Selected work

Examples of backend-heavy product work, ownership, and reliability-focused execution.

These are the strongest public-safe examples of the kind of work I am usually most useful for: business-critical systems, messy backend areas, migrations, performance work, and product logic that cannot be treated casually.

MindLog

Founder & Primary Engineer · Product ownership across backend, infrastructure, billing, and supporting systems

  • Built and continue to run the core product architecture, REST API, database, SPA, CI/CD workflows, and supporting services.
  • Executed a high-risk infrastructure and domain migration with controlled cutover planning to protect live user data and reduce downtime.
  • Designed layered defenses against sustained brute-force attacks, including rate limiting, IP-based controls, 2FA, session awareness, and proof-of-work captcha.
  • Built and evolved billing flows with safe auto-renewal, plan switching, proportional refunds, and automated receipt handling.

Go mobile backend

Primary backend owner for a mobile product in the meditation / affirmations space

  • Handled business-logic-heavy backend work rather than simple transport, including streak and recovery logic for a tree-growth mechanic.
  • Reduced a slow dashboard flow from 20+ seconds to around 1 second through caching and SQL-level improvements in a GraphQL-heavy path.
  • Worked through subscription-related backend issues, timezone normalization, scheduled push logic, and multilingual email templating.
  • Coordinated backend behavior with mobile engineers, DevOps, and adjacent services.

Call-center CRM

Long-running backend responsibility with redesign and PostgreSQL-heavy improvement work

  • Took ownership of a fragile bonus-calculation subsystem with poor legacy architecture and recurring correctness problems.
  • Reworked the design around raw data preservation and safe recalculation, making recovery possible and reducing the risk of irreversible issues.
  • Improved PostgreSQL-heavy reporting and calculations through query cleanup, indexing, and more advanced SQL work.
  • Worked on reliability and maintainability, not just feature delivery.

Statistics and push microservices

Parallel ownership of supporting services within a larger product area

  • Maintained multiple supporting backend services in parallel with CRM responsibilities.
  • Worked with event collection and aggregation flows, where one service stored raw data and another aggregated it for downstream consumers.
  • Maintained integrations and SDK support across both PHP and Go ecosystems.

Earlier ownership background

Long-term end-to-end product responsibility was present early in my career as well

  • Built and evolved a custom booking-like platform from the ground up with long-term ownership across backend, frontend, infrastructure, admin workflows, partner tools, and customer-facing functionality.
  • Worked on internal backend systems, auditing, optimization, and architecture changes across several earlier roles.

More detail

For a structured background summary, see the resume. For collaboration format and fit, see work with me.