C++ Software Engineer (Hiring Immediately)

Old Mission
London

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

Old Mission Capital LLC, is looking to add a C++ Software Engineer to join our team in London. In this role, you will be building and optimizing our current automated trading infrastructure, and you will also be tasked with working directly with our Traders and Quants to develop the next generation of the firm’s trading algorithms and strategies. Additionally, you will be responsible for creating and developing scalable multi-tiered applications. Our Software Engineers work on small collaborative teams and are a key component for our success.

Required Skills

  • BS/BA degree in Computer Science, Engineering, or another technical related field
  • 7+ years of experience developing applications in modern C++
  • Experience with C++ 11/14/17/20, Linux and Python and BASH scripting
  • In-depth knowledge of the Linux kernel, systems programming
  • A passion for solving challenging problems
  • Strong systems knowledge and prefer some experience in developing low latency systems
  • Experience with writing applications connecting to exchange API’s or using network protocols
  • Experience with parallel, concurrent, and multi-threaded programming
  • Prefer experience with low-latency computing and hardware-level design
  • Experience with Git, SVN, Mercurial

Benefits and Perks

  • Competitive salary with discretionary annual bonus
  • Fully paid private medical, dental, vision with extended coverage and life insurance
  • Robust Pension Scheme, income protection, and salary exchange
  • Fully stocked kitchen and free on-site lunch daily
  • Season Ticket Loan Scheme
  • Tuition Reimbursement 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.

Posted 2026-09-01

Recommended Jobs

Physics ECT Role - Enfield Outstanding School

Marchant Recruitment
Enfield, Greater London

School Status & Location Sector: Outstanding Ofsted-rated High School, Outer London. Borough: Enfield. Start Date: Permanent, full-time role commencing January 2026. The Opportunity & S…

View Details
Posted 2025-11-07

Software Engineer - Cumberland/FICCO Tools Engineering

DRW
London

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and th…

View Details
Posted 2026-06-27

Key Account Director - London

junior
London

About Junior We're building cutting-edge LLM-powered tools to supercharge the investment research process for private market investors. Our clients include several of the world's top 10 private eq…

View Details
Posted 2026-07-24

Biology Specialist Required - Independent School in Camden

Marchant Recruitment
London

A prestigious Independent school in Camden is seeking a meticulous Biology Teacher for a full-time, permanent role. This position is perfect for a scientist who prizes total precision and seeks to le…

View Details
Posted 2026-04-28

LKS2 Teaching Opportunity | Primary School in West London

Marchant Recruitment
London

A vibrant and ambitious three-form entry primary school in Hounslow is seeking an enthusiastic and dedicated Year 3 Teacher to join their team as soon as possible. This is a full-time, permanent…

View Details
Posted 2025-11-18

DATACENTRE OPERATIONS ENGINEER - HPC INFRASTRUCTURE Lefdal Mine Datacentre, Norway

Quant Capital
London

DATACENTRE OPERATIONS ENGINEER – HPC INFRASTRUCTURE Lefdal Mine Datacentre, Norway Quant Capital is recruiting for a global trading firm seeking a Datacentre Operations Engineer to support a …

View Details
Posted 2025-06-05

Associate (Hiring Immediately)

Accordion
London

Company Overview We are the better way to work in finance. As private equity’s value creation partner, we sit at the heart of PE—where sponsors and CFOs meet. Through financial consulting rooted in …

View Details
Posted 2026-03-18

Client Lead (Parental Leave Cover)

wppmedia
London

About WPP Media WPP is the trusted growth partner for the world’s leading brands. With exceptional talent, trusted data and intelligence, and world-class partnerships – all united by our pioneerin…

View Details
Posted 2026-06-18