Evolve and grow with a RSSL career


We’re a leading UK Contract Research Organisation, trusted by the world’s most innovative Life Sciences and Food companies to deliver innovative solutions to real world problems. Our fast-growing, diverse team of more than 300 scientists, consultants and technical experts work on cutting-edge drug development and food formulation projects to ensure the foods we love, and the medicines we trust, are safe, effective and of the highest quality. We are proud of who we are, the work we do and the impact we make.


We’re excited about the future. We see opportunity in change, possibility in science and the potential to transform lives for the better. If you feel the same way, take your next step with a job at RSSL and let’s make a positive impact together.


We are always on the lookout for new talent to help us push the limits of what is possible.


Explore our current opportunities



The power to take you places


We’re part of Mondelēz International, the US food company that owns some of the world’s best loved snack brands. This structure means we have the financial and organisational strength to punch above our weight on the global stage while still benefiting from the agility and entrepreneurial mindset of a tech start-up.


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Discover your next role
Invest RD 4960 HR

Facilities engineer


Senior scientist - Biopharmaceutical chromatography


Chemistry graduate


Scientist II - Functional ingredients


Why choose an RSSL career?


Our world is changing, fast. Science is finding answers to some of the biggest challenges humanity faces. Whether it’s exciting cell and gene therapies or developing sustainable protein solutions to feed a growing population, we’re proud to be at the forefront of cutting-edge science with the potential to transform lives.


We’re growing fast and are looking for people who share our passion for science and want to use their talents to make a positive difference in the world. In return, we’ll help you fulfil your potential and build a career that’s truly rewarding. Because a job at RSSL doesn't just offer competitive pay, a comprehensive package, extensive training and a leading industry reputation.  When you join us, you’ll be part of something bigger.

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    Our culture

    We’re passionate about science and innovation. We reward intelligence, agility and problem-solving and empower our people to find creative solutions for our clients and make a positive difference in the world. As an employer, we’re committed to nurturing an environment where people can flourish and be their true selves. Our outlook is open, diverse and collaborative because we understand that the best science happens when we pull together as a team, pooling our knowhow and sharing our expertise.

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    Rewarding our people and helping them thrive
    We care about doing the right thing – and that starts with our people. We want you to perform at your best and fulfil your potential and believe that means ongoing support not just for your professional progression but also your personal development. We offer competitive salaries, a pension scheme and a wide range of flexible benefits. We understand the importance of a health home-work balance and are here to support you and your family. Your health and safety at work is important to us so we have rigorous onsite H&S rules and training, which is constantly reviewed and updated.

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    Learning & development

    Life-long learning

    We are constantly evolving and adapting in response to a fast-changing world, where scientific breakthroughs are re-imagining the art of the possible and transforming lives. We want our people to make the most of these exciting RSSL career opportunities so we’re nurturing a culture of curiosity and life-long learning. Whether it’s upskilling to take on a new role or a deep dive into a specialist area, our people have the opportunities to accelerate their career progression, keep pace with new developments and fulfil their potential. Whatever your level or role, we’ll provide regular reviews and training opportunities to help you reach your professional goals and personal aspirations.

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    Diversity & inclusion

    We embrace the power of difference.

    We understand that the best science happens when we collaborate, sharing our unique knowledge, insights, and experiences, to create solutions with real-world impact. That’s why we’re passionate about nurturing a work environment that’s open, inclusive, and welcoming, where people can be themselves and focus on realising their potential with a job at RSSL. When it comes to our clients, we know that one size doesn’t fit all. That’s why we welcome open-minded people of all gender identities, sexual orientations, ethnicities, abilities and experiences and value diverse talent from a range of backgrounds and different educational pathways. Because when it comes to science, fresh perspectives and innovative thinking have the power to reshape our world.

Early RSSL careers

There has never been a more exciting time to work in science. Enormous strides are being made across multiple fields, generating life-changing breakthroughs and transformative solutions to real-world problems.

A job at RSSL is a great place to start your working life because we know what it takes to kickstart a career in science. With a proven training and support programme, we’re ready to guide you through this exciting time and give you the skills, experiences, and opportunities to get a head start and fulfil your potential.

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Explore our employee stories

We’re proud of what we’ve achieved as an employer but don’t just take our word for it. Hear what our past and current employees have to say about their career journeys and how their work is helping make our world safer, healthier and more sustainable.

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"No two days are the same!"

Lisa Halward 3

"I've explored different career paths at RSSL"

Mark Auty RD 4193 Hrsmallr

"I'm still being challenged, learning and making a difference"

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“I created a platform that celebrates RSSL’s diversity.”

Kate Goodfellow 1

"Science outreach means I can giveback"

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"I’ve learned so much on the graduate placement scheme."

Join our talent community

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“"A great place to thrive, with flexible working and ongoing support."”

“"A place where you can real make a positive difference and your opinions are listened to."”

Our awards

Join our trusted, collaborative team and make an impact

Contact us

Need to get in touch? Either complete the enquiry form or call us:

Switchboard: +44 (0)118 918 4000

Customer Services: +44 (0)118 918 4076

We value your trust when sharing your personal data with us. We always treat your data in a fair and respectful manner limited to the purpose above mentioned. If you would like to know more about how we handle your data, please read our privacy notice.