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Dexter A.

Dexter A.

AI & Machine Learning Engineer · Senior

United States · Rate on request

Professional Overview

10+ years full-stack engineering, 7+ years deep in Gen AI - GPT-4o, Claude, Gemini, AWS Bedrock. Built RAG pipelines, Agentic workflows & LLM products across healthcare, finance & real estate. Stack: Python, FastAPI, .NET, React, LangChain, LangGraph, Qdrant. Architecture to production - I own it all.

Experience

Company
Accenture
Feb 2024 – Mar 2026
Role title
Senior AI/ML Platform Engineer

AI Expertise

AI & Machine Learning Engineers MLOps & AI Infrastructure

Skills

Python AWS LangChain RAG Kubernetes Docker Prompt Engineering Hugging Face

Employment Type

Full-time

Description of Responsibilities

  • Architected production-grade Agentic RAG platform on AWS ECS using Bedrock & Qdr
  • Designed multi-agent LangGraph workflows with memory & tool-calling.
  • Integrated AWS Bedrock Agents for live data retrieval & automation.
  • Built LLM observability pipeline via LangSmith & Arize Phoenix.
  • Standardized Docker/K8s deployments with Terraform IaC.

Key Achievements / KPIs

  • Reduced query response time by ~60% via Agentic RAG platform.
  • Cut LLM inference costs by ~42% via prompt optimization & Redis caching.
  • Improved stability with structured logging, tracing & eval harnesses.
  • Owned full AI lifecycle — prompt design to cloud deployment.

Education

School
Notre Dame de Namur University
Sep 2012 – May 2016
Degree / Program
Bachelor's degree

Field of Study: Computer Science

Areas of Expertise

AI & Machine Learning Engineers

Design, train, and ship production ML models — from data pipelines to model inference at scale. Covers supervised learning, neural networks, LLM integration, and model optimisation.

NLP & Prompt Engineering

Build natural language processing systems, fine-tune large language models, and craft reliable production prompts for AI-powered products.

Data Science & Analytics

Extract business insights from raw data using statistical modelling, predictive analytics, A/B testing, and interactive dashboards.

MLOps & AI Infrastructure

Architect scalable ML infrastructure — CI/CD for ML, model versioning, experiment tracking, monitoring, and cloud deployment on AWS, GCP, or Azure.

Open to

Full-time Part-time Freelance Contract Contract-to-hire

Experience Level

Senior

Current location

United States

Time Zone

New York UTC-5

Primary Work Language

English

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