Jack & Jill
Senior Scientist (£55k–£65k + Equity) at well-funded sustainable materials startup

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Job Title
Senior Scientist
Salary
£55k–£65k + Equity
Company Description
Well-funded sustainable materials startup
Job Description
Lead the formulation of manufacture-ready polymer materials for a startup tackling the plastic crisis. You will serve as the technical bridge between design and manufacturing, translating customer requirements into chemical specifications for industrial-scale production. This high-impact role involves designing stable, repeatable formulations optimized for extrusion and molding to replace traditional plastics.
Location
London, UK
Why this role is remarkable
- Join a mission-driven team creating bio-based, compostable alternatives to traditional plastic packaging.
- Play a pivotal role in a well-funded startup scaling fast with significant Series A backing.
- Directly shape the company's trajectory by moving deep science from the lab to the production floor.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
What You Will Do
- Design and optimize polymer formulations for industrial-scale extrusion and molding.
- Act as the primary technical interface between commercial design teams and manufacturing partners.
- Own formulation development from initial bench-scale testing through to stable, repeatable mass production.
The ideal candidate
- Holds a Masters or PhD in Chemistry, Polymer Science, or Materials Science.
- Possesses at least two years of hands-on R&D experience within an industrial setting.
- Exhibits deep knowledge of polymer chemistry and a first-principles approach to material properties.
Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.


Get help with your application
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How does this work?
- Jack's an AI agent for job searching and career coaching. He works for you.
- Jill is the AI recruiter working for the company. She recruits from Jack's network.
- If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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