Senior .NET Algo Trading Engineer

Position Description:

We're growing rapidly and are looking for a Trading Engineer responsible for analyzing business processes, identifying areas for improvement, and implementing solutions to enhance efficiency and effectiveness. This role involves working closely with stakeholders to understand their needs and translating them into actionable requirements.
Role Overview
The role focuses on designing, building, and optimizing high?performance trading system components for front?office use. It combines deep .NET engineering expertise with hands?on algorithmic trading experience, market?microstructure understanding, and advanced backtesting capabilities. The engineer will work closely with traders, quants, and technology teams to deliver robust, low?latency execution and strategy?implementation platforms.
This position is based out of Houston with three days onsite(Hybrid).
Key Responsibilities

. Architect and develop high?performance C# .NET trading components with a focus on scalability, reliability, and low latency
. Implement multithreaded and asynchronous workflows for real?time trading and market?data processing
. Integrate with exchange APIs and market?data feeds, ensuring deterministic and fault?tolerant behavior
. Build and maintain algorithmic trading strategies, including execution logic and signal?driven workflows
. Develop advanced backtesting frameworks, including walk?forward optimization and robustness testing
. Collaborate with traders and quants to translate trading ideas into production?ready systems
. Design modular system components that support rapid iteration, simulation, and deployment
. Ensure best practices in performance tuning, monitoring, and system observability

Required Skills. Strong proficiency in C# .NET, including best practices for performance and scalability.. Multithreading and low-latency apps. Asynchronous messaging. Understanding of market microstructure (orderbooks, exchanges, types of orders). Front office algo trading experience (preferably strategy implementation). Proficiency in advanced backtesting methodologies, including walk-forward optimization and robust testing.. Experience integrating with market data feeds and exchange APIs.. Ability to design and implement modular and scalable trading system components.Nice to have Skills. Knowledge of Cloud Platforms. Experience of ETRM systems for trading. Gas/Power Trading knowledge - Short-term trading, physical assets trading (CCGT, Wind, Solar, Battery). Forex Trading experience. Risk - Modelling & understanding of risk & risk management.. Commodity Modelling - Energy (power, gas, environmental products) and meteorology.. UI experience (Blazor). Knowledge of Information Management, data strategy and governance. Commercial skills in Value Assurance, Value estimation and Realization, end-to-end value mapping.

Professional Qualifications & Skills. MSc 8+ years work experience as software developer, with at least 4 years productionizing and releasing models.. Degree level in STEM, computer science, engineering, mathematics, or a relevant field of applied mathematics.. Good understanding of Trading terminology and concepts (incl. financial derivatives), gained from experience working in a Trading of Finance environment.CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. To support the ability to reward for merit-based performance, CGI typically does not hire individuals at or near the top of the range for their role. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $88,200- $214,800.

CGI's benefits are offered to eligible professionals on their first day of employment to include:

. Competitive compensation
. Comprehensive insurance options
. Matching contributions through the 401(k) plan and the share purchase plan
. Paid time off for vacation, holidays, and sick time
. Paid parental leave
. Learning opportunities and tuition assistance
. Wellness and Well-being programs

Other Information:
CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. To support the ability to reward for merit-based performance, CGI typically does not hire individuals at or near the top of the range for their role. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $109,500.00 - $138,600.00.
CGI's benefits are offered to eligible professionals on their first day of employment to include:
. Competitive compensation
. Comprehensive insurance options
. Matching contributions through the 401(k) plan and the share purchase plan
. Paid time off for vacation, holidays, and sick time
. Paid parental leave
.Learning opportunities and tuition assistance
. Wellness and Well-being programs
#LI-SG2
#DICE

Skills:

• C#
• Exchange-traded funds (ETFs)
• Marketing Strategy & Policy
• Energy

What you can expect from us:

Together, as owners, let's turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because...

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.

Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team-one of the largest IT and business consulting services firms in the world.

Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.

CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at . You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned.

We make it easy to translate military experience and skills! Click here to be directed to our site that is dedicated to veterans and transitioning service members.

All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances.

CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI's legal duty to furnish information.