Job description

We are seeking a highly experienced Senior Java Engineer / Architect with 15+ years of experience in designing and building scalable, high-performance systems within the airline/aviation domain. This role requires deep expertise in Java (hands-on experience with Java 17, Java 21, or Java 25 is mandatory), microservices, cloud-native technologies, and strong domain knowledge of airline systems.

You will lead the architecture, design, and development of mission-critical, high-volume, low-latency applications that support core airline operations. The ideal candidate will have proven experience in building distributed systems using modern software engineering practices, leveraging Kubernetes, cloud platforms, CI/CD pipelines, and DevOps methodologies to deliver highly available, secure, and resilient enterprise solutions.

Key Responsibilities

Design, develop, and maintain high-volume, low-latency Java applications for mission-critical airline systems.
Architect and implement microservices-based solutions with a focus on scalability, resilience, and performance.
Work on core airline systems such as:
- Passenger Service Systems (PSS)
- Reservation and ticketing platforms
- Inventory and availability systems
- Departure Control Systems (DCS)
Apply strong object-oriented design principles, design patterns, and best practices.
Design and manage cloud-native applications on AWS and Azure.
Implement and manage containerized applications using Docker and Kubernetes.
Build and maintain Infrastructure as Code (IaC) using CloudFormation and Ansible.
Develop and optimize CI/CD pipelines for continuous integration and delivery.
Ensure system reliability, observability, and performance tuning in production environments.
Write and maintain high-quality, testable code with strong unit and integration test coverage.
Collaborate with cross-functional teams including product, architecture, and operations.
Troubleshoot and resolve complex issues in mission-critical production systems.
Mentor engineers and contribute to architectural governance and technical strategy.

Required Skills & Experience

15+ years of hands-on Java development experience.
Strong expertise in object-oriented design, SOLID principles, and design patterns.
Proven experience building and scaling microservices architectures.
Mandatory airline/aviation domain experience, including:
- Reservation systems
- Ticketing workflows
- Inventory management
- Passenger Service Systems (PSS)
- Departure Control Systems (DCS)
Strong hands-on experience with Kubernetes (mandatory) for container orchestration.
Experience with Docker and containerization best practices.
Proficiency in AWS and/or Azure cloud platforms.
Experience with Infrastructure as Code (IaC) tools (CloudFormation, Ansible).
Strong experience with CI/CD tools and pipelines.
Expertise in building high-performance, scalable, and fault-tolerant systems.
Solid experience with unit testing and integration testing frameworks.

Soft Skills & Mindset

Strong curiosity and focus on understanding the “why” behind solutions.
Passion for collaborative problem-solving and teamwork.
Excellent communication and stakeholder management skills.
Adaptable and able to thrive in a fast-paced, evolving environment.
Strong sense of ownership, accountability, and code quality.
Continuous improvement mindset with a drive for engineering excellence.

Nice to Have

Knowledge of IATA standards (e.g., NDC, ONE Order).
Experience with event-driven architectures (Kafka, messaging systems).
Exposure to DevSecOps practices.
Experience with GDS platforms or global airline systems.
Familiarity with observability tools (Prometheus, Grafana, ELK stack).

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