Ambitious
Every day, OMassians do incredibly meaningful work, supported by a talented and caring team.
We’re at the start of a new and exciting chapter and we’re growing. For scientists, we’re a place to do truly pioneering research and development alongside world-class experts. For non-science folk, we know our work plays a vital role in discovering new therapies that can make a real difference to people’s lives.
Find out how you could make an impact here:
Find out more by downloading a copy of our employee value proposition here.
OMASS
Meet some of our world-class experts
Chief Executive Officer
Chief Scientific Officer
Chief Business Officer
VP, Clinical
VP Platforms
Executive Assistant
Director, Medicinal Chemistry
Senior Director, Strategy
Senior Director, Translational Biology
Financial Controller
Associate Director
Principal Scientist
Senior Director, Computational Chemistry
Senior Scientist I
Senior Scientist II
Principal Scientist
Senior Scientist I
Senior Scientist II
Senior Scientist II
Senior Scientist II
Senior Scientist II
Human Resources Advisor
Senior Scientist II
Principal Scientist
VP, Finance
SVP of Discovery and Non-Clinical
Senior Scientist I
Senior Scientist II
Senior Scientist I
Assistant accountant
Senior Scientist I
Director DMPK
Senior Scientist I
Scientist II
Senior Scientist I
Senior Scientist I
Laboratory Technician
Scientist II
Senior Director, People and Operations
Scientist II
Senior Director, CMC
Senior Scientist I
Principal Scientist
Executive Assistant
Director, R&D Project Manager
Scientist II
Principal Scientist
Senior Scientist II
Senior Finance Associate
Industrial Placement Student
Associate Director
IT Director
Rosamond Deegan
Chief Executive Officer
As CEO I enjoy developing strategy, managing the Board and engaging our team. I am focused on making a difference to patients with orphan and immunological disease.
Born England |
Joined 2019 |
Fun Fact Table Football Aficionado
Steven Charlton
Chief Scientific Officer
As VP Pharmacology I am proud to lead an excellent team of pharmacologists and immunologists as we validate new targets and identify the optimal compounds for their therapeutic modulation.
Born United Kingdom |
Joined 2020 |
Fun Fact Passionate about live music
Melissa Faris
Chief Business Officer
As Chief Business Officer I lead Business Development and Commercial for OMass with a passion to continually maximize the value of our assets and proprietary drug platform.
Born US |
Joined 2023 |
Fun Fact Most days I am Genius at NYT spelling bee
Steve Griffen
VP, Clinical
As the head of Clinical Development, I strive to help our incredible team develop new medicines that address health issues important to people living with disease.
Born USA |
Joined 2024 |
Fun Fact One time camp counselor who kissed a banana slug
Jonathan Hopper
VP Platforms
As VP Platforms and Founder, it has been a privilege to help OMass grow and transform into a drug discovery company with the potential to truly impact patients with immunological diseases.
Born England |
Joined 2016 |
Fun Fact Snowboarding
Hayley Davies
Executive Assistant
As Executive Assistant to the CEO, CSO and CBO, I am a fundamental part of the Corporate team, providing support for the smooth running of the Executive team diaries whilst also supporting the wider Management team.
Born England |
Joined 2018 |
Fun Fact I have a poem published in a children’s book.
Adam Jan Sanderson
Director, Medicinal Chemistry
As Director of Medicinal Chemistry, I enjoy helping the team turn weakly active compounds into potent safe human medicines.
Born England |
Joined 2021 |
Fun Fact Recently learned to sail and wake surf (not at the same time)
Miguel Silva
Senior Director, Strategy
As Strategy Director, I enjoy thinking about the best path forward for our programs and how we can make the biggest difference to patients.
Born Portugal |
Joined 2020 |
Fun Fact Previous 2x office ping pong champion
Karolina Gherbi
Senior Director, Translational Biology
As a molecular pharmacologist, I am committed to discovering novel therapeutics to improve patients’ lives.
Born Bulgaria |
Joined 2020 |
Fun Fact STEM Enthusiast
Chudar Rameshwaran
Financial Controller
As Financial Controller, I lead the finance function and I am responsible for maintaining all the financial systems, as well as supporting the wider success of the business.
Born Sri Lanka |
Joined 2021 |
Fun Fact Can stand on one leg for an absurd period of time
Laia Malet Sanz
Associate Director
As a Medicinal Chemist, I really enjoy generating new hypothesis to improve our molecules, testing them and rationalising the results. Ultimately, I aim to add value to our projects and deliver successful clinical candidates.
Born Spain |
Joined 2020 |
Fun Fact As well as spending time with my family, I like sport and used to play Table Tennis
Maria Musgaard
Principal Scientist
As a computational chemist, I am focused on developing models for understanding and predicting the interactions between potential drugs and their biological targets as well as contributing to designing new potential drug molecules.
Born Denmark |
Joined 2021 |
Fun Fact Often seen on the river in a kayak or on a stand-up paddle board
Benjamin Tehan
Senior Director, Computational Chemistry
As head of Computational Chemistry, I utilise and empower computational means to enable more intelligent decisions faster.
Born Australia |
Joined 2019 |
Fun Fact Can shear sheep
Elvira Diamantopoulou
Senior Scientist I
As a Senior Scientist in pharmacology, I enjoy developing new cell-based assays suitable for high-throughput screening. I am passionate about using robotic systems to automate my assays and working towards shared goals.
Born Greece |
Joined 2019 |
Fun Fact Netflix enthusiast
Kathy Sengmany
Senior Scientist II
As a senior scientist, I enjoy being a part of a diverse, collaborative team, working towards developing treatments for orphan and immunological diseases.
Born Australia |
Joined 2019 |
Fun Fact Enjoys walks through the English countryside
Kleitos Sokratous
Principal Scientist
As a Senior Scientist, I enjoy working on the development of high-resolution native mass spectrometry technology tailored for high-throughput drug screening.
Born Cyprus |
Joined 2019 |
Fun Fact Gliding
Laurence Towner
Senior Scientist I
As a Senior Scientist, I am driven by a fascination with the profound influence of the immune system on heath and disease and to find ways to modulate it to benefit patients’ lives.
Born England |
Joined 2021 |
Fun Fact Keen musician and songwriter
Mark Soave
Senior Scientist II
As a Senior Scientist, I am focused on delivering high quality research, contributing to OMass' efforts in tackling orphan and immunological diseases.
Born Germany |
Joined 2021 |
Fun Fact I direct and sing with a Barbershop Chorus
Rachael Skyner
Senior Scientist II
As a cheminformatician, I am focused on complementing the work of experimentalists by finding new and interesting ways to analyse data and make new predictions.
Born United Kingdom |
Joined 2021 |
Fun Fact Board game geek
Shahid Rehan
Senior Scientist II
I’m passionate about doing a curiosity driven and impact-oriented science in the lab.
Born Pakistan |
Joined 2021 |
Fun Fact Travel, hiking, cricket
Viviane Mignone
Senior Scientist II
As Senior Scientist I enjoy developing new assays, finding the best way to address questions that come along with the projects. I am proud to be part of such a collaborative team, focused on delivering new treatments for patients with immunological diseases.
Born Brazil |
Joined 2019 |
Fun Fact Love Volleyball
Lauren Ross
Human Resources Advisor
As a HR Advisor, I am passionate about supporting employees and contributing to organisational success. I take pride in facilitating effective recruitment and onboarding processes that strengthen teams and promote long-term growth. I also work closely with line managers to support their development, providing guidance and tools to help them lead effectively and foster high-performing teams.
Born England |
Joined 2022 |
Fun Fact I enjoy running and crime documentaries.
Srinath Krishnamurthy
Senior Scientist II
As a Senior Scientist at OMass, I enjoy tackling and solving 'complex' problems. I am excited to contribute towards the development of drugs against challenging targets and orphan diseases.
Born India |
Joined 2022 |
Fun Fact I love racquet sports, hiking, long board games and ridiculously long fantasy fiction books.
Christine Oswald
Principal Scientist
As a Principal Scientist in the Protein Biochemistry & Structural Biology department I am contributing to a better understanding of ligand-protein interactions in order to develop new medicines.
Born Germany |
Joined 2022 |
Fun Fact Acted in an Indian movie
Elias Hamida
VP, Finance
As the Associate Director, Financial Planning and Analysis I am focused on helping develop financial planning processes, alongside other Finance-related projects to ultimately help OMass reach its objective to discover new drugs to treat orphan and immunological disease.
Born England |
Joined 2022 |
Fun Fact Trilingual
Jonathan Roffey
SVP of Discovery and Non-Clinical
As VP, Medicinal Chemistry, I focus on enabling the journey of a therapeutic hypothesis to the development of a new medicine for patients.
Born England |
Joined 2022 |
Fun Fact I am a keen outdoor swimmer
Charlie Lay
Senior Scientist I
As a pharmacologist supporting the programs at OMass, I am proud to be part of a highly skilled team developing new medicines for unmet needs.
Born England |
Joined 2022 |
Fun Fact I brew my own beer
Mario Hensen
Senior Scientist II
As a Senior Scientist I enjoy working on membrane- and membrane-associated proteins, focusing on their better understanding using state-of-the-art technology, always driven by the wish to help and improve the life of patients with immunological and orphan diseases.
Born Germany |
Joined 2022 |
Fun Fact I am planning to build a wooden toaster
Alex Wilkinson
Senior Scientist I
As a Scientist II, I am passionate about delivering high-quality research with translational impact for patients with orphan and immunological diseases.
Born England |
Joined 2022 |
Fun Fact I enjoy cooking, hiking and aerial silks.
Tina Bateman
Assistant accountant
As Assistant accountant, I enjoy working as part of the finance team, and strive to provide help and support others in the workplace.
Born England |
Joined 2022 |
Fun Fact I love F1 and followed since I was 16.
Cameron Harper
Senior Scientist I
As a medicinal chemist I enjoy designing compounds based on data, with the ultimate goal being to find a compound that could transform patients' lives.
Born England |
Joined 2023 |
Fun Fact I swing a golf club right-handed, but with a left-handed grip.
Donna Smith
Director DMPK
As Director DMPK I am proud to make a difference in developing novel therapies to patients with orphan diseases.
Born England |
Joined 2023 |
Fun Fact Handy vintage dressmaker
Raphael Reinbold
Senior Scientist I
As Senior Scientist in the Protein Biochemistry & Structural Biology team I am working on the production and characterisation of various proteins. I am ultimately driven by the desire to develop new medicines to improve patients’ lives.
Born Germany |
Joined 2023 |
Fun Fact I love football and tennis; I have an allotment together with 2 friends.
Beatrice Manzan
Scientist II
As a passionate Scientist II and immunologist at OMass, my focus is on delivering impactful research and developing novel therapeutics for orphan and immunological diseases. I take pride in being part of a skilled team dedicated to translating emerging knowledge into innovative therapies to contribute towards improving the lives of patients.
Born Italy |
Joined 2023 |
Fun Fact I love dogs (especially Corgis), HipHop and Nutella.
Feng Qu
Senior Scientist I
As a Senior Scientist, I enjoy tackling challenging membrane protein targets.
Born China |
Joined 2023 |
Fun Fact I play the bamboo flute.
Elliot Nelson
Senior Scientist I
As a research software engineer, I strive to make it easy and efficient for scientists to understand, view and use their data.
Born England |
Joined 2023 |
Fun Fact I walked 100km in one go for charity.
Abril Arredondo
Laboratory Technician
As a Lab Technician, I enjoy being part of a team while having my own set of tasks and research. My focus has been on cell line maintenance for research and optimising protocols.
Born Costa Rica |
Joined 2023 |
Fun Fact Love travelling and baking
Juliana Lima
Scientist II
As a mass spectrometry scientist at OMass, I am excited about investigating biomolecule interactions and being part of the disruptive drug discovery for immunological diseases.
Born Brazil |
Joined 2023 |
Fun Fact I love climbing mountains.
Hanna Machray
Senior Director, People and Operations
As an HR Director, I enjoy supporting employee development and working on strategic HR initiatives. I’m passionate about fostering a positive workplace culture for organisational success
Born England |
Joined 2023 |
Fun Fact I’m training to become a marathon Kayaker.
Dillon Popat
Scientist II
As a pharmacologist, I am passionate about producing high-quality research to characterise proteins involved in immunological and orphan diseases to further OMass' goals of providing therapeutics for these conditions.
Born England |
Joined 2023 |
Fun Fact Passionate Cook, Failed Wood Carver.
Stuart Hadley
Senior Director, CMC
As the Director of CMC I am focused on developing product formulations as well scaling up and manufacturing API and drug products.
Born England |
Joined 2024 |
Fun Fact Theme park enthusiast
Emma Sisley
Senior Scientist I
As a scientist in the mass spectrometry team I enjoy developing native mass spectrometry methods to aid drug discovery.
Born England |
Joined 2024 |
Fun Fact A trail running enthusiast, the muddier the better!
Olivia Robb
Principal Scientist
As a Principal Scientist in DMPK, I enjoy collaborating with colleagues, interrogating, and interpreting data to address complex scientific questions. I am focused on delivering high-quality decision-making data to support the development of new medicines for patients.
Born England |
Joined 2024 |
Fun Fact I love taking street dance, tap, and aerial hoop classes.
Emma Saville
Executive Assistant
In my role as Executive Assistant to Hsin Loke and Office Manager, I ensure the smooth running of the business by supporting the Executive Team in addressing fast-moving priorities. At the same time, I create a people-centric, supportive environment where the team feels cared for, empowered, and enjoy coming to work
Born Australia |
Joined 2024 |
Fun Fact I am a qualified hypnotherapist.
Juliane Schwaderer
Director, R&D Project Manager
As project manager I enjoy driving research projects from early discovery through development, motivated by the goal of developing transformative therapeutics that change patients' lives.
Born Germany |
Joined 2024 |
Fun Fact Collecting cookbooks
George Longmore
Scientist II
As a Scientist II I am motivated to leverage my passion for cell biology alongside OMass’ talented team of researchers to develop cutting edge therapies for immunological diseases with unmet need.
Born England |
Joined 2025 |
Fun Fact I am a former international Volleyball player.
Daniel Burschowsky
Principal Scientist
As a structural biologist I enjoy solving the high-resolution structures of protein/small-molecule complexes that help guide drug design, which will ultimately save and improve lives. Comfortable with X-ray crystallography and cryo-EM alike.
Born Austria |
Joined 2025 |
Fun Fact A very diverse music taste, ranging from black metal all the way to 8-bit metal.
Simon Ellwood
Senior Scientist II
As a medicinal chemist I enjoy designing new molecules to test hypotheses and analyzing the results, with the ultimate goal of creating medicines that can change the lives of patients.
Born England |
Joined 2025 |
Fun Fact Weight lifting enthusiast - can lift the weight of one pygmy hippopotamus
Pritesh Gohil
Senior Finance Associate
As a Senior Finance Associate, I focus on driving innovation within the finance function, ensuring efficiency and continuous improvement.
Born England |
Joined 2025 |
Fun Fact Recently traveled across Vietnam and Thailand, and completed the Barcelona Marathon in March 2025 - with plans for more!
Mili Biggin
Industrial Placement Student
As a Protein Biochemistry Industrial Placement Student, my role is to assist in the expression and purification of soluble proteins for small molecule therapeutics.
Born England |
Joined 2025 |
Fun Fact I am a qualified climbing assistant instructor
Tanya Mullaney
Associate Director
As a preclinical toxicologist I am focussed on safety evaluation, regulatory compliance and risk assessment to support medicine development.
Born England |
Joined 2025 |
Fun Fact I'm writing a book for fun in my spare time.
David Kilburn
IT Director
I have a passion for technology and how it can be used to bring about positive change. I am focused on shaping and delivering digital outcomes to support people to improve their lives and wellbeing.
Born England |
Joined 2025 |
Fun Fact I once accidentally played in a football match again the Dutch national team (and lost); I am an Ironman triathlete; I am currently attempting to learn Arabic – and failing miserably.
Our Values
We’re values-led people
Our Values aren’t just words on a wall, they’re a shared articulation of who we are and who we want to be. Everyone at OMass was involved in developing them, so we know they’re an authentic representation of what we stand for, and we work together to build them into everything we do.
Responsible
Innovative
Focused
Caring
Collaborative
Ambitious
MISSION-DRIVEN • PURPOSEFUL • THINK BIG • PROACTIVE • INTENTIONAL • PATIENT-CENTRED
We are driven by our shared mission to discover, develop and deliver impactful medicines to patients using cutting edge science.
We are motivated to push boundaries and think big as we tackle challenges we confront as a company.
We take a proactive approach towards research, and we are intentional in setting our short-term and long-term goals.
Being purposefully ambitious allows us to celebrate our individual and collective strengths, and aspirations to grow, learn and tackle hard to drug targets for our patients.
Responsible
ACCOUNTABLE • RIGOROUS • HIGH QUALITY • RELIABLE • MOTIVATED
At OMass, we take personal and collective responsibility for delivering our shared goals.
We hold ourselves and each other accountable – to our patients, colleagues, investors, as well as our work and mission.
We apply the necessary rigor to ensure high quality.
We are self motivated and rely on each other to operate and perform at the highest levels.
Innovative
INGENIOUS • THINK OUTSIDE THE BOX • INQUISITIVE • AGILE • CONTINUOUS LEARNING • RISK TOLERANT
At OMass, we are inquisitive and resourceful
Each day we solve problems, think outside the box and push boundaries in the pursuit of delivering novel therapeutics.
When we hit a stumbling block, our ingenuity helps us remain agile and allows us to find new ways towards our goals.
In the spirit of continuous learning and improvement, we accept that not everything will work first time and we learn from any failures.
We share knowledge and ideas, and recognize innovation is a team effort.
Focused
PRIORITIZED • ALIGNED • GOAL-ORIENTED • SENSE OF URGENCY • COMMITTED • CLARITY
To ensure alignment with our mission, we take a focused approach to our delivery
We wisely utilize our resources and pay attention to our priorities.
We act with a sense of urgency to our work and commitment to colleagues and patients.
We balance pursuing our ambitious goals and innovations with our ability to ”focus and finish”.
We focus on our most important work, and we are clear on our daily priorities to deliver our collective goals and mission.
Caring
CAMARADERIE • INCLUSIVE • APPRECIATIVE • SUPPORTIVE • RESPECTFUL • INTERDEPENDENT
People at OMass care about each other as individuals, respecting and embracing our diverse experiences, backgrounds and perspectives.
Really getting to know each other helps us feel connected and included.
We are unselfish, appreciate each other and take time to help and support one another.
We value camaraderie and interdependencies between us as a team, and with the environment in which we operate.
Caring is a 360° thing, where team members care about each other, the company cares about us, and we care about the company.
Collaborative
OPEN-MINDED • CANDID • TRANSPARENT • RECEPTIVE • ASSUMING GOOD INTENT • COURAGEOUS CONVERSATIONS
People at OMass are open and enjoy a highly collaborative environment.
We expect transparency from each other and from the company, and value information-sharing to keep our collective eyes on our overall goals.
We are receptive to everyone’s diverse ideas and opinions, and assume people have good intentions when they offer viewpoints or feedback.
When we need to have challenging conversations, we face them together and with a candor that ensures productive resolution.
Building an inclusive culture
A core commitment under our ‘Caring’ value is ensuring that everyone feels welcome, and opportunity is equal here. We proactively educate ourselves and each other about how we can be more inclusive, and then work to remove bias from our processes. We’re always trying to improve, but we do celebrate the diversity we already have; no single gender dominates here, and at our last count, we scored 22 birth countries out of just over 40 people.
= Nationalities represented within our team
Working towards a more sustainable future
Our caring, ambitious, and responsible values also extend to our views on sustainability. Part of our commitment to deliver our vision of improving the lives of patients with rare diseases or immunological conditions includes a responsibility to care for our environment. We assess the impact decisions have on our environmental goals and make sustainability a top priority. We are always looking for innovative ways to become more environmentally friendly and, as a demonstration of our commitment, we have pledged to measure and offset all our scope 1 & 2 emissions moving forward.
OUR BENEFITS
The big and little things, taken care of
We’ve got the big things you need covered; a competitive remuneration package, the chance to share in the success of the company, and hybrid working arrangements. Here are just a few of the benefits we offer.
- Private health care
- Cycle to work scheme – save money on a new bike
- Life Assurance
- Income protection, currently including 24/7 access to advice on physical, mental and financial wellbeing
- Company pension, whereby OMass also contributes any NI savings
It’s often the personal touches that make the biggest difference, though. Because we’re a small, agile team, we’ll listen, move fast, and support you with personalised help when you need it.
OUR LOCATION
Where to find us
We currently have state-of-the-art laboratories and offices in our new flagship site on the Oxford Business Park. In the lab, there is plenty of space to experiment and collaborate, but we also provide social spaces in which to connect and have fun, and a well-being room (we all need a quiet moment sometimes).
OMass Therapeutics
Building 4000, Chancellor Court, John Smith Drive, ARC Oxford, OX4 2GX, UK
E: info@omass.com
JOIN US
Apply Now
Interested in joining us and transforming lives, together? Click on our open roles for more details and how to apply. If you like the sound of OMass and think you could thrive here, but there isn’t a suitable open role currently, you can also submit a speculative application by clicking on the relevant link below. Be sure to include both your CV and a covering letter explaining how you think you could make an impact at OMass, and how your skills and personal qualities align with the company we’re building.
OMass is an equal opportunity employer committed to a culturally diverse and international team.
Strictly no agencies. Please note that OMass does not accept speculative applications from recruitment agencies.
Please note: by applying for a position with OMass you agree to the terms of our Job Applicant Privacy Notice.
