Reasoning Dynamics in Large Language Models – Internship
Reasoning Dynamics in Large Language Models – Internship
Cambridge
AstraZeneca is a global,science-ledbiopharmaceutical business and its innovative medicines are used by millions of patients worldwide. AstraZeneca Summer Internships introduce you to the world of ground-breaking drug development, embedding you in highly dedicatedteams,committed to delivering life-changing medicines to patients. Our 10–12-week program is designed for undergraduate, master's, and doctoral students. We offer exciting opportunities across Research & Development, Operations, and Enabling Units (Corporate functions).
Our internships immerse students in the pharmaceutical industry, allowing the opportunitytocontributeto our diverse pipeline of medicines whether in the lab or outside of it. You will feel trusted and empoweredtotakeonnewchallenges, but with all the help and guidanceyouneedtosucceed. This internship will help you developessential skills, expand your knowledge, and build a network that will set you up for future success. You will be surrounded by curious,passionate, and open-minded professionals eager to learn and follow the science, fostering your growth in a truly collaborative and globalteam.
You will work on acutting-edge research project investigating how reasoning is represented, structured, and sustained inlargelanguagemodels, a critical capability for long-runningscientific analyses, clinical workflows, and multi-step drug discovery tasks. This work directly supports our agentic AI initiatives, where models must perform coherentmulti-step reasoning across tools, sessions, and evolving contexts.
The project explores novel approaches to modelling and managinginternal reasoning representations inlargelanguagemodels, including how intermediate reasoning can be compactly represented without degradingdownstreamanalytical performance. Your work will help determinehowdifferentreasoning structures affect reliability, efficiency, and generalisation across tasks and model architectures.
This is an opportunitytocontributetofoundational AI research with immediatepractical impact on how we design and deploy reasoning-capable AI systems in healthcare and life sciences.
As part of this internship, you will:
Design and implement architectures that operate on internal representations from largelanguagemodels to analyse and structure multi-step reasoning behaviour
Conduct experiments to characterise trade-offs between reasoning fidelity, efficiency, and robustness across different task settings
Evaluate reasoning approaches on benchmarks with verifiable outputs (e.g. mathematical,logical, or scientific reasoning tasks), focusing on preservation of functional reasoning capability
Analyse howdifferentreasoning representations influence error propagation and task consistency
AstraZeneca is where you can immerse yourself in groundbreaking work with realpatient impact.
Trusted to work on important projects, you’ll have the independence totakeonnewchallenges while receiving all the guidanceyouneedtosucceed. Our collaborativeenvironment is designed to help you growprofessionally and personally, surrounded by passionate individuals eager to makeadifference.
Our mission is to build an inclusive and equitable environment. We want people to feel they belong at AstraZeneca, starting with the recruitment process. Wewelcome and consider applications from all qualified candidates, regardless of characteristics.
We offer reasonableadjustments/accommodations to help all candidates to perform at their best. If you have a need for any reasonableadjustments/accommodations, please complete the section in the application form.
Ready to make an impact? Apply now and join us on this excitingjourney!
#Earlytalent
Date Posted
30-Jan-2026Closing Date
13-Feb-2026Our mission is to build an inclusive and equitable environment. We want people to feel they belong at AstraZeneca and Alexion, starting with our recruitment process. We welcome and consider applications from all qualified candidates, regardless of characteristics. We offer reasonable adjustments/accommodations to help all candidates to perform at their best. If you have a need for any adjustments/accommodations, please complete the section in the application form.AstraZeneca embraces diversity and equality of opportunity. We are committed to building an inclusive and diverse team representing all backgrounds, with as wide a range of perspectives as possible, and harnessing industry-leading skills. We believe that the more inclusive we are, the better our work will be. We welcome and consider applications to join our team from all qualified candidates, regardless of their characteristics. We comply with all applicable laws and regulations on non-discrimination in employment (and recruitment), as well as work authorisation and employment eligibility verification requirements.
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