Customer Integration Specialist

OneRail Poland Sp. z o.o.

Kraków, MA, Poland • 14m ago • On-site

Mid

On-site

156,000 - 192,000 PLN/yr

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Quick Facts

Role: Customer Integration Specialist

Focus: Designing, configuring, testing, and supporting customer integrations for a SaaS delivery orchestration platform

Work style: Hybrid (3–4 days/week from the office)

Location: Kraków, Poland

Description

You will design, configure, test, and support customer integrations during the implementation lifecycle, serving as the technical bridge between customers and internal teams (Implementation, Product, and Engineering). The goal is seamless connectivity between customer systems and the platform, with secure, reliable end-to-end data flows before production launch.

Responsibilities

  • 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.
  • Partner with Implementation Managers on technical implementation plans.
  • Build and execute integration test plans.
  • Troubleshoot API connectivity, data validation, and workflow issues.
  • Document technical configurations and implementation decisions.
  • Create detailed process and integration flows showing how customers’ infrastructure connects to the platform.
  • Ensure integrations meet security and performance requirements.
  • Serve as a technical liaison between Customer Success, Product, Engineering, and customers.
  • Escalate product defects and enhancement requests with clear technical documentation.
  • Collaborate with Engineering on complex implementations requiring custom development.
  • Assist Support with complex post-go-live integration issues when necessary.
  • 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 using repeatable solutions.

Requirements

  • Bachelor’s degree in Computer Science, Information Systems, Engineering, or equivalent experience.
  • 2–5 years of experience implementing SaaS software or enterprise integrations.
  • REST API experience.
  • Familiarity with JSON, XML, CSV, and data transformation.
  • SQL knowledge for data validation.
  • Understanding authentication methods (OAuth, API Keys).
  • Postman or similar API testing tool experience.
  • Middleware/iPaaS familiarity (e.g., MuleSoft, Boomi).
  • Ability to manage multiple implementation projects simultaneously.
  • Experience with logistics, transportation, supply chain, or retail technology.
  • Understanding webhooks and event-driven architecture.
  • Customer-facing SaaS experience.
  • Strong troubleshooting and analytical skills.
  • Advanced English & Polish (B2+) in both written and spoken communication.

Benefits

  • Salary: 13,000–16,000 PLN/month.

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