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Hi, I’m Derrek Williams. I’m a Senior AI Full Stack Engineer with 10+ years of experience building production-grade AI, SaaS, backend, and full-stack applications. I translate complex business needs into scalable, reliable software solutions and enjoy collaborating across product, design, and engineering teams to deliver impactful results. I specialize in large language model apps, retrieval-augmented generation, LangChain, vector databases, and AI-powered workflows. I’m passionate about building robust architectures, observability, and user-friendly AI features for enterprise and startup environments, consistently delivering production-ready capabilities with a focus on quality and reliability.…Hi, I’m Derrek Williams. I’m a Senior AI Full Stack Engineer with 10+ years of experience building production-grade AI, SaaS, backend, and full-stack applications. I translate complex business needs into scalable, reliable software solutions and enjoy collaborating across product, design, and engineering teams to deliver impactful results. I specialize in large language model apps, retrieval-augmented generation, LangChain, vector databases, and AI-powered workflows. I’m passionate about building robust architectures, observability, and user-friendly AI features for enterprise and startup environments, consistently delivering production-ready capabilities with a focus on quality and reliability.

Derrek Williams

AI Engineer, Full Stack Developer, Back-End Developer, +2

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Hi, I’m Derrek Williams. I’m a Senior AI Full Stack Engineer with 10+ years of experience building production-grade AI, SaaS, backend, and full-stack applications. I translate complex business needs into scalable, reliable software solutions and enjoy collaborating across product, design, and engineering teams to deliver impactful results. I specialize in large language model apps, retrieval-augmented generation, LangChain, vector databases, and AI-powered workflows. I’m passionate about building robust architectures, observability, and user-friendly AI features for enterprise and startup environments, consistently delivering production-ready capabilities with a focus on quality and reliability.…Hi, I’m Derrek Williams. I’m a Senior AI Full Stack Engineer with 10+ years of experience building production-grade AI, SaaS, backend, and full-stack applications. I translate complex business needs into scalable, reliable software solutions and enjoy collaborating across product, design, and engineering teams to deliver impactful results. I specialize in large language model apps, retrieval-augmented generation, LangChain, vector databases, and AI-powered workflows. I’m passionate about building robust architectures, observability, and user-friendly AI features for enterprise and startup environments, consistently delivering production-ready capabilities with a focus on quality and reliability.

Available to hire

Hi, I’m Derrek Williams. I’m a Senior AI Full Stack Engineer with 10+ years of experience building production-grade AI, SaaS, backend, and full-stack applications. I translate complex business needs into scalable, reliable software solutions and enjoy collaborating across product, design, and engineering teams to deliver impactful results.

I specialize in large language model apps, retrieval-augmented generation, LangChain, vector databases, and AI-powered workflows. I’m passionate about building robust architectures, observability, and user-friendly AI features for enterprise and startup environments, consistently delivering production-ready capabilities with a focus on quality and reliability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior AI Backend Engineer / AI Full Stack Engineer at Tech Consulting Group

January 1, 2023 - Present

Built full-stack AI applications for client platforms, including semantic search, content generation, automation workflows, and enterprise knowledge assets; designed RAG pipelines, multi-agent orchestration, AI workflow automation, observability, evaluation pipelines, and production deployment; implemented scalable ML-powered capabilities with internal APIs, external data integrations, and data pipelines.

Software Engineer at Google

November 1, 2020 - November 1, 2022

Built backend systems supporting large-scale data processing, internal analytics, experimentation, and distributed workflows. Developed data ingestion and transformation services for high-volume product datasets. Used Google Cloud Platform services including BigQuery, Pub/Sub, and Cloud Functions to build scalable event-driven systems. Improved logging, monitoring, alerting, and observability to reduce production issue detection time and improve reliability. Supported experimentation and A/B testing in infrastructure, enabling data-driven product and engineering decisions. Designed APIs for internal teams and collaborated with cross-functional groups to improve system scalability and maintainability.

Full Stack Developer at Red Ventures

March 1, 2018 - October 1, 2020

Developed full-stack features and backend APIs for high-traffic consumer platforms in marketing, analytics, and digital product environments. Built microservices to improve system modularity, scalability, and maintainability; designed data pipelines and frontend components to support analytics and experimentation; integrated frontend and backend workflows to deliver data-driven user experiences.

Software Engineer at Accenture

January 1, 2017 - February 1, 2018

RAG Platform Architect at Independent / Freelance

July 1, 2012 - December 1, 2016

Built an enterprise-grade Retrieval-Augmented Generation platform for document-based question answering, semantic search, and internal knowledge retrieval. Designed ingestion pipelines for documents, embeddings, chunking, metadata extraction, and vector indexing. Implemented hybrid search, reranking, metadata filtering, and prompt grounding to reduce hallucinations and improve retrieval accuracy. Created backend APIs for document upload, indexing, retrieval, and LLM response generation. Implemented secure multi-tenant SaaS architecture with PostgreSQL, Supabase, and role-based access controls to support workspace-level permissions and data isolation.

Full Stack Engineer & AI Researcher at Tech Consulting Group

January 1, 2023 - Present

Built full-stack AI applications for client platforms including semantic search, content generation, automation workflows, enterprise knowledge assistants, and AI-powered user experiences. Designed and implemented LLM-powered systems using OpenAI, Anthropic Claude, LangChain, AWS, Supabase, and PostgreSQL to support business automation and production-ready features. Developed Retrieval-Augmented Generation pipelines with vector databases, embeddings, hybrid search, and metadata filtering; created multi-tenant SaaS architecture and backend APIs; improved output quality with robust testing and monitoring.

Software Engineer / Full Stack Developer at Red Ventures

March 1, 2018 - October 1, 2020

Developed full-stack features and backend APIs for high-traffic consumer platforms in marketing, analytics, and digital product environments. Built microservices using Node.js and Java, improving modularity, scalability, and deployment flexibility.

Software Engineer at Accenture

July 1, 2012 - December 1, 2016

Designed and implemented scalable REST APIs and backend services using Java, Spring Boot, Node.js, and MySQL. Built enterprise-grade features across backend services, business logic, data layers, and API integrations. Optimized database performance through SQL tuning, indexing, and query optimization. Helped transition monolithic applications into modular service-oriented architecture, improving maintainability and deployment flexibility. Collaborated with frontend, QA, product, and business teams in Agile/Scrum environments. Participated in code reviews, debugging, production support, and reliability improvements.