Old Mission Tech Stack

Global multi-asset market maker for exchanges, brokers, and institutional investors

Financial Services Chicago, Illinois 201–500 employees Founded 2008 Privately Held

Old Mission runs a multi-asset market-making platform built on Python, C++, PostgreSQL, and Bloomberg connectivity. The company is actively scaling quantitative infrastructure—derivative pricing models, FX trading expansion, bond pricing algorithms, and options research tooling are concurrent initiatives. Finance and research dominate hiring (20 of 31 roles), with engineering focused on supporting trading infrastructure rather than consumer-facing product, reflecting a capital-markets operations model.

Tech Stack 27 technologies

Core StackPython Linux PostgreSQL MySQL C++ MATLAB Java Ruby JavaScript React Intune Active Directory Bash Git Subversion Mercurial VBA R Bloomberg Excel SQL Windows Azure Entra ID Microsoft 365 Exchange Online Teams SharePoint

What Old Mission Is Building

◆Challenges

Calibration accuracy issues
Optimizing fixed income trading strategies
Optimizing automated trading infrastructure
High availability low latency systems
Improving risk and pricing models
Enhancing trade execution quality
Identifying new investment opportunities
Monitoring global macro events
Minimizing market impact
Ensuring liquidity

▲Active Projects

Automated trading infrastructure optimization
Next generation trading algorithms
Derivative pricing model development
Options research infrastructure development
Expansion of fx trading efforts
Trade analysis
Equity volatility product modeling
Critical clearing and vendor relationship management
Trading strategy design and monitoring
Develop quantitative models for bond pricing and liquidity

Hiring Activity

Decelerating30 roles · 7 in 30d

Department

Finance

Research

Engineering

Ops

Sales

Support

Trading

Seniority

Mid

Senior

Junior

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About Old Mission

Old Mission is a global market maker founded in 2008, headquartered in Chicago. The firm specializes in pricing and hedging across equities, derivatives, fixed income, and FX, serving exchanges, brokers, and large institutional investors. Operations span the United States and United Kingdom. The platform automates valuation and risk transfer across asset classes, competing on speed and pricing accuracy in institutional flow trading. Active work spans trading algorithm design, derivative pricing models, volatility and bond products, trade execution quality, and critical vendor relationships.

HeadquartersChicago, Illinois

Company Size201–500 employees

Founded2008

Hiring MarketsUnited States, United Kingdom

Frequently Asked Questions

What technology does Old Mission use for trading?

Python, C++, PostgreSQL, MySQL, and Bloomberg terminal integration form the core. Also uses R, MATLAB, and VBA for quantitative model development and analysis.