Sr. Internal Auditor
Bi-State Development
St. Louis, MO · Posted September 18, 2026
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Where St. Louis, MO ranks
Where St. Louis, MO placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #9Best all-round cities for new graduates in the Midwest52 / 100 · of 20
- #9Cities hosting the most business conferences in the Midwest8 conferences · of 12
- #9Cities hosting the most legal services conferences4 conferences · of 17
- #11Best cities for government pay after cost of living$123k · of 18
- #11Best cities for entry-level jobs that want AI skills in the Midwest4% · of 52
- #12Best all-round cities for remote workers in the Midwest42 / 100 · of 20
Rankings about finance jobs
- Best cities for finance jobs #1 New York (1,932 openings)
- Best cities for finance pay after cost of living #1 San Mateo ($162k)
- Most requested AI skills in finance jobs #1 AI tools in daily work (4.3%)
- AI tools named most often in finance jobs #1 Claude (0.55%)
- Employers with the most finance jobs #1 Amazon (475 roles)
How AI is used in this kind of work
Among accountants and auditors, AI is already used for a large share of the tasks. Measured exposure for accountants and auditors: 35% (high).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
Skills this job asks for
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About the job
The Senior Internal Auditor performs advanced professional internal audit work involving audits of greater-than-normal complexity. This position is responsible for examining and evaluating management activities to ensure the reliability and integrity of information, compliance with policies, procedures, laws, and regulations, the safeguarding of Agency assets, and the economical and efficient use of resources. This role also supports the achievement of established goals and management objectives through independent analysis, evaluation, and recommendations. Job Responsibilities • Performs or leads audits, reviews, investigations, management studies, and other internal control–related activities as assigned. • Ensures audit engagements are completed within established budget and time constraints. • Develops audit programs that provide effective and comprehensive audit coverage. • Conducts entrance and exit conferences to clarify audit objectives and review findings, recommendations, and auditee responses. • Collects, analyzes, and evaluates data related to accounting practices, financial reporting, internal controls, and program operations to assess alignment with policies and procedures. • Identifies and documents root causes of issues to determine cause‑and‑effect relationships. • Develops recommendations to enhance operational efficiency, strengthen internal controls, and improve compliance. • Performs follow‑up reviews to assess the effectiveness of corrective actions and implemented recommendations. • Conducts fieldwork in a professional, competent, and well‑documented manner. • Prepares complete and accurate workpapers that provide evidential support for findings and recommendations. • Prepares and/or reviews detailed audit reports that clearly present findings, recommendations, and auditee responses. • Conducts special investigations involving sensitive or confidential matters with discretion and professionalism. • Identifies and recommends process improvements to enhance audit efficiency and support the Internal Audit Department’s audit plan. • Performs research on audit practices and public transportation industry issues to remain informed on developments affecting the Agency. • Assists external auditors with work related to the Agency’s annual audit.