Full-Stack Engineer (App Team)

Avios Group (AGL) Limited; Greater London; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

Avios Group (AGL) Limited is looking for a Full Stack Engineer to enhance the Avios App. This role involves both mobile and backend development, requiring collaboration with cross-functional teams and an innovative mindset.

The position offers a hybrid working style from the London office, with at least two days in the office, as well as opportunities for remote work based on workload. Join us to help shape the future of the Avios loyalty platform.

Qualifications

• Experience building applications in a commercial engineering environment.
• Strong experience in either React Native or .NET/C# with working knowledge of the other.
• Interest in developing full‑stack capability across mobile and backend systems.
• Understanding of APIs and modern development practices.
• Exposure to cloud platforms – AWS preferred.
• Strong communication and collaboration skills.
• A proactive mindset and willingness to learn and grow.

Responsibilities

• Contribute to the development of features across the Avios App.
• Own end‑to‑end development cycles from implementation to ongoing improvements.
• Partner with engineers, QA, Product Managers, and Designers.
• Participate in code reviews and technical discussions.
• Take on increasing ownership over time.

Skills

Experience building applications in a commercial engineering environment

Strong experience in either React Native or .NET/C#

Interest in developing full-stack capability

Understanding of APIs and modern development practices

Exposure to cloud platforms – AWS preferred

Strong communication and collaboration skills

Proactive mindset and willingness to learn

Job description

About the role

We’re IAG Loyalty – a team focused on the world‑wide Avios loyalty platform, connecting millions of members to travel, retail and financial services. As a Full Stack Engineer you’ll work in a cross‑functional product team to build and improve features in both React Native and .NET/C#.

Responsibilities

• Contribute to the development of features across the Avios App, working closely with mobile and backend teams.
• Own end‑to‑end development cycles – from implementation and testing to deployment and ongoing improvements.
• Partner with engineers, QA, Product Managers and Designers to deliver high‑quality functionality that meets customer and business needs.
• Participate in code reviews, technical discussions and team ceremonies, while learning from more experienced engineers.
• Take on increasing ownership and impact over time across both mobile and backend development.

Qualifications

• Experience building applications in a commercial engineering environment.
• Strong experience in either React Native or .NET/C# with working knowledge of the other.
• Interest in developing full‑stack capability across mobile and backend systems.
• Understanding of APIs and modern development practices.
• Exposure to cloud platforms – AWS preferred.
• Strong communication and collaboration skills.
• A proactive mindset and willingness to learn and grow.

Location & Working Style

Role is based in our London office with a hybrid model, requiring a minimum of two days in the office. Remote work is also available depending on workload.

Diversity & Inclusion

We actively encourage applications from people with diverse backgrounds and experiences, and we are committed to ensuring our recruitment process is fair, inclusive and accessible.