ERP Integration Engineer

Rate: 90 – 120 PLN/hour (B2B)

We are looking for an experienced Workday Integration Engineer to join Flix on a freelance/service agreement basis (B2B contract) . This is a contractor engagement for a seasoned integration professional who wants to work on impactful, hands-on engineering challenges.

Scope of Services

Design, build, and maintain AWS-based integrations between our Workday HRIS and the internal and external systems within FlixTech People Enablement Stream. Work closely with HR, IT Infrastructure, various internal stakeholders, and external vendors to ensure seamless data flow and automation across platforms.

About the Engagement

Design, build, and deploy scalable integrations on AWS connecting HR, payroll, and workforce platforms — consuming data from systems like Workday, Deel, Greenhouse, and other third-party providers

Architect and maintain event-driven and API-based integration workflows using AWS services including EventBridge, Lambda, API Gateway, ECS/Kubernetes, SQS, and S3

Use Python to develop integration services, automation scripts, and data transformation and mapping logic to ensure accurate and consistent data exchange between systems

Use Infrastructure as Code, such as Terraform, to provision and maintain cloud infrastructure in a consistent and repeatable manner

Implement CI/CD pipelines using Git and DevOps tools to streamline code versioning, testing, and deployment

Implement secure integration pipelines using OAuth 2.0, SFTP, certificate-based authentication, AWS KMS encryption, fine-grained access controls, and PII masking to ensure GDPR compliance and protect international employee data

Implement monitoring, logging, and error-handling mechanisms to support troubleshooting, data integrity, and reliable production operations

Collaborate with functional teams to understand business processes and translate them into robust integration solutions

Troubleshoot and optimize integration performance in development, testing, and production environments

Provide technical guidance, best practices, and consulting to other developers

About You

Experience connecting diverse HR, ATS, payroll, and EOR systems (Workday, Deel, Greenhouse, etc.), with a strong grasp of employee lifecycle events, organizational structures, and payroll cutoffs

Experience with API-based integrations using REST, SOAP, and JSON/XML

Experience with AWS, API Gateway, Terraform, and Infrastructure as Code

Familiarity with CI/CD pipelines, version control systems, and modern DevOps practices

Experience with secure data exchange, including SFTP, certificate management, encryption, and API authentication

Strong communication skills to collaborate with HR, Finance, IT, and external vendors to turn business needs into integration designs

Fluent in English; German language skills are a welcome bonus

Preferred Skills:

Experience with Workday Integration technologies such as Workday Studio, PECI, Core Connectors, or EIBs

Collaboration Model

Cooperation based on a service agreement (B2B/freelance contract), not an employment contract

You will operate as an independent contractor, responsible for delivering agreed services and submitting invoices

Location : open for contractors based in Poland