Senior Java Engineer

Job Description

Ciklum is looking for a Senior Java Engineer to join our team full-time in Poland.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About Client

With almost 100 million active users across 25 countries, they’re a global food tech company. Their tech ecosystem connects millions of active customers with hundreds of thousands of connected partners in countries across the globe. Their mission: To empower every food moment around the world, whether it’s through customer service, coding or couriers.

About The Role

As a Senior Java Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Are you a seasoned Software Engineer with a passion for building scalable and robust integration solutions? Do you thrive in complex environments, working with diverse technologies and collaborating with both internal and external partners? If so, we have an exciting opportunity to join our team and play a key role in shaping the future of our logistics capabilities.

As a Senior Software Engineer in our Logistics team, you will be instrumental in enhancing and consolidating our 3rd Party Logistics (3PL) services. You will be involved in the evolution of our current systems, focusing on creating a unified and efficient data flow for all 3PL communications. Your expertise will be crucial in designing, developing, and maintaining critical components that power our delivery operations and partner integrations.

Responsibilities

• Design, develop, and maintain software solutions for our logistics integration platform, ensuring high performance, scalability, and reliability
• Contribute to the potential migration of our Legacy 3PL service from .NET to Java, leveraging your experience in both technology stacks
• Architect and implement robust data pipelines using Kafka or SNS/SQS to establish a unified messaging system for all 3PL interactions
• Design and implement seamless integrations with internal APIs (e.g., Order-API, Restaurant-API, PartnerConnectAPI, Logistics Relay API) and external partner APIs
• Develop and maintain both synchronous HTTP APIs and asynchronous event-driven integrations
• Apply your understanding of event-driven architectures and microservices to build a scalable and maintainable platform (EDA and DDD)
• Bring your understanding of 3PL operations, delivery processes, order status updates, and courier location tracking to the development process
• Contribute to the understanding and utilization of logistics metrics (e.g., Workload, PrePurchaseEta, PostPurchaseETA) for dynamic decision-making
• Ensure the quality and stability of your code through thorough testing and adherence to best practices

Requirements

• Strong experience in software development with a proven track record of building and deploying scalable applications
• Solid understanding and experience with Java
• Deep understanding and practical experience with Kafka, including producers and consumers
• Experience with other messaging systems such as Kafka, SNS, and SQS
• Proven ability to design and implement RESTful APIs and integrate with external APIs
• Experience with event-driven architectures and microservices
• Understanding of database concepts and experience working with various database systems
• Strong problem-solving and analytical skills
• Excellent communication and collaboration skills
• Fluency in English

What`s in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy flexibility – full remote working possibilities
• Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About Us

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

Want to learn more about us? Follow us on Instagram , Facebook , LinkedIn .

Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.