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Nuclearn · 4 months ago

Full‑Stack Engineer II/Sr (React + Python)

Phoenix, AZ

Full-time

Hybrid

Mid, Senior Level

$125K/yr - $150K/yr

Nuclearn.ai builds AI-powered software for the nuclear and utility industries, focusing on tools that enhance infrastructure reliability and safety. They are seeking a Full-Stack Engineer II/Sr to develop features using a Python/React stack, manage API design, and ensure system reliability through data integration and customer collaboration.

Artificial Intelligence (AI)EnergyMachine LearningNuclearSoftware

No H1B

U.S. Citizen Only

Responsibilities

Ship production features across React (frontend) and FastAPI (backend) that power our products (e.g., CAP AI, AtomAssist)

Design and evolve APIs and Postgres schemas for performance, correctness, and auditability (migrations, indexing/partitioning, background data corrections)

Containerize and deploy services with Docker/Podman and Kubernetes; help tune queues/workers (Redis, RabbitMQ, Celery) for throughput, reliability and idempotency

Make data usable: build ingestion pipelines that prefer tabular sources (CSV/Excel/JSON) but gracefully handle the 'we only have PDFs' reality - minimizing OCR, adding validation, and failing safely

Integrate with customer systems common in the industry (e.g., Maximo, DevonWay, Microsoft 365/Teams/OneNote)

Own reliability: reduce noise and fix root causes identified across Sentry and Netdata; add observability, back-pressure, retries, and circuit breakers so we never lose a record

Collaborate with customers: join (lightweight) customer calls with utilities to understand constraints, scope integrations, and demo new capabilities

Build a DevonWay → CAP AI connector that ingests event data in tabular form, validates against our schemas, and supports safe reprocessing

Add a 'simulate, then apply' workflow for CAP automations (human-in-the-loop gates, dry-run diffs, full audit trails, easy rollbacks)

Cut a noisy Sentry class of errors by 30% by hardening a Celery task (idempotent writes, retry policy, dead-letter queue)

Implement license entitlements & usage reporting for a fleet customer renewal (clean server-side enforcement plus UI visibility)

Deliver a small Teams/OneNote POC to integrate new data streams into AtomAssist

Qualification

ReactPythonFastAPIPostgreSQLDockerKubernetesRedisRabbitMQCeleryJavaScriptHTML/CSSGit/GitHubSentryNetdataPyTestCypressCustomer-facing engineeringClear communication