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Freelance High Frequency Trading Software Engineer Jobs

$109K - $149K/yr

Expert-level proficiency in C++ or Rust programming ... Strong background in high-frequency trading (HFT) or market making. * Experience with low-latency ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Responsible for performance engineering of the enterprise software architecture. * Significant code ... switching, high frequency trading systems or global real-time event streaming systems etc.

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Freelance High Frequency Trading Software Engineer information

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How much do freelance high frequency trading software engineer jobs pay per hour?

As of Aug 9, 2026, the average hourly pay for freelance high frequency trading software engineer in the United States is $47.71, according to ZipRecruiter salary data. Most workers in this role earn between $24.28 and $61.78 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a freelance high frequency trading software engineer, and why are they important?

To thrive as a Freelance High Frequency Trading (HFT) Software Engineer, you need advanced programming skills (C++, Python, or Java), deep knowledge of algorithms, and a strong background in mathematics or computer science. Experience with low-latency systems, network optimization, and familiarity with industry-standard trading platforms or certifications like CFA can be highly valuable. Exceptional problem-solving abilities, adaptability, and strong communication skills help you collaborate with clients and respond quickly to changing requirements. These skills are essential for building robust, high-performance trading systems that compete effectively in fast-moving financial markets.

What are some common challenges faced by freelance high frequency trading software engineers when working with clients remotely?

Freelance HFT software engineers often encounter challenges such as aligning with clients' rapidly evolving trading strategies and ensuring low-latency performance under stringent requirements. Communication can be complex due to the highly technical and confidential nature of HFT algorithms, necessitating clear documentation and secure collaboration tools. Additionally, freelancers must adapt quickly to diverse technology stacks and exchange APIs, while efficiently coordinating with quantitative analysts, traders, and IT support teams who may be located in different time zones.

What is a freelance high frequency trading software engineer?

A Freelance High Frequency Trading (HFT) Software Engineer is an independent professional who designs, develops, and maintains trading algorithms and systems for high frequency trading firms or clients. They specialize in creating software that can execute trades at extremely high speeds, often within microseconds, and handle large volumes of data. Their role typically includes optimizing code for low latency, ensuring system reliability, and implementing complex trading strategies. Freelance HFT engineers work on a contract basis, allowing them to serve multiple clients or projects rather than being tied to a single employer.
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Infographic showing various Freelance High Frequency Trading Software Engineer job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 16% Part Time, and 3% Contract. Highlights an 90% Physical, 1% Hybrid, and 9% Remote job distribution, with an average salary of $99,230 per year, or $47.7 per hour.

Senior Software Engineer High Frequency Systems & Communications

The Marlin Alliance

San Diego, CA • Hybrid

$150K - $200K/yr

Full-time

Posted 24 days ago


Job description

Senior Software Engineer High Frequency Systems & Communications

The Senior Software Engineer will serve in a role embedded within a DoD client laboratory environment. This position supports software engineering through requirements analysis, software design, and development, with a focus on system-level integration and communication frameworks for high frequency systems and communications.

Incorporated in 2002, The Marlin Alliance is a digital transformation company dedicated to ensuring our clients compete and win in tomorrow's digital world. We specialize in creating technical solutions that allow for seamless execution of automated business processes and the generation of governed, machine-consumable data. From strategic planning to advanced analytics and cybersecurity, our team provides cutting-edge, cross-disciplinary solutions. We are seeking motivated professionals who share our agile, solution-oriented mindset and are ready to deliver the real, practical results relied upon by our clients.

Location: Fort Huachuca, AZ, Hybrid
Clearance: DoD Secret clearance required; ability to obtain Top Secret/SCI clearance preferred
Travel: Up to 10% travel may be required

Responsibilities:

  • Provide software development support for projects from concept to final product delivery
  • Implement software features, working closely with backend and DevSecOps engineers to integrate them into a functioning system
  • Collaborate with internal and external partners to understand requirements and deliver software systems that meet mission needs
  • Participate in code reviews and assist in implementing proof-of-concept solutions
  • Lead software development teams through all phases, from concept and prototyping to final product delivery and sustainment
  • Apply Modular Open Systems Approach (MOSA) principles to system-level integration and communication frameworks

Required Qualifications:

  • Bachelor of Science in Computer Science, Computer Information Systems, Information Technology, or a related field
  • 10+ years of software architecture/development, software system integration, and/or systems engineering experience
  • Detailed knowledge of C/C++, Java, and Python, with at least 10 years of programming experience in each
  • Proficiency with both Linux and Windows operating systems
  • Experience with containerization and CI/CD pipeline technologies
  • Familiarity with Android/Qt and/or Kotlin frameworks
  • Experience leading software development teams through all phases, from concept and prototyping to final software product delivery and sustainment
  • Experience with Modular Open Systems Approach (MOSA)
  • Detailed knowledge of Agile development methodologies (Scrum/Kanban) and DevSecOps processes and tools (GitLab, Jenkins, Artifactory, SonarQube)
  • Detailed knowledge of design patterns, enterprise architecture patterns, and software engineering best practices
  • Detailed knowledge of Object-Oriented Programming (OOP)
  • Strong written and verbal communication skills, with the ability to convey technical concepts to diverse audiences
  • Ability to analyze technical challenges and contribute to effective solutions in a team environment
  • Must be a US citizen and possess an active DoD Secret security clearance

Preferred Qualifications:

  • Experience with TRAX software
  • Experience with waveforms
  • Experience with additive manufacturing
  • Ability to obtain Top Secret/SCI clearance

Work Environment and Mental/Physical Demands:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this position. Reasonable accommodations may be made to enable individuals with disabilities to perform the functions.

  • Typical office environment with no unusual hazards
  • The noise level in the work environment is usually moderate
  • Constant sitting while using the computer terminal
  • Constant use of sight abilities while reviewing documents
  • Constant use of speech/hearing abilities for communication
  • Occasional reaching, stooping, kneeling, or crouching may be required
  • Occasional lifting up to 20 pounds
  • Constant use of mental alertness
  • Frequent work under deadlines

Job Classification: Associate II
Salary Range: $150,000 - $200,000

Disclaimer:

This job description in no way states or implies that these are the only duties to be performed by the employee(s) incumbent in this position. Employees will be required to follow any other job-related instructions and to perform any other job-related duties requested by any person authorized to give instructions or assignments. All duties and responsibilities are essential functions and requirements and are subject to possible modification to reasonably accommodate individuals with disabilities.

To perform this job successfully, the incumbents will possess the skills, aptitudes, and abilities to perform each duty proficiently. Some requirements may exclude individuals who pose a direct threat or significant risk to the health or safety of themselves or others. The requirements listed in this document are the minimum levels of knowledge, skills, or abilities.

This document does not create an employment contract, implied or otherwise, other than an "at-will" relationship.

An Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities.