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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on developing and expanding trading systems for a major North American bank. Key stack includes Java (8, 17, 21) with emphasis on low-level programming, multithreading and data structures; Spring Boot and AWS experience are desirable. Responsibilities include designing and implementing backend solutions, developing platform subsystems, writing tests, collaborating with operations and diagnosing production issues. Role is fully remote and requires overlap with US Eastern hours during onboarding.
from: 12 November 2026
to: 12 December 2026
220 - 240 złnet (+ VAT)/ hr.B2B contract (full-time)
Offer parameters
level:senior
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
Java
Optional technologies
AWS
Spring Boot
Our requirements
- Current Java programming experience, with a strong understanding of programming concepts, including algorithms, complexity, and multi-threading, and Java’s language capabilities and standard libraries.
- Good knowledge of the data structures: familiarity with the Java collections framework, depth of understanding of the commonly used data structures, intuition on what to use when.
- Experience building distributed systems based on event-driven architectures.
- Strong analytical and problem-solving skills, to effectively diagnose production performance issues measured in microseconds.
- 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.
Optional
- Experience with financial markets and trading systems.
- Knowledge of AWS systems.
- Experience with Spring boot (some teams).
- Experience working remotely with North American firms.
- A computer science degree from a top school.
Your responsibilities
- Design and implement robust software solutions for the bank’s trading systems using core Java (versions vary from team to team, and include 8, 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.
About the project
Join the Java Engineering Team at a top N. American Bank
Are you a Java engineer who enjoys working on large-scale and high-performance software? Do you love working with smart people on meaningful technology? Want to work in capital markets on financial trading systems? If so, read on.
The Role at a Glance
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.
This is how we organize our work
This is how we work
at the client's siteyou have influence on the choice of tools and technologiesyou have influence on the technological solutions appliedyou have influence on the product
Why Join Us?
A successful candidate will be a very strong programmer with current Java development experience. They must also be curious, open-minded, and desire to learn new things. English proficiency is a must.
This role is for developers who excel at programming core Java from the ground up, not just integrating frameworks or APIs. If you’re fascinated by understanding systems ‘under the hood,’ this role is for you. Successful candidates enjoy geeking out about data structures and debugging application performance issues.
This is a fully remote backend Java development role for a developer in Poland or Romania. You will be working through a Polish company that will provide the support and administrative assistance to make you successful in the role. We are looking for people to join the team long-term.
Different teams have different working hour arrangements. For all roles, to ensure efficient onboarding, you’ll work in sync with the American team during US Eastern business hours for the first two months. Working this way maximizes your time overlap for answering questions, which means you can learn quickly. That means working until 21:00 CET. After that, some teams offer more flexibility your schedule can shift closer to standard Polish business hours.
Only open to residents of Poland and Romania. Citizens and legal residents with permission to work in Poland or Romania are welcome.
What we offer
- 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 client team in North America and in Europe.
- 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 with increasing schedule flexibility post-onboarding.
- Competitive Compensation: Above-average pay and ample time-off options.
Recruitment stages
- 1.Submit your CV.
- 2.Answer a few written questions
- 3.Short programming exercise which you can do at your own pace
- 4.Participate in a three-stage interview process:
- 5.Discuss your experience and skills
- 6.Solve verbal algorithm problems
- 7.Tackle live coding challenges (no trick questions)
VISTULO sp. z o.o.
We have expertise in designing offshore teams, hiring locally, and setting up processes, tools, and communications for continued success. We've have in-house experience building software development teams in Poland, Ukraine, and across Europe for American companies.
Senior Java Backend Engineer
220–240 zł / hr. (B2B)
I apply to:
VISTULO sp. z o.o.
Warszawa, Masovian
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