Old Mission Capital, LLC Jobs Hiring Now
Old Mission Capital, LLC is hiring for 10 open roles on Migrate Mate as of July 16, 2026, concentrated in software engineering and IT support & systems administration, with listed salaries up to about $300,000. Migrate Mate updates Old Mission Capital, LLC's live openings daily. Old Mission Capital, LLC is a quantitative trading and market-making firm that hires engineers, traders, and infrastructure specialists to support its investment and asset management operations.
Find Old Mission Capital, LLC JobsOverview
Old Mission Capital, LLC hiring data on Migrate Mate, as of July 16, 2026.
- Open jobs
- 10
- Top team
- Software Engineering
- Seniority
- Across all levels
- Work type
- 0% remote or hybrid
- Top location
- Chicago
- Salary range
- $80,000–$300,000
Listed salaries for Old Mission Capital, LLC roles on Migrate Mate range from about $80,000 to $300,000 per year across 10 open roles, as of July 16, 2026.
Open Roles at Old Mission Capital, LLC
Showing 10 of 10+ Old Mission Capital, LLC jobs
INTRODUCTION
Old Mission is a global proprietary trading firm that leverages state-of-the-art technology and research to identify and execute profitable trading strategies across multiple asset classes around the world. Our offices in Chicago, New York, and London are all composed of naturally-curious individuals who thrive in a team environment and constantly strive for improvement.
Old Mission does not seek capital from outside investors, allowing us the flexibility to aggressively invest in our team members and keep them engaged in the firm’s growth.
ABOUT THE POSITION
As a Junior Full-Stack Engineer at Old Mission, you will work alongside experienced engineers to help build performant and scalable frontend systems that power a best-in-class trading experience for our end users. You'll collaborate with traders, quantitative researchers, and senior developers to contribute to new systems and improve existing ones, while learning our standards for safety, reliability, and user experience. This role is for 2026 college graduates to begin in August.
Responsibilities
- Contribute to the development of intuitive trading interfaces using modern web tools like TypeScript, React, Redux, Jest and Webpack
- Write clean, well-tested code under the guidance of senior engineers
- Participate in code reviews to learn and uphold coding standards and design philosophy
- Assist in building internal tools to increase efficiency of data mining, risk management, and more
- Collaborate closely with teammates to understand user needs and translate them into effective UI solutions
REQUIRED SKILLS
- An undergraduate or an advanced degree in a quantitative field such as Computer Science, Engineering, or one of the hard sciences
- Passion for UX and front-end development
- Internship experience in a front-end focused role coding in TypeScript, JavaScript, or React
- Minimum 3.0 GPA
- Understanding of systems programming, data structures, and algorithms
- Familiarity working in a Linux environment
- Strong analytical and problem solving skills
- Great communication skills, both written and verbal
- A strong work ethic and ability to adapt quickly in a fast-paced environment
BENEFITS AND PERKS
- Competitive salary with discretionary annual bonus
- Fully paid Medical, Dental, Vision, Disability, and Life Insurance
- Fully stocked kitchen; free breakfast and lunch every day on-site
- Tuition Reimbursement Program
- 401(k) with employer match
- Flexible Spending Plan
- Commuter Benefit Program
Old Mission is not accepting unsolicited resumes from any staffing/search firms. All resumes submitted by staffing/search firms to any employee at Old Mission via email, the Internet or directly without a valid signed search agreement will be deemed the sole property of Old Mission, and no fee will be paid in the event the candidate is hired by Old Mission.
INTRODUCTION
Old Mission is a global proprietary trading firm that leverages state-of-the-art technology and research to identify and execute profitable trading strategies across multiple asset classes around the world. Our offices in Chicago, New York, and London are all composed of naturally-curious individuals who thrive in a team environment and constantly strive for improvement.
Old Mission does not seek capital from outside investors, allowing us the flexibility to aggressively invest in our team members and keep them engaged in the firm’s growth.
ABOUT THE POSITION
As a Junior Full-Stack Engineer at Old Mission, you will work alongside experienced engineers to help build performant and scalable frontend systems that power a best-in-class trading experience for our end users. You'll collaborate with traders, quantitative researchers, and senior developers to contribute to new systems and improve existing ones, while learning our standards for safety, reliability, and user experience. This role is for 2026 college graduates to begin in August.
Responsibilities
- Contribute to the development of intuitive trading interfaces using modern web tools like TypeScript, React, Redux, Jest and Webpack
- Write clean, well-tested code under the guidance of senior engineers
- Participate in code reviews to learn and uphold coding standards and design philosophy
- Assist in building internal tools to increase efficiency of data mining, risk management, and more
- Collaborate closely with teammates to understand user needs and translate them into effective UI solutions
REQUIRED SKILLS
- An undergraduate or an advanced degree in a quantitative field such as Computer Science, Engineering, or one of the hard sciences
- Passion for UX and front-end development
- Internship experience in a front-end focused role coding in TypeScript, JavaScript, or React
- Minimum 3.0 GPA
- Understanding of systems programming, data structures, and algorithms
- Familiarity working in a Linux environment
- Strong analytical and problem solving skills
- Great communication skills, both written and verbal
- A strong work ethic and ability to adapt quickly in a fast-paced environment
BENEFITS AND PERKS
- Competitive salary with discretionary annual bonus
- Fully paid Medical, Dental, Vision, Disability, and Life Insurance
- Fully stocked kitchen; free breakfast and lunch every day on-site
- Tuition Reimbursement Program
- 401(k) with employer match
- Flexible Spending Plan
- Commuter Benefit Program
Old Mission is not accepting unsolicited resumes from any staffing/search firms. All resumes submitted by staffing/search firms to any employee at Old Mission via email, the Internet or directly without a valid signed search agreement will be deemed the sole property of Old Mission, and no fee will be paid in the event the candidate is hired by Old Mission.
Job Roles at Old Mission Capital, LLC
Working at Old Mission Capital, LLC
Old Mission Capital, LLC's 10 open roles are across all levels, and about 0% are remote or hybrid. The most active teams are software engineering, IT support & systems administration, and business operations. Old Mission Capital, LLC is a quantitative trading and market-making firm operating in investment and asset management. Its open roles span software engineering, systems infrastructure, and trading, with positions ranging from systems-level C++ and Python development to market connectivity, site reliability, and systematic trading roles. Most Old Mission Capital, LLC roles are based in Chicago and New York.
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Browse jobs by roleOld Mission Capital, LLC Jobs: Frequently Asked Questions
How many jobs is Old Mission Capital, LLC hiring for right now?
Old Mission Capital, LLC is hiring for 10 open roles on Migrate Mate as of July 16, 2026, updated daily, concentrated in software engineering and IT support & systems administration. Roles span software engineering, trading, and infrastructure disciplines. Migrate Mate pulls Old Mission Capital, LLC's live postings each day, so the count reflects current openings.
What kinds of roles does Old Mission Capital, LLC hire for?
The most active teams are software engineering, IT support & systems administration, and business operations. Old Mission Capital, LLC regularly hires for software engineering positions in C++, Python, and full-stack development, as well as systems and infrastructure roles such as site reliability, desktop support, and data center technicians. Trading-side roles including systematic equity options traders and market connectivity analysts also appear. Most postings are across all levels.
Are Old Mission Capital, LLC jobs remote or in-person?
Mostly on-site. About 0% of Old Mission Capital, LLC's open roles on Migrate Mate are remote or hybrid as of July 16, 2026, with the rest based in Chicago. Each Old Mission Capital, LLC listing shows its work location so you can filter before applying.
How do I apply to a job at Old Mission Capital, LLC?
Find a role that fits your background in Old Mission Capital, LLC's listings on Migrate Mate, then follow the listing through to Old Mission Capital, LLC's own careers page to submit your application. Old Mission Capital, LLC manages its own hiring process, so all applications, interviews, and decisions are handled directly by Old Mission Capital, LLC's recruiting team.
What do Old Mission Capital, LLC jobs pay?
Listed salaries for Old Mission Capital, LLC roles on Migrate Mate range from about $80,000 to $300,000 per year as of July 16, 2026, with most postings at across all levels. Exact pay is set by Old Mission Capital, LLC and shown on each listing.
Does Old Mission Capital, LLC hire entry-level?
Most of Old Mission Capital, LLC's open roles on Migrate Mate are across all levels as of July 16, 2026. Check individual Old Mission Capital, LLC listings for stated experience requirements.
Where is Old Mission Capital, LLC hiring?
Most Old Mission Capital, LLC roles are based in Chicago and New York, and about 0% offer remote or hybrid work as of July 16, 2026. Migrate Mate shows the location on each listing.