Software Engineer

About Indra Group UK & Ireland

Indra is a leading global technology and consulting company, and a trusted technological partner for the core business operations of its clients worldwide. It stands at the forefront of key sectors including Transport, Defence, Air Traffic Management and Space, alongside advanced Information Technology services delivered through Minsait, and cutting-edge capabilities in Sovereign AI, Cybersecurity, and Cyberdefence via IndraMind.

The company’s business model is built around a comprehensive portfolio of proprietary products, combining strong innovation with a high-value focus for customers.

With more than 2,500 projects implemented across 50 countries and over 100 cities, Indra is a global benchmark in innovative transportation and mobility solutions. It is recognised as one of the world’s top three companies in public transportation management systems. Indra’s technology supports the daily journeys of over 78 million people, helping to reduce more than 10 million tonnes of CO₂ emissions annually, and helping save nearly 3,000 lives through improved traffic management and road safety.

Indra Group is paving the way to a more secure and better-connected future through innovative solutions, trusted relationships and the very best talent. Sustainability sits at the heart of its strategy and culture, driving efforts to address current and future social and environmental challenges.

In the 2024 financial year, Indra achieved revenues of €5.5 billion, over 60,000 professionals, maintained a local presence in 46 countries, and operated across more than 140 countries worldwide.

As the technological partner for its customers’ key operations, Indra is at the core of their business, and Indra’s four values guide everything we do:

Innovation - Our capacity for innovation, cutting-edge solutions, and specialised team of professionals enables us to drive a safer, more connected future through technology.

Trust - We work with strength, commitment, and reliability, delivering quality solutions to build trust with customers, employees, partners, investors, and society.

Connection - We harness the power of collaboration, connect ideas and solutions, and adapt to our customers’ needs, supporting them on the path to a better future.

Foresight - We anticipate future needs to make the world safer and more connected, transforming our experience and knowledge into solutions for a better tomorrow.

About the Project

Transport for London (TfL) has awarded Indra a long-term contract to operate, develop, enhance and expand ticketing and access control systems across London’s transport network through to 2034, with extension options to 2039.

This programme covers the maintenance, operation and evolution of a large-scale, complex ecosystem, including turnstiles, validators, ticket machines, sales terminals, back-office systems, payment gateways, IT infrastructure and cybersecurity that supports over 8.6 million daily journeys.

Therefore, Indra will become TfL’s strategic technology partner to guarantee the operation and evolution of the world’s largest and most sophisticated ticketing system. Following a transition period of approximately two years, Indra will serve as the sole provider across the network that includes more than 8,500 buses, nearly 400 Underground stations, around 300 rail stations (Overground, DLR, Elizabeth Line and suburban services), 4,000 Oyster Card outlets, seven customer service centres, and 24 river boat boarding points.

Drawing on over 30 years of experience in urban public transport solutions, Indra will manage and evolve all aspects of the system. The project also envisages, in partnership with TfL, the implementation of new technologies to develop the system, make it more efficient and automate key processes; in short, to jointly create the next generation of the ticketing system for London.

Role overview

The Software Engineer is responsible for supporting the development, integration and maintenance of software running on Front Office devices. The role focuses on analysing embedded software behaviour, troubleshooting device-level applications and ensuring reliable communication between hardware and software components. Working closely with hardware, systems and operational teams, the engineer helps ensure the stable and efficient operation of production environments.

Key responsibilities

• Develop, maintain and troubleshoot C/C++ applications for Front Office devices and embedded platforms.
• Analyse software behaviour and investigate issues affecting device performance, functionality and service availability.
• Support the integration of hardware devices and peripherals, including POS terminals, NFC devices, receipt printers, Bluetooth devices and other field equipment.
• Design, implement and maintain software interfaces using communication technologies such as REST APIs, MQTT and WebSockets.
• Collaborate with hardware and systems engineering teams to validate hardware-software interactions and device integration.
• Participate in software testing activities, including unit testing, integration testing and defect resolution.
• Contribute to software version control, build management and deployment processes using modern development practices.
• Support production environments by investigating incidents, implementing fixes and contributing to continuous improvement initiatives.

Requirements

Essential

• Minimum 2 years of experience in software development using C/C++.
• Experience working with hardware-connected applications and embedded or device-level software.
• Strong knowledge of modern C++ development, including C++11 and C++14 standards.
• Experience integrating and supporting hardware devices such as POS terminals, NFC readers, receipt printers and Bluetooth peripherals.
• Knowledge of REST APIs, MQTT and WebSocket communications.
• Experience using Git or similar version control systems.
• Experience working with Embedded Linux and/or Windows-based systems.
• Familiarity with CMake and modern software build processes.
• Strong analytical and troubleshooting skills.

Desirable

• Experience within Fare Collection Systems, transport or ticketing environments.
• Knowledge of Jira and Agile development methodologies.
• Experience with CI/CD tools and practices, including Jenkins, Docker and Kubernetes.
• Experience with unit and integration testing frameworks such as Google Test and Mockito.
• Knowledge of software design patterns and Clean Code principles.
• Experience developing applications in Windows environments using Visual Studio or Visual Studio Code.
• Experience supporting software deployments in production environments.

Benefits

• Holidays: 25 days per annum + 8 days bank holidays (options to buy/sell days).
• Pension – 4% employee and 4% employer.
• Private medical insurance (including dental & optical).
• Life assurance.
• Income protection.
• Employee assistance programs.
• Flexible/remote working options.
• Charitable initiatives.
• Social events (formal & informal).
• Learning and development programs.
• Innovative & collaborative work environment.

Indra is an equal employment opportunity employer. Applicants are considered without regard to race, colour, religion, sex, sexual orientation, gender identity, origin, disability or other characteristics protected by law.