Citadel Source Jobs

Senior Python Developer (Networking) | Tech-Led Systematic Hedge Fund📍 London | Market-Leading Compensation & BenefitsA leading, technology-driven systematic hedge fund is seeking a Senior Python or Go Developer to work within their Networking division. This is a highly technical role focused on building the automation, tooling, and guardrails tha...

Senior Python Developer (Networking) | Tech-Led Systematic Hedge Fund📍 London | Market-Leading Compensation & BenefitsA leading, technology-driven systematic hedge fund is seeking a Senior Python or Go Developer to work within their Networking division. This is a highly technical role focused on building the automation, tooling, and guardrails tha...

Do you want to join a global high frequency trading firm and have real ownership?We’re looking for a sharp, product-minded engineer to help scale a fast-growing platform used across the company. You’ll work across frontend and backend systems, solve performance challenges, and play a key role in shaping the architecture of a complex, high-impact pr...

Do you want to join a global high frequency trading firm and have real ownership?We’re looking for a sharp, product-minded engineer to help scale a fast-growing platform used across the company. You’ll work across frontend and backend systems, solve performance challenges, and play a key role in shaping the architecture of a complex, high-impact pr...

Hybrid – London | Global FinTech InnovatorOur client is an established yet fast-growing FinTech specialising in high-performance market data analytics. Their platform ingests and processes terabytes of global trading data daily, powering decision-making for leading investment firms, exchanges, and research institutions.They’re now seeking a Market ...

Hybrid – London | Global FinTech InnovatorOur client is an established yet fast-growing FinTech specialising in high-performance market data analytics. Their platform ingests and processes terabytes of global trading data daily, powering decision-making for leading investment firms, exchanges, and research institutions.They’re now seeking a Market ...

Lead & Senior Software Engineer | Fintech Accelerator | London | Scale-up ImpactThe OpportunityBorn from the successful launch of a major digital bank, we are hiring a high-growth venture team with a fresh mission. Building products that solve real-world financial problems by putting the customer at the center of every decision.As a Lead & Senior S...

Lead & Senior Software Engineer | Fintech Accelerator | London | Scale-up ImpactThe OpportunityBorn from the successful launch of a major digital bank, we are hiring a high-growth venture team with a fresh mission. Building products that solve real-world financial problems by putting the customer at the center of every decision.As a Lead & Senior S...

Description At System C, we create technology that connects care and improves outcomes across the NHS. Our CIS Oncology (ChemoCare) product plays a critical role in supporting chemotherapy treatment management nationwide, and we are continuing to invest in its safety, quality, and long-term evolution. We are looking for a Senior Full Stack Softwar...

Senior TypeScript Engineer Belfast | 3 Days Onsite At a Glance Senior-level full stack, frontend, or backend TypeScript engineer (5+ years) React, Node.js, AWS serverless stack 3 days onsite in Belfast Building the unified platform that powers a major global financial institution's core broker revenue Who You'll Work For One of the world's larg...