Senior Java Backend Engineer (Core Java, Trading Systems)

VISTULO sp. z o.o.; Remote; PLN 287,000 - 395,000; Full time

Job summary

A leading technology firm is seeking an experienced Java engineer to join their financial trading systems team. This fully remote role is for talented individuals with 6+ years in backend development. You will design robust software solutions, collaborate across teams, and support production systems. Enjoy competitive compensation and a commitment to professional growth while working on meaningful projects within an established financial institution that processes millions of transactions daily.

Benefits

Competitive Compensation

Professional growth opportunities

Flexibility & remote work options

Qualifications

• 6+ years of experience in Java backend development.
• Ability to work during US Eastern business hours during onboarding.

Responsibilities

• Design and implement software solutions for trading systems.
• Collaborate with operations teams for new features.
• Support production issues including diagnostics.

Skills

Strong understanding of programming concepts

Knowledge of internals of Java data structures

Experience with distributed service-based applications

Strong analytical and problem-solving skills

Ability to explain non-trivial systems and algorithms

Job description

• Join the Java Engineering Team at a top N. American Bank
• Are you a skilled Java engineer who thrives on building high-performance systems? Do you love working with smart people on meaningful technology? Want to work on large systems that power real-time trading across global markets? If so, read on.
• The Role at a Glance
• Fully remote for a top N. American bank (for residents of Poland only)
• Openings on multiple teams in the capital markets division (prime brokerage, platform team)
• Part of the core team - this is not a legacy support role or an outsourced B team
• We’re hiring experienced backend engineers (6+ years) to join a major N. American bank — directly supporting the development of financial trading systems. This is not a legacy maintenance or support role — you’ll be part of the core product team, building highly-performant, low-latency systems used across the firm.
• Are you a passionate Java developer who thrives on solving complex problems in low-latency, high-throughput trading systems? Join us and work on interesting financial system engineering problems.

responsibilities :

• Design and implement robust software solutions for the bank’s trading systems using core Java (17 and 21).
• Understand, develop, and improve the subsystems used by other teams in the trading platform.
• Create thorough test cases to ensure software stability and reliability.
• Collaborate with operations teams regarding building new features and improving existing functionality.
• Support production issues, including root-cause analysis and diagnosis.

requirements-expected :

• Strong understanding of programming concepts, including algorithms, complexity, and data structures.
• Knowledge of the internals of Java data structures.
• Experience building distributed service-based applications based on message queues.
• Strong analytical and problem-solving skills.
• Open mind, curiosity, and a strong desire to learn new technologies and business domains.
• Ability to clearly explain non-trivial systems and algorithms.
• Ability to follow and understand technical conversations.
• Know when and how to ask questions that speed up learning.
• Ability to align your working schedule to US Eastern business hours during onboarding.

offered :

• Work that matters in the financial domain: Work on a trading system at an established financial institution, processing millions of transactions daily.
• Professional growth: Collaborate with smart, highly capable developers in a supportive and challenging environment.
• Direct collaboration: You will work directly with the the client team in North America and in Poland.
• 1st-tier work: This is not a technical support or legacy maintenance role. The system is functional and is actively being built and you will take part in updating it. The people who built the system are still part of the team.
• Long-term commitment: This is not a fixed-scope or fixed-term outsourcing role; we value people who want to grow and contribute long-term.
• Flexibility & remote work: Fully remote position based in Poland with increasing schedule flexibility post-onboarding.
• Competitive Compensation: Above-average pay and ample time-off options.