Full-Stack AI Engineer
Pavago · Remote, Portugal
About The Role
Job Title: Full-Stack AI Engineer
Position Type: Full-Time, Remote
Working Hours: U.S. client business hours (with flexibility for deployments, experimentation cycles, and sprint schedules)
About the Role
Our client is seeking a highly skilled Full-Stack AI Engineer to design, build, and deploy scalable AI-powered applications that solve real-world business problems.
This role bridges software engineering with applied machine learning, combining front-end development, back-end systems, AI model integration, and cloud infrastructure into production-ready applications. You will work across the full product lifecycle — from experimentation and prototyping to deployment, optimization, and monitoring.
The ideal candidate is both technically strong and execution-focused, capable of building AI-driven systems that are scalable, reliable, performant, and user-friendly.
Responsibilities
AI Model Integration & LLM Systems
- Deploy and integrate pre-trained and fine-tuned ML / LLM models using OpenAI, Hugging Face, TensorFlow, PyTorch, or similar frameworks
- Build scalable AI inference APIs using FastAPI, Flask, Node.js, or similar technologies
- Implement retrieval-augmented generation (RAG) pipelines using vector databases such as Pinecone, Weaviate, Chroma, or FAISS
- Optimize prompt engineering, embeddings, and AI workflows for performance, accuracy, and cost efficiency
Full-Stack Application Development
- Build responsive front-end applications using React, Next.js, Vue, or similar frameworks
- Develop back-end services and APIs connecting AI systems to business workflows and user-facing applications
- Design scalable architectures for chatbots, AI assistants, analytics dashboards, search systems, and workflow automation tools
- Ensure applications are intuitive, secure, responsive, and production-ready
Data Engineering & Pipeline Development
- Build ETL/ELT pipelines for ingesting, cleaning, transforming, and processing structured and unstructured datasets
- Automate data preprocessing, versioning, labeling, and pipeline orchestration using Airflow, Prefect, Dagster, or similar tools
- Store and manage datasets within cloud warehouses such as Snowflake, BigQuery, or Redshift
- Maintain reliable data flows supporting training, inference, analytics, and AI operations
Infrastructure, Deployment & MLOps
- Containerize AI services using Docker and deploy workloads to Kubernetes or cloud-native environments
- Build and maintain CI/CD pipelines for AI model updates and application releases
- Monitor inference latency, application performance, costs, and model drift using MLflow, Weights & Biases, Prometheus, or custom dashboards
- Support scalable and reliable cloud infrastructure on AWS, GCP, or Azure
Security & Compliance
- Ensure AI systems comply with GDPR, HIPAA, SOC 2, or relevant privacy/security standards
- Implement authentication, access control, rate limiting, and secure API practices
- Protect user data and AI workflows using modern security standards and best practices
Collaboration & Product Development
- Collaborate with product managers, designers, and data scientists to prioritize impactful AI features
- Translate prototypes into production-grade systems with scalable architecture and maintainable code
- Participate in sprint planning, architecture discussions, code reviews, and technical documentation
- Maintain clear documentation to support reproducibility, onboarding, and long-term maintainability
What Makes You a Perfect Fit
- Strong software engineer with deep curiosity around AI/ML systems and emerging technologies
- Comfortable moving quickly from prototype to production-grade deployment
- Analytical and solutions-oriented with strong debugging and optimization skills
- Able to balance performance, scalability, usability, and operational cost
- Collaborative communicator who works effectively across technical and non-technical teams
Required Experience & Skills
- 3+ years of professional software engineering experience with AI/ML exposure
- Strong proficiency in Python and JavaScript/TypeScript
- Experience with AI/ML frameworks such as PyTorch, TensorFlow, LangChain, or Hugging Face
- Experience deploying AI or ML models into production systems
- Strong front-end experience with React, Next.js, or Vue
- Strong SQL skills and experience with cloud data warehouses
- Familiarity with REST APIs, microservices, and distributed systems
- Experience with Docker, CI/CD workflows, and cloud infrastructure
Preferred Experience & Skills
- Experience building and scaling AI-powered SaaS applications
- Strong understanding of embeddings, vector databases, and RAG architectures
- Experience with LLM fine-tuning, evaluation, and prompt optimization
- Familiarity with MLOps tools such as MLflow, Kubeflow, Vertex AI, SageMaker, or Weights & Biases
- Experience with serverless architectures and cost-optimized inference systems
- Background in SaaS, automation platforms, analytics systems, or AI-driven products
What Does a Typical Day Look Like?
A Full-Stack AI Engineer’s day revolves around transforming AI capabilities into scalable, production-ready applications. You will:
- Review and optimize AI model APIs for latency, accuracy, and reliability
- Build front-end interfaces that expose AI-driven functionality to end users
- Maintain and improve data pipelines supporting AI systems and analytics
- Deploy updates through CI/CD workflows and monitor production performance
- Collaborate with product and data science teams on AI feature prioritization
- Debug infrastructure, inference, or workflow issues impacting system performance
- Document architectures, workflows, and deployment processes for maintainability and scaling
In essence: you ensure AI systems move beyond prototypes into secure, scalable, reliable, and impactful production applications.
Key Metrics for Success (KPIs)
- Successful deployment of AI features aligned with sprint timelines
- Application uptime ≥ 99.9%
- Inference latency maintained below target thresholds
- Reduction in manual workflows through AI automation
- Stable model performance and minimized drift or degradation
- Positive adoption and engagement with AI-powered features
- Scalable, maintainable, and cost-efficient AI infrastructure
Interview Process
- Initial Phone Screen
- Video Interview with Pavago Recruiter
- Technical Assessment (e.g., deploy an ML model with API + front-end integration)
- Client Interview(s) with Engineering / Product Teams
- Offer & Background Verification
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