Integration Specialist - OneRail’s Technology Hub - Poland

Krakow, Poland

Full Time

OneRail Technology Hub - Poland

Experienced

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.

Apply for this position

Required*

First Name*

Last Name*

Email Address*

Phone*

Address*

Resume*

We've received your resume. Click here to update it.

Attach resume or Paste resume

Attach resume as .pdf, .doc, .docx, .odt, .txt, or .rtf (limit 5MB) or Paste resume

Paste your resume here or Attach resume file

Cover Letter

Who referred you to this position? Enter their first and last name here.

LinkedIn Profile URL:

Website, blog or portfolio:

What languages do you speak fluently?*

Earliest start date?*

To help us assess your alignment with the role’s location requirements (e.g., hybrid/in-office expectations), please indicate where you currently reside (city and country).*

To help us better understand your preferences and ensure alignment with the role’s requirements, please use the space below to answer the following:

A. Are there any work arrangements you are unable or unwilling to accommodate? (*required* — Please do not include medical or other sensitive personal information in your response)

B. What is your preferred work arrangement (e.g., hybrid, remote, in-office)? (*optional* — Please do not include medical or other sensitive personal information in your response)

C. Are there any special accommodations you wish to request? (*optional* — Please do not include medical or other sensitive personal information in your response)

Please note: Your responses will only be used to assess alignment with the specific role and its location requirements. Providing a preferred work arrangement or requesting an accommodation is entirely optional and will not negatively impact your application. All requests will be considered on a case-by-case basis.*

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.”*

Please specify your expected monthly salary and your preferred form of cooperation (e.g., gross for an employment contract or net for a B2B arrangement).*

What is the length of the notice period necessary for you to provide to your current organization if you are offered employment with OneRail Poland Sp. z o.o.?*

Optional: Please use the space below should you wish to provide any additional position/job/industry-related experience or qualifications you’d like us to consider as part of your application. If you consent below, we may also consider this information in connection with future opportunities.

I understand that by submitting this application, I consent to the processing of my personal data by OneRail Poland Sp. z o.o. for the purpose of evaluating my qualifications for the position for which I am applying. If I choose not to provide this consent, my application will not be considered, and any data I have submitted will be deleted in accordance with data protection regulations.*

I consent to OneRail Poland Sp. z o.o. retaining my personal data for future recruitment processes beyond the role for which I am currently applying, for a period of 12 months.*

Human Check*

Submit Application

Thanks for visiting our Career Page. Please review our open positions and apply to the positions that match your qualifications.

Integration Specialist - OneRail’s Technology Hub - Poland

Work Location

Hybrid, Kraków, Poland

Apply for this position