The Opportunity Join a fast\-growing AI marketing agency at a pivotal moment. We're not just using AI—we're building proprietary platforms that transform how brands approach marketing. As our Principal/Lead Engineer, you'll architect and build the technical foundation that powers innovative AI\-driven marketing solutions for global clients. This isn't a typical engineering role. You'll have the unique opportunity to: * Shape the technical vision of a growing AI company from the earliest stages * Work with cutting\-edge AI technologies (GraphRAG, LLMs, generative AI pipelines) in production * Balance hands\-on development (65% coding) with strategic architecture decisions (35%) * Partner directly with enterprise clients—including Fortune 500 companies—as their technical counterpart * Build and mentor a world\-class engineering team as we scale What You'll Do Strategic Architecture (35% of time) * Design scalable, secure cloud architectures for AI\-powered marketing platforms across AWS/Azure/GCP * Partner with enterprise clients as the technical counterpart to their Solution Architects and IT leadership teams * Make critical technology decisions, balancing rapid MVP delivery with long\-term scalability * Evaluate AI tools and infrastructure—build vs. buy decisions for AI models, commercial APIs vs. open\-source solutions * Plan for compliance and security—prepare for ISO 27001, GDPR, and CCPA certifications * Own the technical roadmap aligned with business objectives and market needs Hands\-On Development \& Technical Leadership (65% of time) * Build core platform components using Python (FastAPI/Flask), designing and implementing production\-ready APIs * Architect end\-to\-end data pipelines—from ingestion through processing to AI model integration * Lead infrastructure setup—establish CI/CD pipelines, infrastructure\-as\-code (Terraform), containerization (Docker/Kubernetes) * Develop AI/ML solutions—implement GraphRAG pipelines, RAG architectures, and integrate LLM APIs into production systems * Code review and mentor engineers while maintaining high code quality standards * Drive engineering excellence—establish development workflows, testing practices, and modern Agile/Lean methodologies Team Building \& Culture * Lead by example through hands\-on contributions and code reviews * Establish engineering best practices and quality standards that scale * Build and mentor the engineering team as we grow What We're Looking For Must\-Have Experience * 7\+ years of software engineering experience with increasing technical leadership * Fluent English \& Spanish (written and spoken)—you'll engage daily in complex technical discussions with international clients and stakeholders * Strong Python expertise with modern frameworks (FastAPI, Flask) and API design (REST, GraphQL) * Production cloud experience designing and deploying scalable systems on AWS, Azure, or GCP * DevOps \& Infrastructure mastery—Docker, Kubernetes, CI/CD, infrastructure\-as\-code (Terraform) * Data architecture experience—designing data pipelines, ETL processes, and working with both SQL and NoSQL databases * Track record of building 0\-to\-1 products or leading technical initiatives in startup/scale\-up environments Highly Desired (What Makes You Stand Out) * AI/ML production experience—especially with LLMs, RAG architectures, GraphRAG, or generative AI pipelines * Experience as a technical liaison to enterprise clients or as Solution Architect on large\-scale projects * Vector databases (FAISS, Weaviate, Qdrant) or graph databases (Neo4j) experience * Background in marketing tech, adtech, or SaaS platforms * Security \& compliance knowledge—ISO 27001, SOC 2, GDPR, or similar frameworks * Open\-source contributions or technical writing/speaking experience Personal Attributes * Entrepreneurial mindset—comfortable with ambiguity and excited about building from scratch * Hands\-on builder who can balance strategic thinking with getting into the code * Excellent communicator—able to explain complex technical concepts to both technical and non\-technical audiences * Quality\-driven with strong opinions about best practices but pragmatic about trade\-offs * Natural mentor who enjoys helping others grow technically * Curious about AI and passionate about its practical applications in business Our Technology Stack We use modern, best\-in\-class technologies. Here's what you'll work with: Cloud \& Infrastructure * Cloud: AWS \& Azure (multi\-cloud ready) * IaC: Terraform, Bicep * Containers: Docker, ECS (Fargate), EKS/AKS * CI/CD: GitHub Actions, Azure DevOps * Secrets: AWS Systems Manager, Azure Key Vault Backend \& APIs * Primary: Python (FastAPI, Flask) * Secondary: Node.js * Testing: Pytest, Coverage.py, Ruff Data \& Databases * Relational: PostgreSQL (RDS / Azure Database) * Caching: Redis (ElastiCache) * Object Storage: S3, Azure Blob Storage * ETL: Airbyte, dbt, Azure Data Factory * Processing: Apache Spark (EMR / Azure Synapse) AI \& Machine Learning * LLMs: OpenAI (GPT\-4o), Azure OpenAI, Anthropic * RAG Frameworks: GraphRAG with Neo4j, LangChain, LlamaIndex * Vector DBs: FAISS, Weaviate, Qdrant * ML Deployment: SageMaker, Azure ML, Hugging Face * Classic ML: scikit\-learn, spaCy, XGBoost Observability \& Security * Monitoring: CloudWatch, Azure Monitor, Prometheus, Grafana * Error Tracking: Sentry * Auth: OAuth2/JWT, Cognito, Azure AD B2C What We Offer * Competitive compensation reflecting your senior expertise and leadership impact * Hybrid flexibility—work from home 3 days with strategic 2 days in\-office collaboration * Professional development budget for courses, conferences, and certifications * Cutting\-edge technology—work with the latest AI/ML tools and modern cloud infrastructure * High autonomy—own technical decisions and drive architectural direction * Direct impact—see your work go from idea to production in weeks, not months * International exposure—collaborate with clients and teams across E...