AstraZeneca Posted August 26, 2026

Medical Science Liaison Rare Diseases

Sofia, Bulgaria Full time
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AstraZeneca is the source of truth for this posting and owns the application process. We surface normalized context and market comparison you won't find on the original listing.

About this opportunity

Medical Science Liaison (MSL) – Rare Diseases

Bulgaria

Join AstraZeneca and Help Transform Patient Outcomes

At AstraZeneca, we are driven by science and inspired by patients. Our Rare Diseases team is dedicated to delivering life-changing medicines and advancing innovative therapies that address unmet medical needs. We are seeking a passionate and scientifically driven Medical Science Liaison (MSL) to support our Rare Diseases portfolio across Bulgaria.

As a field-based scientific expert, you will build trusted partnerships with healthcare professionals, key opinion leaders, and other external stakeholders while providing scientific and clinical expertise that helps advance patient care and strengthens AstraZeneca's leadership within rare diseases.

What You'll Do

As a Medical Science Liaison, you will:

Act as the scientific expert and primary medical liaison for healthcare professionals within the designated therapeutic area.

Build and maintain strong relationships with Key Opinion Leaders (KOLs), researchers, and influential stakeholders.

Facilitate scientific exchange regarding clinical data, research findings, and AstraZeneca products in accordance with local regulations and compliance standards.

Provide medical and scientific insights to internal cross-functional teams, including Medical, Commercial, Regulatory, Clinical Operations, Patient Safety, and Market Access colleagues.

Identify emerging scientific trends, treatment gaps, and opportunities within the local healthcare landscape.

Support the planning and execution of local and regional studies, investigator-initiated research, and publication activities.

Collaborate with internal and external experts on scientific publications as a moderator and/or co-author.

Deliver scientific training and educational programs for healthcare professionals and AstraZeneca colleagues.

Contribute to continuing medical education initiatives and scientific congress activities.

Assist with clinical trial activities, including scientific support, feasibility assessments, site identification, and operational guidance where appropriate.

Respond to medical information inquiries with high scientific and medical quality standards.

Monitor competitor activities and maintain deep knowledge of disease areas, treatment landscapes, and scientific developments.

Support launch readiness activities and the introduction of new therapeutic areas and products.

Ensure all activities are conducted in line with AstraZeneca's Code of Ethics, compliance standards, and applicable pharmaceutical regulations.

Essential Requirements

University degree in Medicine, Pharmacy, Biomedical Sciences, or a related life sciences field.

Strong scientific knowledge and understanding of clinical research principles.

Excellent communication and presentation skills with the ability to convey complex scientific information to diverse audiences.

Fluent English language skills.

Strong digital literacy and proficiency with standard business applications.

Valid driving licence and willingness to travel extensively within the assigned territory.

Preferred Experience

Experience within the pharmaceutical industry.

Knowledge of Rare Diseases or relevant therapeutic areas.

Clinical practice, research, or healthcare experience.

Understanding of pharmaceutical industry regulations and compliance requirements.

Experience engaging with healthcare professionals, researchers, or medical experts.

Key Competencies

Scientific curiosity and continuous learning mindset.

Excellent relationship-building and stakeholder management skills.

Strategic thinking and business awareness.

Strong organisational and project management capabilities.

Patient-centric approach.

Collaborative team player with cross-functional working experience.

Innovative mindset with the ability to identify opportunities and solve complex challenges.

Why AstraZeneca?

At AstraZeneca, you will be part of a purpose-driven organisation where innovation, collaboration, and scientific excellence come together to improve the lives of patients around the world. You'll have the opportunity to work alongside leading experts, contribute to groundbreaking research, and help shape the future of healthcare in rare diseases.

Ready to make a meaningful impact? Apply today and join AstraZeneca in transforming the lives of patients with rare diseases.

Date Posted

01-Oct-2026

Closing Date

07-Oct-2026

AstraZeneca embraces diversity and equality of opportunity.  We are committed to building an inclusive and diverse team representing all backgrounds, with as wide a range of perspectives as possible, and harnessing industry-leading skills.  We believe that the more inclusive we are, the better our work will be.  We welcome and consider applications to join our team from all qualified candidates, regardless of their characteristics.  We comply with all applicable laws and regulations on non-discrimination in employment (and recruitment), as well as work authorization and employment eligibility verification requirements.

Job details

Seniority
Not listed
Function
Medical Affairs
Therapeutic area
Rare Disease
Location
Sofia, Bulgaria
Employment type
Full time

How this role compares

Computed from every other active Medical Affairs role in our database, not just this employer's listings.

We currently track 1124 comparable Medical Affairs roles across 161 biopharma companies.

1124Comparable roles tracked
1036Currently active
161Companies hiring similar roles
56Countries represented

Salary context

285 of 1124 peers report a salary range (USD, annualized)

Peers share this role's job function. This posting doesn't list a seniority level, so peers aren't narrowed by seniority either -- the range below may span more levels than usual.

This roleSubject Not listed on this posting
Lowest disclosed · 2027 Future Talent Program - Global Medical Affairs - Intern · Merck $39,908/yr – $111,111/yr
Peer group range $75,510 – $454,000 (median $231,700)

Where these roles are based

Top locations among the 1124 comparable roles

United States524
Japan76
China52
China's Mainland51
Germany50
United Kingdom45

+ 50 more countries

Seniority mix

688 of 1124 peers have a known seniority level

Director200
Senior147
Manager136
Associate Director61
Associate60
Executive/VP32
Senior Director23
Intern/Fellow/Postdoc22
Principal7

Therapeutic area mix

381 of 1124 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Oncology150
Neuroscience51
Immunology33
Rare Disease33
Cardiovascular / CVRM32
Dermatology & Aesthetics32
Vaccines & Infectious Disease20
Respiratory19
Gastroenterology8
Ophthalmology3

Similar opportunities

The closest matches from our peer group, ranked by how similar they are, not how well you'd qualify for them -- treat this as market context, not a guaranteed shortlist; a weak match is labeled as one below.

65%similar
Amgen Inc. Remote, United States Director
Same function Same therapeutic area
65%similar
Sanofi-Aventis Deutschland GmbH Frankfurt am Main, Germany Intern/Fellow/Postdoc
Same function Same therapeutic area
65%similar
Amgen Inc. Tampa, United States
Same function Same therapeutic area
65%similar
UCB Charlotte, North Carolina, United States
Same function Same therapeutic area
65%similar
UCB Washington, District of Columbia, United States
Same function Same therapeutic area
65%similar
UCB Richmond, Virginia, United States
Same function Same therapeutic area

Notify me about similar jobs

Get an email when we spot other openings like this one – same job function, comparable seniority, roles you'd actually want to see.

How we calculate "similar"

No black box, no LLM guesswork: a deterministic score built from four normalized attributes. Here's this role's own peer group at different match levels, so you can see the mechanism, not just the result.

Every comparison starts from the same 100-point budget: 25 for working in the same function, 40 for the same therapeutic area, 20 for the same or adjacent seniority, 15 for the same country. A dimension we can't confirm on both sides contributes nothing, never a guess, never a free pass.

65%
Global Safety Medical Director, Rare Disease
Amgen Inc. · Remote, United States · Director
Function Therapeutic area Seniority Country
65%
Medical Science Liaison Rare Disease/ Mid Altantic
UCB · Charlotte, North Carolina, United States · Seniority not listed
Function Therapeutic area Seniority Country
65%
Medical Science Liaison Rare Disease/ Mid-Altantic Sr.
UCB · Charlotte, North Carolina, United States · Senior
Function Therapeutic area Seniority Country
65%
Senior Medical Science Liaison, Rare Diseases - West
Otsuka Pharmaceutical Development and Commercialization, Inc. · Remote, United States · Senior
Function Therapeutic area Seniority Country
Unmatched or unknown dimensions score exactly the same: 0 points, never a partial guess. A role we know almost nothing about beyond its function bottoms out at 25%; it never inflates to 100% just because there's little to compare against. Seniority uses a defined ladder (Associate → Manager → Associate Director → Senior → Principal → Director → Senior Director → Executive/VP) so "Director" and "Senior Director" count as adjacent, but "Director" and "Executive/VP" do not.