Susquehanna International Group Tech Stack

Quantitative trading and market research platform with proprietary algorithms

Financial Services Bala Cynwyd, Pennsylvania 1,001–5,000 employees Privately Held

Susquehanna International Group operates a quantitative trading and research operation built on a polyglot tech stack spanning C#, Java, C++, and Python, with heavy investment in ML frameworks (PyTorch, TensorFlow) and real-time data infrastructure (Elasticsearch, Logstash, Kibana). The active project list—low-latency trading systems, alpha generation, market behavior modeling, deep learning enhancements—reveals an organization focused on systematic trading execution and research velocity. Hiring velocity is decelerating (72 roles in last 30 days across 277 open), with engineering and research dominating the headcount mix, pointing to a mature, capability-driven organization scaling research output rather than raw headcount.

Tech Stack 196 technologies

Core StackC# Java C++ Python Tableau Linux PyTorch TensorFlow Oracle Pandas NumPy gRPC React Docker Kubernetes Ansible OpenAI Boost Excel VBA Azure Service Fabric Orleans Envoy Protocol Buffers Octopus Deploy Elasticsearch, Logstash, Kibana Git Azure Gemini Claude+165 more

What Susquehanna International Group Is Building

◆Challenges

Performance optimization and latency reduction
Compliance with federal regulations
Reliability
High frequency low latency trading
Building and maintaining trading systems
Compliance with employment laws
Exchange compliance
Process automation
Enhancing systems, processes and internal controls
Scaling across apac

▲Active Projects

New strategy development
Low-latency trading systems
Next gen sports trading platform
Develop automation tools for research and system development
Building alphas on actual trading strategy
High-performance market data processing
Backtest strategies using historical market data
Alpha generation on trading strategy
Market behavior modeling
Enhance trading strategies with deep learning

Hiring Activity

Decelerating280 roles · 70 in 30d

Department

Engineering

Research

Finance

Ops

Data

Legal

Support

Seniority

Senior

Mid

Intern

Junior

Manager

Lead

Principal

Staff

Notable leadership hires: Technology Team Lead, Team Lead

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About Susquehanna International Group

Susquehanna International Group is a proprietary trading and quantitative research firm based in Bala Cynwyd, Pennsylvania, with over 3,500 employees across 17+ global locations. The firm operates in proprietary trading, institutional sales and research, and venture/private equity, with a stated focus on applying machine learning and statistical rigor to market opportunities. The organization's pain points reflect execution complexity: low-latency trading system reliability, regulatory compliance (federal and exchange-specific), high-performance market data processing, and operational scaling across Asia-Pacific. Engineering and research departments anchor the hiring mix, supported by finance, data, and operations functions.

HeadquartersBala Cynwyd, Pennsylvania

Company Size1,001–5,000 employees

Hiring MarketsUnited States, Australia, Japan, China, Ireland, United Kingdom, Italy, India

Frequently Asked Questions

What tech stack does Susquehanna International Group use?

Core languages: C#, Java, C++, Python. ML/analytics: PyTorch, TensorFlow, Pandas, NumPy. Infrastructure: Docker, Kubernetes, Azure Service Fabric, Envoy, gRPC. Data: Oracle, Elasticsearch, Logstash, Kibana. Monitoring/deployment: Ansible, Octopus Deploy, Git.