# Haseeb Annadamban - Canonical: https://haseebeqx.com/ Haseeb Annadamban · Ruby on Rails expert # I help with*Ruby on Rails* I help SaaS teams resolve performance bottlenecks, improve established Rails applications, and ship practical AI features. Ten years of production experience, backed by client results and merged contributions to projects like Gumroad, Discourse, and OpenProject. **My performance work is inspectable, not just promised.** The case studies show the queries, benchmarks, regression tests, pull requests, and client outcomes behind the results—with production engagements clearly distinguished from open-source contributions. [Discuss your project →](/contact-me/) [See recent results ↓](#latest-case-studies) Available for remote consulting and contract work Engineering track record 2016—now **10+** years shipping production software **90%+** dashboard load-time reduction **1M+** users on a SaaS product served **Merged** **upstream** Gumroad · Discourse OpenProject Production experience, client outcomes, and maintainer-reviewed open-source contributions. See the case studies below for measurements and scope. Rails & PostgreSQL*✦* AI-assisted workflows*✦* Integrations*✦* Performance*✦* Agent tooling*✦* Legacy systems*✦* Production engineering 01 **Open-source performance improvements** Merged upstream ## Real codebases. *Reviewable results.* Performance fixes for Gumroad, Discourse, and OpenProject: measured bottlenecks, regression tests, and changes reviewed and merged by maintainers. This is open-source contribution work, not a claim that these projects are clients. Gumroad · Open-source contribution ### [103 SQL events reduced to 23.](/case-studies/gumroad-products-api-n-plus-one/) Co-authored a Products API batch-loading fix. Mean request duration fell 40.4% in a ten-product benchmark, while preserving the response contract. [Read the measurements →](/case-studies/gumroad-products-api-n-plus-one/) [View merged pull request ↗](https://github.com/antiwork/gumroad/pull/7506) Discourse · Open-source contribution ### [66.5% faster active-user requests.](/case-studies/discourse-admin-active-users-2fa-n-plus-one/) Replaced per-user two-factor authentication checks with two batched queries. Measured locally in production mode with 75 active users and empty 2FA data. [Read the measurements →](/case-studies/discourse-admin-active-users-2fa-n-plus-one/) [View merged pull request ↗](https://github.com/discourse/discourse/pull/43027) OpenProject · Open-source contribution ### [762 repeated queries eliminated.](/case-studies/openproject-work-packages-type-variant-n-plus-one/) Removed repeated type-variant lookups from the Work Packages API. Median server duration fell 55.7% in the documented benchmark. [Read the measurements →](/case-studies/openproject-work-packages-type-variant-n-plus-one/) [View merged pull request ↗](https://github.com/opf/openproject/pull/24894) Benchmark results describe the workloads documented in each case study, not measured changes to these projects’ live production traffic. Your application’s results will depend on its own bottlenecks. [Explore all case studies →](/case-studies/) 02 **Latest case studies** Problems, approach, results ## Recent work. *Results in context.* The latest detailed accounts of performance problems, the engineering approach used to address them, and the measured outcome. Learn To Be · Client work ### [Building an Anki inspired math and reading practice app](/case-studies/ltb-cards-fsrs-learning-platform/) A client product build for Learn To Be: a focused Rails application that turns adaptive spaced repetition, reusable card templates, and phonics-aware content into a simple daily study flow. [View case study →](/case-studies/ltb-cards-fsrs-learning-platform/) Forem · Open source ### [Reducing role queries across Forem’s role-heavy paths](/case-studies/forem-repeated-role-queries/) An open source Rails performance optimization that made role checks association-aware across Forem’s admin member list, CSV export, async user payload, and reCAPTCHA service. [View case study →](/case-studies/forem-repeated-role-queries/) Forem · Open source ### [Making Forem’s cold analytics backfill 10× faster](/case-studies/forem-analytics-activity-bulk-backfill/) An open source Rails performance optimization that replaced per-article analytics recomputation with bulk SQL aggregation, cutting median backfill time by 90.1%. [View case study →](/case-studies/forem-analytics-activity-bulk-backfill/) [View all case studies →](/case-studies/) 03 **Services** Focused engagements ## Expert engineering for *the work that matters.* Choose the service that matches the problem in front of you—from Rails performance and modernization to AI integration for an existing SaaS product. [**01** Rails · Performance **Performance optimization** \ Find production bottlenecks, implement high-impact fixes, and validate them against a measured baseline. \ Explore service *↗*](/services/rails-performance-optimization/) [**02** Rails · Modernization **Legacy modernization** \ Upgrade aging Rails systems incrementally while keeping the product stable and available. \ Explore service *↗*](/services/legacy-rails-modernization/) [**03** Rails · Engineering **Rails consulting** \ Bring expert, hands-on engineering to difficult delivery, architecture, and integration work. \ Explore service *↗*](/services/rails-consulting/) [**04** AI · SaaS **AI integration services** \ Add useful AI capabilities to an existing SaaS application and its connected workflows. \ Explore service *↗*](/services/ai-integration-services/) [Compare all services →](/services/) Not sure where to start? The initial fit discussion is free. We’ll clarify the problem, available access, and scope before any paid work begins. 04 **Production work** ## Software people rely on. *Work clients can trust.* Beyond open source, I have delivered production work across education, compliance, and SaaS—from faster dashboards to integrations and infrastructure upgrades. Nonprofit education platform ### Learning tools with a human outcome. Built spaced-repetition, pronunciation, and reading tools for a nonprofit serving underserved students—including work families credited with improving their children’s grades. Product engineering · Applied AI Financial compliance platform ### Complex workflows made operational. Built employee-compliance and vendor-due-diligence systems, plus meeting transcription across Google Meet, Zoom, and Microsoft Teams. Workflow systems · Integrations SEO automation product ### From more than two seconds to under 200ms. Cut dashboard load time by over 90%, removed crawler memory bloat, and improved sitemap processing speed and worker reliability. [Read the production case study](/case-studies/rails-saas-performance-security-hardening/). Rails · PostgreSQL · Performance Large-scale SaaS platform ### Core product work at million-user scale. Improved page speed, rebuilt a CMS rendering system, raised SEO performance, upgraded critical infrastructure, and delivered new integrations. Architecture · Modernization 05 **Testimonials** Client perspective ## What clients say. *In their own words.* Feedback from founders who have trusted me with their products, workflows, and production systems. “ > Haseeb combines strong technical experience with good product judgment, takes ownership, and moves quickly even when requirements are ambiguous. Haseeb doesn't just write code, he understands the problem and ships reliable solutions. I'd gladly recommend him to any team looking for an experienced engineer who can make a good impact **Glenn Espinosa** CEO · Luthor (YC F24) “ > Haseeb played an important role in building and scaling Interlynk’s backend during a time when the software supply chain and SBOM ecosystem was still evolving. With few established patterns to follow, he was comfortable navigating ambiguity, studying specifications such as SPDX, and translating complex requirements into practical product capabilities. He contributed across performance optimization, PostgreSQL-heavy data workflows and more. Haseeb consistently approached complex technical problems with curiosity and ownership, helping us build reliable solutions in a challenging and emerging domain. **Ritesh Noronha** Co-Founder and CTO · Interlynk “ > My biggest concern with contractors now is whether they can come in and use AI to be more productive. I'm no longer interested in developers who want to code by hand. I want developers who know how to code, of course. But I want devs who can use that software experience to leverage AI to be more productive. Haseeb is that. He came on and was immediately able to leverage the tools available to build stuff for us at least 2x faster. He's a joy to work with! **Neeraj Kapoor** Founder · learntobe.org ← → 06 **AI work in public** ## AI-assisted delivery. *Engineering discipline included.* I use AI to accelerate the work, not to skip understanding or validation. My open-source tools show how I build repeatable workflows with verifiable outputs, approval gates, and documented handoffs. These are public engineering projects, not claimed client deployments. [01 / Skill + case study ↗ \ **reddit-pain-** **research-skill** \ A multi-stage customer-research method packaged as a reusable skill with sourced evidence, structured artifacts, validation scripts, and an approval checkpoint.](https://github.com/haseebeqx/reddit-pain-research-skill) [Read the article →](/posts/replaced-a-complex-reddit-research-agent-with-skill/) [GitHub ↗](https://github.com/haseebeqx/reddit-pain-research-skill) [02 / Open-source tooling ↗ \ **pi-runbooks** \ Turns repeatable agent work into versioned runbooks with approval gates, checkpoints, output verification, and evidence-based revisions. \ TypeScript · Workflow governance · Pi](https://github.com/haseebeqx/pi-runbooks) [03 / Open-source deployment ↗ \ **pi-ship** \ Deploys Pi to SSH-accessible Linux servers for terminal, Telegram, or Slack access without public ports, TLS, webhooks, or manual setup. \ TypeScript · Linux · Remote agents](https://github.com/haseebeqx/pi-ship) [See all projects on GitHub ↗](https://github.com/haseebeqx) ![Haseeb Annadamban](/images/haseebeqx_300x342.webp) 07 **Engineering perspective** ## Expert judgment. Hands-on delivery. I work directly with founders and engineering teams to understand unfamiliar systems, make the trade-offs explicit, and deliver reviewable changes. Rails and PostgreSQL are my deepest stack; Python and TypeScript support my AI and workflow tooling. Based in Kerala, India, I work remotely with international clients. Founders and technical leaders at Luthor, Interlynk, and Learn To Be describe my ownership, product judgment, and delivery in their [client testimonials](#testimonials). [More about my background →](/about/) Focused engagements · Expert contract engineering ## What is slowing *your product down?* Tell me what is happening, why it matters, and your timeline. We’ll identify a sensible first engagement before committing to implementation. [Discuss your project ↗](/contact-me/)