Hashorn
Senior Backend Engineer (Node.js / TypeScript)
Skills
3 months ago
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Important information
Contract type:
Permanent
Location:
Cumberland County, PA, USA
Work mode:
Onsite
Published on:
18 October 2026
What they need
About The Role You'll be the technical owner on customer engagements, usually 4-12 weeks of project work or longer dedicated-pod retainers. You'll write production code, review every PR (yours and AI's), and stand behind the architecture you ship. We're a senior-only studio: no juniors guarded by one senior, no agency-of-the-week mid-levels.
What you'll do
- Design and ship backend services in TypeScript / Node.js: APIs, ledgers, integrations, queues, webhooks.
- Own architecture decisions: data model, deployment shape, observability, on-call story.
- Pair with QA and Security engineers from day one of the engagement, not at the end.
- Use AI assistants for scaffolding, code review, and test generation; reject what's wrong; keep what's right.
- Demo working software every Friday. Document as part of the Definition of Done.
- Hand over to client teams with runbooks, decision logs, and onboarding sessions.
What you bring
- 5+ years building production backends in TypeScript / Node.js (or strong Go / Python adjacent + clear path to TS).
- Deep PostgreSQL knowledge: schema design, indexing, query plans, migrations under traffic.
- Comfort with AWS (or GCP / Azure) at the level needed to ship: ECS / Lambda / RDS / S3 / IAM.
- Track record of owning a production system end-to-end, not just shipping features into one.
- Written communication good enough that documentation isn't a chore.
- Comfort working async across at least one time-zone boundary (US, UK, EU, or ME).
Nice to have
- Stripe / payment-rails integration experience (Issuing, Connect, billing).
- Multi-tenant SaaS architecture experience.
- OSS contributions or technical writing.
Compensation Competitive global rate, scaled to experience and engagement. Profit-share for full-time hires.
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