Senior Full Stack Engineer AI Platforms

Tanny Hartley

Senior Full Stack Engineer

703-***-**** ************@*****.*** United States

Authorized to work in the United States

SUMMARY

Senior Full Stack Engineer with Over 7 years of experience across logistics, fintech, healthcare, and e-commerce.

Built AI-powered platforms, payment processing engines, telehealth systems, and grocery delivery solutions at

scale. Delivered end-to-end microservices, event-driven architectures, and real-time data pipelines with

measurable business impact.

SKILLS

Frontend: React.js, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Material-UI, Redux, React

Query, WebSockets.

Backend & APIs: Python, Flask, FastAPI, Django, REST APIs, GraphQL, Microservices Architecture, API Design.

Databases: PostgreSQL, MongoDB, Redis, Vector DBs (Pinecone, Weaviate, Milvus).

Cloud & DevOps: AWS (ECS, EKS, Lambda, SQS, SNS, RDS, S3, API Gateway), Docker, Kubernetes, Terraform,

GitHub Actions, ArgoCD, GitOps, CI/CD.

Testing & Observability: Pytest, Jest, React Testing Library, OpenTelemetry, Prometheus, Grafana.

AI Integrations: OpenAI, LangChain, Prompt Engineering, RAG, Vector Databases, Claude, Cursor.

Tools & Methodologies: Git, Agile/Scrum, Code Review, End-to-End Development, Database Schema Design,

Deployment Pipelines.

PROFESSIONAL EXPERIENCE

Senior Full Stack Engineer

Nash

05/2024 – Present

Built AI-powered logistics orchestration engine in FastAPI with OpenAI LLMs and prompt engineering,

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automating delivery decisions across 1,000+ carriers and cutting dispatch time by 40%.

Developed end-to-end fleet management dashboard in Next.js, TypeScript, and Tailwind CSS with WebSocket

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tracking, enabling dispatchers to monitor 500+ active drivers in real-time.

Engineered event-driven microservices on AWS Lambda with SQS and SNS, deploying on ECS with Docker

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containers and implementing retry logic that reduced failed deliveries by 25%.

Created AI data normalization layer using LangChain with RAG pipeline on Pinecone vector DB and agentic

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workflows, accelerating carrier onboarding from 2 weeks to 3 days.

Designed deployment pipelines with GitHub Actions, ArgoCD, and Terraform on EKS, reducing deployment

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time from 45 to 10 minutes with zero downtime.

Evaluated and implemented quality-control frameworks for AI-generated code using deterministic validation

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checks, ensuring LLM outputs met production reliability standards.

Software Engineer (Full Stack)

Wipro

06/2021 – 04/2024

Architected FastAPI payment microservice with GraphQL for 500K+ daily transactions, dynamically selecting

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gateways to cut costs by 15%.

Built interactive React and Redux dashboards with WebSocket live alerts and Material-UI components,

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reducing fraud investigation time by 60%.

Designed database schema for PostgreSQL with composite indexing and Redis caching, handling 10M+

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monthly REST API requests with 85% faster response times.

Containerized applications with Docker, orchestrated on Kubernetes with Terraform, and migrated PHP batch

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jobs to Python AWS Lambda, reducing processing from 45 to 4 minutes.

Implemented OpenTelemetry with Prometheus and Grafana for observability, reducing incident resolution by

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50% and maintaining 99.95% availability.

Mentored 4 junior engineers through code reviews, pair programming, and architecture design sessions.

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Software Engineer

Teladoc Health

03/2019 – 05/2021

Built HIPAA-compliant telehealth microservices using Django, DRF, FastAPI, and SQLAlchemy, supporting

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2M+ monthly sessions with 99.9% uptime.

Developed end-to-end patient portals in React, TypeScript, and Material-UI with React Query for data fetching,

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featuring WebRTC video consultations.

Designed event-driven data pipelines on AWS Kinesis and Lambda, streaming biometric data to predictive

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models, reducing readmissions by 18%.

Optimized PostgreSQL with Redis caching and MongoDB for flexible data storage, cutting API latency by 35%

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and handling 40% higher peak traffic.

Implemented CI/CD with GitHub Actions and comprehensive testing using Pytest and Jest/React Testing

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Library, maintaining 90%+ coverage with zero critical bugs.

EDUCATION

Bachelor of Science in Computer Science

UOS

PROJECTS

Pick & Deliver

E-commerce / Grocery Delivery

Built backend orchestration for guided picking with aisle locations, substitutions, and barcode verification.

Served Walmart, 7-Eleven, and Woolworths.

Payment Routing Engine

Fintech

Built a smart payment routing system that selects the best payment gateway for each transaction based on cost

and success rate.

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