russell.ballestrini.net/content/pages/cover-letters/2025-11-30-coinbase-ai-growth-lead-staff-software-engineer-russell-ballestrini.rst

**Russell Ballestrini**

russell@unturf.com | 860-333-3047 | https://russell.ballestrini.net

November 30, 2025

**Coinbase**

**Re: AI Growth Lead (Staff Software Engineer)**

To the Coinbase Hiring Team:

Top 4 reasons my experience aligns with driving AI adoption across Coinbase's journey to becoming AI-Native by 2028:

**1. Applied AI & GenAI product development with real customer impact**: At Coursemojo (2022-2025), led development & scaling of an AI assistant teacher for 60,000+ public school students, integrating OpenAI & Anthropic APIs. Designed prompt engineering strategies for student assistance, classroom monitoring, & teacher feedback while ensuring AI safety. Built https://uncloseai.com, running community ML inference at scale for text, voice, TTS, & coding models. This hands-on experience building & deploying GenAI solutions for non-technical users directly translates to Coinbase's AI Growth Pod mission of partnering with Finance, HR, Legal, Operations, Marketing, & Security to identify, prototype, & scale high-impact AI automation.

**2. Internal consulting, technical leadership & driving adoption**: At Remind (2017-2020), led infrastructure for 60+ microservices supporting 30M users, collaborating across product, engineering, & operations teams. Introduced Datadog observability, authored technical documentation, & mentored engineers. Translated complex technical challenges into actionable solutions for non-engineering stakeholders. At Coursemojo, worked closely with educators to understand classroom workflows, identify pain points, & design AI features that fit seamlessly into daily operations. This experience partnering with diverse functions mirrors the AI Growth Lead role of working as an internal AI consultant across Coinbase's business units.

**3. Rapid prototyping, iteration & responsible AI practices**: Bootstrapped multiple production SaaS platforms from scratch (https://makepostsell.com, https://remarkbox.com, https://uncloseai.com, https://unsandbox.com) demonstrating ability to rapidly design, build, & iterate on functional prototypes. Built https://unsandbox.com with containerized isolation & security controls. At Coursemojo, implemented strict AI safety controls for student interactions. Proficient with LLM capabilities, limitations, & architectures (RAG, agents, fine-tuning). Hands-on experience with enterprise LLMs (OpenAI GPT-4, Anthropic Claude), Python, & agent frameworks. This prototyping speed combined with responsible AI mindset ensures I can quickly validate AI use cases while maintaining Coinbase's security, privacy, & ethical standards.

**4. Technical depth with staff-level business impact**: 15+ years software engineering experience with deep Python expertise, full-stack development (Node.js, React, TypeScript), & distributed systems architecture. Built production systems handling millions of requests (Remind: 30M users, Coursemojo: 60K students). Authored "uncloseai. Machine Learning Reference Guide to Inference Clients" covering streaming techniques & API design across 42 languages. Comfortable working at the intersection of technical execution & business strategy, translating business needs into AI solutions. This staff-level technical depth combined with business acumen enables me to design AI agents, custom copilots, & intelligent workflows that solve real operational challenges across Coinbase's diverse functions.

The opportunity to drive AI adoption at Coinbase as you transform into an AI-Native company combines cutting-edge technology with massive organizational impact. I'm excited to bring my applied AI expertise, internal consulting experience, & rapid prototyping capabilities to help Coinbase's teams unlock AI's potential across Finance, HR, Legal, Operations, Marketing, & Security.

Sincerely,

Russell Ballestrini