Senior Developer - Software
Confirmed on the employer's own hiring board on Oct 15, 2026. First seen by Alion on Aug 10, 2026. Air Liquide scores B on the Alion truth index.
Hello, candidate! At Air Liquide, we value inclusion and diversity, so we are pleased to inform you that you are participating in an anonymous selection process, meaning that no personal information will be available. Your assessment will be based on your technical skills and, later, in your behavioral interview. Please fill out all fields of your application with as much detail as possible, remembering that this is essential for your assessment in the anonymous selection process.
About Air Liquide
Through the passion and diversity of its people, Air Liquide leverages the energy and environmental transition, healthcare changes and digitalization, and delivers greater value to all its shareholders.
Join us for a stimulating experience: you will find a world of learning and development opportunities where creativity is at the heart of what we do, in an open, collaborative and respectful environment.
How will you CONTRIBUTE and GROW?
You will be partner to the end-to-end software development lifecycle-from defining customer and user requirements and systems analysis to design, build, test, and implementation-for new and existing core foundational web and mobile applications.KEY RESPONSIBILITIES
- Develop, maintain, and support reliable and high-performing web and mobile applications.
- Design, write, and execute comprehensive test cases, and accurately document test results.
- Assist in technical design and functional specifications for business applications, analyzing options, alternatives, and evaluating system functionality and integrity.
- Support the day-to-day maintenance and systems administration of internal websites, including updating document content and performing necessary software development.
- Create, maintain, and manage web pages across both Intranet and Internet sites.
- Utilize structured methodologies and various processes to determine requirements and design formal solutions.
- Prepare or assist in developing project plans, defining project scope, estimating resource projections, and preparing work plans.
- Provide regular status reports and participate in team meetings.
- Recommend and implement appropriate modifications and improvements to existing applications.
- Conduct presentations or provide training on new or updated systems.
- Research and track emerging technical trends and products in software development.
Knowledge, Skills & Abilities
- Proven ability to prioritize tasks effectively and thrive in a dynamic environment to meet deadlines.
- Excellent problem-solving skills.
- Demonstrated ability to interact effectively with all levels of management. Strong collaboration and teamwork skills.
- Exceptional written and verbal communication skills.
- Ability to translate complex business requirements and design concepts into intuitive web designs and applications.
- Ability to clearly explain and discuss complex analysis and programming issues with non-technical stakeholders.
- Strong analytical skills for defining and structuring complex programs.
- Fluency in English (written and spoken) for reporting to countries abroad
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Do you have these requirements?
Education
- Bachelor's Degree in Computer/Information Science or a related field.
Experience
- Ideally, you bring solid professional web development experience using .NET technologies, including ASP.NET MVC, Web Forms, .NET Core, and ASP.NET Core. Hands-on experience with Angular development is highly valued.
- Experience with React / React Native is a welcome asset.
- Strong SQL programming skills, including experience with stored procedure development.
- Experience with CI/CD pipelines, DevOps practices, and tools like Docker, Kubernetes, and Azure DevOps is preferred.
- Hands-on experience with unit testing, dependency injection, and developing maintainable, testable code.
- Mobile development experience is preferred.
Core Technical Understanding:
- In-depth knowledge of web development, from foundational HTML to advanced technologies.
- Thorough understanding of Relational Database Design and integration. Proficiency in Structured Methodology and the Software Development Lifecycle (SDLC).
- Solid grasp of Object-Oriented Development principles. Strong proficiency with Source Code Control ("version control").
- Understanding of browser compatibility issues and web page design principles.
- Familiarity with web server technology, security, and web statistics software.
Your differences drive our performance
At Air Liquide, we are committed to building a diverse and inclusive workplace, which means that, regardless of your gender identity, sexual orientation, color, age, religion, nationality or disability, we value a work environment made up of true stories, built by true people.
Our processes reflect this, being diverse and free from any prejudice, therefore, we do not collect information such as date of birth, gender, marital status or full address in our selection stages. If this information is sent, it will be disregarded.
We strongly believe that a diverse organization opens up opportunities for people to express their talent, both individually and collectively, and helps foster our ability to innovate by living our fundamentals, acting for our success and creating an engaging environment in a changing world.
Here you can be you!!