Integrations Engineer — Scale ATS/HRIS Connectors

Zinc; London Borough of Hackney; On-site; GBP 72,000 - 75,000; Full time

Benefits offered by this job

Holiday allowance

Birthday off

Benefits allowance

Early finish Fridays

Annual retreat abroad

Work from anywhere

Enhanced parental leave

NEST pension

Zinc EMI shares

Therapy access

Social events

Electric car scheme

Job summary

Zinc is growing its Integrations team. Integrations with ATS and HRIS platforms such as Workday, Greenhouse, iCIMS, Lever and SmartRecruiters are a major growth lever, and demand from Partnerships and Sales is outpacing what our current team can build.

As an Integrations Engineer, you'll add the engineering capacity to change that. You'll design, build and scale connections with third-party platforms, and evolve our Partner API so partners can build on Zinc with less hand-holding.

Qualifications

• Integration Engineering - you've built production integrations with third-party APIs, weighing sync vs async, webhooks vs polling, and retry strategies.
• TypeScript / Node.js - production experience; backend is TypeScript and standardized across codebase.
• REST APIs & Webhooks - OAuth2, pagination, rate limits, retries and idempotency.
• Data Mapping - moving data between JSON, XML and SOAP; Workday and iCIMS are XML/SOAP-heavy.
• Testing - proficient with Jest and contract/integration tests using mocks.

Responsibilities

• Building integrations end to end - read partner API docs, spec with PM, then build, test and release new integrations.
• Hardening what's live - move existing integrations off deprecated mechanisms and strengthen error handling.
• Evolving the Partner API - own endpoint design, versioning, webhooks, docs and sandbox.
• Building reusable patterns - create shared connector and mapping layers.
• Giving support the tools - build internal tooling and observability for faster diagnosis.
• Being the escalation point - root-cause and fix issues not resolved by Support.
• Shaping what we build - provide technical feasibility input during discovery.
• Raising the bar - review code, set testing standards, and occasional Vue/Nuxt work.

Skills

Integration Engineering

TypeScript / Node.js

REST APIs & Webhooks

Data Mapping

Testing

Tools

Jest

Job description

Zinc is growing its Integrations team. Integrations with ATS and HRIS platforms such as Workday, Greenhouse, iCIMS, Lever and SmartRecruiters are a major growth lever, and demand from Partnerships and Sales is outpacing what our current team can build.

As an Integrations Engineer, you'll add the engineering capacity to change that. You'll design, build and scale connections with third-party platforms, and evolve our Partner API so partners can build on Zinc with less hand-holding.