We are redirecting you to the source. If you are not redirected in 3 seconds, please click here.

Senior Software Engineer at Fluxon. . Location: Portugal, Remote. Who we are. . We are Fluxon, a product development team founded by ex-Googlers and startup founders. We offer full-cycle software development: from ideation and design to build and go-to-market. . We partner with visionary companies, ranging from fast-growing startups to tech leaders like Google and Stripe, to turn bold ideas into products with the power to transform the world. . . The role is open to candidates based in Portugal preferably in Lisbon.. . About the role. . As an AI Engineer at Fluxon, you’ll take the lead in designing, building and deploying AI-powered applications for our clients.. . You'll be responsible for:. . . System Architecture. : Design and implement end-to-end AI systems and their parts, including data ingestion, preprocessing, model inference, and output structuring. . Generative AI Development. : Build and optimize RAG (Retrieval-Augmented Generation) systems and Agentic workflows using frameworks like . LangChain, LangGraph, ADK (Agent Development Kit), Genkit. . Production Engineering. : Deploy models to production environments (AWS/GCP/Azure) using Docker and Kubernetes, ensuring high availability and scalability. . Evaluation & Monitoring. : Implement feedback loops to evaluate model performance (accuracy, hallucinations, relevance) and set up monitoring for drift in production. . Collaboration. : Work closely with other engineers to integrate AI endpoints into the core product and with product managers to define AI capabilities. . Model Optimization. : Fine-tune open-source models (e.g., Llama, Mistral) for specific domain tasks and optimize them for latency and cost. . . You'll work with technologies including:. . Languages. . . Python (Preferred). . Java / C++ / Scala / R / JavaScript   . . . AI / ML. . . LangChain. . LangGraph. . Google ADK. . Genkit. . OpenAI API. . LLM - Large Language Model. . Vertex AI. . . Cloud & Infrastructure. . . Platforms: Google Cloud Platform (GCP) or Amazon Web Services (AWS). . Storage: Google Cloud Storage (GCS) or AWS S3. . Orchestration: Temporal, Kubernetes. . . Data Stores. . . PostgreSQL. . Firestore. . MongoDB. . . Monitoring & Observability. . . GCP Cloud Monitoring Suite. . . Qualifications. . . 5+ years of industry experience in software engineering roles. . Strong proficiency in Python or any preferred AI programming language such as Scala, Javascript and Java. . Strong understanding of Transformer architectures, embeddings, and vector similarity search. . Experience integrating with LLM provider APIs (OpenAI, Anthropic, Google Vertex AI). . Hands-on experience with agent workflows like LangChain, LangGraph. . Experience with Vector Databases and traditional SQL / NoSQL databases. . Familiarity with cloud platforms, preferably GCP or AWS. . Understanding of patterns like RAG (Retrieval-Augmented Generation), few-shot prompting, and Fine-Tuning. . Solid understanding of software development practices including version control (Git) and CI/CD. . . Nice to have:. . . Experience with Google Cloud Platform (GCP) services, specifically Vertex AI, Firestore, and Cloud Functions. . Knowledge of prompt engineering techniques (Chain-of-Thought, ReAct, Tree of Thoughts). . Experience building "Agentic" workflows where AI can execute tools or API calls autonomously. . . What we offer. . . Exposure to high-profile SV startups and enterprise companies. . Competitive salary. . Fully remote work with flexible hours. . Flexible paid time off. . Profit-sharing program. . Healthcare. . Parental leave, including adoption and fostering. . Gym membership and tuition reimbursement. . Hands-on career development.