Lead C# Developer - Core Trading Technology

Susquehanna | Financial markets / trading technology

1h 11m ago

On-site

Full Time

Lead

Sydney

As a C# Lead Developer in the Core Trading Technology team, you will lead the analysis, design and development of applications in a Front Office trading environment. The software spans server-side systems and user interfaces. You will manage and mentor a team of developers while remaining hands-on in the technical direction of the platform. You will work closely with traders, quantitative researchers and technology teams to turn requirements into reliable, high-performing software covering almost all aspects of the trading environment.

The Sydney Core Trading Technology team owns a rich mix of proprietary software focused on highly available applications, including trading analysis tools, market and static data feeds, trade monitoring and real-time messaging, all used to support trading decisions.

Responsibilities

Leadership and people

Lead and manage a team of developers, setting priorities, allocating work and removing blockers.
Mentor and coach junior and mid-level developers through code reviews, pairing, and career development.
Contribute to hiring, onboarding, performance feedback and succession planning.
Foster a high-performing, collaborative and accountable engineering culture.

Technical delivery

Own the analysis, design and development of business-critical applications, from requirements gathering through to production release and support.
Set technical direction and architecture standards, and make sound design trade-offs across performance, resilience and maintainability.
Establish and uphold engineering best practice, including code quality, testing, profiling, CI/CD and operational readiness.
Remain hands-on where it matters: prototyping, tackling complex multi-threading and performance problems, and reviewing critical code.

Stakeholders and improvement

Partner with traders, quants and senior technology stakeholders to understand needs, set expectations and communicate delivery status and risks.
Drive continuous improvement of the team’s capability and applications through technology, automation and process.
Stay curious about new technologies and assess where they can add value to the trading platform.

Essential qualifications and experience

Bachelor’s degree (or higher) in a technical or related discipline.
10+ years of C# experience across server-side systems (with strong multi-threading) and client-side development.
Proven experience leading or managing a development team, including mentoring junior engineers and developing talent.
Deep knowledge of software design, object-oriented principles, profiling and performance tuning, multi-threading, and UI development on both client and server sides.
Track record of delivering complex, business-critical systems through the full software development life cycle, ideally in an Agile environment.
Strong interpersonal and communication skills, with the ability to engage traders, quantitative analysts, developers and senior management.
Ability to meet deadlines and make sound decisions under pressure in a fast-paced environment.
Excellent attention to detail and accuracy.

Advantageous

WPF experience.
Experience running and deploying .NET Core applications on Linux.
Experience with real-time applications, especially Tibco RV.
Experience in a front-office trading or financial markets environment.

What You’ll Bring to the Team

A balance of hands-on technical credibility and people leadership.
The ability to build trust with both engineers and business stakeholders.
A commitment to raising the bar for the team’s skills, tooling and delivery practices.

#LI-CC3

Required Skills

csharpdotnetwpf

Required Languages

🇬🇧 English