Senior .NET Developer

ITDS; Porto; Hybrid; EUR 55,000 - 75,000; Full time

Job summary

ITDS in Porto is seeking a Senior .NET Developer to design, upgrade and optimize enterprise applications, with a strong focus on C#, .NET, and SQL.

You will work hybrid with agile teams, build RESTful APIs, apply SOLID principles, and contribute to automated testing and code reviews.

Qualifications

• 6+ years of professional software development experience focusing on C# and .NET technologies.
• Proven SQL expertise, including database architecture and complex query optimization.
• Hands-on experience developing and consuming RESTful APIs.
• Strong understanding of SOLID principles and design patterns.
• Experience working in agile environments.
• Fluent in English; Portuguese language skills are a plus.

Responsibilities

• Design and develop high-quality, scalable .NET applications following best practices and architectural standards.
• Enhance and upgrade existing applications to ensure optimal performance, security, and maintainability.
• Develop and optimize complex SQL queries, stored procedures, and views for efficient data processing.
• Establish and maintain automated testing frameworks to ensure code quality and reliability.
• Collaborate with cross-functional teams using agile methodologies to deliver innovative solutions.
• Integrate RESTful APIs to enable seamless data and service communication.
• Apply SOLID principles and design patterns to create flexible and maintainable code.
• Participate in code reviews, knowledge sharing, and continuous improvement initiatives.

Skills

C#

.NET

SQL

RESTful APIs

SOLID design

Agile

English

Portuguese

Tools

Automated testing tools

SQL Server

Job description

Unleash innovation — architect tomorrow’s enterprise solutions with power and precision!

Porto-based opportunity with hybrid work model

As a Senior .NET Developer, you will be working for our client, a forward-thinking leader in the technology industry dedicated to delivering robust, scalable, and innovative software solutions. You will play a crucial role in designing, upgrading, and optimizing applications that empower businesses to stay ahead in a competitive landscape. Join us and be part of a journey that pushes technical boundaries and drives digital transformation.

Your main responsibilities:

• Design and develop high-quality, scalable .NET applications following best practices and architectural standards
• Enhance and upgrade existing applications to ensure optimal performance, security, and maintainability
• Develop and optimize complex SQL queries, stored procedures, and views for efficient data processing
• Establish and maintain automated testing frameworks to ensure code quality and reliability
• Collaborate with cross-functional teams using agile methodologies to deliver innovative solutions
• Integrate RESTful APIs to enable seamless data and service communication
• Apply SOLID principles and design patterns to create flexible and maintainable code
• Participate in code reviews, knowledge sharing, and continuous improvement initiatives

You're ideal for this role if you have:

• 6+ years of professional experience in software development, with a strong focus on C# and .NET technologies
• Proven expertise in SQL, including database architecture and complex query optimization
• Hands-on experience in developing and working with RESTful APIs
• Solid understanding of SOLID principles and design patterns
• Experience working in agile environments
• Fluent in English, with Portuguese language skills considered a plus

It is a strong plus if you have:

• Certifications related to .NET or software architecture
• Experience with automated testing tools and frameworks

Language Required for the role:

• English (Fluent), Portuguese (Conversational/Fluent preferred)

Eligibility to work on this role:

• Only candidates with an existing legal right to work in the European Union will be considered for this role.