Braintrust
Senior Application Security Engineer - AI Code Evaluation

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Help a top AI lab evaluate and improve large language models through security-focused coding tasks
Bring your software-engineering judgment and hands-on security experience to work involving vulnerabilities, exploit verification and security patches.
This is a contracting engagement, with potential for a longer-term engagement. Remote candidates in the selected countries are eligible.
What you will do
- Evaluate coding tasks involving software vulnerabilities, exploit verification and security patches.
- Create high-quality coding prompts and reference answers for benchmark-style problems.
- Evaluate model outputs for code generation, refactoring, debugging and implementation.
- Identify and document model failures, edge cases and reasoning gaps.
- Compare private language models with leading external models.
- Build or configure coding environments for evaluation and reinforcement learning.
- Follow detailed annotation and evaluation guidelines consistently.
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 bring
- At least five years of professional software-development experience and strong Python skills.
- Hands-on experience with vulnerability research, exploit reproduction or verification, or implementing, backporting or validating security patches.
- The ability to apply structured evaluation criteria and write clear technical feedback.
- Fluency in written and spoken English.


Get help with your application
Your very own career expert that helps elevate your application to the next level.
Helpful, not required
- Professional code review, coding annotation, LLM/code evaluation or benchmark design.
- Knowledge of another programming language.
- Team leadership or mentoring experience.
“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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