Sahil Mangla

Merged into PyTorch AutoGPT

Open to remote roles sahilmangla.official@gmail.com

Merged into PyTorch and AutoGPT.

I hunt correctness bugs in code other people depend on.

Write to me Read the PyTorch fix

One PyTorch bug, taken apart

On Apple GPUs, torch.nextafter returned bfloat16 inputs unchanged. I rewrote it as a step on the raw bits.

Merged , PR 190481

Ask for the next number up. The old code hands back the same number; the fix moves one step. Press Step to see it.

Before my fix

1

0x3F80

After my fix

1

0x3F80

Start at

Step 0

One bfloat16 step is 65,536 float32 steps wide.

Fixed it. Built it.

  • AutoGPT

    Blank schedule names crashed the backend.

    Merged

  • codebase-memory-mcp

    Cut 2,056 false call edges in a benchmark.

    Merged

  • Atlas

    Idea to architecture, each stage approved.

    22 of 22 evals

  • TraffiTwin AI

    Rebuilds dead traffic-sensor speeds, 6.0% error against a 28.1% baseline.

    Live demo

  • PayPact

    Policy gate for AI agent payments.

    217 tests

  • health-policy-agent

    Policy answers checked against clauses.

    265+ tests

What I take on

Open to remote roles in backend and ML systems. Send me the bug nobody can explain.

Write to me See my GitHub

Correctness fixes

Trace a wrong result to its cause, then fix it with a small change and a test. Merged into PyTorch and AutoGPT.

Backend services

Python and FastAPI services on PostgreSQL, tested as I build. PayPact has 217 backend tests.

AI and ML systems

Forecasting models and LLM agents, measured rather than assumed. TraffiTwin reaches 6.0% error on METR‑LA against 28.1% for the historical average.

Evaluation suites

Benchmarks checked against a stored baseline, so a regression fails loudly. Atlas passes 22 of 22 eval tasks, run with a local model.

Database engineering

Audit logging, backup verification and health monitoring on PostgreSQL and SQL Server, built as a database intern at DCM Infotech.

Honest status

I say what is done, what is still in progress, and what did not work.

Tools I reach for

Languages
PythonC++JavaScriptSQL
Backend
FastAPIREST APIsNext.js
Databases
PostgreSQLSQL ServerOraclePL/pgSQL
ML and data
LightGBMscikit-learnMLflow
Tooling
DockerGitGitHub Actions