Job Summary: We are seeking a Senior Fullstack Developer (.NET + React) to develop and enhance solutions with a strong emphasis on backend, ensuring quality and performance. Key Highlights: 1. Collaborate on challenging projects with real-world impact 2. Develop fullstack solutions with a focus on backend and integration 3. An environment that values professional growth and development We are partnering with a leading Portuguese retail company operating in Portugal and Spain. Within this context, we seek an energetic, responsible, and motivated individual to assume the role of **Senior Fullstack Developer (.NET + React)** for one of the initiatives we are delivering for this client. FCamara is one of Latin America’s fastest-growing technology and innovation groups, and since 2021 we have been present in Portugal. We operate across multiple domains, including Unified Commerce, Application Development, AI (of course), and Cybersecurity — deploying over 1,700 professionals across 12 companies in Brazil, Portugal, and the United Kingdom through projects, managed services, squads, and staff augmentation. Portugal serves as our service hub for the Northern Hemisphere. From here, our team supports clients across Portugal, the European Union, the United Kingdom, and the United States. In Europe, beyond FCamara’s brand as a technology services provider, we are also the principal investor and shareholder of Beta-i, a leader in open and collaborative innovation. At FCamara, members of our consulting and services teams — proudly called Orange Blood — find a space to grow and develop their skills. We work on challenging initiatives with tangible impact, creating conditions for genuine professional advancement. Whether joining us with prior experience or through our Orange Juice program, we take pride in knowing that many of our talents today are entrepreneurs or have advanced into leadership roles such as CTOs, IT Directors, Innovation Directors, and other leadership positions across organizations worldwide. "Those who join FCamara typically leave far better than when they arrived." — Said by former Orange Blood members, not by us. **Responsibilities and Duties** Practically speaking, this person will be responsible for **developing and evolving fullstack solutions with a strong backend focus, ensuring coding best practices, quality, and performance, as well as contributing to technical design and system integrations**. Your day-to-day will include: * Developing backend applications in .NET (C#) and REST APIs connected to PostgreSQL databases * Implementing frontend features using ReactJS * Participating in the technical design and evolution of complex solutions involving multiple integrations * Ensuring code quality, performance, and security standards * Working with modern architectures (microservices, event-driven) * Implementing containerized solutions (Docker, Kubernetes) * Configuring CI/CD pipelines using GitHub Actions or similar tools * Monitoring and implementing metrics using tools such as Grafana and Prometheus * Proactively collaborating with other technology and product teams **Requirements and Qualifications** For this position, we seek someone with at least **5 years of experience** in similar roles. You will be the right candidate if you meet these mandatory requirements: * Solid backend development experience with .NET (C#) * Experience developing and consuming REST APIs * Advanced knowledge of PostgreSQL databases * Frontend development experience with ReactJS * Experience in system integration projects * Familiarity with microservice and event-driven architectures * Experience with containers (Docker, Kubernetes) * Knowledge of observability tools (Grafana, Prometheus) * CI/CD experience * Strong understanding of software development best practices and performance optimization It will be considered an advantage in evaluating your profile if you meet these **preferred requirements**: * Experience with AI-powered code assistants * Prior exposure to low-code platforms such as OutSystems and RPA solutions * Previous experience in retail or corporate tech environments Beyond technical expertise, we also expect a collaborative, team-oriented profile: * Ability to understand requirements and propose technical solutions * Strong communication skills * Critical thinking and commitment to continuous improvement * Strong delivery orientation and focus on meeting deadlines and objectives **Additional Information** **This is a hybrid role requiring 2 days per week onsite at the client’s office located in the Metropolitan Area of Porto.** In this case, it is mandatory that you already reside in Portugal in a location enabling regular commuting to the office as required. This position is part of a long-term project. **Languages:** For this role, collaboration with both the FCamara team and the client occurs in Portuguese. English proficiency will be valued, especially for international interactions. **Contract Model:** We offer flexibility regarding the employment model. Our recruitment team will provide all details and information about contract type, compensation, and benefits tailored to your location and professional situation. **Nationality, Residency, and Visa:** We value and consider professionals of any nationality, provided they possess the required language proficiency and reside within the geographic area applicable to this position. As residency in Portugal is mandatory, non-EU nationals must hold a valid residence permit, card, or title authorizing paid employment. This position does not include visa or residence authorization support from FCamara. **Here, we are \#OrangeBlood!** We have been in the market for 17 years, side-by-side with our clients, delivering transformative experiences. We are a global technology and innovation ecosystem; beyond Brazil, we operate across Europe and the UK, with offices in Portugal, London, Dubai, and the Netherlands. **F for Formation: We believe in cultivating a culture of knowledge sharing, community, and the transformative power of learning!** We run initiatives and social actions promoting development, including the Orange Juice tech community, our Training Program, our leadership school, and numerous partnerships with NGOs and Edtechs. **At FCamara, everyone is welcome. For us, Diversity, Respect, and Ethics are non-negotiable elements embedded in our DNA.** So, are you ready to join an incredible team and become the protagonist of your own story?