AI ENGINEER – .NET DEVELOPMENT BACKGROUND (HYBRID)

iTRTech Group; Lisboa; Hybrid; EUR 23,000 - 26,000; Full time

Job summary

iTRTech Group is seeking an AI Engineer with a strong .NET backend background to join a hybrid role in Portugal (Lisbon/Porto/Fundão/Coimbra). You will design and deliver scalable C#/.NET APIs, and integrate AI-powered features and LLMs into software.

The ideal candidate has 3–4+ years in software engineering, cloud experience (Azure), and familiarity with CI/CD and databases. English fluency is required, and the role offers hybrid work 2–3 days in the office.

Qualifications

• 3–4+ years in software engineering or backend development, preferably with C#/.NET.
• Strong backend services, APIs, and scalable applications experience.
• Experience with AI development, LLM integration, or AI-powered apps.
• Knowledge of software architecture, design patterns, and best practices.
• Experience with Azure and cloud technologies.
• Familiarity with CI/CD, SQL, data modelling, and version control; English fluency.

Responsibilities

• Design, develop, and maintain scalable backend apps and APIs using C#/.NET.
• Develop and integrate AI-powered features, LLMs, and AI services into apps.
• Explore AI Agents, agentic AI workflows, and automation solutions.
• Design cloud architectures, DB integrations, and CI/CD pipelines.
• Apply software engineering patterns and AI-assisted development tools.
• Collaborate with teams in Agile environments to ensure quality and performance.

Skills

C#/.NET

AI development

LLMs integration

Azure cloud

CI/CD pipelines

Education

Bachelor/Master in CS or related

Tools

Git

Jira

Confluence

LangChain

Semantic Kernel

Job description

AI ENGINEER – .NET DEVELOPMENT BACKGROUND (HYBRID LISBON, PORTO, FUNDÃO OR COIMBRA)

Portuguese company hires for hybrid position.

Location: Lisbon, Porto, Fundão or Coimbra, Portugal.

Only candidates already based in Portugal will be considered.

Work Model: Hybrid — 2 to 3 days per week in the office.

Language Requirements: Fluent English (mandatory).

Seniority: Mid/Senior (3–4+ years in Software Engineering or Backend Development).

Rate Between €3500 - 4000 RV or Unipessoal (gross value) OR €2100–€2300/month gross salary + benefits (employment contract).

Duration: 6 months, with possibility of renewal.

About The Opportunity

We are looking for an AI Engineer with a strong Software Engineering background, preferably in C#/.NET Backend Development, who has transitioned or is transitioning into Artificial Intelligence.

The ideal candidate combines solid backend development skills with practical experience integrating LLMs, AI-powered features, and modern AI technologies into software applications.

Responsibilities

• Design, develop, and maintain scalable backend applications and APIs using C#/.NET.
• Develop and integrate AI-powered features, LLMs, and intelligent services into existing applications.
• Explore and implement AI Agents, Agentic AI workflows, and automation solutions.
• Design cloud-based architectures, database integrations, and CI/CD pipelines.
• Apply software engineering best practices, design patterns, and AI-assisted development tools.
• Collaborate with technical teams and stakeholders in Agile environments, ensuring quality, performance, and maintainability.

Requirements

• 3–4+ years of professional experience in Software Engineering or Backend Development, preferably with C#/.NET/.NET Core.
• Strong hands‑on experience developing backend services, APIs, and scalable applications.
• Practical experience or demonstrated exposure to AI development, LLM integration, or AI‑powered applications.
• Good understanding of software architecture, design patterns, and engineering best practices.
• Experience with cloud technologies, preferably Microsoft Azure.
• Knowledge of SQL, data modelling, relational/non‑relational databases, CI/CD, and version control.
• Familiarity with AI‑assisted development tools, coding agents, Git, Jira, Confluence, and Agile methodologies.
• Relevant technical degree, strong analytical skills, and fluent English.

Nice To Have

• Experience with Generative AI, Agentic AI, AI Agents, and RAG architectures.
• Knowledge of Semantic Kernel, Microsoft AutoGen, LangChain, or similar frameworks.
• Experience with Azure OpenAI, Azure AI Foundry, and AI model orchestration.
• Knowledge of prompt engineering, fine‑tuning, Python, or multi‑agent architectures.
• Experience deploying AI‑powered applications into production.

Ideal Candidate Profile

We are particularly interested in professionals following a career progression such as .NET Developer -> Senior Backend Developer -> AI/GenAI Engineer.

Extensive experience as a dedicated AI Engineer is not mandatory. However, candidates should demonstrate a genuine technical transition towards AI through practical projects involving LLMs, Generative AI, AI integrations, or intelligent agents.

5 Questions for Candidates

• How many years of experience do you have in Software Engineering, particularly with C#/.NET Backend Development?
• Have you developed or integrated AI‑powered applications, LLMs, or Generative AI solutions? Please provide an example.
• Do you have experience with Azure, backend APIs, databases, and CI/CD pipelines?
• Have you worked with AI Agents, RAG, Semantic Kernel, LangChain, or similar AI frameworks?
• Are you available to work hybrid (2–3 days per week) in Lisbon, Porto, Fundão, or Coimbra? Which contract model and salary range would you prefer?

Keywords

AI Engineer, .NET Developer, C#, .NET Core, Backend Development, Generative AI, GenAI, LLMs, AI Agents, Agentic AI, RAG, Semantic Kernel, Microsoft AutoGen, LangChain, Azure OpenAI, Azure AI Foundry, REST APIs, SQL, CI/CD, Python, Software Architecture, Hybrid Portugal

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