Remote Integration Lead for AI-Driven SaaS Platform

NATEK; Warszawa; Hybrid; PLN 180,000 - 300,000; Part time

Job summary

NATEK is undertaking a strategic IT transformation to replace its legacy core with a modern, modular SaaS ecosystem for CRM, ATS, PSA, and HRIS. The Integration Lead will own architecture, delivery, and operation of the integration landscape across platforms and with the broader business ecosystem.

The role combines leadership with hands-on delivery in a flexible, part-time arrangement with some Warsaw presence.

Qualifications

• Strong knowledge of OAuth2, API authentication, webhooks, polling, rate limiting, pagination, and integration patterns.
• Hands-on experience with integration platforms such as Azure Logic Apps, Azure Functions, n8n, Mulesoft, Boomi, Workato, Celigo, Make, or similar.
• Strong understanding of monitoring, logging, alerting, troubleshooting, and operational support.
• Experience designing resilient integrations, including retries, idempotency, reconciliation, and error handling.
• Solid understanding of data modeling, data mapping, and master data management concepts.
• Experience integrating payroll, HR, finance, accounting, or e-signature solutions.
• Knowledge of Microsoft 365 and Entra ID integration scenarios.
• Familiarity with GDPR, security best practices, secrets management, and access control.
• Strong Git and version-control practices.
• Advanced use of AI-assisted development and productivity tools.

Responsibilities

• Define integration strategy and architecture for a SaaS ecosystem.
• Build and test interfaces; drive vendor alignment and production cutover.
• Configure, test, and optimize data flows across ATS, PSA, HRIS, identity, payroll, finance, and BI.
• Lead end-to-end integration testing and business acceptance activities.
• Prepare runbooks, mappings, and support procedures.
• Train and mentor internal IT teams and ensure transfer of ownership.

Skills

OAuth2

API authentication

Webhooks

Polling

Rate limiting

Pagination

Integration patterns

Azure Logic Apps

Azure Functions

n8n

Mulesoft

Boomi

Workato

Celigo

Make

Git

Version control

AI-assisted development

Relational databases

Data migration

Data modeling

Data mapping

Master data management

GDPR

Security best practices

Secrets management

Access control

Microsoft 365

Tools

Azure Logic Apps

Azure Functions

n8n

Mulesoft

Boomi

Workato

Celigo

Make

Job description

NATEK is undertaking a strategic IT transformation to replace its legacy core with a modern, modular SaaS ecosystem for CRM, ATS, PSA, and HRIS. The Integration Lead will own architecture, delivery, and operation of the integration landscape across platforms and with the broader business ecosystem.

The role combines leadership with hands-on delivery in a flexible, part-time arrangement with some Warsaw presence.