Job Title
We are seeking a highly skilled Senior Backend/AI Engineer to join our team.
* This is a hands-on, product-oriented role at the intersection of backend systems and applied artificial intelligence.
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About the Job
You will be working on a project for one of our international clients in the customer communications and intelligence sector.
* This is a fast-moving environment where voice, digital channels, and automation converge to create seamless customer experiences.
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Your Responsibilities
1. Participate in requirements analysis to design backend and AI-powered solutions aligned with product and business goals.
2. Design and implement robust backend systems that serve intelligent features in real time.
3. Integrate large language models (LLMs) such as GPT, Claude, Mistral, or Llama into production applications.
4. Apply frameworks like LangChain, LlamaIndex, or AutoGen to build conversational agents, virtual assistants, and smart automation tools.
5. Build retrieval pipelines (e.g., RAG) to enrich model context and improve response accuracy.
6. Develop scalable APIs and microservices that embed AI capabilities into enterprise communication platforms.
7. Collaborate with MLOps, DevOps, and data engineering teams to ensure observability, scalability, and continuous improvement.
8. Participate in live system monitoring and on-call rotations to maintain system reliability and performance.
9. Mentor team members and promote best practices in backend engineering and AI integration.
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Requirements
* Solid experience (5+ years) in backend software development, ideally using Python, Node.js, or similar.
* Exposure to applied AI concepts and a strong interest in building real-world AI-powered features.
* Proficiency in Python for API development and AI/data integration.
* Experience with cloud platforms (ideally Azure) and familiarity with services like Azure OpenAI, Functions, and ML.
* Working knowledge of LLMs and GenAI frameworks (e.g., LangChain, LlamaIndex, Semantic Kernel).
* Comfort with CI/CD pipelines, containerization (Docker), and scalable microservice architectures.
* Proven ability to deliver robust, production-grade systems with measurable business value.
* Awareness of AI evaluation methods, prompt design, and safe deployment practices.
* Strong communication and collaboration skills.
* A practical mindset — focused on delivering value, learning fast, and iterating with purpose.
* Fluent in Portuguese and English is mandatory.
* Availability to work in a hybrid model in Lisbon.
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What We Offer
* An amazing informal culture of smart, hardworking, and friendly people who support and care about each other.
* A mentorship program from day one.
* Opportunity to influence strategic AI initiatives in high-visibility projects.
* Formal training and certifications in Gen AI, cloud, and engineering excellence.
* Access to cutting-edge tools and resources in AI and cloud computing.
* A dynamic company where your ideas matter more than job titles.
* Flexibility with responsibility.
* Happy hours and feel-good after-hours events.