Drools Consultant / Rule Engine Expert
Offer summary

(Summary generated by AI based on the full job description)

The project focuses on implementing and optimizing rule-based decision systems in the travel industry. Technologies used include Drools, Business Central, KIE Server, CEP, Java, Spring Boot, Hibernate. Key responsibilities involve supporting teams in Drools solutions, defining rule architecture standards, analyzing performance and scalability, integrating with microservices architecture, and contributing to coding and optimization efforts. The hourly rate is 170-200 PLN net. Benefits include private medical and dental care, sports activity funding, flexible working hours, and a remote work model.

you can start ASAP

Drools Consultant / Rule Engine Expert

Company: Cyclad

from: 29 May 2026
to: 28 June 2026
170 - 200net (+ VAT)/ hr.B2B contract (full-time, part time)
Salary details
basic salary
Offer parameters
level:senior • expert
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

Spring
Spring Boot
Hibernate
Drools

Optional technologies

OptaPlanner
Timefold

Operating system

Windows

Our requirements

  • Deep practical expertise with Drools, Business Central, KIE Server / KIE Containers, Complex Event Processing (CEP)
  • Strong Java development background, including Spring / Spring Boot and Hibernate
  • Experience in designing rule-based architectures within distributed systems
  • Strong understanding of software architecture and integration patterns
  • Ability to troubleshoot complex technical issues and drive solutions proactively
  • Excellent collaboration and communication skills
  • Experience working closely with development teams in Agile environments
  • Very good English communication skills

Optional

  • OptaPlanner / Timefold
  • constraint-solving engines
  • Domain-Driven Design (DDD) principles

Your responsibilities

  • Support teams in designing and implementing enterprise-grade solutions based on the Drools ecosystem
  • Analyze existing technical challenges and identify improvements related to performance, scalability, and maintainability
  • Define best practices for rule architecture, coding standards, and rule lifecycle management
  • Collaborate closely with software engineers, architects, and QA teams to ensure high-quality delivery
  • Participate in code reviews, workshops, and technical knowledge-sharing sessions
  • Design robust integrations between Drools components and modern microservices-based architectures
  • Identify technical risks and propose mitigation strategies within complex project environments
  • Contribute hands-on to implementation activities and optimization initiatives
  • Prepare and maintain technical documentation and implementation guidelines

About the project

We are looking for a highly experienced Drools Consultant / Rule Engine Expert to join a strategic 6-month initiative focused on implementing and optimizing rule-based decision systems within a modern enterprise environment.
The project offers flexibility regarding engagement model — we are open to both full-time and part-time cooperation, depending on the consultant’s availability and expertise.
In this role, you will support development teams in building scalable and maintainable Drools-based solutions, helping establish technical standards, improve architecture quality, and accelerate adoption of the rule engine ecosystem across the organization.
Industry: Travel
Initial cooperation planned for 6 months
Possibility of both full-time and part-time engagement
Fully remote work model
Flexible working hours focused on outcomes and delivery quality
Budget: 170-200 net/h
Work environment
  • Agile delivery model (Scrum / Kanban)
  • Fully remote work model with optional hybrid collaboration in Kraków or Gdańsk
  • Flexible working hours focused on outcomes and delivery quality
  • Collaborative engineering culture with experienced technical specialists
  • Modern technology stack and a supportive onboarding process
  • This is how we organize our work

    This is how we work

    at the client's siteyou focus on a single project at a timeyou have influence on the technological solutions appliedyou have influence on the productyou develop the code "from scratch"you focus on product developmentagilescrumkanban

    Team members

    10 people:backend developerarchitect

    This is how we work on a project

    • Clean Code
    • code review
    • DDD
    • architect / technical leader support
    • documentation
    • issue tracking tools
    Company

    Development opportunities we offer

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

    What we offer

    • Opportunity to influence architecture and technical standards in a strategic initiative
    • High-impact role with strong ownership and autonomy
    • International and collaborative project environment
    • Access to modern tools, technologies, and a knowledge-sharing culture

    Benefits

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

    Recruitment stages

    • 1.
      Introductory conversation
    • 2.
      Technical discussion with the project team
    • 3.
      Final client interview

    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.

    This is how we work

    Drools Consultant / Rule Engine Expert
    170–200 zł / hr. (B2B)
    I apply to:
    Cyclad
    Warszawa, Masovian
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