Senior Java Engineer: Real-Time Finance, Hybrid (Warsaw)

Sii Poland; Warszawa; Hybrid; PLN 210,000 - 270,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Medical care

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Job summary

Sii Poland in Warsaw is seeking a seasoned Java developer to join a long-term financial sector tech initiative. You will contribute to high-performance data-driven applications and collaborate with business and engineering teams to design solutions using modern backend technologies, distributed architectures, and microservices.

You will work in a hybrid model with regular Warsaw office presence, leveraging Spring, Hibernate, and modern data platforms while communicating effectively in English

Qualifications

• At least 5 years of Java experience and OO programming
• Strong SQL skills and data modeling
• Experience designing scalable, high-availability systems
• Experience with REST-based services, distributed systems, and microservices
• Willingness to work in a hybrid model with 3 days per week in Warsaw
• Excellent English communication skills

Responsibilities

• Design and develop scalable applications based on object-oriented principles
• Translate business and technical requirements into reliable software solutions
• Build data processing components and analytical services
• Collaborate with stakeholders and cross-functional teams
• Participate in architecture, implementation, testing, and deployment; develop distributed, event-driven services and microservices

Skills

Java

OO programming

Relational databases

System architecture

RESTful services

Distributed systems

Microservices

Event-driven

English fluency

Problem solving

Education

Bachelor's degree in Computer Science

Tools

Spring Framework

Hibernate

Kafka

PostgreSQL

Job description

Sii Poland in Warsaw is seeking a seasoned Java developer to join a long-term financial sector tech initiative. You will contribute to high-performance data-driven applications and collaborate with business and engineering teams to design solutions using modern backend technologies, distributed architectures, and microservices.

You will work in a hybrid model with regular Warsaw office presence, leveraging Spring, Hibernate, and modern data platforms while communicating effectively in English