.NET / C# Software Engineer Porto

.NET / C# Software Engineer
Porto
Porto, Porto District, Portugal

About e
Xalt-Fi

Founded in 2018, e
Xalt-Fi is a consulting firm built on intrapreneurship, agility, and innovation. With over 1, 300 collaborators, we specialize in Digital Transformation, Financial Services, Product & Project Management, and Technology (development, cloud, data, infrastructure, cybersecurity).

Since 2025, our Lisbon and Porto offices support major financial institutions, delivering impactful IT and business solutions within an international environment.

About the Client

We are supporting one of our clients, a leading international financial institution , in strengthening its technology teams. The teams operate as a global hub, delivering
- critical applications and platforms to support trading and risk activities across worldwide markets.

The Role

We are looking for an experienced C# Developer to contribute to both frontend and backend development. The role involves enhancing user interfaces, implementing a new
- side architecture, and ensuring
- performance handling of large volumes of financial data.

You will work closely with traders, quantitative analysts, and
- functional development teams in an agile environment. The ideal candidate is proactive,
- oriented, and capable of driving technical improvements while ensuring smooth collaboration across international teams.

Main Responsibilities

• Develop new features and enhancements for both UI and backend services .
• Ensure code quality through reviews, best practices, and testing standards.
• Collaborate with business analysts, QA teams, and production support.
• Actively contribute to sprint planning, daily
  - ups, and agile ceremonies.
• Provide regular progress updates and escalate risks/issues when necessary.
• Work with onshore and offshore teams across multiple locations.
• Support production (L3) and maintain
  - production environments for testing.
• Participate in
  - call rotations, including evening coverage for US markets and occasional weekend release support.

Key Skills & Experience

Must-have:

• 10+ years of experience in . NET / C# development .
• Strong expertise with the Microsoft. NET Framework .
• Experience with UI optimization and UI test automation .
• Proficiency in using profiling tools to optimize CPU and memory usage .
• Strong communication skills and ability to collaborate with traders, quants, and
  - functional teams.
• Proactive mindset with the ability to take ownership and propose constructive solutions.

Nice-to-have:

• Prior experience in the financial services domain .
• Familiarity with
  - scale,
  - intensive applications.
• Experience working in distributed, global agile teams.

This is a great opportunity for a seasoned C# developer to work on
- impact financial applications, in a
- paced environment where technical excellence meets business innovation.