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Senior .Net Developer

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Senior .Net Developer

syffer by LUZA

Senior .Net Developer

Skills

SQL QueriesC#

4 months ago

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Important information


Contract type:

Permanent

Location:

Lisbon, Portugal

Work mode:

Remote

Published on:

8 August 2026

What they need


Syffer is an all-inclusive consulting company focused on talent, tech and innovation. We exist to elevate companies and humans all around the world, making change, from the inside to the outside.

We believe that technology + human kindness positively impacts every community around the world. Our approach is simple, we see a world without borders, and believe in equal opportunities. We are guided by our core principles of spreading positivity, good energy and promote equality and care for others.

Our hiring process is unique! People are selected by their value, education, talent and personality. We dont present ethnicity, religion, national origin, age, gender, sexual orientation or identity.

Its time to burst the bubble, and we will do it together!

What You'll do:

  • Design, develop, and maintain enterprise applications using C# and .NET technologies.
  • Build scalable, high-performance solutions following object-oriented design principles and best practices.
  • Develop and optimize multi-threaded applications to ensure performance, reliability, and scalability.
  • Design, implement, and optimize SQL Server databases, including data models, CRUD operations, transaction management, and performance tuning.
  • Perform advanced troubleshooting, root cause analysis, and resolution of complex technical issues.
  • Develop and maintain integrations leveraging .NET/COM interoperability.
  • Ensure software quality through the adoption of TDD (Test-Driven Development) and BDD (Behavior-Driven Development) practices.
  • Collaborate with cross-functional teams throughout the software development lifecycle.
  • Contribute to the implementation and improvement of Continuous Delivery (CD) processes and deployment automation.
  • Participate in code reviews and promote development best practices across the team.

Who You Are:

  • Bachelor's degree in Computer Science, Software Engineering, or a related field (preferred).
  • 6+ years of experience in software development with Microsoft technologies.
  • Strong proficiency in C# and .NET development.
  • Solid experience with SQL Server, including database design, transaction management, and query optimization.
  • Proven experience developing multi-threaded applications.
  • Strong analytical skills with the ability to perform advanced troubleshooting and problem resolution.
  • Experience with .NET/COM interoperability.
  • Strong understanding of Object-Oriented Design (OOD) and software engineering principles.
  • Hands-on experience with TDD and BDD methodologies.
  • Knowledge of Continuous Delivery (CD) and CI/CD practices.
  • Excellent problem-solving, communication, and teamwork skills.
  • Ability to work independently and effectively in a fast-paced environment.

What you'll get:

  • Wage according to candidate's professional experience;
  • Remote Work whenever possible;
  • Delivery of work equipment adjusted to the performance of functions;
  • Benefits plan;
  • And others.

Work together with expert teams on projects of large magnitude and intensity, long term together with our clients, all leaders in their industries.

Are you ready to step into a diverse and inclusive world with us?

Together we will promote uniquess!

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