Fullstack Developer (Focus on Backend .NET + AI-Assisted Development)

Description

Job Summary: We are seeking a Fullstack Developer with a strong focus on backend (.NET) to orchestrate, validate, and integrate AI-generated code in a modern environment powered by Claude AI. Key Highlights: 1. Working with AI tools, including Claude AI 2. Focus on .NET backend development and AI code orchestration 3. Modern work environment and appreciation of people **Fox IT** is a Portuguese IT consulting company ranked for the 5th consecutive year among the top 5% of SMEs in Portugal and, for the first time, among the national top 10 in the IT sector. Our mission is to bring a fairer approach to the IT market, promoting a more balanced exchange among ourselves, our consultants, and our clients. Most recently, we received the Happy at Work certification, reinforcing our commitment to valuing our people. We are looking for a **Fullstack Developer** with a strong focus on **backend (.NET)**, who will work in a modern environment driven by Artificial Intelligence tools—specifically **Claude AI**. This role departs from traditional development models: the professional will be responsible not only for programming but, above all, for **orchestrating, validating, and integrating AI-generated code**, ensuring solution quality, consistency, and performance. **Responsibilities** * Develop and maintain applications focused on **.NET (backend)** * Integrate simple frontend components using **HTML, CSS, and JavaScript** * Use **Claude AI** to generate code blocks and accelerate development * Review, validate, and adapt AI-generated code * Ensure best practices in architecture and code quality * Coordinate and structure different application components * Collaborate with the team to define efficient technical solutions **Requirements** * Solid experience with **.NET (C\#)** * Basic/intermediate knowledge of **JavaScript, HTML, and CSS** * Problem-solving mindset and critical thinking * Ability to work with **AI tools in development** * Experience or interest in **AI-assisted coding** (e.g., Claude, Copilot, etc.) * Strong organizational skills and holistic system vision **We Value** * Experience integrating APIs * Knowledge of software architecture (e.g., microservices) * Prior experience with AI tools in development * Autonomous, results-oriented profile **Work Model:** Availability for a hybrid model (2 days per week at our Lisbon offices). **What We Offer:** * 26 vacation days; * Health insurance; * €50 birthday bonus; * Extensive daily use of AI tools; * Flexibility and autonomy. Take the Leap—Join Us! Employment Type: Full-time Work Location: Hybrid remote work in Lisbon