Clinical Trial Assistant

OXON is seeking a proactive Clinical Trial Assistant (CTA) to join our team in Madrid. Prior experience as a CTA in either a pharmaceutical company or a CRO environment is essential, along with fluency in English. To apply, please send both a CV and a cover letter in English to quoting reference: CTA-Spain Interviews with shortlisted candidates will be held in January/February 2026. OXON Epidemiology is a niche, late-phase international Contract Research Organisation (CRO) with Operations centred in our Madrid office, and home-based staff in the UK and USA. If you are looking to make an impact in a growing company and help to shape its growth, this is the place to be. By working in OXON, you can further your career in a dynamic, fast-paced, learning environment, be innovative and make an impact. JOB DESCRIPTION The successful candidate will have the chance to work across several non-interventional field and database studies within numerous therapeutic indications. As a Clinical Trial Assistant (CTA) you will be providing operational and administrative support to clinical research teams in ensuring the most effective and efficient conduct of clinical research studies. RESPONSIBILITIES Assist Project Teams and Project Managers (PMs) with the administration and coordination of clinical and epidemiological studies. Track critical documents and promptly inform the project management team any outstanding items. Accurately update and clinical systems to meet project timelines. Ensure all study-related activities adhere to OXON Standard Operating Procedures (SOPs) and policies. Support the study team in conducting site feasibility and/or country feasibility assessments. Prepare, distribute, file, and archive documentation throughout the study lifecycle, maintaining both electronic Trial Master Files (eTMF) and paper files. Perform quality control checks on the Trial Master File (TMF) and ensure its completeness and audit readiness. Assist Project Teams in collecting and filing critical documents required for submission to Regulatory Authorities and Ethics Committees. REQUIREMENTS Bachelor’s degree or equivalent qualification in a relevant field (e.g., life sciences, clinical research, or a related discipline). At least 1 year of experience in a similar role, with a skill set aligned to relevant clinical trial experience or equivalent. Understanding of Good Clinical Practice (GCP) standards. Fluency in English, both spoken and written. Strong verbal and written communication skills. Proficiency in MS SharePoint and other Microsoft Office products (Word, Excel, Outlook, PowerPoint, MS Project), as well as eTMF systems. Experience in a CRO or pharmaceutical setting. Excellent interpersonal and organizational skills, with the ability to collaborate effectively and manage multiple priorities within a matrix environment. Highly organized and detail oriented. Ability to work independently, effectively prioritize tasks, and perform activities in a timely and accurate manner. Proven ability to manage multiple projects simultaneously. WE OFFER Full-time, permanent contract. Flexible hybrid office-home based (with determined visits to the Madrid office). Flexible timetable. A competitive salary according to experience. Health insurance. Opportunities for career development and training. An international working environment, working on international studies. OXON EPIDEMIOLOGY is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We encourage applications from candidates of all backgrounds and do not discriminate based on race, gender, age, religion, disability, sexual orientation, or any other protected status. Join us in building a diverse and talented team OXON is a full service global scientific/operational service provider specialising in multi-country field, database, and hybrid observational studies, pragmatic trials and meta-analysis for safety, market access/HEOR and drug development. We have strong links with the prestigious London School of Hygiene & Tropical Medicine, and Oxford University, and are a preferred provider for several top-20 pharma companies. With offices in London and Madrid, OXON applies world-class epidemiological and operational experience and innovative technologies to help clients worldwide obtain high-quality (Lancet-hitting) real-world data with a passion for improving patient’s and public health. For more information, visit #J-18808-Ljbffr