About MeView Resume

Software, systems, and
technology leadership.

I write about software, AI tools, leadership, and the tradeoffs that show up when systems meet real people. This site is the personal archive for that work.

For productized AI services, Bob, Alice, patronage, and the skills catalog, visit Atelier at elier.ai.

John Nelson

Background & Experience

A track record of building software and leading technical teams

Senior Full Stack Engineer

at Calendly
Jan 2025 - Present
  • Owned revenue-impacting Growth initiatives across frontend + backend for the category-leading scheduling product
  • Shipped experiments driving more than $1 million in ACV in 2025; improved instrumentation and analysis workflows to reduce iteration time from weeks to days
  • Drove organization-wide AI adoption (+100% usage) through internal talks, enablement, and building foundational tooling and integrations
  • Built AI tooling and infrastructure to support development with Cursor, enabling capability discovery and impoved DX
  • Led rollout safety, observability, and reliability improvements; helped my team maintain a 6-month stretch with 0 customer-impacting incidents

Lead Frontend Engineer

at Pipedream
Dec 2021 - Dec 2024
  • Led frontend engineering for a developer automation platform used by hundreds of thousands of developers; mentored and led execution across a team of 5
  • Project lead for growth-driving initiatives across core workflow-building experiences (editor, debugging, core UX), helping drive product adoption growth by >30%
  • Drove frontend architecture and platform quality, raising the bar for reliability and long-term maintainability
  • Reduced user friction and support burden by simplifying key UX flows and strengthening workflow-building ergonomics

Fractional CTO

at Voiz Academy
Jan 2024 - Jan 2025 (fractional, concurrent)
  • Led the transformation from Notion-based workflows into a production SaaS, shipping a production MVP and migrating core operational workflows into the platform
  • Built automations that replaced manual ops with reliable workflows (enrollment, provisioning, notifications, and lifecycle management)
  • Architected the system to scale operationally and technically, enabling the business to service 1,000+ users
  • Established engineering foundations end-to-end (CI/CD, observability, security, product analytics) to enable faster iteration and safer releases
  • Hired and led an engineering team of 4, setting technical direction and sustainable processes for long-term execution
  • Recruited and hired the next CTO to scale the engineering organization and lead the next phase of the product

Lead Frontend Engineer

at Batch.sh (YC W20)
Oct 2020 - Dec 2021
  • Led frontend development for an early-stage cloud infrastructure and deployment platform (YC W20), owning core product UX end-to-end
  • Built the website, web app, and Electron desktop app in TypeScript, all interfacing with the same backend/API surface (gRPC + Go + Kafka)
  • Designed and shipped interfaces for provisioning, deployments, and pipeline management, turning complex infrastructure workflows into a usable self-serve experience
  • Partnered closely with backend and infrastructure teams to align product requirements with system constraints and deliver reliable, operator-friendly workflows

Senior Software Engineer

at Charm.io
Apr 2020 - Dec 2020
  • Designed and implemented an enterprise ETL and enrichment pipeline for a handful of key customers, enriching company and account data at scale
  • Built scalable data processing workflows (Kafka + Node.js) handling millions of records daily, with a focus on correctness, idempotency, and operability
  • Provided senior technical leadership during a critical transition period, stabilizing systems and helping the team ship reliably

Senior Salesforce Engineer

at Clearbit
Feb 2018 - Apr 2020
  • Owned Clearbit's Salesforce Integration suite end-to-end; a core revenue-driving product with deep customer impact
  • Modernized legacy CoffeeScript applications into a stable React + TypeScript codebase, improving developer velocity and driving production issues to effectively zero
  • Rebuilt key surfaces as Salesforce Lightning Web Components, improving UX/performance and setting a new technical direction for the product

Software Engineer Consultant

at Carbon Five
Jun 2017 - Jan 2018
  • Built enterprise marketing applications for Gap using Angular, TypeScript, and RxJS
  • Designed and implemented Kafka-backed integrations with Java warehouse and inventory management systems
  • Delivered systems supporting large-scale distribution and logistics operations, partnering closely with stakeholders across product and engineering

Salesforce Developer Consultant

at CodeScience, Inc.
Apr 2015 - May 2017
  • Delivered 20+ client projects specializing in frontend application integrations (Angular + React) across complex Salesforce orgs
  • Championed TypeScript adoption across the company, establishing standards and shared tooling to improve developer velocity and maintainability
  • Developed developer tooling to improve workflow efficiency, cutting common setup/deploy tasks from hours to minutes
  • Created ForceCode, a VSCode extension with 50k+ installs, improving end-to-end Salesforce developer workflows
  • Salesforce Certified Platform Developer

Application Developer

at WDD Software Solutions
Jan 2015 - Mar 2015
  • Delivered a site security management platform end-to-end (from requirements to production) in under three months
  • Built with AngularJS and BreezeJS; deployed on Azure
  • Worked directly with stakeholders to iterate quickly, ship to production, and hand off a maintainable system

Web Developer

at HealthCare Strategies, Inc
2004 - 2014
  • Progressed from system administrator to web developer, building and owning an ASP.NET MVC internal operations platform
  • Developed a departmental application that increased revenue 5x in 12 months and expanded into a company-wide system supporting more than 100 internal users
  • Platform remained the primary internal system for 10+ years (still in production 12+ years later), reducing operational effort by more than 50% while improving auditability/compliance
  • Microsoft Certified Professional

Areas of Expertise

Technical ground I return to in writing and work

AI Platform StrategyGenerative AI & Agent DesignAI Integration & OperationalizationAI/ML InfrastructureMCP Server DevelopmentFull Stack EngineeringFrontend ArchitectureReact & TypeScriptGrowth Engineering & ExperimentationDeveloper Tools & PlatformsTechnical LeadershipPlatform ModernizationCRM Platform IntegrationsEngineering Hiring & Team Building

How I work.

I won't oversell.

If we have a 30-minute conversation and the answer is “you don't need me,” I'll say so. Most small businesses don't need an enterprise stack — they need someone honest about what they actually need.

Boring tools, on purpose.

I'll recommend the cheap, well-understood option over the impressive one. Most small businesses don't need an enterprise observability stack or a microservices architecture. Use boring tools until you actually need otherwise.

Real people, even with AI.

AI is a force multiplier, not a replacement for taste, judgment, or responsibility. I write about the boundary between automation and accountable human work.

Get in Touch

If you want to talk about writing, technology leadership, software systems, or the work on this site, I'd be glad to hear from you.

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