(Internship | On-site | Madrid)We are looking for an Auxiliar Administrativo to help us grow our Innotaxes team in Spain. This is not just a role — it is a key opportunity to streamline our cross-border operations, directly impact efficiency, and grow within a fast-paced international tax consultancy environment.? Key Responsibilities? Document Management & Quality Control- Review, classify, and digitally archive invoices and formal tax documentation for clients across multiple integral markets.- Ensure all client files are fully organized, accurate, and up to date- Act as a horizontal support pillar for our Account Managers (AMs), Management and Accounting- Monitor deadlines closely and send timely alerts? International Client Relations- Proactively contact team members (covering EN, RU, JPN markets) to request and follow up on required paperwork.- Maintain an exceptional standard of client coordination to prevent communication bottlenecks.? Accounting & Tax Support- Provide hands-on technical support by performing bank reconciliations before data is transferred to a3 software.- Deliver logistical support during high-volume periods,



such as quarterly and monthly tax presentation closings.? RequirementsHard Skills- Native or C1-C2 Spanish level- Minimum B2 English level- Valuable prior knowledge or familiarity with a3 management software.- Degree in ADE, Finance, or relatedExperience- Minimum of 6 months to 1 year of prior experience working in a consultancy, tax advisory, or fast-paced corporate administrative environment.Soft Skills- Exceptional attention to detail and methodical organization.- Strong time management abilities and capacity to handle multiple priorities.- Assertive communication and great adaptability to learn new processes.? What We Offer- Hands-on mentorship and training in real-world accounting and advanced tax management tools (a3).- Continuous training and mentorship from an international team.- Team-building, wellness, and creative activities.- Our exciting Yearly Company Trip.- Restaurant and transport benefit cards? Additional Information- Working hours: 30 hours per week.- Contract type: Internship with an educational stipend (Requires a study center agreement)- Start date: TBD.

📌 Auxiliar Administrativo - Internship (Madrid)
🏢 InnoTaxes
📍 Madrid