Real-Time Options Trading: Full-Stack Engineer

Citadel Securities; Sydney; On-site; AUD 120,000 - 170,000; Full time

Job summary

Citadel Securities in Sydney and New York is seeking a software engineer to build the next generation of high-touch pricing and trading workflow tools for Options traders. You will partner with traders, researchers, sales, and business leaders to design workflows that improve pricing, execution, and risk management, while delivering scalable, real-time systems.

This role offers exposure to global markets, a greenfield OTC Options initiative, and backend services spanning APIs and distributed

Qualifications

• 3+ years of professional software engineering experience building complex applications.
• Experience building full stack applications using modern frontend and backend technologies.
• Bachelor’s or Master’s degree in Computer Science or equivalent practical experience.

Responsibilities

• Define and build the next generation of high-touch pricing and trading workflow tools for Options traders.
• Partner directly with traders, quantitative researchers, sales teams, and business leaders to design workflows that improve pricing, execution, and risk management.
• Build full stack applications spanning modern web frontends, backend services, APIs, and distributed systems.
• Develop intuitive, high-performance user interfaces that enable traders to research, monitor, price, and execute trades in real time.
• Design scalable backend services that support pricing, workflow orchestration, market data, and trading operations.
• Build systems to support markets and option instruments Citadel Securities has never traded before.
• Gain exposure to multiple global markets while helping expand Citadel Securities’ Options platform internationally.
• Prototype new ideas quickly while evolving them into robust production systems.
• Analyze complex business and technical problems and deliver elegant software solutions across the firm.
• Continuously improve performance, scalability, stability, and usability of mission-critical trading applications.
• Collaborate across engineering, quantitative research, and trading teams to translate complex financial concepts into intuitive software.

Skills

TypeScript

React

Full stack development

Distributed systems

API design

C++

Python

Asynchronous/event-driven

Communication

Problem solving

Education

Bachelor’s or Master’s degree in Computer Science or equivalent practical experience

Job description

Citadel Securities in Sydney and New York is seeking a software engineer to build the next generation of high-touch pricing and trading workflow tools for Options traders. You will partner with traders, researchers, sales, and business leaders to design workflows that improve pricing, execution, and risk management, while delivering scalable, real-time systems.

This role offers exposure to global markets, a greenfield OTC Options initiative, and backend services spanning APIs and distributed