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kritibehl/README.md

Kriti Behl

Software Engineer | Backend · Distributed Systems · Reliability

M.S. Computer Science, University of Florida · Dec 2025 · GPA 3.8 Open-source contributor to Temporal Go SDK and Azure SDK for Go Chicago, IL · Open to relocation

Temporal Go SDK Azure SDK University of Florida

I build backend and infrastructure systems that stay correct when failures, concurrency, and regressions make behavior difficult to reason about.


Open Source

Temporal Go SDK — 7 merged PRs

  • Fixed goroutine leak in test runtime shutdown — #2200
  • Fixed OnWorkflow mock to see propagated context headers — #2212
  • Added task poller-type instrumentation for scalable task pollers — #2248
  • Fixed already-ready future chaining to properly complete destination futures — #2298
  • Documented worker activity rate-limit timeout caveat — #2367
  • Added external-storage support for query results — #2459
  • Fixed legacy query task failure reporting — #2639

Azure SDK for Go

  • Fixed azcore retry-policy error composition using errors.Join#26051 (merged)
  • W3C Trace Context support (traceparent/tracestate) — #26106 (in review)

Selected Projects

Faultline — distributed job execution correctness

Lease-based job systems have a gap: lease expiry stops the next worker from waiting, but it does not stop the old worker from writing late after it recovers from a crash or network partition. That stale write is what corrupts ledgers and causes double-charges.

Faultline closes that gap by rejecting stale writes at the database boundary, not in application logic — a UNIQUE(job_id, fencing_token) constraint in Postgres means a recovered worker holding an old token gets rejected by the database itself, regardless of what the application code does. Each job claim increments a fencing token; if worker A stalls and worker B takes over and commits with a newer token, worker A's eventual late commit is rejected because its token is strictly older.

Validated across 1,500+ injected failure scenarios (crash, lease takeover, retry storm under 50+ concurrent retries, duplicate submission, partial write + crash) with 0 duplicate commits and 0 invariant violations, benchmarked against a naive queue that produced 12 duplicates under the same 20% fault-injection rate. Includes a reconciler that repairs incomplete jobs and converges stale state, a Go inspector API for live lease-risk state, and Prometheus/OTEL instrumentation for stale-rejection rate and claim latency.

Python (primary) · Go (inspector API) · PostgreSQL · Docker · Prometheus · OpenTelemetry

KubePulse — release-safety validation across the stack

Kubernetes readiness probes check whether a container is alive, not whether the deployment is safe for users. A service can pass every probe while DNS is failing, p95 latency has tripled, and the error budget is at zero — and the next deployment wave rolls out anyway.

KubePulse runs a 4-layer validation gate (health signals → network validation → SLO/error-budget evaluation → probe-integrity divergence check) and issues an explicit release decision. In controlled testing it blocked 5 dangerous deployments that all showed probes_say_healthy: true, including a cascade where p95 latency rose +333% and error rate hit 8% while every readiness probe stayed green.

It also includes a validated networking layer underneath the Kubernetes-facing tooling: a two-AS eBGP topology built with FRRouting and Linux network namespaces, with explicit prefix import/export policies and measured 251ms median / 270ms p95 data-plane recovery across 10 fault-injection runs tracing withdrawals from the BGP RIB into the kernel FIB; and a Layer-2 lab (VLAN-aware bridges, 802.1Q trunks, router-on-a-stick inter-VLAN routing) where a deliberately introduced trunk fault produced 100% loss isolated to a single VLAN, diagnosed and rolled back with packet-capture evidence.

Python · FastAPI · Kubernetes · Terraform · FRRouting · Prometheus · Docker Compose

DetTrace — first-failure isolation via deterministic replay

Debugging concurrent and distributed failures is asymmetric: failures are easy to observe and hard to locate, because logs record state changes after they happen — the event that actually caused the failure often isn't logged at all.

DetTrace generates an expected deterministic trace, replays the divergent execution, and binary-searches over the two to isolate the first divergence index — not the last visible symptom. Validated across a 20-scenario I/O transport corpus (SPI, I2C, UART, GPIO interrupt races, and a distributed retry-storm scenario) with 10,000+ trace validations, 0.93 root-cause confidence, and 0 false positives in the validation corpus (documented ~7% false-positive rate on identified root cause in general use, with downstream confidence scoring to catch most of them). The C++17 replay engine passes 47 GoogleTest cases clean under AddressSanitizer and UndefinedBehaviorSanitizer; a Swift async/await layer handles concurrent analysis of large trace corpora without analysis-time races.

The README is explicit about scope: firmware scenarios are trace simulations, not driver/kernel-level implementations, and the API layer is a proof of concept — a distinction worth being able to explain in an interview as clearly as the mechanism itself.

C++17 · CMake · GoogleTest · Swift · Python (FastAPI)

AgentGrid — making AI agent failure modes observable

Production GenAI systems fail in ways that are hard to see in aggregate metrics: retrieval misses the relevant document, a tool call silently returns a stale result, an answer generates without grounding. A single pass-rate number hides all of this.

AgentGrid instruments every stage of an agent pipeline (triage → retrieval → tool execution → generation → eval gate → optional human review) with per-stage metrics rather than one end-to-end score, and gates releases on retrieval hit rate, tool success rate, p95 latency, and drift signals. Current measured state: 80% retrieval hit rate, 80% tool success rate, 880ms p95 — gated to a HOLD decision rather than shipped, with the hold reason (quality risk on an entity-search scenario) surfaced explicitly rather than averaged away. 57 tests passing.

Python · FastAPI · React/TypeScript · Redis · Prometheus

More projects
  • FairEval — blocks AI releases that regress under real serving load
  • AccelSim-Lite — names throughput/latency bottlenecks and gates the regression
  • AutoOps-Insight — detects CI/CD failures before they reach production
  • Enterprise Process Lab — validates ERP integrations and controls compliance

Experience

Meta × MLH — Production Engineering Fellow (June–September 2026)

  • Deployed and operated a Linux-hosted Flask service on a cloud VPS with SSH access, DuckDNS routing, host/port binding, Python virtualenv dependency management, and tmux-based process persistence
  • Automated redeployment with a Bash script covering 6+ manual operational steps: GitHub sync, repo reset, virtualenv activation, dependency installation, stale tmux cleanup, and Flask service restart
  • Built Bash/Python automation for API parsing, regex matching, process debugging, and Apache log analysis across a 237MB multi-million-line dataset, extracting 2.9M+ unique source IPs and HTTP status-code distributions

Technical Skills

Languages: Python, Go, C++, Java, SQL, Bash, JavaScript Backend: REST APIs, FastAPI, PostgreSQL, distributed job execution, concurrency, idempotency Infrastructure: Kubernetes, Docker, Terraform, AWS, GitHub Actions Systems: Linux, TCP/IP, distributed systems, fault tolerance, transactional correctness Observability: Prometheus, Grafana, OpenTelemetry, Datadog


Contact

email: kriti0608@gmail.com linkedin: linkedin.com/in/kriti-behl portfolio: kriti-portfolio-six.vercel.app

Open to Software Engineering opportunities in the U.S. · Open to relocation

Pinned Loading

  1. faultline faultline Public

    Crash-safe distributed job execution with fencing tokens, lease recovery and deterministic failure validation.

    Python 5

  2. AutoOps-Insight AutoOps-Insight Public

    Reliability analytics for CI failures — recurring signature detection, release-risk reporting, Prometheus metrics, API/CLI and dashboard

    Python 3

  3. dettrace dettrace Public

    Deterministic replay and distributed incident forensics for first-failure and blast-radius analysis.

    C++ 3

  4. KubePulse KubePulse Public

    Kubernetes resilience validation for real recovery behavior, probe integrity and rollout scorecards.

    Python 2