MADRID 30.03.2026

Tax Accountant

Role Overview

Own the full accounting and tax cycle at a fast-growing space startup, ensuring financial compliance, optimizing R&D tax incentives and supporting the internalization of our accounting operations.

Play a key role in building the financial backbone of a pioneering space startup, where your expertise in tax and accounting directly fuels innovation.

Tax Accountant

Responsibilities.

  • Manage the full accounting cycle, including fixed assets, month-end and year-end closings, and annual financial statements.
  • Ensure tax compliance across all filings (VAT, CIT, withholdings) and maintain an up-to-date tax calendar with AEAT.
  • Lead the management of R&D&I tax deductions and Social Security bonuses under Spanish Corporate Income Tax regulations.
  • Oversee grant accounting and cost allocation to active R&D projects in line with PGC standards.
  • Drive the internalization of accounting operations in close collaboration with the Operations Manager.

Qualifications & Skills.

Must Have

  • Degree in Business Administration, Accounting and Finance, or a related field.
  • Minimum 5 years of experience in a similar role combining accounting and taxation.
  • Proven experience with public grants or R&D projects (CDTI, AEI, Horizon Europe).
  • Proficient use of Holded or an equivalent accounting ERP.
  • Strong command of the Spanish General Chart of Accounts (PGC 2007) and current Spanish tax regulations.
  • Knowledge of R&D&I tax deductions under Corporate Income Tax and accounting capitalization of research projects.
  • Familiarity with public grant accounting (capital vs. operating).
  • Proficiency in office tools: advanced Excel and Google Workspace.
  • High organizational capacity and attention to detail.
  • Autonomy and ability to learn in a fast-paced environment.
  • Proactive approach to identifying and correcting deviations.
  • Strong communication skills and team player mindset.

Nice to Have

  • A Master’s in Tax Advisory or Accounting and Auditing is a plus.
  • Experience in technology-based companies or startups is a plus.
  • Fluent in spoken and written English.

Benefits & Perks.

A key role in a pioneering space startup, where you will directly impact the development of cutting-edge propulsion technology.

FULL-TIME CONTRACT

A FULL-TIME CONTRACT OF 40H PER WEEK.

FLEXIBLE WORKING HOURS

ALLOWING YOU TO MANAGE YOUR SCHEDULE FOR BETTER WORK-LIFE BALANCE.

HYBRID WORK MODEL

WORK REMOTELY UP TO 9 DAYS PER MONTH.

EXTRA HOLIDAYS

IN ADDITION TO 23 VACATION DAYS, ENJOY 6 ADDITIONAL DAYS OFF DURING THE CHRISTMAS PERIOD (FROM 24 DECEMBER TO 2 JANUARY, BOTH INCLUDED).

PRIVATE HEALTH INSURANCE

PRIVATE HEALTH INSURANCE, FULLY COVERED BY THE COMPANY.

LEARNING BUDGET

€1000 PER YEAR BUDGET FOR TRAINING, COURSES, AND PROFESSIONAL GROWTH.

AUTONOMY AND RESPONSABILITY

YOUR CONTRIBUTIONS WILL DIRECTLY SHAPE OUR TECHNOLOGY AND SUCCESS.

OPEN POSITIONS.