Biochemist Research Scientist

SoseiHeptares Cambridge United Kingdom

Company Description

Sosei Heptares is an international biopharmaceutical company with a mission to make a significant contribution to improving the quality of life and health of people around the world. To achieve this, we will discover, design, and develop the most innovative and effective medicines for patients worldwide, through our world-leading patent-protected technology and platform.

Our core focus is on the discovery and early development of new medicines originating from our proprietary G Protein-Coupled Receptor (GPCR) targeted StaR® technology and Structure Based Drug Design (SBDD) platform capabilities. Today, we are advancing a broad and deep pipeline of novel medicines across multiple therapeutic areas, including neurology, immunology, gastroenterology, and inflammation diseases.

We have established partnerships with some of the world’s leading pharmaceutical companies and multiple emerging technology companies, including AbbVie, AstraZeneca, Biohaven, Genentech (Roche), GSK, Neurocrine Biosciences, Novartis, Pfizer, Takeda and Verily.

Sosei Heptares is headquartered in Tokyo, Japan with corporate and R&D facilities in London and Cambridge, UK. We have approximately 170 employees based at our state-of-the-art R&D research centre at Granta Park, Cambridge. The size of our company ensures optimum agility and transparent linkage between all activities from early discovery through to clinical development.

For more information, please visit LinkedIn: @soseiheptaresco | Twitter: @soseiheptaresco | YouTube: @soseiheptaresco


We are now seeking a membrane protein biochemist to join the Biochemistry group at our research facility on Granta Park, Cambridge, UK, working on membrane protein biochemical characterisation to enable drug discovery efforts.

At Sosei Heptares we are equipped with state-of-the-art protein expression, purification, SPR, mass-spectrometry, crystallisation and cryoEM facilities. Applicants should have experience in the expression and purification of challenging membrane proteins destined for biochemical, biophysical and structural studies. Applicants with a proven track record of publications related to the expression, purification, and biochemical characterisation of difficult membrane protein targets in peer-reviewed journals would be advantageous.

This is an exceptional opportunity to participate in pioneering science with an industry-leading drug discovery company.

The successful candidate is expected to:

  • Express and purify membrane proteins
  • Perform appropriate quality control analyses and biochemically and biophysically characterise purified membrane proteins
  • Keep up to date, propose, develop, implement and optimise new techniques in the fields of membrane protein expression, purification and biochemical characterisation
  • Work together with scientists responsible for successfully progressing membrane protein targets through Sosei Heptares’ structure-based drug design pipeline
  • Collaborate with other Sosei Heptares scientists on research projects, working closely with molecular biologists, biophysicists, structural biologists, molecular pharmacologists, computational and medicinal chemists
  • Prepare and effectively present results (written and oral) to project teams
  • Have strong interpersonal skills and interact effectively with collaborators across a wide range of disciplines


The preferred candidate will have the following:

  • A PhD in biochemistry, biophysics, or a related discipline
  • Good molecular biology skills
  • Knowledge in prokaryotic and eukaryotic expression vectors
  • Knowledge in expression construct design and engineering to successfully express membrane proteins destined for biochemical, biophysical, and structural studies
  • Expertise in the expression of membrane proteins from mammalian and insect cells
  • Expertise in the purification and extensive biochemical characterisation of membrane proteins
  • Experience in the reconstitution of purified membrane proteins in membrane-mimetic environments
  • Familiarity with biochemical and biophysical techniques used to characterise membrane proteins such as luminescence, fluorescence, and FRET-based techniques
  • Understanding of the requirements of purified membrane proteins destined for structural (X-ray and/or CryoEM) and biophysical studies (SPR, mass spectrometry)
  • Excellent organisational skills

What’s in it for you?

  • State-of-the-art R&D centre located in the heart of the Cambridge science cluster
  • Competitive compensation package including discretionary cash bonuses
  • Eligible for grants of Restricted Stock Units in Sosei Group Corporation
  • 25 days annual leave in addition to public holidays
  • Employer contribution to pension
  • Private Medical Insurance and a cash plan for dental and optical reimbursement
  • Health and wellbeing benefits including a subsidised individual gym membership
  • Income protection to cover long term absences due to ill health
  • Group Death in Service equal to 4x basic annual salary

Why Sosei Heptares?

At Sosei Heptares, we are dedicated to the pursuit of scientific innovation. Our mission is to make a significant contribution to improving the quality of life and health of people around the world. To achieve this, we will discover, design, and develop the most innovative and effective medicines for patients worldwide, through our world-leading patent-protected technology and platform

Working at Sosei Heptares

The Sosei Heptares R&D centre is a modern, state-of-the-art centre located within easy shuttle reach of Cambridge and Whittlesford Parkway train stations. We offer a collaborative, diverse and inclusive working environment that considers your individual needs and believes in maintaining a sustainable work-life balance. You will be welcomed by a team of colleagues with decades of accumulated experience in their areas of expertise, happy to help you develop your own skills in a highly collaborative environment and who are keen to provide guidance and support in your personal and career development plans.

Our Vision and Values

To become one of Japan’s science and technology-led biopharmaceutical drug discovery champions. To achieve this, we will leverage our global know-how and operating agility to deliver a sustainable pipeline of first or best-in-class therapeutics, ensuring our place amongst the next generation of leading innovators.

We are guided by three fundamental values.

  • Limitless Compassion
  • Unswerving passion
  • Continuous self-innovation

These unchanging set of core values that serves as a guide across all our activities

Join Us!

Other information

The successful candidate will be employed by Heptares Therapeutics Ltd, a UK wholly owned subsidiary of Sosei Group Corporation.

Sosei Heptares is committed to building a diverse and ambitious workforce, and to promoting equal opportunities in employment. We recognize that diverse and inclusive teams build a stronger and more innovative company. Therefore, all qualified applicants will be considered for employment: we do not discriminate based on age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, sexual orientation, or any other classification prescribed by law.

Applications should include a CV and covering letter, providing a short description of the background of your interest in the role, and apply via our on-line jobs’ portal: in pdf format, quoting reference number 2022-RS-Biochemist. Closing date for applications is 31st January 2023.

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Heptares Therapeutics Limited (‘Heptares’), will collect and store personal information submitted via this recruitment website. Please read the following privacy policy to understand how Heptares uses and protects your information. The online recruitment system is provided and hosted by CezanneHR and its third party supplier. By submitting your personal information, you are consenting to Heptares holding and using it in accordance with this policy. The policy is subject to change and any changes to it in the future will be notified on this page. By continuing to use this recruitment site you are agreeing to such changes.

Information you give to us

When you apply for a position, you will be asked to provide certain information much of this will be contained in your curriculum vitae, including your name, contact details, date of birth and job history. Some of the information is mandatory in order for Heptares to consider an application for a vacancy or to meet its statutory reporting responsibilities. However, where indicated, some of the information is optional.

How we handle the data that is submitted by you

Personal data is collected to facilitate the recruitment process and may be used for anonymised reporting purposes. Data entered as part of an application is stored in the system and will be made available to an applicant to ‘reuse’ as part of a future application. Please be aware that Heptares uses a third party supplier to hold the information you submit. The third party company complies with data protection regulations and will not share your data with anyone other than Heptares. In the event your application results in your recruitment to a role at Heptares, your personal information will be transferred to the Heptares staff database.

Data Protection Statement

The personal data you provide in your application and as part of the recruitment process will only be held and processed for the purpose of the selection processes of Heptares and in connection with any subsequent employment or placement. Your data will be retained only for as long as is permitted by UK legislation and then destroyed. By submitting your personal data and application, you: (1) declare that you have read, understood and accepted the statements set out in this data protection clause; (2) are declaring that the information given in the application is complete and true to the best of your knowledge, and understand that deliberate omissions and incorrect statements could lead to your application being rejected or to your dismissal; and, (3) are giving your consent to the processing of the information contained in this application and any other personal data you may provide separately in the manner and to the extent described.

Data Retention

Unsuccessful applicant data will be held within the recruitment system for a period of two years before being deleted, which will permit you to access and re-use data in future applications and we will be able to respond to statutory reporting requests.

How to contact us

For any queries you may have in connection with this privacy statement, please contact:

Head of HR, BioPark, Welwyn Garden City, Hertfordshire AL7 3AX

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