Hire the Top 3% of Freelance Klarna API Developers

Toptal is a marketplace for dedicated Klarna API developers, engineers, programmers, coders, architects, and consultants. Top companies and startups choose Toptal Klarna API freelancers for their mission-critical development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance Klarna API Developers and Engineers

Klas Mellbourn

Freelance Klarna API Developer
SwedenToptal Member Since October 14, 2022

A full-stack developer, Klas has worked professionally since 1994. For the last six years, he has worked at Klarna, where he has participated in developing their app from the start and is ranked third on the list of most commits to the Klarna app monorepo out of over 500 developers and three million lines of code in TypeScript. Klas has worked with React, React Native, and Node.js at Klarna and was one of the people who introduced TypeScript and GraphQL. He loves the challenge of freelancing.

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Max Ryan Synnott

Freelance Klarna API Developer
New ZealandToptal Member Since January 28, 2022

Max is a full-stack software engineer specializing in TypeScript, Node.js, React, and AWS. He has developed core back-end services and front-end components of the Klarna app, which has millions of active users worldwide and has consistently ranked number one on the App Store in the shopping category. Max has professional experience with many tools and technologies and has worked with large and small teams. He looks for opportunities to build great solutions for unique and interesting problems.

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Alexey Romanov

Freelance Klarna API Developer
UkraineToptal Member Since May 11, 2017

Alexey has over a dozen years of commercial software development experience, mostly on large enterprise level web applications—building custom API architecture, external services integration, improving performance, and more. He's experienced with various app domains: eCommerce, eLearning, SDK, CRM systems, VoIP, analytical marketing web tools, and dashboards. He's active in Drupal community—making many contributions to Drupal 8 core and modules.

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Sadiqul Islam

Freelance Klarna API Developer
BangladeshToptal Member Since February 13, 2021

Sadiqul is a passionate developer with over 12 years of overall experience, including several successful software development projects like fintech, ride-share, eCommerce, telco, and more. He finds development to be a style of art—the art of data structure, the art of algorithms, the art of design patterns, the art of communication with colleagues, and the art of delivering the product.

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Sebastian Wasser

Freelance Klarna API Developer
PolandToptal Member Since January 6, 2021

Sebastian started working professionally as a software developer before finishing high school. This drive to apply his skills to solve problems jump-started his career, and to this day, it is the same driving force that he applies to his work every day. Sebastian excels in coming up with unconventional solutions to client problems: his clients' success is his ultimate goal.

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Ammar Veljagic

Freelance Klarna API Developer
Bosnia and HerzegovinaToptal Member Since October 6, 2022

Ammar is a software developer and problem-solver who equally enjoys working with people and computers. He finds value in working on projects by himself and as part of a team and mentors junior colleagues when needed. Ammar prides himself on being a fast learner and adaptable to any situation. He believes in continuous improvement and is eager to learn new things and prove himself.

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Discover More Klarna API Developers in the Toptal Network

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Toptal in the press

... allows corporations to quickly assemble teams that have the right skills for specific projects.

Despite accelerating demand for coders, Toptal prides itself on almost Ivy League-level vetting.

Our clients
Creating an app for the game
Conor Kenney
Creating an app for the game
Leading a digital transformation
Elmar Platzer
Leading a digital transformation
Building a cross-platform app to be used worldwide
Building a cross-platform app to be used worldwide
Drilling into real-time data creates an industry game changer
Drilling into real-time data creates an industry game changer
Tripcents wouldn't exist without Toptal. Toptal Projects enabled us to rapidly develop our foundation with a product manager, lead developer, and senior designer. In just over 60 days we went from concept to Alpha. The speed, knowledge, expertise, and flexibility is second to none. The Toptal team were as part of tripcents as any in-house team member of tripcents. They contributed and took ownership of the development just like everyone else. We will continue to use Toptal. As a startup, they are our secret weapon.

Brantley Pace

CEO & Co-Founder

I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted. I hired him immediately and he wasted no time in getting to my project, even going the extra mile by adding some great design elements that enhanced our overall look.

Paul Fenley


The developers I was paired with were incredible -- smart, driven, and responsive. It used to be hard to find quality engineers and consultants. Now it isn't.

Ryan Rockefeller


Toptal understood our project needs immediately. We were matched with an exceptional freelancer from Argentina who, from Day 1, immersed himself in our industry, blended seamlessly with our team, understood our vision, and produced top-notch results. Toptal makes connecting with superior developers and programmers very easy.

Jason Kulik


As a small company with limited resources we can't afford to make expensive mistakes. Toptal provided us with an experienced programmer who was able to hit the ground running and begin contributing immediately. It has been a great experience and one we'd repeat again in a heartbeat.

Stuart Pocknee


How to Hire Klarna API Developers Through Toptal


Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.

Work With Hand-Selected Talent

Within days, we'll introduce you to the right Klarna API developer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

Work with your new Klarna API developer for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.


  • How are Toptal Klarna API developers different?

    At Toptal, we thoroughly screen our Klarna API developers to ensure we only match you with talent of the highest caliber. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut. You’ll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expert vetted talent from our network, custom matched to fit your business needs.

  • Can I hire Klarna API developers in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with a Klarna API developer within 48 hours of signing up.

  • What is the no-risk trial period for Toptal Klarna API developers?

    We make sure that each engagement between you and your Klarna API developer begins with a trial period of up to two weeks. This means that you have time to confirm the engagement will be successful. If you’re completely satisfied with the results, we’ll bill you for the time and continue the engagement for as long as you’d like. If you’re not completely satisfied, you won’t be billed. From there, we can either part ways, or we can provide you with another expert who may be a better fit and with whom we will begin a second, no-risk trial.

Tap Into World-Class Talent

  • Trusted Experts Only

    Trusted Experts Only

    All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.

  • The Right Fit

    The Right Fit

    We have a knack for matching you with the right fit. Start working with your new hire on a no-risk trial period, paying only if satisfied.

  • Scale as Needed

    Scale as Needed

    Hire talent within 48 hours and scale your team up or down as needed, no strings attached.

  • Seamless Hiring

    Seamless Hiring

    We handle all aspects of billing, payments, and NDA’s. Let us take care of the overhead while you focus on building great products.

  • Flexible Engagements

    Flexible Engagements

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • Expert Talent Matching

    Expert Talent Matching

    Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

Top Klarna API Developers Are in High Demand.

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