Data Engineer
Integration Specialist - OneRail’s Technology Hub - Poland
Krakow
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Integration Specialist - OneRail’s Technology Hub - Poland
Krakow, Poland
Full Time
OneRail Technology Hub - Poland
Experienced
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The Integration Specialist is responsible for designing, configuring, testing, and supporting customer integrations during the implementation lifecycle. This role serves as the technical bridge between customers, Implementation Managers, Product, and Engineering to ensure seamless connectivity between customer systems and the OneRail platform.
The ideal candidate is highly technical, customer-focused, and enjoys solving integration challenges while working in a fast-paced SaaS environment.
Responsibilities
Customer Integrations
- Design, configure, and implement customer integrations using APIs, webhooks, SFTP, EDI, and flat-file exchanges.
- Lead technical discovery sessions to understand customer system architecture and business workflows.
- Configure integration mappings, authentication methods, and data transformations.
- Validate end-to-end data flow prior to production launch.
Technical Delivery
- Partner with Implementation Managers to develop technical implementation plans.
- Build and execute integration test plans.
- Troubleshoot API connectivity, data validation, and workflow issues.
- Document technical configurations and implementation decisions.
- Create extensive and detailed process and integration flows of customers' existing infrastructure and how it will connect to OneRail.
- Ensure integrations meet security and performance requirements.
Cross-Functional Collaboration
- Serve as the technical liaison between Customer Success, Product, Engineering, and customers.
- Escalate product defects and enhancement requests with clear technical documentation.
- Collaborate with Engineering during complex implementations requiring custom development.
- Assist Support with complex post-go-live integration issues when necessary.
Process Improvement
- Develop reusable integration templates and documentation.
- Improve implementation processes through automation and standardization.
- Create internal knowledge base articles and customer-facing technical guides.
- Identify opportunities to reduce implementation timelines through repeatable solutions.
Qualifications
- Bachelor's degree in Computer Science, Information Systems, Engineering, or equivalent experience.
- 2–5 years of experience implementing SaaS software or enterprise integrations.
- Experience working with REST APIs.
- Familiarity with JSON, XML, CSV, and data transformation.
- SQL knowledge for data validation.
- Understanding authentication methods such as OAuth and API Keys.
- Experience with Postman or similar API testing tools.
- Familiarity with middleware/iPaaS platforms (MuleSoft, Boomi, etc.).
- Ability to manage multiple implementation projects simultaneously.
- Experience with logistics, transportation, supply chain, or retail technology.
- Understanding webhooks and event-driven architecture.
- Experience working in a customer-facing SaaS environment.
- Strong troubleshooting and analytical skills.
- Advanced proficiency in English & Polish, both written and spoken (B2+).
Work Location
Hybrid, Kraków, Poland
Office location:
Kraków, Poland
Work Style:
Hybrid (3-4 days from the office/week)
Salary levels:
13 000 – 16 000 PLN/month
About OneRail
OneRail is a leading omnichannel fulfillment solution pairing best-in-class software with logistics as a service to provide dependability and speed to help businesses meet their delivery promise. With a real-time connected network of 12 million drivers, OneRail matches the right vehicle for the right delivery so brands lower expenses and increase capacity to rapidly scale their businesses. This people-plus-platform approach features a 24/7 USA-based exceptions team who maintain a 98% on-time delivery rate. By optimizing fulfillment processes, reducing costs and improving order accuracy with store-shelf-to-doorstep visibility, OneRail is committed to empowering clients and improving the customer experience.
OneRail was named to the Deloitte Technology Fast 500™ two years in a row, was ranked 19th in the 2025 FreightTech 25, named for the fifth year in a row to the FreightTech 100, was honored as one of Inc. magazine’s Best Workplaces 2023, was listed on Forbes’ lists of America’s Best Startup Employers for the last three years, was named to the Inc. 5000 two years in a row and was selected as the Last Mile Company of the Year for the 2024 SupplyTech Breakthrough Awards. To learn more about OneRail, visit OneRail.com.
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Because this Poland-based role involves collaboration with English-speaking teams in the U.S., it may require regular, proficient communication in English. As such, please indicate your spoken and written languages and your level of both spoken and written proficiency for each language indicated.”
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