C# Options Trading Developer

Gravitas Recruitment Group Hong Kong; Sydney; On-site; AUD 125,000 - 197,000; Full time

Job summary

Gravitas Recruitment Group Hong Kong is seeking a C# Options Trading Developer to join the Futures & Options team and contribute to the analysis, design, and development of core trading systems, delivering scalable back-end solutions with strong performance across regions.

You will collaborate with technologists, traders, and quantitative researchers to translate business needs into robust designs, implement features, and optimize performance through profiling and multi-threading in a fast-paced

Qualifications

• A bachelor’s degree in a technical or related discipline.
• Proven track record in C# development with design, profiling, OO, multi-threading, and performance optimisation.
• Experience in Microservices and Cloud Technologies (Azure Service Fabric, Orleans, Envoy Proxy, gRPC, Protobuf, Docker, Kubernetes, Octopus Deploy, ELK).
• Strong background in delivering business-critical systems from requirements to production.
• On-site presence in Hong Kong.

Responsibilities

• Analyse, design, and develop business-critical trading systems using C#.
• Collaborate with cross-functional teams to deliver scalable, high-performance infrastructure.
• Optimise backend systems through profiling, design improvements, and multi-threading techniques.
• Maintain and support existing systems and implement new features as required.
• Engage in code reviews, testing, and deployment processes to ensure system robustness.

Skills

C# development

Back-end performance

Multi-threading

SDLC

Cloud infrastructure

Collaboration

Education

Bachelor’s degree

Tools

Azure Service Fabric

Microsoft Orleans

Envoy Proxy

gRPC

Protobuf

Docker

Kubernetes

Octopus Deploy

ELK Stack

React JS

Job description

C# Options Trading Developer

The C# Options Trading Developer joins our client’s Futures & Options team to contribute to the analysis, design, and development of core trading systems. This role delivers scalable, high-performance solutions that support trading activities both regionally and globally. It offers the opportunity to engage with cross-functional teams and develop technologies that have a firm-wide impact.

About the Company

Our client operates within the financial services sector, specialising in trading and risk management solutions. The company values technical excellence and innovation in delivering trading platforms and services.

Role Overview

The C# Options Trading Developer will collaborate with technologists, traders, and quantitative researchers to develop and support business-critical trading systems. The role involves designing, implementing, and maintaining backend systems focusing on performance, scalability, and reliability. Success in this position will be measured by the seamless integration and robust operation of trading platforms in a fast-paced environment.

Key Skills & Experience

• Lead the development of trading systems using C# with a focus on back-end performance and multi-threading
• Manage full software development lifecycle from requirements gathering to deployment
• Build and optimise scalable, high-performance trading infrastructure in a cloud environment
• Collaborate with traders and quantitative researchers to translate business needs into technical solutions
• Document technical specifications and ensure code quality through profiling and design best practices

Nice to Have

• Experience with Microservices, Azure Service Fabric, Microsoft Orleans, Envoy Proxy, gRPC, Protobuf, React JS, Docker, Kubernetes, Octopus Deploy, and ELK Stack
• Knowledge of trading, derivatives, risk, pricing, and Greeks

Key Responsibilities

• Analyse, design, and develop business-critical trading systems using C#
• Collaborate with cross-functional teams to deliver scalable, high-performance infrastructure
• Optimise backend systems through profiling, design improvements, and multi-threading techniques
• Maintain and support existing systems and implement new features as required
• Engage in code reviews, testing, and deployment processes to ensure system robustness

Requirements

• A bachelor’s degree (or higher) in a technical or related discipline
• Proven track record in C# development with extensive knowledge of design, profiling, OO, multi-threading, and performance optimisationLI
• Experience in Microservices and Cloud Technologies (preferably Azure Service Fabric, Microsoft Orleans, Envoy Proxy, gRPC, Protobuf, Docker, Kubernetes, Octopus Deploy, ELK Stack)
• Strong background in developing business-critical systems from requirements to production
• On-site presence required in Hong Kong
• Employment type: Asia Permanent
• Duration: 2 weeks
• Start date: 16/09/2026