Senior Back-end Developer w Warszawa, Polska

Senior Back-end Developer

Miejsce pracy: Warszawa

Technologies we use

Expected

• Java
• Spring Boot
• AWS
• Cloudflare
• SQL
• Oracle
• Kafka
• Docker
• Jenkins
• Maven
• Git

Optional

• Redis
• OpenShift
• Angular
• Jira
• Confluence
• IntelliJ
• Visual Studio Code

About the project

At Cyclad, we work with top international IT companies to help them deliver cutting-edge technologies and innovative digital solutions. We are currently looking for an experienced Senior Back-end Developer to join a team responsible for designing, developing, and maintaining scalable, secure, and high-quality backend solutions.

The project focuses on backend development, code optimization, and building maintainable and reliable applications. In this role, you will work with Java 21, Spring Boot 4.x, REST APIs, cloud technologies, and infrastructure automation, contributing to technical improvements while collaborating with business and technical stakeholders.

Project information:

Type of project: IT services

Office location: Warsaw, Poland

Work model: Hybrid (3 days in the office and 2 days remotely)

Budget: 85–120 PLN net/hour – B2B

Experience: 6+ years

Project length: Long-term

Start date: ASAP (depending on the candidate's availability)

Only candidates with citizenship in the European Union and résidence in Poland

This is how we organize our work

This is how we work

• you focus on a single project at a time
• you have influence on the technological solutions applied
• you focus on product development
• agile
• scrum
• kanban

Team members

• backend developer
• technical leader
• architect
• devOps

Your responsibilities

• Design and develop high-quality backend components and scalable solutions
• Build secure, maintainable, and testable applications
• Collaborate with business and technical stakeholders to understand and refine requirements
• Assess technical feasibility and propose appropriate solutions
• Optimize existing code to improve performance and maintainability
• Support testing, deployment, and technical documentation
• Share technical best practices and support less experienced developers
• Contribute to continuous improvement within an Agile development environment

Our requirements

• Strong hands-on experience in backend development, with at least 5 years of relevant experience
• Expert knowledge of Java 21 and Spring Boot 4.x
• Expert knowledge of and REST APIs
• Experience with AWS or other cloud platforms
• Knowledge of Infrastructure as Code, particularly CloudFormation or CDK
• Experience with SQL and Oracle
• Knowledge of Kafka or other streaming technologies
• Experience with Docker, Jenkins, Maven, and Git
• Knowledge of OWASP security standards
• Strong understanding of Agile methodologies, including Scrum and Kanban, as well as DevOps practices
• Fluent professional English
• Strong analytical and problem-solving skills
• Ability to work independently while collaborating effectively within an Agile team
• Willingness to work in a hybrid model, with 3 days per week in the Warsaw office

Optional

• Experience with Redis
• Knowledge of OpenSearch
• Experience with Angular 20+
• Familiarity with Jira and Confluence
• Experience with IntelliJ IDEA or Visual Studio Code

What we offer

• Full-time cooperation agreement based on B2B
• Private medical care with dental care (covering 70% of costs)
• Multisport card (also for an accompanying person)
• Life insurance
• Opportunity to work in an international IT environment

This is how we work on a project

• code review
• Continuous Deployment
• Continuous Integration
• DevOps
• documentation
• integration tests
• test automation
• testing environments
• unit tests
• manual tests

Development opportunities we offer

• intracompany training
• mentoring
• substantive support from technological leaders
• technical knowledge exchange within the company

Benefits

• sharing the costs of sports activities
• private medical care
• life insurance
• remote work opportunities
• flexible working time
• integration events
• dental care
• no dress code

Recruitment stages

• Introductory HR call
• Technical interview
• Final decision

Cyclad

In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting edge technologies that shape the world of the future.

Please enclose the following statement in your application: I hereby give consent for my personal data contained in the submitted application documents to be processed by Cyclad sp. z o.o., ul. Chłodna 48/1, 00-872 Warszawa, including my image, in relation to my participation in the recruitment process. I acknowledge that the above consent may be withdrawn at any time.
If you are interested in participating in future recruitment processes, please enclose the following statement in your application: I hereby give consent for my personal data contained in the submitted application documents to be processed by Cyclad Sp. z o.o., Cyclad sp. z o.o., ul. Chłodna 48/1, 00-872 Warszawa, including my image, in relation to my participation in future recruitment processes. I acknowledge that the above consent may be withdrawn at any time. The Personal Data Controller is Cyclad Sp. z o.o., ul. Chłodna 48/1, 00-872 Warszawa, e-mail: [email protected], contact with the Data Protection Officer is available via e-mail: [email protected]. Personal data collected through job applications (CV) within the scope provided for in labor regulations shall be processed in order to allow performance of the ongoing recruitment pursuant to Art. 6(1)(a) of Regulation (EU) no. 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of individuals with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (further referred to as GDPR). In case of giving consent to processing of data for future recruitment processes – personal data shall be processed under the consent, pursuant to Art. 6(1)(a) of the GDPR. If the Application form contains data referred to in Art. 9(1) of the GDPR, it shall be necessary to have the candidates consent for the processing of such data (Art. 9(2)(a) of the GDPR). The consent can be revoked at any time. Withdrawal of the consent shall not affect the lawfulness of the processing that had been performed under the consent prior to its withdrawal. Personal data provided by the candidate related to: - participation in a selected recruitment process will be stored until the recruitment process is completed for a given position, - participation in future recruitment processes will be stored until the candidate's consent to the processing of their data for this purpose is withdrawn, no longer, however, than for 5 years since the last update of the candidate’s data. Personal data may be disclosed to employees or associates of the Company, entities providing support to the Company on the basis of outsourced services or in accordance with data processing agreements, to entities authorized under the law, as well as to entities collaborating with the Company within the scope of job placement, in order to conduct recruitment processes. After the employee’s consent, personal data may also be disclosed to a potential employer for whom the recruitment process is being conducted. Submission of the candidate’s personal data within the scope under Art. 221 of the Labor Code is obligatory for participation in the recruitment process. Submission of other data by the candidate is voluntary. No submission of personal data within the required scope or objection to the processing of such data shall result in lack of possibility to include the Application in the recruitment processes conducted by the Company. The candidate has the right to access and rectify the contents of their data, remove such data, limit its processing, transfer such data, submit objection to the processing and revoke the consent at any time, without affecting the lawfulness of the processing conducted under such consent before it was withdrawn. The candidate also has the right to file a complaint with the President of the Office for Personal Data Protection when they consider the processing of their personal data to be a violation of the provisions of the GDPR.