Mahmoud Galal aka krokingSenior Backend / Platform EngineerSenior Backend / Platform Engineer with a founding-engineer mindset. I take backend architecture end-to-end: the RFC, the schema, the queues, the Terraform, the on-call runbook.
Most of my work lives where money, security and scale meet — payment reconciliation, secrets rotation, multi-tenant integration hubs, event-driven order systems.
I optimise for cost as much as latency. Cutting a cloud bill 40% and cutting p99 35% are the same kind of work.
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Six tracks × every month since 2023. Hover a cell, click a month, filter by employer.
Read the detail →Heat is derived, not decorative: each cell sums how hard a track was exercised by every role running that month, plus a point for anything that shipped. Overlaps burn hotter because they were.
Fetched in your browser, not baked at build time.
Each one links to the role it came from.
Pick a domain to narrow the stack, or a technology to see where it was used.
Architect · Team lead
Architected CRCL and led a team of four to build it. I owned the core API — ticketing, event lifecycle, payments — and the decisions underneath it.
A preprocessor for your inbox — allowlists, paywalls, spam
Same mailbox, a much quieter inbox. hi.new sits in front of your email with allowlists, paywalls and spam filtering. It reached #3 Product of the Day on Product Hunt.
Architect
Designed from a blank page: stack choice, infrastructure, cost model, and the team that kept it running. Serves the MENA region at six figures of monthly readership.
Mentoring platform, architecture to production
Built a mentoring platform for a client from architecture through to production and handover.