Senior Java Engineer - FinTech Payments, Scale & Uptime

SD Solutions; Polska; On-site; PLN 180,000 - 280,000; Full time

Job summary

SD Solutions is seeking a Senior Java Developer to join our fintech team. You will contribute to an online card payment platform handling millions of transactions daily, collaborating with skilled engineers and delivering features with strong test coverage and CD practices.

The role emphasizes high-quality, scalable Java code, problem solving, and English fluency in a fast-paced product environment.

Qualifications

• At least 5 years of hands-on Java development experience with autonomy in projects.
• High level of expertise in Java and solid knowledge of listed technologies/tools.
• Academic degree in IT/programming field.
• Proven track record of delivering high-quality code with scalability and reliability.
• Strong analytical skills and proactive problem solving.
• Fluency in English and a goal‑oriented mindset.

Responsibilities

• Develop as a Senior Java Engineer for an online card payment system handling millions of transactions daily.
• Build features and automated tests with emphasis on code quality and continuous delivery.
• Address technical and business issues and improve scalable, reliable solutions.
• Collaborate with highly skilled specialists using modern tools and technologies.

Skills

Java

Spring

Hibernate

SQL

Kotlin

Selenium

Gradle

AWS

Analytical skills

English

Education

Academic degree in IT

Tools

Datadog

OpenSearch

Sentry

Job description

SD Solutions is seeking a Senior Java Developer to join our fintech team. You will contribute to an online card payment platform handling millions of transactions daily, collaborating with skilled engineers and delivering features with strong test coverage and CD practices.

The role emphasizes high-quality, scalable Java code, problem solving, and English fluency in a fast-paced product environment.