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FinTech Client #4 | Senior Java Developer

SD Solutions • Polish: C1 (Optional) • English: C1 • JavaScript • Java • Kotlin • SQL • 6 days ago
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Salary
≈ $59k – $97k per year (Estimated)
Location
In office (Warsaw)
Seniority
Senior · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 12, 2026. First seen by Alion on Oct 6, 2026.

Overview
Company
Impact
Profile match

SD Solutions

SD Solutions evolves dynamic transformation of tech-driven businesses. Operating globally for 8+ years, hiring in 15+ countries, we built a service excellence in IT staff augmentation, Employers of Record, Business Process Outsourcing, Start-up scaling, HR consulting and more.
sdsolutions.tech • Manila • Warsaw • Tbilisi • Medellín • Human Resources • Professional Services • 51-200 employees
Tech stack of SD Solutions

On behalf ofFinTechClient #4, SD Solutions is looking for a talented Senior Java Developer

SD Solutions is a staffing company operating globally. Contact us to get more details about the benefits we offer.

Responsibilities:

  • Work as a Senior Java Engineer for an online card payment system that processes millions of transactions a day for 1000+ merchants in 160 currencies, with 99,995% uptime
  • Work with technologies such as: Java, Kotlin, Spring, Hibernate, SQL, Selenium, Gradle, AWS
  • Building new features and automated tests with thehighest attention to code quality and Continuous Delivery rules
  • Finding and improving solutions for both technical and business issues
  • Working with highly skilled specialists with the most efficient technologies and tools

Requirements:

  • At least 5 years of hands-on Java development experience - not only coding but also problem-solving with a medium to high level of autonomy in projects
  • High level of expertise in Java and a solid knowledge of the listed technologies/tools
  • Academic degree in IT/programming field
  • Proven track record of delivering high-quality code with attention to scalability

    and reliability.

  • Strong analytical skills and a predisposition for innovative thinking
  • Decision-making approach and a goal-oriented attitude
  • Fluency inEnglish
  • An open-minded and easygoing personality is a must - we like to like each other!

Advantages:

  • Technologies: JavaScript (ES7+), React
  • Experience in Datadog, OpenSearch, Sentry
  • Experience in the payments/fintech industry
  • Product-based IT company experience
  • Fluency in Polish

About the company:

A global fintech company providing unified payment infrastructure and financial services for merchants and consumers worldwide. The platform integrates multiple payment channels into a single solution, combining in-house technology development and product innovation to streamline transactions at scale.

By applying for this position, you agree to the terms outlined in our Privacy Policy. Please take a moment to review our Privacy Policy https://sd-solutions.breezy.hr/privacy-notice, and make sure you understand its contents. If you have any questions or concerns regarding our Privacy Policy, please feel free to contact us.

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