Senior Full-stack Software Engineer

OAG is a leading data platform for the global travel industry, offering an industry-first single source for supply, demand, and pricing data. The company empowers the travel sector with high-quality, relevant datasets covering the entire journey—from planning to customer experience.

Headquartered in the UK, OAG operates in the USA, Denmark, France, Germany, Singapore, Japan, China, and Lithuania.

Job description:

The Senior Full-stack Software Engineer will be responsible for the end-to-end design and delivery of modern web products, with a strong focus on Single Page Applications (SPAs) built using Angular (preferred), React, or Vue.js on the front end, and robust C#/.NET services on the back end.

This role will set engineering standards, guide architectural decisions, mentor team members, and drive continuous delivery practices to ensure scalable, secure, and high-quality solutions.

Main duties include:

• Leading the design, development, and deployment of SPA front-ends and .NET APIs/services
• Shaping system architecture for scalability, performance, security, and long-term maintainability
• Owning CI/CD pipelines, DevOps practices, and cloud infrastructure automation
• Championing cloud-first solutions (AWS preferred; GCP/Azure acceptable)
• Optimising relational and analytical databases (MS SQL, PostgreSQL, Snowflake)
• Mentoring and supporting engineers, fostering best practices and continuous learning
• Collaborating with Product, UX, and Data teams
• Driving quality through code reviews, automated testing, and monitoring
• Managing technical debt, refactoring, and modernisation initiatives
• Supporting incident response and process improvements

Requirements:

• Expert-level full-stack development skills with C#/.NET (Core & Framework)
• Strong background in SPAs with Angular (preferred), React, or Vue.js using TypeScript
• Experience in database design and query optimisation (MS SQL, PostgreSQL)
• Experience with at least one major cloud provider (AWS preferred; GCP/Azure acceptable)
• Proven experience with CI/CD pipelines, automated testing, and DevOps practices
• Experience mentoring engineers and contributing to technical strategy

Company offers:

• The opportunity to work with passionate professionals at the intersection of technology and travel
• Complimentary lunch provided daily
• A modern office in a convenient location with flexible working arrangements
• Opportunities to travel to other company offices
• An attractive compensation and benefits package (including private health insurance, bonus scheme, and retirement plan)
• A generous annual leave policy, including an additional day off during the employee’s birthday month
• Excellent opportunities for professional growth and development

Monthly Salary:

€5300–7200 gross, depending on experience and competencies