ALTEN

C# Developer

ALTEN  β€’  Porto, PT (Onsite)  β€’  19 days ago
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Job Description

General information

Reference

2026-3464

Publication date

15/09/2026

Position description

Category

Information Technnology - Application Developer

Job title

C# Developer

Contract type

CDI

Job description

ABOUT THE COMPANY:

ALTEN is a multinational group created more than 30 years ago, specialized in consulting services, information technology and engineering services to the main companies in the market. We achieved a turnover of more than 4.14 billion euros in 2024 and now have 57,700 employees, 88% of whom are consulting engineers.

ABOUT PORTO & POSITION:

To support our European intensive growth, the Group has decided to build a Center based in Porto with the aim to provide administrative and financial support to the European subsidiaries.

In this context, we are looking for a skilled C#/.NET Developer to join the Integration teams (aka "middleware") within the ALTEN Group Information Systems & Technology (IS&T) department.

The Integration team is responsible for designing, building, and supporting all ALTEN Group application-to-application digital data flows. Because end-to-end business processes span multiple applications, connecting applications together is essential to delivering a seamless digital experience for end users while ensuring reliability and performance for the company.

The ideal candidate must have significant experience and strong skills in C# and .NET development, preferably in a Microsoft Azure cloud environment.

KEY RESPONSIBILITIES:

Integration & C#/.NET Development:

  • Build and maintain end-to-end application-to-application digital flows using Azure Integration Services (Logic Apps, Data Factory, Service Bus, API Management, Azure Functions);
  • Develop and maintain complex integration logic using C# and .NET technologies, particularly when solutions exceed low-code/no-code capabilities;
  • Build scalable and reliable solutions leveraging Azure Functions and Azure App Services;
  • Enhance traditional software solutions with AI-powered capabilities whenever relevant and valuable,
  • Documentation:
  • Write technical specifications and architecture documentation;
  • Ensure all developments and integrations are properly documented according to best practices;
  • Continuous Improvement:
  • Propose technical enhancements and development best practices;
  • Promote the controlled and relevant adoption of AI-assisted development tools and methodologies;
  • Perform quality control on deliverables, including code reviews and technical documentation;
  • Support & Resolution:
  • Assist in User Acceptance Testing (UAT), bug resolution, and enhancement implementation with appropriate cutover plans;
  • Support production environments and contribute to the continuous improvement of existing integrations and applications;
  • This description considers the main responsibilities; it is not exhaustive.

Minimum/Essential Skills/Qualifications

PROFILE:

  • Bachelor's degree in Computer Science, Engineering, or a related field;
  • At least 3 years of experience in C# and .NET development;
  • Professional level of English;
  • Strong proficiency in C# and .NET development;
  • Experience with Visual Studio;
  • Familiarity with Git and CI/CD pipelines;
  • Strong interest in learning and mastering Azure Integration Services (Logic Apps, Data Factory, API Management, Service Bus, Azure Functions, etc.);
  • Initial experience with Azure development environments such as Azure App Services or Azure DevOps is a plus;
  • Initial experience with AI-assisted software development tools (GitHub Copilot or similar) is appreciated;
  • Ability to understand and define stakeholder needs;
  • Excellent communication skills;
  • Highly motivated, analytical, and adaptable in an international environment;
  • Passion for digital transformation and emerging technologies.
  • PERKS:
  • Meal allowance;
  • Health insurance;
  • Transportation allowance;
  • Extra holiday days;
  • Professional development and growth opportunities.
  • #jobopportunity
  • #sharedservicecenter

At ALTEN Group, a strong culture of respect, ethics, and compliance exists since the company was founded. Here you will find principles of diversity and professional equality at the heart of the Group's HR policy. ALTEN Group is also recognized, certified, and labelled for its responsible practices in controlling environmental impact, as well as ensuring the safety and well-being of its employees.

Are you the one we are looking for?

If yes, apply now or send me your best CV and I'll be glad to meet you!

Industry

Information technology

Tag LinkedIn

#LI-LC2

Position location

Job location

Europe, Portugal, Porto

ALTEN

About ALTEN

𝐀 𝐰𝐨𝐫π₯𝐝 π₯𝐞𝐚𝐝𝐞𝐫 𝐒𝐧 π„π§π π’π§πžπžπ«π’π§π  𝐚𝐧𝐝 πˆπ“ π’πžπ«π―π’πœπžπ¬

ALTEN is committed to meeting the expectations of its stakeholders and anticipating their requirements in the fields of innovation, R&D, and technological information systems.

Founded in 1988 and present in 30+ countries, the Group has established itself as the global leader in Engineering and IT Services. ALTEN operates with major players in the Aeronautics, Space, Defence, Naval & Security, Automotive, Rail & Mobility, Energy & Environment, Life Sciences – Health, Industrial Equipment & Electronics, Telecoms, Banking, Finance & Insurance, Retail & Services, Public Services & Government sectors.Β Β Β 

OUR VISION: BUILDING TOMORROW’S WORLD TODAY

We are convinced that engineers are the architects who build tomorrow’s world today. As a global leader in Engineering and IT Services, we support businesses in their technological and sustainable transformation. We commit to making a positive impact over time and on people, pushing the boundaries of innovation, and always staying one step ahead. We are driven by one ambition: to think about the future in the present.

A LEADING GLOBAL TECHNOLOGY PARTNER

ALTEN is involved in all projects with a technological dimension for the Technical, Research & Development Divisions and IT Systems Divisions of major corporate, telecoms and service clients, requiring the involvement of high-level Consultant-Engineers. To achieve this, the Group has put in place a world-renowned technical organization of excellence.

πŸ”Ή 12 Industries covered

πŸ”Ή 21 Delivery Centers

πŸ”Ή 6,500+ Clients

FULL COVERAGE OF TECHNOLOGIES

The Group covers a wide range of expertise in Engineering and IT Services in order to meet our clients’ needs.

We bring together and coordinate at the transnational level, specialists and consultants, experts in their profession who support our clients in their issues of digital transformation, innovation, product development, supply chain, etc.

Industry
Architecture & Engineering
Company Size
10,000+ employees
Headquarters
Boulogne-Billancourt Cedex, FR
Year Founded
Unknown
Website
alten.com
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