Jobs · Engineering · California

Software Engineer - Full-Stack

Sixtyfour · San Francisco, CA · 8 mo ago
HybridEngineering$100k–$200k/yrFull-time

About the role

Build polished, fast product experiences in Next.js + TypeScript (design-quality UI, accessible components, responsive layouts).

Design clean backend contracts and APIs (FastAPI/Python) for workflows, jobs, billing, and auth.

Evolve our workflow engine (DAG/state machine): scheduling, retries/idempotency, rate limits, progress tracking, logs, and user-visible run history.

Ship data pipelines and background workers (Celery/queues), with strong observability and alerting.

Deploy the stack on AWS + Docker (ECS/EKS or similar), with caching (Redis), pagination, backpressure, and cost controls.

Implement product features end-to-end: DB schema → API → UI, including tests and telemetry.

Maintain a high bar for reliability, performance, and UX; instrument everything.

Be very customer-focused on how certain product decisions impact end customers.

Responsibilities

  • Strong backend skills in Python (FastAPI preferred): API design, testing, error handling, schema/versioning.
  • Good design taste is a must.
  • Experience deploying/operating with Docker and a major cloud (AWS preferred: ECS/EKS/Lambda, SQS, CloudWatch).
  • Comfortable with Postgres (or MySQL) schema design and Redis (caching, rate limiting, locks).
  • Performance mindset: RSC/Server Actions, data-fetching patterns, bundle/TTFB tuning, DB query perf.
  • Production observability: logs, traces, metrics (e.g., Langfuse, OpenTelemetry, Sentry), and on-call pragmatism.
  • Solid security hygiene (PII handling, secrets, JWT/session auth, CSRF/CORS, least-privilege access).
  • Next.js App Router, RSC, Server Actions, edge/runtime primitives (Vercel/AWS CloudFront).
  • Prisma/Drizzle; tRPC or GraphQL; Zod/JSON schema; feature flags/experimentation.
  • Realtime UX (WebSockets/SSE), optimistic updates, background revalidation.
  • Celery/RQ, event sourcing, or state-machine libs (e.g., Temporal, Dagster, Prefect, XState).
  • Testing: Playwright (e2e), Vitest/Jest, pytest; accessibility checks.

Requirements

US citizen/visa only.

Qualifications

Flask, Python, Next.js

Skills

  • Flask, Python, Next.js

Benefits

Not specified

Pay

$100K - $200K

Schedule

Remote (US; CA)

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