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Senior Backend Engineer

Sofia, Bulgaria

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 Senior Backend Engineers to join our rapidly growing international company, FLYR, in Sofia. We are expanding our team in Sofia, which supports a large codebase that connects modern-day solutions to the legacy world and develops new services. Our work will provide airlines with a smoother path for transitioning from the legacy world into the modern future.


Adhering to Agile methodologies, our team operates in two-week sprints to ensure efficient project management and delivery. We use C++, Golang, and Python in GCP.


If you are a motivated engineer passionate about contributing to groundbreaking projects and solving difficult problems, we encourage you to apply and become part of our team!

What Your Journey Will Look Like (Responsibilities)

  • Collaborate with architects and engineering leadership to design components for new products that disrupt the retail of airline products.
  • Develop a scalable, well-structured backend for enterprise line-of-business applications using Go and Python, along with technologies like Redis, BigQuery, PostgreSQL, Docker and Kubernetes.
  • Design and implement algorithms to efficiently process, analyze, and serve real-time, low-latency responses to high-volume requests on the backend.
  • Work with Technical Product Owners and UI/UX designers to define engineering roadmap items, provide engineering input for feature definition, and deliver complex application features and end-user workflows.
  • Support the definition of quality standards and engineering processes for building robust and scalable solutions.
  • Estimate upcoming work, communicate technical solutions effectively, and report progress.
  • Work with and visit international teams.

What To Pack For This Trip (Qualifications)

Education and Background

  • Education: Degree and/or advanced domain expertise and successful industry experience in Computer Science, Computer Engineering, Mathematics, or Operations Research.
  • Solid Computer-Science Foundation: Solid computer science foundation encompassing data structures, algorithms, and design patterns. Proven track record in software design and architecture.
  • Communication and soft skills: Good written and oral communication skills in English. Strong communication skills with experience collaborating across multiple teams.

Experience

  • Programming Proficiency: 5+ years of proven software development experience in a popular object-oriented or functional programming language (preferably Go, Python, or C++).
  • SaaS & APIs: 2+ years of hands-on experience building SaaS products and RESTful APIs. Proficient experience with REST API design and implementation.
  • Databases: Familiarity with SQL/NoSQL storage (e.g., PostgreSQL, Redis), understanding their strengths and weaknesses.
  • DevOps & Cloud: Familiarity with DevOps processes (CI/CD, automation, observability) and tools (Cloud Build/Deploy, Terraform, Docker, Kubernetes). Experience with Cloud platforms (GCP/AWS).
  • System Architecture: Experience with low-latency, high-throughput system architectures.
  • Scaling & Optimization: Experience with scaling and optimizing web services (caching, distributed processing, replication, performance profiling/forecasting).
  • Version Control: Solid GIT version control experience in a team environment.

Personal Attributes & Soft Skills

  • Ownership & Drive: Strong sense of ownership and drive.
  • Independence & Pragmatism: Independence, pragmatic approach, and attention to detail.
  • Best Practices: Understanding of development best practices and standards (behavior-driven development, coding standards, etc.).

Optional Carry-On (Preferred Qualifications)

  • Experience with C++ (a significant advantage).
  • Experience with Security best practices and Observability tooling.
  • Experience with optimizing application performance and solving scalability issues.
  • Domain knowledge of the airline industry.
  • Proficiency with GCP and GKE, Kubernetes.

First-Class Amenities

  • Private medical health insurance.
  • Generous PTO policy and flexible working arrangements.
  • A commitment to your career by keeping the conversation central to your growth.
  • Top-quality tech equipment so you can be at your best.

 

Our Commitment to Equality

Here at FLYR, we’re committed to growing with intention, having our teams better reflect the world around us. We strive to create an environment of inclusion and even more importantly, belonging, where psychological safety, empathy, and human connection are at the center of our leadership principles. Not only does this enable us to create better products and have a better work environment, it’s good for the bottom line and it’s the right thing to do.
 
FLYR provides equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, gender identity, sex, sexual orientation, national origin, age, physical or mental disability, genetics, marital or veteran status. In addition to federal law requirements, FLYR complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company operates.
 

Privacy Policy

All applicants, including those based in California or the EU, are encouraged to review our Privacy and Cookie Policy.
 
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We take your privacy seriously and are committed to protecting your personal data in accordance with the General Data Protection Regulation (GDPR).

By submitting your application, you consent to FLYR using your personal data for recruiting and/or hiring purposes. Your data may be shared with relevant parties within FLYR to facilitate the recruitment process.

We will retain your personal data for a period of 3 years from the date you are no longer an active applicant. After this period, your data will be securely deleted, unless explicit permission is granted by you for us to retain it for a longer period.

You have the right to request access to, correction, erasure, or restriction of your personal data at any time. You may also withdraw your consent for us to process your data by contacting us at recruiting@flyr.com. However, please note that withdrawing your consent may affect our ability to consider you for future employment opportunities.

If you have any questions or concerns about our use of your personal data, please contact us at recruiting@flyr.com.