Senior .NET Backend Developer

Navtech, Inc.; Cardiff, Gloucester; Hybrid; GBP 50,000 - 75,000; Full time

Job summary

A leading services company owned by Airbus, Navtech, Inc. is seeking a seasoned Software Developer to join their dynamic team in Cardiff. This role involves designing, implementing, and optimizing SaaS applications in a microservices environment. The position offers a hybrid work environment and an opportunity to work on cutting-edge aviation technologies, making a significant impact on flight operations efficiency for clients worldwide.

Benefits

Hybrid work environment with up to 2 days working from home weekly

Stable employment based on full-time job contract

Private medical coverage for you and your family

Life insurance for you and your family

Access to the latest knowledge and technologies

Flexible working hours

Qualifications

• 6+ years of professional experience in software development.
• Recent experience with .NET, C#, AWS, and testing methodologies.
• Strong capability in identifying technical challenges and proposing solutions.

Responsibilities

• Develop new and maintain existing .NET (C#) code in AWS cloud.
• Contribute to software architecture discussions and lead design.
• Mentor junior engineers and improve development processes.

Skills

.NET

C#

AWS

Python

DevOps

Entity Framework

Education

Master of Science Degree in software engineering or related field

Job description

Aviation. It connects our world, brings people together, provides opportunities, accelerates economic growth, and is just so very cool!

Come work for NAVBLUE, a leading services company owned by Airbus, dedicated to Flight Operations, Air Traffic Management solutions and services for airlines, airports, and Air Navigation Service Providers (ANSPs). We combine aircraft manufacturer expertise, flight operations know-how, and agile development to enhance operational efficiency, optimize resources, and increase productivity for a safe and sustainable aviation future. Our global teams deliver a reliable, optimum, and customized user experience to more than 500 customers worldwide.

We are looking for a seasoned Software Developer with experience in designing, implementing, and optimizing SaaS applications in a microservices-based environment. As a member of our team, you will contribute to all aspects of the software development lifecycle, including estimation, design, coding, test automation, code reviews, deployment, and support. Teams are responsible for specific services or products. Our solutions help airlines manage safe and high-performance flight operations.

Responsibilities:

• Develop new and maintain existing .NET (C#) code in an AWS cloud environment
• Focus on quality by promoting coding best practices, a test-first mindset and highest security standards
• Contribute to building new and improving existing development processes
• Work within a small agile teams delivering new features and fixing defects
• Lead technical designs, taking a holistic view of the product, and collaborate with multiple stakeholders to define the best approach to address upcoming challenges and deliverables
• Define and drive the team's technical direction, mentor junior engineers, and proactively identify, propose, and implement new processes or architectural improvements to enhance team efficiency, code quality, and timely delivery
• Contribute to software architecture discussions, translate system-level designs and architectural blueprints into robust, maintainable, and high-quality code, applying the latest best practices in software engineering.

Required Skills/Experience:

• 6+ years of professional experience in software development
• Recent experience developing software with .NET or .NET Framework, C#, and AWS (or other cloud service providers)
• Experience writing unit tests, component testing, integration testing, covering both functional and non-functional aspects
• Hands-on experience with Python in testing area
• Applying best practices to keep code maintainable
• Hands on experience with ASP.NET Web API
• Experience working with databases and good understanding of Entity Framework
• Solid understanding of DevOps practices, including CI/CD pipelines (e.g., GitHub Actions, GitLab CI, Jenkins), containerization with Docker, and monitoring/logging tools
• Demonstrated experience in leading software development teams, fostering a collaborative and high-performance culture, and effectively representing the team's technical vision and needs to stakeholders, including architects and senior management
• Strong capability in identifying technical challenges and bottlenecks, constructively proposing and implementing effective solutions (either individually or by guiding the team), while actively building team engagement, fostering a positive atmosphere, and championing team spirit
• Ability to take backend projects from initial requirements to production deployment
• Master of Science Degree in software engineering or a related field
• Proficiency in English spoken and written

Nice-to-Haves:

• Hybrid work environment with up to 2 days working from home weekly
• Hands-on experience with RESTful/SOAP API design, development, optimization, testing, and security
• Deep expertise in implementation of automated functional tests using Python
• Broad and in-depth understanding of software testing concepts and methodologies, including unit testing, component testing, and integration testing (covering functional and non-functional aspects). Demonstrable knowledge of ISTQB best practices. ISTQB certification is a strong asset
• Experience with WPF (Windows Presentation Foundation)
• Understanding of ASP .NET MVC and ASP .NET Web pages
• Understanding of airline operations, flight planning, or air navigation principles
• Passion for the aviation industry

We offer:

• Hybrid work environment with up to 2 days working from home weekly
• Stable employment based on a full-time job contract
• International working environment in a dynamic company
• Access to the latest knowledge and technologies enabling professional development
• Training and development possibilities
• Participating in international projects and international trips
• Competitive salary dependent on experience and qualifications
• Flexible working hours and work-from-home opportunities
• Private medical coverage for you and your family
• Sport card
• Life insurance for you and your family
• Co-funding for meals
• Employee stock ownership plan

Selection and Hiring Commitment

We thank all applicants for applying. Only selected applicants will be contacted.

Navblue is committed to creating an environment and a culture where everyone feels like they belong no matter who they are or where they are from. We are committed to providing equal employment opportunities to all individuals based on job-related qualifications and ability to perform a job. We do not discriminate against any employee or applicant for employment because of race, colour, sex, age, national or ethnic origin, religion, sexual orientation, gender identity or expression, marital status, family status, genetic characteristics, record of offences, and basis of disability or any protected class. Accommodations will be available on request for candidates throughout the entire recruitment and selection process.

NAVBLUE is operating within the Airbus Helicopters Polska Structure .

About Us:

NAVBLUE, an Airbus Company, is a leading global provider of flight operations solutions, including aeronautical charts, navigation data solutions, flight planning, aircraft performance software (take-off/landing, weight and balance), and crew planning solutions.You’ll be able to shape the future of the digital aviation industry by working on several of the best in the industry flagship products enabling pilots, dispatchers, flight engineers and other aviation personnel on a daily basis to deliver safe, efficient, and reliable flight operations all over the world. You’ll have the opportunity to support millions of flights each year and help NAVBLUE customers maximize efficiency, reduce costs, ensure compliance with complex national and international safety regulations, and effectively deliver their services.

You’ll join a team with a focus on digital and collaborative innovation that is passionate and customer-focused. Over the last few years, Airbus has been supportive of various initiatives such as Going Digital, Performance Based Navigation Services, Air Traffic Management Modernization Programs, FlySmart on iOS and other digital projects related to new aircraft technologies; the launch of NAVBLUE was therefore a natural step to further develop its Flight Operations and Air Traffic Management Portfolio.

NAVBLUE is a fully owned subsidiary of Services by Airbus, fueled by the agility of Airbus ProSky and Navtech (acquired in 2016), and the pioneering spirit of Airbus, NAVBLUE was created in July 2016 with one mission: lead aviation into the digital age.

Airbus and all subsidiaries, including NAVBLUE are proud to have been recognized as a Global Top Employer for 2025 . Based on eight criteria: physical workplace, work atmosphere and social, health financial and family benefits, vacation and time off, employee communication, performance manager, training and skills development and community involvement. It was determined that we offer some of the most progressive and forward-thinking programs within the area. This achievement reflects our commitment to nurturing and empowering our people to reach their full potential. We’re grateful to our people, whose dedication and collaboration make this possible.

NAVBLUE is based in Hersham (UK), Cardiff (UK), Toulouse (France), Waterloo, ON (Canada), Bangkok (Thailand) and Gda ń sk (Poland) with other offices all around the world.