Full-Time

Trading Support Engineer

Posted on 10/31/2025

Old Mission

Old Mission

51-200 employees

Global market maker for illiquid ETFs

No salary listed

London, UK

In Person

Category
Quantitative Finance (1)
Required Skills
Bash
Python
SQL
Postgres
Pandas
DevOps
Linux/Unix
Requirements
  • An undergraduate or an advanced degree in a quantitative field such as Computer Science, Engineering or one of the hard sciences.
  • Fluent in Bash and experience working in a Linux environment.
  • 2+ years of Python experience, including Pandas and familiarity with object-oriented design.
  • 2+ years SQL experience. Ideally PostgreSQL, but any variant of the standard SQL query language will suffice.
  • Punctuality and attention to detail.
  • Strong analytical and problem-solving skills.
  • Excellent communication skills, both written and verbal.
  • Ability to prioritize and multi-task in a fast-paced environment.
Responsibilities
  • Deploy, run, and monitor all applications
  • Daily operational tasks supporting the production trading systems, user issues, and requests
  • Effectively collaborating with our traders, developers, and other teams to meet Old Mission's technology needs
  • Coordinate, prioritize, and plan the necessary changes
  • Automate processes using Python and bash scripting
  • Develop automation for system configuration and deployment

Generating company summary.

Company Size

51-200

Company Stage

Private

Total Funding

N/A

Headquarters

Chicago, Illinois

Founded

2008

Simplify Jobs

Simplify's Take

What believers are saying

  • Single-dealer platform captures institutional volume from clients seeking direct liquidity.
  • Illiquid ETF focus provides defensible market position with limited competition.
  • Trillions in historical liquidity provision demonstrates deep client relationships and trust.

What critics are saying

  • Platform launch delays erode competitive advantage against Jane Street and Citadel.
  • FINRA regulatory scrutiny over illiquid ETF positions risks trading restrictions.
  • Talent poaching by Jump Trading and larger firms threatens core pricing capabilities.

What makes Old Mission unique

  • Specializes in hardest-to-price, most illiquid ETFs where competitors avoid.
  • Launched single-dealer platform in late 2025 under Eugene Davidovich's leadership.
  • Global presence across Chicago, New York, and London offices enables multi-asset operations.

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Benefits

Competitive Salary

Discretionary bonus

Top tier Medical, Dental, Vision, Disability and Life Insurance paid for by the firm

401(k) with employer match

Full stocked kitchen, free breakfast and lunch everyday on-site

Tuition reimbursement

Flexible Spending Plan

Commuter Benefit Program

Company News

ETF Daily News
Sep 27th, 2025
SPDR Nuveen ICE Short Term Municipal Bond ETF $SHM Holdings Cut by Eagle Global Advisors LLC

Ameriflex Group Inc. purchased a new stake in SPDR Nuveen ICE Short Term Municipal Bond ETF in the 4th quarter worth approximately $27,000.

ETF Daily News
Sep 17th, 2025
Parallel Advisors LLC Grows Position in iShares Short-Term National Muni Bond ETF $SUB

OLD Mission Capital LLC purchased a new position in shares of iShares Short-Term National Muni Bond ETF in the first quarter valued at about $8,875,000.

Yahoo Finance
Sep 9th, 2025
Old Mission Capital Hires Eugene Davidovich to Lead Launch of Single-Dealer Platform

CHICAGO, Sept. 9, 2025 /PRNewswire/ - Old Mission Capital, a leading global market maker in exchange-traded funds (ETFs), today announced that Eugene Davidovich has joined the firm to lead the development of its first single-dealer trading platform, expected to launch by the end of 2025.

ETF Daily News
Jul 30th, 2025
Valley Forge Investment Consultants Inc. ADV Trims Stake in Schwab Emerging Markets Equity ETF (NYSEARCA:SCHE)

Finally, OLD Mission Capital LLC acquired a new stake in Schwab Emerging Markets Equity ETF in the fourth quarter valued at approximately $20,734,000.

ETF Daily News
Jul 28th, 2025
Global X Silver Miners ETF (NYSEARCA:SIL) Shares Acquired by Kestra Private Wealth Services LLC

Finally, OLD Mission Capital LLC acquired a new stake in Global X Silver Miners ETF in the 4th quarter valued at $948,000.

INACTIVE