, slashing fees within 6-12 months.
- High delinquencies force PAIR Finance reliance in CEE, spiking Klarna credit losses in 12-18 months.
- Elliott withdraws $2bn funding amid US defaults, collapsing expansion in 18-24 months.
What makes Klarna unique
- Klarna serves 114 million consumers across 45+ countries, surpassing Afterpay's 20 million.
- Klarna offers Pay in 4, Pay in 30, and 6-36 month financing, unlike Affirm's no Pay-in-4.
- Klarna provides in-app shopping and merchant tools like A/B testing, exceeding competitors.
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Benefits
Company Equity
Growth & Insights and Company News
6 month growth
↑ 0%1 year growth
↑ 0%2 year growth
↓ -1%Klarna's attempt to replace 700 customer service agents with AI backfired spectacularly, forcing the Swedish fintech company to reverse course and adopt a hybrid approach. When the AI assistant went live in late 2024, customer satisfaction plummeted as quality scores tanked. Recent data from Prosper Insights & Analytics shows 63% of Gen-Zers hadn't heard of agentic AI, whilst over 36% of surveyed consumers don't believe it's a good idea. Klarna CEO Sebastian Siemiatkowski admitted cost considerations led to lower quality service. The company now combines AI for simpler tasks with human agents for complex issues, with Siemiatkowski emphasising customers should always have the option to speak to humans. The experience reflects broader industry challenges, with PwC reporting 56% of CEOs see neither revenue nor cost benefits from AI investments.
PayPal Links on Canva and other digital transactions news briefs from 4/9/26. * PayPal Holdings Inc. said its Payment Links are now available for Canva, a platform that enables users to sell videos, social posts, and presentations. Payment Links, which PayPal launched in September, allow users to receive money via text, email, or social media. * Adyen NV introduced Intelligent Money Movement, which it says is aimed at global businesses looking for faster funds movement, simplified operations, and a real-time view of cash positions. * Merchant processor Paysafe Ltd. has added stablecoin-funding capability for digital wallets in a new service called Pay with Crypto. The service, which embeds the capability directly in Paysafe's platform for online gaming and similar applications, comes through a partnership with digital-asset platform MoonPay. * Visa Inc. introduced Intelligent Commerce Connect, a service aimed at easing the way for businesses that want to sell via AI-enabled commerce. * Deluxe Corp. has agreed to process payments for merchant clients of Washington Trust Bank, based in Spokane, Wash., and manager of more than $10 billion in assets. * Persistent Systems has launched Merchant Risk Management and Fraud Detection technology intended to help financial institutions more accurately detect fraud and cut fraud losses. * Buy now, pay later specialist Klarna AB said it is expanding a relationship with the Douglas Group, a Europe-based beauty retailer, to Italy and Spain. Klarna has been processing for Douglas shops in other markets in Europe. * Nacha, the regulatory body for the automated clearing house network, named Walrus Security as a Nacha Preferred Partner for Account Validation, Fraud Monitoring, and Risk and Fraud Prevention.
Vivid Creative Studio LLC partnered with klarna and apple pay to create an international, multi-platform campaign.
Klarna, the global digital bank and flexible payments provider, today doubled its existing forward-flow and whole-loan sale agreement with investment funds managed by Elliott Investment Management. The facility size doubles to $2bn and the term extends by one year to three years, enabling Klarna to facilitate up to $17bn-worth of US Financing loans during the remaining life of the program. "Klarna's US Financing is growing fast because it gives Americans something the credit card industry never has: real choice, clear terms, and no surprises. This partnership sets the foundation for us to meet the accelerating demands of our American consumers." — Niclas Neglen, Chief Financial Officer, Klarna The upsizing reflects the strong performance of the program since the two companies first announced their partnership in November 2025. In Q4 2025, Klarna's US Financing GMV grew significantly, and the expanded facility gives Klarna further capacity to support the accelerated demand. Under the
Klarna has raised $1.7 billion through a significant risk transfer transaction with a consortium led by Värde Partners, its largest such deal, designed to support up to $40 billion in lending capacity. Combined with a $2 billion facility announced in March with Elliott Investment Management, the deals provide substantial capital relief for the Swedish buy-now-pay-later company. The moves come as Klarna's shares have fallen 76% from their September IPO price of $40 to roughly $12. Despite the stock decline, the company reported strong operational performance, with full-year 2025 revenue reaching $3.5 billion, up 25%, and US revenue growing 58% year-on-year in Q4. The SRT structure allows Klarna to transfer credit risk to third-party investors whilst maintaining its banking licence advantages, freeing capital for growth without proportionally expanding its balance sheet.