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  • Princeton University
  • Princeton, NJ · Kenya

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MeshacOkello/README.md

Meshack Okello

Computer science junior at Princeton, from Ng'iya, Kenya.

I like building the thing underneath the thing — a CPU you can single-step, a heap you can watch fragment, a kernel small enough to read in an afternoon. Most of what I make turns something invisible into something you can look at while it runs.

Incoming software engineering intern at Salesforce (Platform Cloud, summer 2027).

Things I've built
c-memory-visualizer Write C in the browser, press run, watch memory happen. Real execution under GDB in a locked-down Docker sandbox, streamed live over a WebSocket into a React memory map.
arm64-simulator An ARM64 CPU simulator with instruction decoding, a deterministic execution engine, and a live view of registers, stack, heap, BSS and rodata.
custom-os-kernel A monolithic x86 kernel in C and assembly: round-robin scheduling with priority queues, a buddy allocator, and a FAT-like filesystem.
latex-resume-builder Fill a form, watch pdflatex re-render the PDF beside it. Exports real .tex, and scores against a job description with local TF-IDF — no model in the loop.
incident-reporter-agent An AI agent that works a production incident: pulls deploys, commits and metrics from the alert, reasons about likely causes, posts a summary to Slack.
ledger Personal finance built on one idea — accounts hold money, goals reserve it. Two separate ledgers so the distinction can't be lost.

Also here: a memory allocator benchmarked against glibc malloc, a backend-under-load simulator, a calendar-driven site blocker, and perceptrons written from scratch in Java.

Outside the editor

  • Vice President, Equity Global Scholars Board at Princeton
  • Founded my high school's first computer science club in Kenya
  • Research on campus-as-a-living-lab sustainability practice with Princeton's Office of Sustainability
  • Archival research on historical segregation patterns in Wilmington, NC city directories

Working with

C C++ Assembly (ARM64, x86) Go Java Python TypeScript · React · Next.js · Node · Express · Prisma · Postgres · Supabase · Docker · GDB

Currently going deeper on machine learning and on the compiler and runtime side of systems. Happy to talk about any of it — meshomondiokello@gmail.com.

Pinned Loading

  1. arm64-simulator arm64-simulator Public

    A browser-based ARM64 (AArch64) CPU simulator — instruction decoding, a deterministic cycle-stepped execution engine, and a live view of registers, stack, heap, BSS and rodata.

    TypeScript

  2. c-memory-visualizer c-memory-visualizer Public

    Write C in the browser and watch memory as it happens — real execution under GDB in a locked-down Docker sandbox, streamed live to a React memory map.

    TypeScript

  3. custom-os-kernel custom-os-kernel Public

    A monolithic x86 OS kernel in C and assembly: round-robin scheduling with priority queues, a buddy allocator, and a FAT-like filesystem.

    C

  4. incident-reporter-agent incident-reporter-agent Public

    An AI agent that works a production incident: gathers deploys, commits and metrics from the alert, reasons about likely causes, and posts a clear summary to Slack.

    TypeScript

  5. latex-resume-builder latex-resume-builder Public

    A résumé builder that compiles real LaTeX: fill a structured form, watch pdflatex re-render the PDF live beside it, export .pdf or .tex — plus a local TF-IDF ATS match score with no AI involved.

    TypeScript

  6. ledger ledger Public

    Personal finance app built on one idea: accounts hold money, goals reserve it. Two separate ledgers in Next.js and Supabase so the distinction cannot be lost.

    TypeScript