Esteban Chirinos

Technical Services Engineer at Coinbase building the demos, reference implementations, docs, and onboarding systems that help developers ship faster.

Previously at TRM Labs, Polygon Labs, OpenSea, Google, Microsoft, and JPMorgan Chase across developer platforms, cloud, fintech, partner solutions, and operator systems.

Applied AI ArchitectDeveloper ExperienceDemo EngineeringAI DeploymentPartner Solutions

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Modern portfolio

Applied AI, DevEx, and customer-facing engineering.

Best fit

Applied AI ArchitectDeveloper ExperienceDemo EngineeringAI DeploymentPartner Solutions

Companies shipped at

2,000+

Monthly demo users

40+

Integration solutions delivered

Companies shipped at

2,000+

Monthly demo users

40+

Integration solutions delivered

Founder project acquired

Places I have worked

Developer platforms, cloud, fintech, marketplaces, and financial services.

Full work history

Coinbase

Technical Services Engineer • March 2024 - Present

Technical onboarding and implementation support for Coinbase Developer Platform customers building with APIs, SDKs, wallets, payments, and onchain workflows.

CDP APIsSDKsOnchain apps

Lead technical onboarding for developers and enterprise teams integrating CDP APIs and SDKs.

Design integration architectures, demo paths, and best-practice guidance for scalable onchain applications.

Write docs, runbooks, and reference implementations across TypeScript, Python, Java, and C#.

TRM Labs

Staff Solutions Architect • June 2023 - February 2024

Designed and rolled out API integrations for financial institutions and government agencies, including custom solutions, discovery sessions, and dashboard tooling.

API integrationsDiscoveryDashboards

Delivered 40+ custom API integration solutions for regulated customers.

Ran 60+ technical discovery sessions to align platform capabilities with client needs.

Built 10+ dashboard tools and improved reference patterns for stronger CSAT.

Polygon Labs

Solutions Engineer • August 2022 - February 2023

Built web3 proof-of-concepts, reference implementations, and partner solution designs across entertainment, DeFi, and NFT use cases.

POCsWeb3Partner engineering

Built and shipped web3 solutions for entertainment, DeFi, and NFT clients.

Standardized operations for a 12-person solutions engineering team.

Created prospect and partner demos in Next.js and JavaScript.

OpenSea

Developer Relations Engineer / Product • January 2022 - July 2022

Owned developer docs, sample code, partner engineering, API feedback loops, and support automation for marketplace developers.

DocsDevRelAPI feedback

Owned developer-facing docs, code samples, and partner engineering support.

Prioritized 100+ developer feature requests for the OpenSea API and SDK.

Built API key distribution and support automation systems that improved NPS.

Google

Technical Account Manager

Supported cloud architecture and customer success for strategic accounts, including migration planning, technical enablement, and account health.

Microsoft

Software Engineering Intern

Built an Azure Cloud Supply Chain telemetry application to help internal teams monitor and reason about operational data.

JPMorgan Chase

Software Engineering Intern

Built a React, Spring Boot, and PostgreSQL application for investment banking workflows and internal productivity.

What I have built

Reference apps, tutorials, founder products, and operator systems with real users and operators behind them.

View all projects

Developer tooling

Coinbase Onramp Demo App

A developer-facing reference app for fiat-to-crypto conversion flows, now serving 2,000+ users each month.

Reference appDevEx2,000+ users/month

Open project

Developer tooling

Coinbase Onramp Asset Checker

A visual country and state eligibility checker built to reduce integration uncertainty for developers implementing Onramp.

API workflowsCustomer enablementDeveloper tool

Open project

Developer education

NFT Deployment Application

A CDP SDK and Pinata workflow for deploying NFTs across networks, packaged as practical technical documentation.

Reference implementationDocsSDK

Open project

Applied AI / web3

Creator Tip Application

A decentralized tipping app built with Next.js and OnchainKit that lets users support creators with crypto payments on Base.

Next.jsOnchainKitPayments

Open project

Founder product

True Rank Pickleball

A rating product built from zero to acquisition, including ranking logic and operator workflows.

AcquiredConsumer productFounder project

Open project

How I work

I sit between product, engineering, customers, and go-to-market teams. The output is usually a clearer demo, a better integration path, a cleaner technical story, or a faster deployment.

Applied AI demosAPI architectureReference appsDeveloper docsTechnical discoveryCustomer enablementSolutions engineeringProduct feedback loops

Best for recruiting and role conversations.

Open LinkedIn

GitHub

Code samples, experiments, and reference work.

Open GitHub

Blog

Writing on work, systems, and product thinking.

Open Blog

Tech stack