Senior Software Development Engineer

NYLON; Christchurch; On-site; NZD 150,000 - 210,000; Full time

Job summary

Nylon is hiring senior full-stack engineers to own product integration surfaces end to end—from architecture and delivery to production realities. You will own a surface across Outlook, Xero, and practice-management systems, driving Nylon deeper into how firms operate.

We value 5+ years of commercial software development, ownership, and the ability to design and operate systems end-to-end. You’ll work in an async-first, AI-native environment with strong emphasis on clear writing and high agency.

Qualifications

• 5+ years of commercial software development experience.
• You can point at a system you took from design to production and then operated.
• High agency: biased towards action, you own outcomes, not tasks.
• You decompose hard problems and reason in trade-offs, out loud and in writing.
• You already use AI tooling to ship faster, and you're curious about where that goes next.
• You build robust systems to reduce 2am pages.
• Show us something you built because you wanted it to exist (repo, app, product or business).

Responsibilities

• Own product integration surfaces end to end: architecture, delivery and operational excellence.
• Collaborate with product from concept through production and iterate on real usage.
• Drive integration work into Outlook, Xero and practice-management systems to embed Nylon deeper into daily workflows.

Skills

Ownership & accountability

End-to-end ownership

Problem decomposition

5+ years exp

Written communication

Tools

Node.js

PostgreSQL

AWS

Terraform

Jest

Docker

Datadog

GitHub Actions CI/CD

React

Job description

About us

Nylon is the AI research platform for tax and law professionals.

The tool practitioners reach for when the answer has to be right. We're used by 2,000+ firms across NZ, AU and the UK, backed by Blackbird, and expanding fast beyond research into the wider workflow professionals live in: client meetings, documents, the tools firms already use.

The role

We’re hiring senior full-stack engineers (backend-heavy) to own product integration surfaces end to end: architecture, delivery and operational excellence. You’ll work with product from “should this exist?” through to running in production, then keep iterating on real usage. Your work lands with thousands of firms across NZ, AU and the UK.

We're hiring into the Integrations pod where you'll be driving the wedge into the daily workflow. Outlook, Xero, practice-management systems. Each one pulls Nylon deeper into how a firm actually runs.

How we work

• AI-native. Agentic dev tooling (Claude Code) is the development loop.

• You run what you ship. Owning a surface includes its production health, observability, performance and incident response.

• Async-first. Clear writing is a first-class engineering skill here.

• No prescribed solutions. We agree the problem and the constraints; how you solve it is yours.

About you

We care most about evidence of ownership, but you've likely got 5+ years of commercial software development experience.

• You can point at a system you took from design to production and then operated

• High agency: biased towards action, you own outcomes, not tasks

• You decompose hard problems and reason in trade-offs, out loud and in writing

• You already use AI tooling to ship faster, and you're curious about where that goes next

• You build robust systems to reduce the 2am pages

• Show us something you built because you wanted it exist (a repo, an app, a product or a business all count)

Stack

• Node.js

• PostgreSQL

• AWS

• Terraform

• Jest

• Docker

• Datadog

• GitHub Actions CI/CD

• React