Senior .NET Developer (On-site) — Oeiras, Portugal

A leading tech company with operations in Portugal, Angola and Mozambique is looking to strengthen its internal team with a Senior .NET Developer. We build cutting-edge software and hardware solutions for the financial and banking sector, with a clear purpose: transform financial services through innovative, integrable, people-centered technology.

Why join us?

• International reach: digital transformation across multiple geographies and fast-growing markets
• Specialized know-how: a multidisciplinary team of 130 professionals across diverse technologies
• A culture with an active voice: we value initiative, ownership and open idea-sharing—your input shapes what we build

Your role

• Define best practices, run code reviews and ensure strong test coverage
• Partner with the Tech Lead on software architecture and key technical decisions
• Support junior developers through pair programming, feedback and knowledge sharing

What we’re looking for

• Degree in Computer Engineering, Computer Science or related field
• 5+ years developing applications with .NET 4.8 / .NET 8+
• Strong .NET background with SOLID, DDD and CQRS
• CI/CD automation experience; managing .NET apps in Docker & Kubernetes
• Experience with high-performance / high-availability environments
• Security knowledge: OWASP (Web & API), modern auth (OAuth2, OIDC, JWT), mitigation of Injection, XSS, CSRF
• Azure Cloud experience (plus)
• Integrations with financial tech (e.g., payment gateways) and/or biometrics (plus)
• Hardware integration using XFS protocol (plus)
• Socket-based communication development (plus)
• Proactive, team-oriented, with a technical leadership mindset
• Portuguese (advanced) and English (intermediate)
• Legal eligibility to work in Portugal (mandatory)

Work conditions

• Location: Oeiras, Portugal
• Model: On-site
• Contract: Full-time employment contract

What we offer

• Competitive salary aligned with the market and role
• Health insurance
• Meal allowance (paid via meal card)
• Extra days off
• Continuous training and ongoing support
• Diverse projects and exposure to international markets
• Collaborative and inclusive environment
• Additional benefits, discounts, partnerships—and great vibes

Ready to join?

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