Frontend Backend Developer Java17 Kotlin Spring PostgreSQL Javascript HTML (f/m/x) Prague

On behalf of our client, an international financial service provider located in Prague, we are looking for an external resource with skills and abilities as stated below:

Frontend Backend Developer Java17 Kotlin Spring PostgreSQL Javascript HTML Json RestAPI UI RabbitMQ AMQP (f/m/x) Prague -

Description:

The Software Engineer has the skills to develop large and/or complex programs, incl. design, coding and testing.

As part of test responsibilities, the Software Engineer defines and creates test cases, executes test activities and reports on progress.

Tasks and responsibilities:

As a Software Engineer on our team, you will contribute to the end-to-end development of our platform.

Your responsibilities will be tailored to your strengths, but will include:

• Designing, developing, and maintaining key components of our trading platform, with a focus on writing clean, efficient, and scalable code.
• Taking ownership of features and initiatives, helping to onboard new technologies that drive product innovation.
• Collaborating closely with peers, product managers, and stakeholders to analyze, refine, and validate project requirements.
• Contributing to the development of solutions from the initial design stage through to successful deployment in a production environment.
• Ensuring seamless integration between our modern Front End interfaces and critical Back End services, including messaging and event-driven systems.
• Debugging and resolving complex issues across the technology stack to ensure platform stability and reliability.

Mandatory skills and experiences:

We are looking for engineers with a strong foundation in their area of expertise and a desire to collaborate across the technology stack. You are not expected to be an expert in all areas.

If your strength is in Back End Development, we're looking for:

• Core Languages: Strong proficiency in Java (we use Java 17) and/or Kotlin.
• Core Framework: Deep experience with the Spring Framework.
• Database and Persistence: Solid understanding of SQL (ideally PostgreSQL) and persistence frameworks like Hibernate.
• Middleware: Hands-on experience with messaging or event-driven architectural patterns.
• An interest in or familiarity with how Front End applications consume APIs (HTML, JavaScript, REST) is a plus.

If your strength is in Front End Development, we're looking for:

• Core Technologies: Strong proficiency in HTML, CSS, JavaScript, and JSON.
• Modern Front End: Deep experience with modern JavaScript frameworks like React, including build tools like Node.js.
• Real Time Communication: Experience with WebSocket for Real Time data flow.
• API Integration: Proven ability to work with and consume REST APIs.
• An understanding of the Back End services that power the UI is a significant advantage.

Essential Skills for All Candidates:

• Versioning: Solid experience with Git-based version control.
• Problem Solving: A proactive approach to debugging and resolving complex technical issues.
• Collaboration: Excellent communication skills and a team-oriented mindset.

Optional Skills:

Skills That Will Give You an Advantage:

• Event Streaming: Practical experience with RabbitMQ Streams, AMQP.
• High-Performance Communication: Familiarity with frameworks like Protobuf/gRPC.
• Build & Automation: Knowledge of build tools such as Gradle or Maven.
• DevOps & Containerization: Experience with Docker, Jenkins, and container platforms like OpenShift.

Additional information:

• Start date of assignment: ASAP
• Initial contract duration: 31.12.2026
• Degree of employment: Full-time
• Location: Prague (50 % remote)

Please let us know if this project is of interest to you and when you could be available. We are looking forward to your reply.

Best regards,

Andy

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