Quant jobs / Citadel Securities

Quantitative Developer/Research Engineer

Citadel Securities developers turn quantitative research into automated trading software. They work with researchers to choose priorities and build implementations of statistical trading methods.

What you’d work on

Our reading of the posting: what a new hire in this role would most likely spend their first months on.

Implement models in trading applications.
Test and deploy software with researchers.
Develop tools matched to research requirements.

What they ask for

Required

Quantitative reasoning
Software-development interest
Mathematical aptitude
Communication

Preferred

C++, Python or R
Distributed systems or ML
Relevant degree or equivalent experience

Education: Relevant bachelor’s, master’s or doctoral study, or equivalent experience, is preferred.
Experience: No minimum years specified.
Languages and tools: C++
Python
R

How to prepare

Implement a model with numerical tests.
Profile a trading simulation.
Practise explaining software trade-offs to researchers.

What to study

The HFT Quant Developer roadmap sets out the stages for this kind of role, with free resources for each.

Open the roadmap

Apply

Read the full posting on Citadel Securities’s site before applying: requirements, location and pay can change after we check them.

View the posting on Citadel Securities’s site ↗

SelfMadeQuant wrote this summary from the employer’s public posting, last checked 6 November 2026. SelfMadeQuant isn’t affiliated with Citadel Securities and doesn’t handle applications.