SignalLoop

What it does

AI provider

The constrained AI collaborator supports an OpenAI provider and a local fallback.checked 9 Oct 2001

AI providers

The constrained AI collaborator supports an OpenAI provider and a local fallback.checked 9 Oct 2001

Assessment

It evaluates candidates solving backend engineering tasks with a constrained AI collaborator and generates an Engineering Evidence Report for employer review.checked 9 Oct 2001

Candidate workspace

Candidates use invite links and a browser workspace with a Monaco editor for file editing.checked 9 Oct 2001

Deployment options

The project documents a hosted Render/Supabase/Clerk pilot and local setup using PostgreSQL, a Docker worker, an API, and a web app.checked 9 Oct 2001

Employer advisory

An optional bounded GPT-5.6 advisory summarizes allowlisted process evidence without changing deterministic scores, integrity labels, or recommendations.checked 9 Oct 2001

Employer reporting

The platform generates deterministic Engineering Evidence Reports, with an optional bounded GPT-5.6 advisory that does not change scores, integrity labels, or recommendations.checked 9 Oct 2001

Evidence captured

It captures evidence of problem framing, AI use, verification, design judgment, and candidate ownership.checked 9 Oct 2001

Evidence report

The platform captures evidence of candidate framing, AI usage, verification behavior, design judgment, and ownership, then generates an Engineering Evidence Report for employer review.checked 9 Oct 2001

Execution isolation

The security policy says local execution uses Docker and hosted production execution should use isolated per-run tasks.checked 9 Oct 2001

Integrations

The documented pilot uses Render for web/API hosting, Supabase for Postgres, Clerk for employer authentication, and AWS ECS/Fargate as an optional per-run execution provider.checked 9 Oct 2001

Intended users

The product is for software engineering hiring teams evaluating candidates’ problem framing, verification, judgment, AI collaboration, and ownership.checked 9 Oct 2001

Maintainers

SignalLoop was created as joint work by Sreenivas Makam and Ritesh Dhoot.checked 9 Oct 2001

Notable limit

Guided role matching does not compose new questions, and the question bank is not connected to employer blueprint composition, candidate delivery, or report scoring.checked 9 Oct 2001

Notable limitation

Guided role matching does not assemble new questions, and question-bank items are not connected to employer blueprint composition, mixed-question delivery, or report scoring.checked 9 Oct 2001

Open-source license

The repository states that original application code and documentation are Apache-2.0 unless a file specifies otherwise, while imported question-bank content retains upstream licensing and attribution requirements.checked 9 Oct 2001

Open-source licensing

The original application code, documentation, and internally authored assessment material are Apache-2.0 unless a file states otherwise; imported question-bank material retains its upstream licensing and attribution requirements.checked 9 Oct 2001

Product

SignalLoop is an AI-native candidate evaluator for software engineering hiring.checked 9 Oct 2001

Production use

The repository says its public demo assessment packs expose hidden tests, scoring rubrics, and evaluator notes, and recommends private calibrated packs for real hiring decisions.checked 9 Oct 2001

Purpose

SignalLoop is an AI-native candidate evaluator for software engineering hiring that assesses realistic backend tasks with a constrained AI collaborator.checked 9 Oct 2001

Role matching

Guided role matching maps role or job-description requirements to the closest registered Standard or Advanced FastAPI assessment and reports unsupported coverage.checked 9 Oct 2001

Security boundaries

The policy says candidate invite tokens are bearer links, public demo hidden tests and rubrics are unsuitable for real hiring, and manual evaluator review is required before hiring decisions.checked 9 Oct 2001

Security controls

Pilot hardening includes audit events, validation and fallback error responses, retry-bounded hidden-worker calls, and basic rate limiting.checked 9 Oct 2001

Security status

The security policy describes SignalLoop as a pilot-stage hiring evaluation system and a reference implementation rather than a hardened production SaaS.checked 9 Oct 2001