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
Skills Required
- Experience connecting HR, ATS, payroll, and EOR systems, including Workday, Deel, and Greenhouse
- Experience with API-based integrations using REST, SOAP, JSON, and 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 for collaboration with HR, Finance, IT, and external vendors
- Fluent English
- German language skills
- Experience with Workday Studio, PECI, Core Connectors, or EIBs
What We Do
Flix is a global travel tech leader providing sustainable and affordable travel options to more than 60 million yearly travelers in 43 countries through its brands FlixBus, FlixTrain, Greyhound, and Kamil Koç. By combining network planning, marketing, and pricing, Flix uses innovative solutions to enable comfortable, sustainable, and affordable travel worldwide. Through our tech platform and user-friendly app, Flix creates a travel experience tailored to passengers' needs and connects travelers with local business partners providing transportation, ensuring a modern fleet that adheres to the highest safety standards. This asset-light business model has turned a European start-up into a leading and globally expanding travel-tech champion. Flix is pioneering and testing alternative drives with a long-term strategy to progressively decarbonize its fleet. Together with our partners and customers, we are driving transformative change towards the future of mobility, gradually reshaping the mobility sector and enabling more sustainable travel modes. Check out https://flix.careers/ to see how you can join our team. For our legal imprint click here: https://global.flixbus.com/legal-notice
