Alexion employees working in a lab


Every Day, We Serve People With Rare Diseases

At Alexion, we are innovators, leaders, and collaborators. And at the heart of everything we do is an intense desire to pursue the toughest challenges and truly change the world for people living with rare and devastating diseases.

Why We Work

Our intimate patient connection is driven by our focus on devastating and rare diseases. We discover, develop and deliver treatment options for those who have heard “no” for far too long. For this small pool of individuals, we may be their last hope. Our mission to deliver medical breakthroughs is propelled by our commitment to transform lives – we push ourselves every day so that patients can finally hear “yes.”

What We Achieve

We are incredibly proud that our work has been recognized globally through some of the industry’s highest honors, including the Prix Galien Award for SOLIRIS® (eculizumab) and KANUMA® (sebelipase alfa).

Learn more about our award-winning medicines and pipeline.


Why Choose Alexion?

There are many factors that set Alexion apart from other biopharmaceutical companies, but above all is the intimate connection we share with people living with rare diseases. They are our Guiding Star and they inspire us every day to find answers to the most complex scientific challenges.

The Highest Standards

By operating with the highest standards of ethics and integrity, we aspire to live up to the expectations of patients, physicians, and ourselves, and to earn trust in our communities.


We encourage diversity of backgrounds and ideas. We genuinely care for and respect each other, working together as a high-performing team to deliver extraordinary results while embracing different perspectives.


The dedication and passion of our employees enable us to stay focused on what matters most. We push ourselves to achieve the highest level of medical innovation, and to redefine what it means to live with a rare disease.

Our Global Reach

To make a difference to patients throughout the world, our people work throughout the world.

Boston, MA

In June 2018, Alexion opened its new headquarters in Boston, Mass., which will provide the company with access to a large biopharmaceutical talent pool and a variety of life-sciences partners to further support future growth initiatives. Boston is the primary site for Business Development, Communications, Commercial, Strategy, Development and Legal activity, and many other functions, including Compliance, Finance, Global Operations and Quality, Global Government Affairs, and Human Resources, have a presence in Boston.

New Haven, CT

New Haven is the Company’s Center of Excellence for its world-class complement research and process development teams, which are dedicated to advancing Alexion’s innovation engine. The positions based in New Haven include employees working in the research and process development laboratories, the clinical supply and quality teams, nurse case management and a number of important enterprise business services.


Alexion has approximately 2,500 employees around the globe and serves patients in more than 50 countries. There are limitless opportunities for talented individuals to work across functions and geographies, taking on new challenges and building the future of the company.

Learn more about our global opportunities

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Justice, diagnosed with aHUS at 9 months old, with his parents
I appreciate all of the little things like taking Justice to the store, or taking him to the park, or going to parades. Every day is a very big blessing for us.”