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Remote Kotlin / Java Backend Developer Job Opening In Poland, Poland – Now Hiring Scanz


Job description

Scanz has been working for nearly two decades in the real-time trading technology and fintech space. We deliver complex technological systems that enable serious traders worldwide. 

By joining Scanz, you’ll become a part of a company that fosters self-improvement and actively seeks out-of-the-box ideas.

Our teams work together to create the next generation of financial software solutions.

We welcome all candidates who believe, as we do, that innovation is grounded in education.

The Role

We are seeking an expert-level Backend Developer to join our dynamic team and contribute to the development of robust, scalable server-side applications and data pipelines.

You will primarily work with Spring Webflux and Kotlin (and Java).

Although existing expertise in Kotlin is preferred, a deep understanding of Java is acceptable if there’s a willingness to adapt and transition quickly.

Scanz is a leading SaaS Trader Terminal that provides a suite of real-time trading tools to help traders and investors identify live trading opportunities in the US stock market.

We are dedicated to offering our users – from trading pros to absolute beginners – an intuitive and efficient trading experience. 

Responsibilities:

  • Design and implement server-side logic using Spring Webflux and Kotlin.
  • Build robust, reliable, fault-tolerant data pipelines that process millions of operations daily.
  • Collaborate with front-end developers to integrate user-facing elements with server-side logic.
  • Develop and maintain APIs, ensuring high performance and responsiveness.
  • Contribute to database design and implementation (PostgreSQL).
  • Improve the system’s throughput and incorporate performance testing into our CI pipelines.
  • Scale services horizontally.
  • Contribute to weekly standup.


Back End Tech Stack:

  • Kotlin
  • Spring Webflux
  • Ktor Server
  • Kotlin Coroutines
  • RSocket
  • Ktor Client
  • Kotlinx Serialization
  • Quartz
  • Kotest + JUnit
  • Gradle


Front End Tech Stack:

  • Kotlin Multiplatform
  • React (with hooks)
  • SharedWorker
  • TypeScript
  • NPM
  • Gradle


Infrastructure:

  • AWS + S3
  • Prometheus
  • Grafana
  • Jenkins
  • Github


Ideal Profile

  • Strong proficiency in Kotlin / Java.
  • Proficiency with Kotlin coroutines (flows).
  • Proficiency with Spring Webflux and Reactive Streams back pressure.
  • Self-motivated developer comfortable working as a core member on an A-list team of backend and frontend developers split over different time zones.
  • Strong problem-solving and analytical skills.
  • Excellent collaboration and communication skills within an asynchronous environment (Slack, Loom).
  • Deep-level understanding of distributed systems and how to make fault-tolerant applications.
  • Experience with containerization technologies (Kubernetes, Docker).
  • Strong familiarity with database systems, particularly PostgreSQL.
  • Comfortable using AWS and cloud computing platforms.
  • Solid understanding of the testing pyramid, specifically unit, integration, and E2E tests.
  • Readiness and desire to participate in code reviews.
  • Familiar with AI tools like Claude Code.


What's on Offer?

  • Work within a company with a solid track record of success
  • Work alongside & learn from best in class talent
  • Excellent career development opportunities

Required Skill Profession

Computer Occupations


  • Job Details

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Unlock Your Remote Kotlin Potential: Insight & Career Growth Guide


Real-time Remote Kotlin Jobs Trends (Graphical Representation)

Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph here. Uncover the dynamic job market trends for Remote Kotlin in Poland, Poland, highlighting market share and opportunities for professionals in Remote Kotlin roles.

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Are You Looking for Remote Kotlin / Java Backend Developer Job?

Great news! is currently hiring and seeking a Remote Kotlin / Java Backend Developer to join their team. Feel free to download the job details.

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The Work Culture

An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at Scanz adheres to the cultural norms as outlined by Expertini.

The fundamental ethical values are:

1. Independence

2. Loyalty

3. Impartiapty

4. Integrity

5. Accountabipty

6. Respect for human rights

7. Obeying Poland laws and regulations

What Is the Average Salary Range for Remote Kotlin / Java Backend Developer Positions?

The average salary range for a varies, but the pay scale is rated "Standard" in Poland. Salary levels may vary depending on your industry, experience, and skills. It's essential to research and negotiate effectively. We advise reading the full job specification before proceeding with the application to understand the salary package.

What Are the Key Qualifications for Remote Kotlin / Java Backend Developer?

Key qualifications for Remote Kotlin / Java Backend Developer typically include Computer Occupations and a list of qualifications and expertise as mentioned in the job specification. The generic skills are mostly outlined by the . Be sure to check the specific job listing for detailed requirements and qualifications.

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Interview Tips for Remote Kotlin / Java Backend Developer Job Success

Scanz interview tips for Remote Kotlin / Java Backend Developer

Here are some tips to help you prepare for and ace your Remote Kotlin / Java Backend Developer job interview:

Before the Interview:

Research: Learn about the Scanz's mission, values, products, and the specific job requirements and get further information about

Other Openings

Practice: Prepare answers to common interview questions and rehearse using the STAR method (Situation, Task, Action, Result) to showcase your skills and experiences.

Dress Professionally: Choose attire appropriate for the company culture.

Prepare Questions: Show your interest by having thoughtful questions for the interviewer.

Plan Your Commute: Allow ample time to arrive on time and avoid feeling rushed.

During the Interview:

Be Punctual: Arrive on time to demonstrate professionalism and respect.

Make a Great First Impression: Greet the interviewer with a handshake, smile, and eye contact.

Confidence and Enthusiasm: Project a positive attitude and show your genuine interest in the opportunity.

Answer Thoughtfully: Listen carefully, take a moment to formulate clear and concise responses. Highlight relevant skills and experiences using the STAR method.

Ask Prepared Questions: Demonstrate curiosity and engagement with the role and company.

Follow Up: Send a thank-you email to the interviewer within 24 hours.

Additional Tips:

Be Yourself: Let your personality shine through while maintaining professionalism.

Be Honest: Don't exaggerate your skills or experience.

Be Positive: Focus on your strengths and accomplishments.

Body Language: Maintain good posture, avoid fidgeting, and make eye contact.

Turn Off Phone: Avoid distractions during the interview.

Final Thought:

To prepare for your Remote Kotlin / Java Backend Developer interview at Scanz, research the company, understand the job requirements, and practice common interview questions.

Highlight your leadership skills, achievements, and strategic thinking abilities. Be prepared to discuss your experience with HR, including your approach to meeting targets as a team player. Additionally, review the Scanz's products or services and be prepared to discuss how you can contribute to their success.

By following these tips, you can increase your chances of making a positive impression and landing the job!

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