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// SYSTEM ONLINE

Sara Demo

Software engineer · ML & web platforms

~ Building tools that compound — small interfaces over deep systems.

about.md

A bit of context.

Sara is a software engineer who likes the boring half of engineering: clean APIs, fast tests, and observability you can act on. She's worked on ML platforms, payments infra, and the occasional indie game. Currently exploring what AI assistants should never do for you.

work-history

Where I've shipped.

Software Engineer, Platform @ Linnea AI

Feb. 1, 2024 → now :: Remote

Building the eval platform — dataset versioning, run diffing, and a CLI good enough that researchers stopped writing their own scripts.

PythonPostgresKafkaTypeScript

Backend Engineer @ Mango Pay

July 1, 2023 → Jan. 31, 2024 :: Karachi, PK

Owned the merchant-onboarding flow end-to-end; cut KYC median from 6h to 38m via async webhooks + retry policy.

GoPostgresRedis

projects

Things I built.

$ scratchnet[FEATURED]

Tiny autograd + MLP from scratch in 700 LOC of Python.

Built to teach myself the maths. Trains MNIST in under two minutes on CPU. The tape-based gradient bookkeeping is what most surprised me.

PythonNumPy
→ source

$ kaftaa[FEATURED]

Kafka log inspector for humans — one keystroke per task.

TUI for browsing topics, filtering by header, and replaying ranges. Ergonomics over feature count.

RustRatatui
→ source

$ feed-by-rss

Replace your social feeds with a curated RSS reader.

Web app + CLI to subscribe by topic, dedup across sources, and surface posts an LLM thinks you'd actually click. The LLM is wrong half the time, which I find informative.

TypeScriptSQLiteOpenAI
→ source → live

stack

The toolbox.

PostgreSQL Redis React Kafka Docker Python TypeScript Go Rust PyTorch

edu

School days.

National University of Computer Science

B.S. Computer Science :: Machine Learning concentration :: 3.86 / 4.0

Sept. 1, 2019 → June 1, 2023

Senior thesis on robust active-learning under label noise. TA'd Algorithms II for two semesters.

certs

Receipts.

AWS Certified Solutions Architect — Associate

Amazon Web Services :: April 12, 2024

→ verify

Deep Learning Specialization

DeepLearning.AI :: Jan. 6, 2023

→ verify