Senior Java Software Engineer

SD Solutions; Polska; Presencial; PLN 180.000 - 280.000; Jornada completa

Descripción de la vacante

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.

Formación

• 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.

Responsabilidades

• 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.

Conocimientos

Java

Spring

Hibernate

SQL

Kotlin

Selenium

Gradle

AWS

Analytical skills

English

Educación

Academic degree in IT

Herramientas

Datadog

OpenSearch

Sentry

Descripción del empleo

On behalf of FinTech Client #4, SD Solutions is looking for a talented Senior Java Developer

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 the highest 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 in English
• An open-minded and easygoing personality is a must - we like to like each other!

Advantages:

• 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.