Lead Software Developer(C# or Java)

Overview WELCOME TO SITA We're the team that keeps airports moving, airlines flying smoothly, and borders open. Our tech and communication innovations are the secret behind the success of the world’s air travel industry. You'll find us at 95% of international hubs. We partner closely with over 2,500 transportation and government clients, each with their own unique needs and challenges. Our goal is to find fresh solutions and cutting-edge tech to make their operations run like clockwork. Want to be a part of something big? Are you ready to love your job? The adventure begins right here, with you, at SITA. ABOUT THE ROLE & TEAM We are looking for an experienced and hands-on Lead Software Developer to design, develop, and deliver scalable, cloud-native enterprise applications. The successful candidate will provide technical leadership, mentor engineering teams, contribute to architectural decisions, and drive software delivery using modern development practices. The role requires deep expertise in the Java ecosystem and / or Microsoft .NET ecosystem, combined with experience in cloud/on-prem technologies, microservices, event-driven architectures, APIs, DevOps, and Agile delivery. WHAT YOU’LL DO Software Design & Development Design, develop, and maintain scalable enterprise applications and backend services using Either or Both: .NET: C#, ASP.NET Core, Web APIs; Java: Java, Spring Boot, Spring Cloud, REST APIs. Build secure, high-performance RESTful APIs that are reliable, maintainable, and scalable. Works with portfolio architect for driving high-level architectural discussions and alignment of technical guiderails. Develop solutions using microservices, domain-driven design, and event-driven architectures. Integrate enterprise systems and third-party services through API-led connectivity patterns. Support end-to-end feature delivery across UI, API, middleware, and database layers. Technical Leadership Lead development teams through technical guidance, architecture reviews, and engineering best practices. Conduct code reviews and ensures adherence to coding standards, security policies, and quality requirements. Mentor and coach engineers build technical excellence across the team. Drive adoption of reusable frameworks, patterns, and modern development methodologies. Cloud & DevOps Work with Infrastructure team for design reviews and best practices Design and deploy applications on cloud platforms using Azure services. Develop and maintain CI/CD pipelines to automate build, testing, and deployment processes. Manage containerized workloads using Docker and Kubernetes. Implement Infrastructure as Code and DevOps best practices. Integration & Event-Driven Solutions Design and implement asynchronous and event-driven solutions using messaging technologies. Enable real-time and near real-time communication between distributed services. Contribute to service reliability, resiliency, observability, and monitoring. Security & Performance Creates and manages security documents (Threat Model) and collaborates with Security experts Implement secure authentication and authorization mechanisms (OAuth2, OpenID Connect, Azure AD). Ensure compliance with enterprise security standards and secure coding practices. Optimize application performance through caching, asynchronous processing, and database tuning. Design systems for high availability, scalability, fault tolerance, and disaster recovery. Collaboration & Delivery Work closely with Product Owners, Architects, Engineering Managers, and relevant stakeholders to deliver business value. Participate in Agile ceremonies including sprint planning, reviews, and retrospectives. Investigate and resolve complex production issues related to distributed systems, APIs, and integrations. Contribute to continuous improvement initiatives across engineering teams Qualifications ABOUT YOUR SKILLS .NET Stream C#, .NET 8/10, ASP.NET Core Web APIs, Entity Framework Angular, WPF, Xamarin/.NET MAUI (preferred) Java Stream Java 17+, Spring Boot, Spring Cloud Hibernate/JPA Angular, React or modern front-end frameworks (preferred) Messaging & Integration Azure Service Bus, Kafka, RabbitMQ or equivalent messaging platforms. Enterprise integration and API management. NICE TO HAVE AKS (eg. Azure Kubernetes Service) NGINX Geospatial technologies (eg. GeoJSON, H3, Geofencing) Observability tools (App Insights, Grafana, ELK, Prometheus) AI-assisted development tools and developer productivity platforms EXPERIENCE & QUALIFICATIONS Bachelor’s or Master’s degree in computer science, Engineering, or related discipline. Minimum 8+ years of software development experience. At least 2+ years in a technical leadership or lead developer role. Proven experience delivering enterprise-scale applications using either .NET or Java technologies. Strong experience with cloud-native architectures and DevOps practices. Experience working in global Agile development teams. Excellent communication, stakeholder management, and problem-solving skills. WHAT WE OFFER We’re all about diversity. We operate in 200 countries and speak 60 different languages and cultures. We’re really proud of our inclusive environment. Our offices are comfortable and fun places to work, and we make sure you get to work from home too. Find out what it's like to join our team and take a step closer to your best life ever. 🏡 Flex Week: Work from home up to 2 days/week (depending on your team’s needs) ⏰ Flex Day: Make your workday suit your life and plans. 🌎 Flex Location: Take up to 30 days a year to work from any location in the world. 🌿 Employee Wellbeing: We’ve got you covered with our Employee Assistance Program (EAP), for you and your dependents 24/7, 365 days/year. We also offer Champion Health – a personalized platform that supports a range of wellbeing needs. 🚀 Professional Development: Level up your skills with our training platforms, including LinkedIn Learning! 🙌🏽 Competitive Benefits: Competitive benefits that make sense with both your local market and employment status. SITA is an Equal Opportunity Employer. We value a diverse workforce. In support of our Employment Equity Program, we encourage women, aboriginal people, members of visible minorities, and/or persons with disabilities to apply and self-identify in the application process.