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Jonathan SpruanceJS
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Jonathan Spruance

@jonathanspruance

Senior AI/backend engineer building agents, MCP, RAG & scalable platforms.

United States
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What I'm looking for

I am looking for a role that fosters innovation and collaboration, where I can leverage my AI expertise to create impactful solutions.

I’m a senior/staff software engineer specializing in production AI systems, backend platforms, and distributed systems. My recent work includes AI agents, Model Context Protocol (MCP), RAG and retrieval systems, LLM integrations, evaluation and observability, and the infrastructure required to run these systems reliably in production.

I work primarily with Python/FastAPI and TypeScript/Node.js, with deep experience across APIs, PostgreSQL, AWS, Kubernetes, CI/CD, and cloud-native architecture. I’ve led and contributed to enterprise AI platforms, agentic workflows, developer infrastructure, and large-scale backend systems across both startups and major technology organizations.

I’m especially interested in senior/staff engineering roles involving AI platforms, agents, backend systems, developer infrastructure, or applied AI products. I’m also open to long-term contract and fractional engineering engagements with globally distributed teams.

Experience

Work history, roles, and key accomplishments

GP
Current

Senior Software Engineer - AI Platform

G-P (Globalization Partners)

Oct 2024 - Present (1 year 11 months)

Developed a sophisticated AI-powered chatbot platform serving enterprise clients, architecting and implementing the core reasoning engine that processes user queries daily. Built the foundational AI reasoning engine (GiaCore) using Python, designing a modular chain-based architecture that orchestrates ChatGPT API calls, knowledge retrieval, and tool execution for complex enterprise workflows.

CO
Current

AI-Powered Cover Letter Generator

CoverSnap

May 2024 - Present (2 years 4 months)

Built and launched CoverSnap.app, a micro SaaS tool that uses GPT-4 to generate tailored cover letters from job descriptions and resume input. Designed a mobile-first, no-login UX with tone/length filters and Stripe-powered lifetime unlock via email magic link.

DG

Senior Software Engineer

Dome Global

Oct 2022 - Present (3 years 11 months)

At a PaaS startup, worked with TypeScript, JavaScript, ReactJS, NodeJS, Go, and Kubernetes—solving complex technical challenges through research, collaboration, and hands-on coding alongside founders and fellow engineers. Designed, built, and shipped core platform components for the MVP, including CI/CD pipelines using Go and Kubernetes.

NE

Senior Full-Stack Software Engineer

Netvrk

Jan 2021 - Present (5 years 8 months)

Built NFT marketplace dApp using Typescript / Javascript, ReactJS, & Redux. Developed REST API using NodeJS / Express. Created Netvrk NFT marketplace smart contract using Solidity and UI, using ReactJS.

WT

Senior Software Engineer

WarnerMedia (IDC Technologies)

Feb 2020 - Present (6 years 7 months)

Architected, built and shipped a feature flagging framework, used on CNN.com and other high-traffic WM properties using NodeJS / Typescript / Javascript, AWS Lambda. Built feature flagging admin portal using ReactJS / NextJS & Redux.

MG

Senior Software Engineer

Microsoft (Insight Global)

Apr 2019 - Present (7 years 5 months)

Lead engineer on the Microsoft Bot Framework NodeJS SDK, contributing to one of the foundational toolkits for building AI-powered conversational experiences. Developed core SDK features enabling natural language interaction and multimodal AI responses across messaging platforms.

TG

Senior Software Engineer

The Walt Disney Company (Insight Global)

Nov 2017 - Present (8 years 10 months)

Full stack software engineer on Disney Cloud Engineering team working on REST microservices for AWS cloud platform, NodeJS microservices, Typescript Lambdas as well as UI development.

AT

Senior Software Engineer (Lead)

AT&T

Jan 2013 - Present (13 years 8 months)

Lead full stack software engineer on several large-scale projects including, AT&T ecommerce web application, NodeJS reverse-proxy layer for in-memory caching layer, POCs and much more. Other responsibilities included interviewing candidates, conducting code reviews, and mentoring new developers.

AM

Full Stack Engineer

Amazon

Jul 2010 - Present (16 years 2 months)

Fullstack engineer doing feature development on Amazon PaaS platforms using Javascript, REST, AngularJS, CSS, and Java. Shipped features for Amazon platform clients such as Target.com.

Education

Degrees, certifications, and relevant coursework

University of California, Berkeley logoUB

University of California, Berkeley

Professional Certificate, Blockchain Fundamentals

Completed the Blockchain Fundamentals Professional Certificate program, gaining in-depth knowledge of blockchain technology and its applications. This program provided a strong foundation in the core concepts of decentralized systems.

University of Cambridge logoUC

University of Cambridge

CELTA Certificate, English Language Teaching

Obtained the CELTA Certificate, a highly recognized qualification for teaching English as a foreign language. This certification involved intensive training in teaching methodologies and practical classroom experience.

Florida State University logoFU

Florida State University

Bachelor Degree, Russian Language

Earned a Bachelor's Degree in Russian Language, focusing on linguistic studies, literature, and cultural aspects. This program developed strong analytical and communication skills.

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