Software Engineer — Backend & Full-Stack | Python · FastAPI · AWS Serverless

github

Ashish Kosana  • Peerlist

Retrieval-augmented Q&A over documents (ChromaDB → cited Claude answers) with a dual evaluation harness scoring retrieval (hit@k, MRR) and answer quality (LLM-as-judge) separately, plus abstention testing. FastAPI, 19 tests, CI.

askdocs — RAG service with evaluation harness

An agent that answers natural-language questions over a SQL database via a Claude tool-use loop, with a hard read-only boundary and cost/latency observability.

data-analyst-agent — Claude tool-use SQL agen

A CLI that lints .env files against a declared schema (missing/empty/mistyped/duplicate keys) with CI-friendly exit codes and JSON output; tested on Python 3.12 & 3.13.

envlint — zero-dependency CLI

FastAPI SaaS API with JWT auth, strict per-user data isolation, and Stripe subscription tiers driven by a signed webhook. Dockerized (Postgres), 14 tests, CI.

linkvault — multi-tenant SaaS API

Modern data-stack pipeline: source data → DuckDB → layered dbt models into a star schema, with 26 data-quality tests gating every build. CI runs the full pipeline.

retail-data-pipeline — DuckDB + dbt

Event-time windowed stream processing with watermarks and late-event handling (Flink/Spark model), sinking finalized windows to DuckDB.