Principal Software Engineer - Back End / Full Stack

  • Full-time
  • Contract Type: Permanent
  • Directorate: IAG Tech

Company Description

About IAG Tech

IAG Tech is a community of IT and digital professionals from across the International Airlines Group (IAG). We drive the technology behind some of the biggest and most successful brands in global aviation, including British Airways, Aer Lingus, and Iberia.

Brought together in 2019, we are a unique community with a shared vision to deliver Technology Excellence and be recognised as industry leaders in the use of technology.

Our mission is to delight customers, enable employees, accelerate business performance, protect our business and increase shareholder value, through the innovative and agile use of technology and data.

We use product-centric delivery teams using agile methods to implement new capabilities at pace and maximise business outcomes. With a relentless focus on improving system performance and stability, we continually strive to find new and better ways to innovate and support the Group.

Our Values

At IAG Tech we share common values to help us create the right culture to underpin our thriving community:

Innovation | we value identifying new ways of using technology to solve business challenges

Empowerment | we value giving people the freedom to operate, that they take accountability, and collaborate with colleagues

Professionalism | we value having and developing the right knowledge and competency to be able to do our jobs to the best of our ability

Transparency | we value honesty and integrity and always share the reality in a manner the business understands

Agility | we value responsiveness, speed and flexibility in everything we do

We celebrate when we see great examples of our values in action and challenge each other when we see these values being ignored.

Job Description

As a Principal Software Engineer, you will be working with our Product teams in one or more of our domains within the BA Tech Delivery Team to bring agile change to life. We are doing this by role modelling and embedding agile ways of working and applying SAFe as an overarching umbrella within BA Delivery.

Purpose of the role

  • Lead the creation of technical roadmap and support the execution for their product channels, in collaboration with Architecture, Products, Data, Cyber Security. They will engage with Delivery, Ops, Infrastructure regularly and be responsible for identifying opportunities for continuous improvement.


Working in partnership with BA Delivery and the wider IAG/BA business to:

  • Lead software design to ensure that the overall system will behave according to its requirements in large & complex components.
  • Analyse, design and implement software mechanisms to improve code stability, performance, and reusability. Lead and actively participate in code review sessions.
  • Consider and evaluate potential package “off the shelf” solutions in association with BA Delivery Architecture to achieve the defined requirements (including piloting, prototyping and assessing cost of potential solutions).
  • Drive consistency and class leading standards across the delivery function, while championing innovation and software engineers’ technical development.
  • Clearly document appropriate information, so others can understand the software and the system. 
  • Continuously improve systems, solutions and business processes through working with process owners and other subject matter experts to gain a great understanding of business ways of working and challenges. 
  • Provide support on systems/solutions, building, testing and implementing fault fixes and monitoring the system to prevent problems occurring (e.g. DevSecOps environment). 

This role may require travel and working from multiple sites/locations. Willing and able to travel to participate in meetings, workshops, and other related activities.


Essential Qualifications

  • Educated to degree level or equivalent experience

Desired qualification

  • Specific technical experience and qualifications required


  • Proficiency in technical design and building back-end applications using Java/JavaScript/Python.
  • Effective stakeholder management, balancing and finding compromises between opposing views and opinions
  • Ability to recognise priorities and guide others towards the accomplishment of strategic business goals and objectives
  • Dynamic, problem-solving approach coupled with the ability to create a positive working environment.
  • Innovation - transforming industry trends into practical, cost effective solutions  
  • Identifies and contributes to the continual improvement of software engineering capability across the organization
  • Fluent written and spoken English


  • Expertise in the technical design, build, test and support of large and/or complex IT solutions. 
  • Translating complex business requirements into system design, taking into account technical environment(s), ability of user group to interact with the system and expected life and volatility of system. 
  • Proficiency with cross platform development, gRPC, tRPC
  • Developing in an agile and/or DevSecOps environment, including continuous testing, code analysis, logging & monitoring, and continuous integration/continuous deployment.
  • Proven experience working in a resilient and scalable microservices environment and with AWS Serverless stack is highly desirable.
  • Working in digital product and Product teams, exposure to and involvement in SAFe Agile a distinct advantage.

Additional Information


The chance to enjoy a challenging career in an exciting, fast-moving environment in a dynamic industry, working in a multi-cultural environment with great offices in many locations. We aim to provide all our people with a work/life balance, as well as the many benefits offered by a global organisation, including health insurance, pension, and performance bonuses

Diversity and Inclusion

IAG Tech is part of the IAG GBS organisation, and our people are at the heart of everything we do. We recognise that we can only deliver the required business outcomes if we have a thriving community of technology professionals. Together we strive to become the very best at what we do.

We focus on making Tech a great place to work, with a community that we feel proud to belong to. To help make this a reality, our people strategy focuses on six key domains: Engagement, Talent Management, Reward and Recognition, Performance Management, Learning and Development and Culture.

We understand the importance of Diversity and Inclusion in the workplace to deliver this strategy – everyone should feel part of our team. We want to foster an inclusive workplace, celebrate individuality and embrace differences so that everyone in IAG Tech can achieve their goals and ambitions, regardless of their personal circumstances or background.

As a Group, IAG has an ambition that 40% of senior management roles are held by women by 2025. IAG Tech fully supports that ambition, and we are working to help make it a reality. With this in mind, we have set ourselves the challenging target of recruiting 50% female colleagues by 2030.

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