#1 Job Board for tech industry in Europe

  • Job offers
  • Principal JavaScript Engineer
    New
    JS

    Principal JavaScript Engineer

    Warszawa
    58 - 68 USD/hNet per hour - B2B
    58 - 68 USD/hNet per hour - B2B
    Type of work
    Full-time
    Experience
    Senior
    Employment Type
    B2B
    Operating mode
    Hybrid
    Winged IT

    Winged IT

    Winged IT is one of the fastest-growing companies in Poland, specializing in recruiting and delivering top-tier IT professionals. We support global organizations in building technology teams across sectors such as Software Development, FinTech, AI, Cybersecurity, Gaming, Pharma, and Logistics. Additionally, we have extensive experience in establishing Polish branches for international companies—offering comprehensive support to help our clients successfully enter the Polish market and drive their business growth.

    Company profile

    Tech stack

      English

      B2

      JavaScript

      master

      Node.js

      advanced

      React

      advanced

      AWS

      regular

    Job description

    Online interview
    Friendly offer

    Employer: Klarna

    Location: Warsaw (hybrid work: 2-3 days in the office)

    Rate: 220 - 255 PLN per hour

    Cooperation model: B2B or Employment Contract

    Start date: ASAP

    Duration: long-term agreement

    Recruitment process: 1 timed Abstract and Logical Reasoning Test (up to 15 minutes); 1 short interview (up to 30 minutes)


    Do you want to play a key role in revolutionizing the future of finance? Join Klarna - a global leader in deferred payments, with over 85 million active users and 2.5 million transactions processed daily! As a pioneer in modern payment solutions, Klarna is developing innovative methods that streamline the shopping experience, enhance transaction security, and expand the availability of purchasing options. 


    We're seeking individuals eager to achieve remarkable results and share their bold vision to redefine the future of payments and fintech. Send us your CV - we can’t wait to meet you!

     

     

    What You will do:

    -> Use your deep technical knowledge to drive and shape the technical direction of our Klarna products;

    -> Produce high quality code that impacts millions of customers a day;

    -> Become a technical expert within your team and beyond;

    -> Represent your team in discussions with other teams and groups across our global organization;

    -> Guide and mentor others on the team;

    -> Deliver results today, and help the team prepare their strategy and roadmap for the future.

     

    Your skills and experiences:

    -> 12+ years of experience with JavaScript and hands-on experience in backend development;

    -> Proficient in React (or another JS framework), Node.js, Cypress, Jenkins, AWS and other systems ;

    -> Experienced and knowledgeable in building functional, user friendly, and extremely scalable products;

    -> Proficient in software architecture including best-practice, design principles and have contributed to large-scale builds on both frontend and backend;

    -> Proven track record of delivering influential software, preferably in complex business models and highly transactional environments;

    -> Working proficiency and communication skills in verbal and written English.

     

    Our client offers:

    + Great opportunity for personal development in a stable and friendly large multinational company;

    + Start-up mentality, small agile teams;

    + Global Reach: Impact millions with seamless shopping and payments;

    + Career growth and additional education.

     

    If interested, please apply safely through this portal (application rules are in accordance with GDPR). Employment agency Nr 17138.


    58 - 68 USD/h

    Net per hour - B2B

    Check similar offers

    Full-stack Developer (Java & TypeScript) for Algo Trading System

    New
    Bank of Montreal, via Vistulo
    8.04K - 9.38K USD/month
    Warszawa
    , Fully remote
    Fully remote
    TypeScript
    Java
    JavaScript