Senior/Staff Software Engineer – Backend (Java/Golang)
FLYRKraków, PolandPosted 26 March 2026
Tech Stack
Job Description
Our Vision
We believe in a world where travel companies can innovate freely, growing and accelerating their business, while delivering the experience travelers want and the change the industry needs.
FLYR is a technology company that unlocks freedom to innovate for the travel industry – eliminating legacy constraints to enable real-time decision making and create the experiences travelers seek. With FLYR, businesses are able to
quickly unlock modern retailing capabilities, improve revenue performance and modernize the e-commerce experience.
Flight Itinerary (About The Role)
We are looking for a Senior or Staff Software Engineer – Backend (Java or Golang) to join the Order Management team, where you will play a key role in designing, developing, and maintaining our product. You will work closely with cross-functional teams to ensure seamless integration and performance optimization. This role requires a deep understanding of Java or Golang. You will be instrumental in driving innovation and ensuring the reliability and scalability of our systems. We strive to deliver high-quality, scalable, and secure solutions that meet the evolving needs of our customers and support the growth of our business. As an Engineering team, we strongly believe in fostering an environment for intellectually engaging work that advances your career progression on this journey. Let’s get you on board soon!
What Your Journey Will Look Like (Responsibilities)
Design, develop, and maintain new product features for the Order Management System using Java (e.g. order create, order change, cancellation, payment service, etc.)
Design and optimise database structures, write efficient queries, and manage data integrity using Postgres/Google Spanner
Design, develop, and maintain new product features for the Order Management System using Golang (mid/long term, if not yet experienced with it)
Collaborate with other teams to gather requirements and define service specifications for the Order Management System
Ensure high availability, reliability, and performance of the system through effective design and implementation practices
Implement monitoring, logging, and analytics solutions to track service usage, performance metrics, and service health
Collaborate with DevOps teams to automate deployment processes, set up CI/CD pipelines, and manage infrastructure as code
Stay updated on emerging trends, best practices, and technologies in microservices architecture, and cloud-native development
Provide technical expertise and leadership in product design, development, and delivery
Provide troubleshooting and support for production issues
Maintain comprehensive documentation for the developed systems
Make accurate estimates for upcoming work, communicate technical solutions effectively, and share knowledge
Work in a product-focused scrum team to deliver against a roadmap driven by a dedicated product owner
Maintain a team of 3-5 developers from a technical perspective (Staff)
What To Pack For This Trip (Qualifications)
Bachelor's degree in Computer Science, Engineering, or related field
7+ years of experience as a Backend Developer (including Java or Golang)
Proficiency in Database and SQL knowledge, including the ability to write and optimise queries for performance
Solid understanding of RESTful API design principles and microservices architecture
Engineering experience running high-load and high-uptime services in production
Familiarity with containerisation and orchestration tools such as Docker, Kubernetes, and cloud-native technologies
Excellent problem-solving skills, attention to detail, and ability to work effectively in a fast-paced, collaborative environment
Strong communication skills with the ability to articulate technical concepts and collaborate with cross-functional teams
Ability to grow the engineering-excellence culture, and influence larger engineering organisations and mentor other Engineers
Knowledge of current trends ... (truncated, view full listing at source)
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