Senior Software Engineer – Backend

Job order - J0626-1063 - Permanent Full Time Title: Senior Software Engineer — Backend / Rules Category: Software Development/ Engineering Location: Washington, District of Columbia, United States Job Description We're building an AI‑assisted platform that helps our client audit federal financial data, and we need a senior backend engineer to build its decision‑making core: a rules engine that takes the facts pulled from client‑supplied data and applies complex eligibility and subsidy rules to determine whether a payment was correct. The defining requirement is trustworthiness — the same inputs must always produce the same result, and every decision must be fully explainable and auditable, because real federal dollars and audit findings ride on it. This position is located in our Fairfax, VA, Knoxville, TN, Lebanon, VA, Belton, TX or Lafayette, LA office; however, a hybrid working model is acceptable. Responsibilities • Design and build the rules engine: given a set of facts about a case, apply the governing rules to reach a decision, with the guarantee that identical inputs always yield identical, auditable outputs. • Build the framework that lets the rules be authored and versioned, including logic that applies the right rules for each specific program (the programs have different rules across many sub‑programs). • Build a thorough automated test suite — reproducibility and traceability are first‑class requirements, not afterthoughts. • Support rolling out updated rule versions and parameters in future audit cycles. Required Qualifications • Bachelor's degree in Computer Science, Engineering, or a related field. • 7+ years of professional software engineering experience. • Strong deterministic backend development. • Demonstrated experience with rules‑engine / decision‑logic design and versioned‑artifact discipline. • Strong automated‑testing discipline. • Must be a U.S. person and able to obtain the suitability/clearance required for an AWS GovCloud environment. Preferred Qualifications • Experience in regulated domains where reproducibility and auditability are mandatory (finance, healthcare, government benefits). • Familiarity with policy‑as‑code or configuration‑driven rule systems. • Exposure to benefits‑program eligibility/subsidy logic. 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 $89,600.00 - $223,200.00. Benefits • 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 Equal Employment Opportunity 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 [email protected]. 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. 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 U.S. 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.