Mid-Senior FullStack Developer.

Olisipo
Full-time Lisbon, Lisbon Business Operations Specialists
Posted:
June 13, 2026
Location:
Lisbon, Lisbon, Portugal

Job Description

Profile:
- Degree in Computer Science, Computer Engineering or related area;
- At least 3 years of experience with .NET Framework, C#, LINQ and SQL;
- Strong knowledge of Client/Server architecture and TCP/IP communication protocols;
- Proficiency in Database Modelling and Design, particularly with PostgreSQL;
- Experience with GitLab, GitHub and Jira;
- Comfortable working in an Agile environment and collaborating in cross-functional teams;
- Excellent problem-solving mindset and effective communication skills;
- Fluent in spoken and written English.
Responsibilities:
- Maintain and enhance a Windows-based Client/Server Application using TCP/IP socket communication;
- Refactor and modernise legacy .NET code, ensuring seamless interaction between distributed clients and backend servers;
- Collaborate with Product Owners, Business Units and fellow Developers to improve and maintain software solutions;
- Use tools like Jira, Azure DevOp...

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Job Overview

Job Type: Full-time
Location: Lisbon, Portugal
Posted: June 13, 2026
Deadline: July 23, 2026