Selected builds · 05 channels
ProjectsBackend, systems and AI/ML engineering, with the numbers to back it
I'm Paritosh Singh, a software engineer in Bengaluru. I build software that holds up under load and the test harness that proves it. Each project below has a short case study: the problem, what I built, the decisions that mattered and the measured results.
Case studies
mini-redis2.7M+Systems engineering · C++A Redis-compatible server in 594 lines of C++: a non-blocking epoll event loop, a RESP parser that survives split TCP reads, and 2.7M+ GET/sec pipelined.Revenant93.8%AI agents · causal measurementAn AI payment-recovery agent that reports the lift it caused, not gross recovery: randomised holdout, bootstrap intervals and 93.8% calibrated coverage.Agent Replay339Agent CI · AWS BedrockAgent Replay derives a YAML contract from recorded Strands agent runs on AWS Bedrock and fails CI on the exact step a later run diverges. No LLM judge.Vigil0.876Machine learning · Full stack · PublishedVigil forecasts 7 natural-hazard types across 25 Indian cities with XGBoost and LightGBM, explained with SHAP. ROC AUC up to 0.876. Paper accepted in ISJEM.TeamPulse73Full stack · Real-timeA Slack-style platform with channels, DMs, presence and WebRTC calls on Express and MongoDB: 73 REST endpoints, 15 Socket.IO handlers, RBAC, Bull + Redis.
Open source
Martin (MapLibre)MergedRust vector tile server, 3.9K stars. Fixed a redirect that ignored --route-prefix for .pbf tile requests; merged in PR #2599 with a regression test and shipped in v1.10.1.render-engine-cliMergedPython static site generator CLI. Fixed broken sitemap URLs when serving sites locally; merged in PR #40 after two rounds of maintainer review.