Technical Customer Success Manager (E-Invoicing)

TL;DR

Technical Customer Success Manager (E-Invoicing): Provide technical guidance and support for customers integrating hirify.global's E-Invoicing API, focusing on European markets and preparing for Polish market expansion. With an accent on troubleshooting complex validation errors and API integration, leveraging AI tools to automate and speed up solutions. Focus on ensuring seamless data transfer to tax authorities and supporting cross-border VAT compliance.

Location: Hybrid in Vienna preferred; remote options available in Germany, Spain, or Italy

Company

hirify.global powers retail technology behind digital receipts and legally compliant transactions, helping retailers digitize and fight tax fraud across Europe.

What you will do

• Guide customer teams through technical integration of E-Invoicing API across European markets.
• Support Polish market readiness by testing and assisting with specific Polish integration flows.
• Analyze and resolve complex validation errors in JSON and XML data.
• Provide actionable API debugging guidance using tools like Postman and cURL.
• Create developer-focused documentation and guides for cross-border VAT and KSeF authentication.
• Identify technical friction points and communicate them to Product and Engineering teams.

Requirements

• English and Polish language proficiency at C1+ level is mandatory.
• 3+ years experience in Technical Support, Solutions Engineering, or API Integration.
• Strong technical fluency with REST APIs, JSON, XML, and developer tools.
• Experience with EDI, ERPs, or E-Invoicing standards like Peppol, XRechnung, FatturaPA; knowledge of Polish KSeF system is a strong advantage.
• Service mindset with ability to explain technical issues clearly to non-technical stakeholders.
• Preference for automation and use of AI tools to enhance troubleshooting efficiency.

Nice to have

• Fluency in German, Italian, Spanish, or French.

Culture & Benefits

• Space to grow, take ownership, and learn through experimentation.
• 25 vacation days per year adjusted by local labor laws.
• Flexible working hours with hybrid or fully remote options in DE/ES/IT.
• Budget for personal and professional development.
• Choice of hardware platform (Windows, Linux, Mac).
• Culture valuing clarity, well-being, and effective work over noise.