What Does a Cardiac Tech Do? A Complete Career Guide for 2025
17 Nov, 2023
If you've been exploring non-clinical healthcare careers, you've likely come across the medical science liaison (MSL) role and wondered what it actually involves day to day. I've spent years helping healthcare professionals navigate career transitions on our platform, and I can tell you that medical science liaison job duties represent one of the most misunderstood — yet rewarding — career paths in the pharmaceutical and biotech industries. Whether you're a pharmacist, nurse practitioner, or PhD researcher looking for a change, understanding exactly what an MSL does is your first step toward landing one of these coveted positions.
The MSL role sits at the fascinating intersection of science, medicine, and business. Unlike traditional sales roles, MSLs serve as scientific experts who build relationships with key opinion leaders (KOLs), present complex clinical data, and help bridge the gap between pharmaceutical companies and the medical community. According to the Bureau of Labor Statistics, employment in medical scientist roles — which includes positions like MSLs — is projected to grow 10% from 2022 to 2032, much faster than the average for all occupations. That growth is creating real opportunities for healthcare professionals ready to make a move.
Let me break down the primary responsibilities that define the MSL role. When I talk with hiring managers in pharma and biotech through healthcareers.app, these are the duties they consistently highlight as essential to the position.
The cornerstone of the MSL role is developing meaningful, peer-to-peer scientific relationships with key opinion leaders. These are the physicians, researchers, and academic leaders who shape treatment guidelines and influence how medicine is practiced in their therapeutic areas. MSLs don't sell products — they engage in scientific exchange. This means:
A significant portion of medical science liaison job duties revolves around presenting clinical and scientific data. MSLs regularly:
This is where having an advanced scientific degree truly pays off. MSLs need to understand complex data at a granular level and translate it into meaningful clinical context for practicing physicians.
MSLs play a critical role in supporting their company's clinical development programs. This includes:
Within their organizations, MSLs serve as the therapeutic area experts. They train sales teams on disease states (without crossing into promotional territory), provide scientific input on marketing materials for medical-legal-regulatory review, and contribute to publication planning. Their internal contributions are just as valuable as their field-based activities.
MSLs typically manage large geographic territories and must be highly self-directed. They develop territory plans, prioritize KOL engagement, track metrics, and report insights back to the medical affairs leadership team. Travel is substantial — most MSL roles require 60-70% travel, which is something every candidate should consider carefully.
I want to be straightforward about what it takes to break into this field because I see a lot of misinformation online. Here's what you genuinely need.
An advanced degree is essentially non-negotiable. Most MSL job postings require:
According to the National Institutes of Health, advanced training in biomedical sciences provides the foundational knowledge necessary for roles that require interpreting and communicating complex clinical research — and the MSL role is a prime example of this.
Beyond the degree, successful MSLs possess:
One of the biggest draws of the MSL career is the compensation. Based on industry surveys and data we've analyzed at healthcareers.app, here's a realistic breakdown for 2025:
Total compensation — including bonuses, stock options, car allowances, and benefits — can push these figures significantly higher. It's worth noting that compensation varies by therapeutic area, company size, and geographic location. MSLs working in oncology and rare diseases tend to command the highest salaries.
I often get asked how the MSL path stacks up against other healthcare career options. Let me provide some context by comparing it to a couple of roles that candidates frequently explore on our platform.
When healthcare professionals explore career options, they often ask, what are rad techs? Radiologic technologists — commonly called rad techs — are allied health professionals who perform diagnostic imaging procedures such as X-rays, CT scans, and mammograms. It's a rewarding clinical career with a median annual salary of approximately $65,140, according to the Bureau of Labor Statistics. While rad techs enjoy stable employment and meaningful patient interaction, the MSL role offers a dramatically different career trajectory — one that's non-clinical, involves extensive travel, and provides substantially higher compensation. The educational investment differs significantly too: rad techs typically need an associate's or bachelor's degree, while MSLs require doctoral-level education.
Another area candidates frequently research is ophthalmic salary data. Ophthalmic technicians and technologists earn varying salaries depending on their certification level, with median pay ranging from $38,000 to $55,000 annually for technicians and higher for certified ophthalmic medical technologists. Some ophthalmic professionals explore the MSL pathway — particularly those who pursue advanced degrees — because pharmaceutical companies developing eye care therapies need MSLs with ophthalmology expertise. If you have a clinical background in ophthalmology and an advanced degree, you could be uniquely positioned for MSL roles in companies focused on retinal diseases, glaucoma treatments, or gene therapies for inherited eye conditions.
To give you a realistic picture, here's what a typical week might look like for an MSL:
Monday: Review recent publications in your therapeutic area. Prepare a slide presentation for an upcoming KOL meeting. Participate in a team call with your medical affairs director to discuss territory strategy.
Tuesday-Wednesday: Travel to an academic medical center. Conduct a scientific exchange meeting with a key oncologist about recent Phase III trial data. Meet with a clinical investigator to discuss a potential investigator-initiated study.
Thursday: Attend a regional medical conference. Network with healthcare providers, present a poster, and gather competitive intelligence. Document all interactions in your CRM.
Friday: Work from home. Complete administrative tasks, update your territory plan, prepare for next week's advisory board, and respond to medical information requests.
This rhythm — balancing scientific depth with relationship management and travel logistics — is what makes the MSL role both exhilarating and demanding.
Breaking into the MSL field without prior industry experience is the biggest challenge I hear about from candidates on healthcareers.app. Here's my practical advice:
No — and this is a common misconception. MSLs are explicitly non-promotional roles. In fact, many companies prefer candidates without sales backgrounds because they want to maintain the scientific credibility of the position. What you do need is the ability to build relationships, communicate effectively, and engage in peer-level scientific discussions with physicians and researchers.
From what I've heard from thousands of healthcare professionals who've transitioned into MSL roles, the most challenging aspects are the extensive travel (typically 60-70% of your time) and the ambiguity of the role. Unlike clinical positions where your daily tasks are clearly defined, MSLs must be highly self-directed, create their own schedules, and demonstrate value through metrics that can sometimes feel intangible.
Absolutely. Nurses with advanced degrees — particularly DNPs or those with PhDs in nursing science — are increasingly being hired as MSLs. Nurse practitioners with deep therapeutic area expertise in fields like oncology, cardiology, or rare diseases are especially competitive candidates. Your clinical experience interacting with patients and physicians translates directly into the relationship-building skills MSLs need.
The timeline varies depending on your starting point. If you already hold a PharmD, PhD, or MD, you could potentially transition into an MSL role within 6-12 months with focused networking and preparation. If you're earlier in your education, you're looking at completing your advanced degree first, which could take 4-8 years depending on the program. Some professionals complete MSL fellowships (typically 1-2 years) immediately after their doctoral training.
Yes — and the career progression is excellent. MSLs can advance to Senior MSL, Executive MSL, MSL Team Lead, or Medical Affairs Director positions. Many MSLs eventually move into roles like Head of Medical Affairs, VP of Medical Strategy, or Chief Medical Officer. The skills you develop — scientific communication, strategic thinking, stakeholder management — are transferable across the pharmaceutical and biotech industries.
Understanding medical science liaison job duties is the first step in determining whether this career aligns with your goals, strengths, and lifestyle preferences. The MSL role offers an extraordinary combination of scientific engagement, professional autonomy, competitive compensation, and meaningful impact on patient care — albeit indirectly. It's not for everyone. The travel is real, the role requires constant self-motivation, and the transition from clinical practice can feel disorienting at first.
But if you're a scientifically driven healthcare professional who loves learning, building relationships, and communicating complex ideas — and you have or are pursuing an advanced degree — the MSL career could be one of the most rewarding moves you'll ever make. We built healthcareers.app to help healthcare professionals like you find their ideal path, whether that's in clinical care, allied health, or industry roles like the MSL. I encourage you to explore the opportunities available and take that first step toward the career you deserve.
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