Lead .NET Developer | Software Architecture & AI

Adentis; Lisboa; On-site; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Great work-life balance

Flexible schedule

Health benefits for you and family

Team building

Training & certification

Career progression

Personalized performance reviews

Job summary

Adentis in Lisbon seeks an experienced Lead .NET Developer to drive the technical design and development of scalable software solutions. The ideal candidate combines strong expertise in the .NET ecosystem with architectural know-how and a passion for AI-enhanced development.

You will lead backend design using C#, .NET and ASP.NET Core, promote engineering best practices, mentor teams, and work across REST APIs, distributed systems and event-driven patterns such as CQRS and Event Sourcing.

Qualifications

• Significant professional experience in software development, with leadership exposure.
• Strong backend expertise in C#, .NET, and ASP.NET Core.
• Experience designing RESTful APIs and scalable backend services.
• Good knowledge of relational databases and SQL.
• Familiarity with software engineering practices: SOLID, automated testing, Git and CI/CD.
• Ability to mentor teams and drive architectural decisions.
• Fluent English is mandatory.

Responsibilities

• Lead the design, development and implementation of backend solutions using C# and .NET.
• Define and promote software architecture and engineering best practices.
• Design and develop scalable, distributed and event-driven systems.
• Contribute to architectural patterns like Event Sourcing and CQRS.
• Explore and integrate AI technologies into software solutions and workflows.
• Drive technical decisions, ensure code quality, performance and maintainability.
• Provide technical guidance and mentoring to development teams.
• Participate in code reviews and promote clean code and SOLID principles.

Skills

C#

.NET

ASP.NET Core

REST APIs

SQL

SOLID

CI/CD

Git

Leadership

Fluent English

Tools

Azure

AWS

Job description

With just over 10 years of experience in the Portuguese market, we share our DNA with more than 200 workers and position our offer according to 3 lines of service:

• Strategy (Outsourcing, NeXel, Team as a Service, Tech Academies);
• Nearshore.

In ADENTIS, we focus on PEOPLE. This is our emotional salary:

• Great Work-Life balance;
• Very flexible organizational routine;
• Health benefits (for you and your family);
• Team Building activities;
• Over 300 protocols to offer you great discounts in different areas;
• Continuous professional development sponsored by our Training and Certification Department;
• Regular feedback on your performance through a personalized plan;
• Comprehensive career plan and progression involving assertive performance reviews.

Role Overview:

We are looking for an experienced Lead .NET Developer to drive the technical design and development of scalable software solutions. The ideal candidate combines strong expertise in the .NET ecosystem with solid architectural knowledge, the ability to make technical decisions and an interest in leveraging AI technologies to improve software development.

Key Responsibilities:

• Lead the design, development and implementation of backend solutions using C# and .NET.
• Define and promote software architecture and engineering best practices.
• Design and develop scalable, distributed and event-driven systems.
• Contribute to the implementation of architectural patterns such as Event Sourcing and CQRS.
• Explore and integrate AI technologies into software solutions and development workflows.
• Drive technical decisions, ensuring code quality, performance and maintainability.
• Provide technical guidance and mentoring to development teams.
• Participate in code reviews and promote clean code and SOLID principles.

Tech Stack & Core Requirements:

• Experience: Significant professional experience in software development, ideally in a Lead Developer or Technical Lead position.
• Backend: Strong expertise in C#, .NET and ASP.NET Core.
• Architecture: Good understanding of software architecture, design patterns and distributed systems.
• APIs: Experience designing and developing REST APIs and backend services.
• Databases: Good knowledge of relational databases and SQL.
• Engineering Practices: SOLID principles, automated testing, Git and CI/CD.
• Leadership: Ability to drive technical decisions, mentor developers and take ownership of complex solutions.
• Languages: Fluent English is mandatory.

Nice to Have:

• Hands-on experience with Event Sourcing and CQRS.
• Knowledge of event-driven architectures and messaging systems.
• Experience integrating AI technologies or working with AI-assisted development tools.
• Familiarity with cloud platforms such as Azure or AWS.
• Experience with microservices architectures.

We walk with you!

At Adentis we defend equality and value diversity. We create a safe, diverse environment where opportunities are equal for all employees!

We do not discriminate based on age, ethnicity, sexual orientation, gender, disability or any factor other than merit.

All candidates with skills for the position are welcome!