Hands-on full-stack developer available for consultation and contribution. Serving as principal, collaborating or contributing engineer, or consultative leader. Experience and perspective with management-level considerations for engineering, product and organizational effectiveness, available on request. Please reach out for an initial consultation about your needs.Deep experience with many areas of tech stack, including databases, data services, distributing computing, software application infrastructure; application scalability, security and architectural software design, test automation & reliability engineering, accounting systems, and UI development; cryptography and information security background. Blockchain experience on Cardano (EUTXO) tech stack, including tokenomics design and support of software lifecycle practices in the "immutable" blockchain environment. Management-level familiarity (not IC expertise) with network design & architecture, routing & firewall, UX and visual design, data-warehouse infrastructure engineering, ETL pipelines, penetration testing. Interested and active in emerging practical and effective application of AI, including AI+human collaboration (e.g. Copilot, for coders) and domain-specific use-cases. Practitioner of social methods of governance & collaborative management for effectiveness for multi-faceted outcomes, promoting clarity of shared meaning and shared purpose where they meet value-creation. Agile practices, Requirements management and collaboration with product management are a few particular areas where these practices show up.

A senior member in a team of 5, grown to 25+ developers, creating and operating API's and web applications for configuration and reporting of world-scale advertising systems. Hands on with Javascript, Mysql, React, Node.js, Ruby on Rails. Evolved role toward technical program management, serving matrixed organization for aligned execution (see below for more). Managed continuous integration, release-automation, operations and reliability.Championed and led initiatives in areas of test automation (test-driven dojo), database optimization, accounting and billing automation workflow automation (monthly billing cycle down from >40 to 7 days, revenue from 1.5m to 12+ million monthly), engineering- and product-requirements management, SOX-compliance certification, and revenue-projections from active advertising systems. Served during scale-up and post-IPO phases.

Research and development of features in accounting software supporting thousands of small businesses. Developed Quicken-like UI for transaction ledger. Designed and implemented full-text search with Apache Solr for finance transactions. Created UI, API's and back-end processing for electronic filing of 1099's with Internal Revenue Service.

Managed requirements and backlogs, designed products and managed software project delivery for multiple clientsExample: For Stanford University's patent office, interviewed experts, developed requirements and developed interaction designs for an application helping their many inventors follow best practices and effective workflows for their patent-research process, delivering practical efficiencies for their technology-licensing program.

Provided clients with effective solutions for business-process management, production control, receivables, general accounting, document management and other automation. Analyzed customer requirements, designed application-software and workflow solutions, led small team implementing and managing operations for those systems.Data-management consulting and application software development on DOS, Windows, Novell, OS/2, Citrix, Solaris, HP/UX and Linux, using dBase, Foxbase, Clarion, Perl, Mysql, Apache and Ruby on Rails and other open-source software.

Software development, data warehouse designer. Technical project lead for metrics-driven product-improvement analysis systems. Designed and implemented distributed computing infrastructure for high-volume data analysis. A/B-test analytics infrastructure and SEO reporting for ~80% of Yahoo's US and international businesses.Implemented and deployed SEO data-extraction module to production web servers for most of Yahoo's US and international properties including Search, Shopping, Travel, Sports and more.