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Java Developer

ComeOn Group in short

Founded in 2008, ComeOn Group is a leading global player in the rapidly growing iGaming market. Having launched its first online brand in 2010, ComeOn Group is running a wide range of exciting brands across multiple markets. Operating more than 20 brands on its proprietary platform providing a secure, innovative and entertainment-led player experience across casino and sports betting. ComeOn Group is an international employer within the iGaming industry and has over 500 talented employees across 7 main locations. 

Location : Katowice, Poland -Hybrid/Remote

The Website

The ComeOn.com website is a service-oriented web application with stability, high performance and user experience being top priority. The frontend is optimized for multi-device web solutions and the tech stack consists of HTML5, CSS3/4, and Javascript with React. For client-side state management, we make use of Redux. On the server side, the business logic is proprietary developed Java code together with open-source frameworks and external integration modules.

The database is a MySQL cluster with distributed and dedicated report servers and data warehouse. We are continuously looking for new technologies and innovative solutions to offer our customers a competitive gaming experience.

Responsibilities:

We are looking for a Java developer to help us build the best gambling site on the Internet. You will work with all parts of the system and all stages of the development process in a team-oriented environment. This includes integrations with external systems, the development of internal components and subsystems, and potentially also frontend development for mobile and desktop devices. You as a developer will work closely together with the business side of the organization to develop and implement new features. You will be working with modern technologies such as Java, Kafka, Docker, MongoDB, MySQL, React, Springboot, deployed as a Debian package, or in Kubernetes. The role also involves reading code written over 15 years, by around 60 developers, and finding manageable paths to modernize it in risk-adverse increments.

About you:

  • Deep experience in using Java.
  • You understand that reading code is more difficult than writing code.
  • You should have about 6+ years of previous work experience.
  • Experience with web application/service development.
  • SQL Knowledge.
  • You know how to get legacy code under test.
  • You need to be curious and willing to discuss and exchange knowledge with team members.
  • You need to be a communicative member of an agile delivery team consisting of Devs, QAs and PO.
  • It would be advantageous if you have experience with some of the other technologies that we use; Tomcat, Maven, Spring, MongoDB, Guava, Guice, MySQL, Nginx, Linux, Jenkins, and GIT, docker, Kubernetes, gcloud.
  • You must be fluent in written and spoken English.

    Benefits
    So what can you expect from ComeOn as a place of work?
    • A competitive remuneration package inc. a company bonus scheme! 💰
    • Fantastic quarterly team events and weekly company events 😎
    • A one-time bonus to help you set up a comfortable workstation at home (we’re truly Hybrid!)
    • On top of our Hybrid work arrangement, up to 40 days a year to work fully remote from anywhere 🌎
    • Karta Multisport
    • Private health insurance

At ComeOn, we've embraced a Hybrid Work model, giving our employees the flexibility to work some days at home. Our offices are thoughtfully designed to support this model, featuring practical workspaces for focused efforts and collaborative zones for dynamic creative exchanges. We believe in the power of collaboration to drive innovation and success. While our offices are known for their vibrant atmosphere, rest assured that our primary focus is on achieving results together. We prioritize efficiency and maintain a balance between hard work and camaraderie. When you visit our offices, expect a warm welcome and professional support. Choose ComeOn for your next career move, and experience a workplace that values productivity, teamwork, and the spirit of collaboration.

At ComeOn Group we value diversity and we take concrete action to ensure fairness in our recruitment process. We are committed to assessing candidates on their merit without discriminating against any applicant for whatever reason that is protected by law. We truly value you, as you are.

Want to know more about us just visit our website www.comeon-group.com or any of our social media channels to take a deep dive into our culture!



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Average salary estimate

$72500 / YEARLY (est.)
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$60000K
$85000K

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What You Should Know About Java Developer, ComeOn Group

ComeOn Group is searching for a talented Java Developer to join our dynamic team! As a leading player in the iGaming industry since 2008, we’re passionate about creating the best online gambling site, and we want you to help us achieve that. Based in Katowice, Poland, this hybrid/remote role allows you the freedom to work from home while collaborating closely with your team. As a Java Developer, you’ll be involved in every aspect of our development process. Your days will be filled with exciting tasks such as integrating external systems, building internal modules, and potentially dabbling in frontend development with technologies like React. Your expertise in Java, coupled with your curiosity to improve legacy code, will be essential as you navigate through code written by 60 developers over the past 15 years. We pride ourselves on using modern technologies including Kafka, Docker, and MySQL, and we encourage you to bring your fresh ideas and innovative approaches. At ComeOn, we value not only your technical skills but also your ability to communicate and work effectively within our agile team. Enjoy a competitive salary package, a range of perks including health insurance and fitness programs, and the chance to participate in cheerful team events! Explore a workplace that thrives on collaboration, innovation, and personal growth. If you’re ready to make a difference and grow your career with us, ComeOn Group is the place to be!

Frequently Asked Questions (FAQs) for Java Developer Role at ComeOn Group
What are the responsibilities of a Java Developer at ComeOn Group?

As a Java Developer at ComeOn Group, you'd be responsible for building and enhancing our online gambling platform. This includes working on integrations with external systems, developing internal components and subsystems, and possibly participating in frontend development. You’ll collaborate closely with other team members, ensuring the successful implementation of engaging features, utilizing modern technologies like Java, Kafka, and Docker.

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What qualifications are needed to apply for the Java Developer position at ComeOn Group?

To be considered for the Java Developer role at ComeOn Group, candidates should ideally possess 6+ years of experience in web application/service development, proficient knowledge of Java, and SQL understanding. It's also advantageous if you have experience with modern technologies we use, including Docker, Spring, and MongoDB. Strong communication skills and a collaborative mindset in an agile environment are key!

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What technologies will a Java Developer use at ComeOn Group?

At ComeOn Group, a Java Developer will work with a range of modern technologies including Java, Kafka, Docker, MySQL, and React. You will also encounter various external frameworks and tools, assisting in delivering a seamless and efficient gambling platform. This position offers a great opportunity to deepen your skills while working with cutting-edge tools in a collaborative environment.

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What benefits does ComeOn Group offer for Java Developers?

ComeOn Group values its employees and offers a competitive remuneration package, including a company bonus scheme. Additional perks include up to 40 days a year of remote work, fitness program benefits, private health insurance, and various team events. Our hybrid work model ensures you have the flexibility to balance your home and work life effectively.

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What is the company culture like at ComeOn Group for a Java Developer?

ComeOn Group fosters a vibrant and collaborative company culture where teamwork and innovation are prioritized. As a Java Developer, you'll find an environment that encourages open communication, knowledge exchange, and continuous improvement, all while enjoying the perks of a hybrid work setting designed to enhance productivity and camaraderie among staff.

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Common Interview Questions for Java Developer
Can you describe your experience with Java and how it applies to the role at ComeOn Group?

When discussing your experience, focus on specific projects where you've successfully applied Java, especially in developing web applications. Highlight your problem-solving approach, how you navigate legacy code, and your familiarity with other technologies used in the company, such as Spring or Docker. Provide examples of challenges you've overcome in those projects.

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How do you approach reading and modernizing legacy code?

In responding to this question, emphasize your understanding that reading code can be more challenging than writing it. Share your experience with inspecting code, identifying areas for improvement, and the strategies you employ to modernize code effectively. It would also be beneficial to illustrate how you ensure that changes are risk-averse and maintain the integrity of the system.

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What modern technologies do you have experience with related to this position?

A robust answer would include a list of technologies, such as Kafka, Docker, or MySQL, that you have worked with. Discuss how you've used these tools to enhance application performance or improve architecture and how they relate to the systems used at ComeOn Group, illustrating your preparedness for the role.

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How do you ensure effective communication within an agile team?

To answer this, provide examples of your previous experiences working in agile teams. Discuss the tools you used for communication, like Jira or Slack, and how you facilitated collaboration amongst developers, QAs, and product owners to ensure successful project delivery and maintain transparency in progress.

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What strategies do you employ for testing and validating legacy code?

It’s crucial to showcase any specific strategies that you’ve successfully implemented, such as writing unit tests, using test-driven development (TDD), or utilizing code reviews. Emphasize the importance of setting up a robust testing framework that helps reduce errors and ensures reliability in legacy systems.

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What has been your experience with SQL and database management?

Discuss your proficiency in SQL, sharing how you've utilized it for data manipulation and reporting in previous projects. Mention specific databases you've worked with, like MySQL, and any experiences you have with optimizing performance, managing data integrity, and executing complex queries in your roles.

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Can you provide an example of a challenging problem you solved in a previous development role?

Be prepared with a specific instance where you faced a significant obstacle in your development process. Describe the problem, your approach to finding a solution, and the outcomes of your efforts. Focus on how this experience shapes your problem-solving skills relevant to the role at ComeOn Group.

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How do you stay updated with the latest trends in Java and development technologies?

Demonstrate your commitment to continuous learning by discussing the resources you use to stay current, like online courses, coding boot camps, tech forums, or conferences. Mention any recent technologies you've explored and how they might benefit your work at ComeOn Group.

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What role does documentation play in your development process?

Highlight the significance of documentation in maintaining clear communication and knowledge transfer within the team. Discuss your approach to documenting processes, code, and changes, illustrating how it contributes to creating a sustainable work environment within teams like the one at ComeOn Group.

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Why do you want to work for ComeOn Group as a Java Developer?

Articulate your passion for the iGaming industry and ComeOn Group's innovative approach. Share what excites you about their projects, culture, and hybrid work model. Tailor your answer to reflect how your skills and values align with ComeOn Group’s mission and how you see yourself contributing to the team.

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To offer all players a safe, entertaining and personalised experience through engaging brands and products by using the power of data and continuously striving to improve, simplify, and innovate.

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DATE POSTED
March 13, 2025

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