Quant jobs / Susquehanna International Group (SIG)

Trading Systems Developer – C#

A back-end C# role in the Options Technology team, a newly created post as Susquehanna builds up in Asia-Pacific. You design and ship trading systems alongside technologists, traders and quants.

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.

Build and maintain back-end services behind options trading
Take features from requirements through to production release
Profile and tune multi-threaded code for speed
Connect pricing and risk components to trader tools

What they ask for

Required

Strong C#
Object-oriented design
Multi-threading and performance profiling
Back-end development
Technical bachelor's degree or higher
Interest in options, risk or trading systems

Preferred

Options, pricing and Greeks knowledge
Microservices and cloud tooling
gRPC and Protobuf
Docker and Kubernetes

Education: Bachelor's degree or higher in a technical or related discipline
Experience: Experienced developer; the JD does not give a year count
Languages and tools: C#
gRPC
Protobuf
Docker
Kubernetes
Markets: options

How to prepare

Build a multi-threaded order-book or pricing service in C# and profile it
Learn options basics: payoffs, Greeks and risk
Practise concurrency patterns and lock-free queues
Containerise a small service with Docker and expose it over gRPC

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 Susquehanna International Group (SIG)’s site before applying: requirements, location and pay can change after we check them.

View the posting on Susquehanna International Group (SIG)’s site ↗

SelfMadeQuant wrote this summary from the employer’s public posting, last checked 6 November 2026. SelfMadeQuant isn’t affiliated with Susquehanna International Group (SIG) and doesn’t handle applications.