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Jubreelfx User

@davidwlyer

Lead full-stack engineer with 13+ years building enterprise SaaS, modernizing systems, and integrating AI into workflows.

United States

Message

What I'm looking for

I’m looking to own services end-to-end—designing pragmatic architecture, modernizing legacy systems into microservices, and integrating AI/LLMs into real workflows. I want a fast-paced team where mentoring, debugging excellence, and reliable production support matter.

I’m a Senior Full-Stack Engineer with 13+ years of experience building and evolving enterprise SaaS and cloud-based platforms. I bring strong React, TypeScript, Python, Go, Java, and distributed backend experience, with a pragmatic approach to architecture and debugging.

At AT&T, I’ve contributed to customer-facing digital platforms supporting large-scale telecom services. I build frontend applications with React and Next.js, develop backend services with Java, Node.js, Go, and Python, and design REST and GraphQL APIs for web and mobile clients. I modernize legacy monoliths into microservices, use Kafka for event-driven communication, add Redis caching, integrate LLM-based services into real workflows, and deploy containerized services to Kubernetes across AWS and Azure while participating in on-call production support.

Previously at Workday, I developed full-stack features for enterprise HR and financial modules, including backend services with Python (FastAPI/Flask), relational data modeling, and performance-focused PostgreSQL query optimization. I’m motivated by end-to-end ownership—from design through production support—along with mentoring engineers, improving CI/CD pipelines, and translating product and UX needs into reliable technical solutions.

Experience

Work history, roles, and key accomplishments

Current

Lead Full-Stack Engineer

Current

AT&T

Feb 2019 - Present (7 years 4 months)

Designed and built customer-facing digital platforms for large-scale telecom services, developing React/Next.js frontends and backend APIs and workflow services. Modernized legacy monolith components into microservices, implemented Kafka event-driven communication, integrated LLM-based workflow automation, and supported deployments in AWS/Azure with Docker and Kubernetes.

React Next.js TypeScript Go Python Kafka GraphQL AWS Kubernetes

Senior Full-Stack Software Engineer

Workday

Oct 2013 - Jan 2019 (5 years 3 months)

Developed full-stack features for HR and financial management modules, building Python backend services for workforce data processing, rules, and reporting. Implemented REST APIs and React/TypeScript UI components, optimized PostgreSQL queries, supported production issue triage, and contributed to service modularization and CI/CD improvements.