Haystack
Junior Data Scientist

How your CV stacks up
Upload your CV to see how well it fits this job role
?%
We're hiring for a leading provider of measurement solutions for online retail, empowering teams with full-funnel marketing insights, forecasting, and optimization. This company is dedicated to helping businesses move faster and grow smarter through advanced data analytics.
The Role
- Own moderately difficult data science tasks end-to-end, including analytical investigations, model backtesting, and production bug fixes.
- Systematically debug code across various repositories, leveraging AI tooling for efficiency.
- Write and review production-level Python and SQL code, focusing on quality and minimizing technical debt.
- Effectively utilize cloud tooling and QA automation for data validation and pipeline understanding.
- Communicate methodologies and findings directly to clients and colleagues.
- Proactively collaborate with other teams to define requirements and acceptance criteria.
- Develop into an internal data science champion for owned areas.
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'll Need
- 1-2 years of commercial data science experience or a strong academic record with a quantitative degree.
- Strong proficiency in Python and SQL, with experience in collaborative coding environments.
- Deep understanding of a select few machine learning algorithms and their appropriate applications.
- Demonstrated ability to systematically debug unfamiliar codebases, with effective use of AI assistance.
- Strong AI fluency, understanding how to optimally leverage AI tools for task initiation and dependency resolution.
- Confidence in completing work independently once scope is agreed upon.
- Ability to communicate effectively with stakeholders with minimal supervision.
- Genuine attention to detail, with a keen eye for identifying inaccuracies.


Get help with your application
Your very own career expert that helps elevate your application to the next level.
What's On Offer
- Competitive salary
- A published Data Science Career Development Framework with clear progression criteria.
- Opportunities to work on advanced methodologies like Bayesian attribution, MMM, and causal inference.
- A collaborative team environment with rigorous code and methodology reviews.
“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
Location