Senior Integrations Engineer, ATS & API Platform

Zinc Work Ltd; Greater London; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

24 days holiday + Bank Holidays + your

Birthday off

Annual company retreat

EMI share options

Pension with employer contributions

Job summary

Zinc is growing its Integrations team in London. As an Integrations Engineer, you will design, build and scale connections with Workday, Greenhouse, iCIMS, Lever and SmartRecruiters, enabling partners to integrate with Zinc more efficiently.

You’ll own end‑to‑end integrations, harden live connections, evolve the Partner API and deliver reusable patterns. You’ll work with Product, Partnerships and Integration Support, reporting to the Engineering Manager for Integrations.

Qualifications

• Hands-on experience building production integrations with third-party APIs
• Strong familiarity with REST, webhooks, OAuth2
• Experience with data mapping between JSON/XML/SOAP

Responsibilities

• Build integrations end-to-end from partner API docs to release
• Harden live integrations with better error handling and retries
• Evolve the Partner API with versioning, webhooks, and sandbox
• Create reusable connector and mapping layers
• Develop internal tooling and observability for support teams
• Act as escalation point for complex issues
• Provide technical feasibility input during product discovery
• Review code and raise testing standards

Skills

Integration engineering

TypeScript / Node.js

REST APIs & Webhooks

Data mapping

Testing (Jest)

Job description

Zinc is growing its Integrations team in London. As an Integrations Engineer, you will design, build and scale connections with Workday, Greenhouse, iCIMS, Lever and SmartRecruiters, enabling partners to integrate with Zinc more efficiently.

You’ll own end‑to‑end integrations, harden live connections, evolve the Partner API and deliver reusable patterns. You’ll work with Product, Partnerships and Integration Support, reporting to the Engineering Manager for Integrations.