About nymble

nymble health is a Canadian digital health company delivering automated behavioral support for metabolic health over SMS, WhatsApp, and API - no app required. We operate in Canada, Ireland, Germany, and the US, supporting pharma patient support programs, virtual care providers, pharmacies, and direct-to-consumer patients. We're physician-founded, bootstrapped, and recently won the 2026 American Diabetes Association Innovation Challenge - the first Canadian company to do so.

About the role

We're bringing on a senior Python engineer on contract from Sept to November to ramp up capacity and provide coverage while some resources are away. There is a real opportunity to extend or convert to a longer-term role for the right person.

This is a hands-on role for someone who works fluently with AI coding agents and thrives in a small, high-trust engineering environment.

Most important: AI-agent leverage

Our development system is built to effectively leverage AI coding agents, and we want a contractor who can push that further, not work around it.

• Runs multiple AI coding-agent sessions in parallel using git worktrees

• Builds reusable agent playbooks, skills, hooks, and routines

• Can work in and evolve a development system that leans heavily on automation (extensive testing, operational harness, etc.)

Core technical requirements

• Python 3.12, Flask 3.x, SQLAlchemy 2.0

• Postgres (psycopg3)

• REST API design, Git / PR-based workflow, CI-gated development, GitHub Actions

Specific to our stack

• LLM application: OpenAI SDK, structured output, Pinecone for vector search / RAG

• Messaging and telephony: Twilio SDK (SMS / WhatsApp), delivery-status webhooks

• Azure: Blob Storage, Azure Monitor / OpenTelemetry

• Infra-as-code: OpenTofu / Terraform-style modules spanning servers, customer config, Twilio settings, Cloudflare, and alerting

Principled engineering

• Separation of concerns - business logic independent of how it's triggered and how it's stored

• Domain modeling that makes invalid states impossible

• Modularity - small, intentional interfaces between modules so one can change without cascading edits

• Understands LLM behavior in the app - prompt design, non-determinism, evaluating whether a change made responses better or worse

• Secret and credential hygiene - never lets a secret touch a log, commit, or prompt; understands why rotation matters

• Docs-as-part-of-the-change - writes down the "why" as they go, not after the fact

• Cost-consciousness - aware that LLM calls and cloud infra cost real money per-request

• Fast codebase orientation - finds and follows existing conventions quickly rather than guessing or reinventing

Nice to have

• Prior experience in PHI, PII, or similarly regulated environments (healthcare, fintech, insurance)

• On-call and incident-response experience on a small team

• Familiarity with Nix

To apply

• Send a short note and a link to your GitHub, portfolio, or relevant work to puneet@nymble.health. We're moving quickly - candidates will be reviewed on a rolling basis and we're aiming to have someone onboarded by the end of August.