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103 software engineer ai jobs at 36 companies in O'Fallon, MO

2mo
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AI Native Software Engineer
Arlington or Milwaukee or Kirkland or Cincinnati or New York City or Cleveland or Oklahoma City or Austin or Albany or Chicago or Pittsburgh or Hartford or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Morristown or San Francisco or Boston or Denver or Philadelphia or Des Moines or Overland Park or Los Angeles or Walnut Creek or Charlotte or Seattle or Carmel or Houston or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego or California or Colorado or District of Columbia or Illinois or Maine or Maryland or Massachusetts or Minnesota or New York or New Jersey or Virginia or Washington or United States
$54k-$235k/yr HybridFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
3+ YOE3+ years cloud-native engineering, 1+ year building/deploying agentic solutions, 1+ year with modern AI platforms, 3+ years Python/Java and IaC (Terraform, Helm); Bachelor's in CS/Engineering or equivalent experience; strong client communication.
Anthropic, Google, OpenAI, Vertex AI, Claude, Claude SDK, Open AI SDK, Lang-graph, Crew AI, Kubernetes, Docker, Terraform, Helm, Python, Java, CI/CD, GitHub
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2w
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Senior AI Software Engineer-TS/SCI clearances (CI poly preferred)
Herndon or Denver or St. Louis
$155k-$200k/yr OnsiteFull Time
Credence Management Solutions
Credence Management Solutions: AI-native federal services.
7+ YOETS/SCI clearance required; bachelor's or master's in computer science, AI/ML, or related field; 7+ years software engineering experience; production AI/ML, generative AI, LLM, TypeScript, and Python experience.
Agent2Agent Protocol, Bedrock Agents, Mastra, CrewAI, Strands, AgentCore, LangChain, LangGraph, OpenAI, Anthropic, Gemini, Amazon Bedrock, Google Vertex AI, TypeScript, Nx, Next.js, Vercel AI SDK, Playwright, Jest, Vite, Python, uv, Pydantic, FastAPI, Unstructured, GitLab CI, VS Code, Cline, Claude Code, Terraform, Open Tofu, AWS CDK, CloudFormation, Infrastructure as Code (IaC), CI/CD
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4d
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AI Engineer
United States or O'Fallon
$82k-$172k/yr RemoteFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
5+ YOERequires 10+ years in lead software development, 5+ years in AI/ML-focused software engineering, a master's degree in computer science, engineering, or related field, and Secret clearance.
Python, Java, C++, JavaScript, Microsoft Azure, Amazon Web Services (AWS), SQL, NoSQL, SAP, TensorFlow, PyTorch
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1mo
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Software Engineer 2 (Backend AI)
Earth City or Atlanta or Hopkins or Denver or Cincinnati or Brookfield or Irving
$98k-$116k/yr HybridFull Time
U.S. Bank
U.S. BankNew York Stock Exchange: USB: Diversified financial services and banking institution.
3+ YOE3+ years software engineering experience, BS or equivalent, experience with full-stack development, cloud-native and DevOps practices, AI/GenAI familiarity preferred, strong communication and problem-solving skills.
Java, Python, Spring Boot, FastAPI, Node.js, REST APIs, GraphQL, Microservices, Azure, AWS, Azure OpenAI, AWS Bedrock, LLM APIs, LangChain, LangGraph, Semantic Kernel, Docker, Kubernetes, CI/CD Pipelines, GitHub, GitHub Copilot, SQL Server, PostgreSQL, MongoDB, Vector Databases, Embedding Models, RAG
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4d
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AI Engineer
United States or O'Fallon
$82k-$172k/yr RemoteFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
5+ YOERequires Secret clearance, 10+ years in lead software development, 5+ years in AI/ML software engineering, a master's degree, programming, cloud, API, database, ERP, deep learning, and DevOps expertise.
Python, Java, C++, JavaScript, Azure, AWS, API, SQL, NoSQL, SAP, TensorFlow, PyTorch, NLP, DevOps
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3mo
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AI Engineer
St. Louis or Atlanta
HybridFull Time
Equifax
EquifaxNYSE: EFX: Global data, analytics, and technology.
7+ YOE7+ years software engineering; strong AI/ML experience; LangChain/LangGraph; GCP; Kubernetes; Python/JavaScript/Java; DevSecOps/FinOps; CI/CD; SQL/NoSQL databases; cloud-native
LangChain, LangGraph, Google Cloud Platform, Kubernetes, Docker, Terraform, CloudFormation, GitHub Actions, Argo CD, Jenkins, SQL, PostgreSQL, MySQL, MongoDB, DynamoDB, Firestore, GitHub Copilot, Gemini, Claude, Llama, Langfuse, Vertex AI
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2d
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Senior Software Engineer, AI
Grand Rapids or Detroit or Kalamazoo or Chicago or Oak Brook or Rosemont or Madison or Milwaukee or Indianapolis or St. Louis or Cleveland or Akron or Cincinnati or Columbus
$110k-$140k/yr OnsiteFull Time
BDO USA
BDO USA: Professional services firm providing assurance, tax, and advisory services.
High school diploma/GED required; bachelor's in computer science or information systems preferred. Requires 4+ years developing applications or automations; experience with two or more listed technologies required.
React, AngularJS, .NET MVC, C#, NodeJS, HTML, CSS, SASS, Azure SQL, Oracle, MySQL, SQL, Azure Cosmos DB, MongoDB, Azure, ADF, SSIS, SSAS, SSRS, Power BI, Microsoft Azure, Azure DevOps, GitHub, Microsoft Visual Studio, Visual Studio Code, Microsoft Entity Framework, REST APIs, Java, AWS, Xamarin, Swift, Objective-C, CI/CD Pipeline, GitHub Actions, Azure Pipelines, Gitlab Runners
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4w
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Applied AI Engineer, Founding Team
Albany or Arlington or Atlanta or Austin or Beaverton or Bentonville or Boston or Carmel or Charlotte or Chicago or Cincinnati or Cleveland or Columbus or Culver City or Denver or Des Moines or Detroit or Hartford or Houston or Irving or Kirkland or Miami or Milwaukee or Minneapolis or Morristown or Mountain View or Nashville or New York City or Oklahoma City or Overland Park or Philadelphia or Pittsburgh or Raleigh or Redmond or Sacramento or San Diego or San Francisco or Scottsdale or Seattle or St. Louis or St. Petersburg or Walnut Creek or United States
$63k-$219k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
5+ YOERequires 5+ years in software engineering, AI/ML, or enterprise technology; experience with retrieval systems, agentic AI, MCP, evaluation frameworks, and a bachelor's degree or equivalent.
Oracle 23ai, Model Context Protocol (MCP), Claude, Anthropic, Oracle EPM, Oracle ERP, Oracle Cloud Infrastructure (OCI)
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2mo
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Agentic AI Developer
O'Fallon, Illinois, United States
$99k-$225k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
3+ YOE3+ years software development experience, proficiency with Python, experience with large language models, embeddings, vector databases, AI agents, and ability to obtain a Secret security clearance; bachelor’s degree required.
Python, Retrieval-Augmented Generation (RAG)
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3mo
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Lead AI Engineer
O'Fallon, Missouri, United States
$140k-$231k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payments technology powering digital economies.
Lead AI Engineer with production AI/ML experience, strong Python, REST APIs, CI/CD, and cloud platforms (AWS, Databricks, Azure); leadership and mentoring.
Power Platform, Copilot Studio, AWS, Databricks, Python, RESTful APIs
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1w
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Senior Software Engineer
Bridgeton or United States
$92k-$164k/yr RemoteFull Time
UnitedHealth Group
UnitedHealth GroupNYSE: UNH: Diversified health care helping people live healthier lives.
8+ YOEBachelor's degree in computer science, information technology, or engineering; 8 years software development; full-stack React, Node.js, and .NET; Azure, data workflows, Git, and AI solution experience.
React, Node.js, .NET, Microsoft Azure, REST, Azure Data Factory (ADF), Databricks, Azure Service Bus, Azure SQL Managed Instance (SQL MI), Delta Lake, Git, Apache Tomcat, Quadient
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1mo
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Staff Software Engineer
St. Louis or Burlington
$111k-$166k/yr HybridFull Time
MilliporeSigma
MilliporeSigma: Merck KGaA's U.S./Canada life science business supplies research tools, bioprocessing products, and services to scientists and drugmakers.
3+ YOEBachelor's degree in a quantitative field and 3+ years in machine learning, data science, search relevance, or ranking systems; strong Python, backend, data engineering, and AI systems expertise.
Python, MLFlow, TensorFlow, PyTorch, scikit-learn, RESTful APIs, SQL, Google Cloud Platform (GCP), AWS, Docker, Git, Kubernetes, Bedrock, Kafka, LangGraph, LangChain, AirFlow, Qdrant, Pandas, NumPy, Claude
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1mo
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Software Engineer - AI (Top Secret Clearance Required)
Alexandria or Chantilly or Gaithersburg or Saint Louis
OnsiteFull Time
North Point Technology
North Point Technology: Woman-owned federal and commercial technology consulting firm serving DoD and Intelligence Community mission programs.
Active Top Secret clearance (TS) required, bachelor’s in CS/Engineering, DoD 8570 IAT Level II/III (e.g., Security+), proficiency in Python, cloud (AWS) architecture, CI/CD, CloudFormation/Terraform, and database development.
Python, GitLab, Jenkins, AWS CloudFormation, Terraform, PostgreSQL, Zabbix, ACAS, Jira, Confluence, RocketChat, AWS, Windows, Linux
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1mo
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Staff Software Engineer
Burlington or St. Louis
$111k-$166k/yr HybridFull Time
MilliporeSigma
MilliporeSigma: Merck KGaA's U.S./Canada life science business supplies research tools, bioprocessing products, and services to scientists and drugmakers.
3+ YOEBachelor’s degree in a quantitative field, 3+ years in machine learning, data science, search relevance, or ranking systems, and expertise in Python, backend systems, data engineering, and AI/LLM production systems.
Python, MLFlow, TensorFlow, PyTorch, Scikit-learn, REST API, Pandas, NumPy, AWS, Google Cloud Platform (GCP), Docker, Git, Kubernetes, Bedrock, Kafka, LangGraph, LangChain, AirFlow, Qdrant, SQL, NoSQL, CI/CD, Claude
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Java AI Engineer
O'Fallon, Missouri, United States
$90k-$110k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesBSE: 532540: Global leader in IT services, consulting, and business solutions.
5+ YOE5+ years Java development with Spring Boot, Agentic AI experience, SQL with Oracle/PostgreSQL, REST API, event-driven architecture, CI/CD and Jenkins; Kafka and PCF exposure preferred.
Java, Spring Boot, Agentic AI, SQL, Oracle, PostgreSQL, REST, Event-Driven Architecture, CI/CD, Jenkins, Kafka, Pivotal Cloud Foundry
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Software Engineer - Intermediate
St. Louis, Missouri, United States
HybridFull Time
Equifax
EquifaxNYSE: EFX: Global data, analytics, and technology.
2+ YOEBachelor's degree or equivalent experience; 2+ years with Java, Python, JavaScript, build tools, web development, testing, and cloud technology. AI-assisted development experience required.
Java, Python, JavaScript, Maven, Gradle, HTML, CSS, GCP, AWS, Azure, Git, GitHub, JUnit, Jenkins, Spring Boot, GitHub Copilot, Data Fabric, CSA Toolset, Atlassian
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1mo
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Software Engineer I
Fenton, Missouri, United States
HybridFull Time
Maritz
Maritz: Privately held professional services serving businesses with events, incentives, loyalty, rewards, and automotive sales programs.
1+ YOE1-2 years relevant experience or equivalent practical experience; knowledge of web frameworks, OOP, REST services, databases, basic cloud (AWS/GCP/OCI), secure coding, and AI-assisted development tools.
GitHub Copilot, Claude, AWS, GCP, OCI, REST
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Software Engineer
United States or Austin or Boston or Chattanooga or Chicago or Dallas or Denver or Houston or Jefferson City or Kansas City or Madison or Milwaukee or Minneapolis or Nashville or Omaha or Providence or Springfield or Saint Louis or Washington
$76k-$234k/yr HybridFull Time
Husch Blackwell
Husch Blackwell: U.S. full-service law firm providing legal counsel, litigation, regulatory, and transactional services to business and institutional clients.
5+ YOEBachelor's or equivalent,5+ years application engineering experience,full‑stack proficiency with backend focus,experience with generative AI and cloud deployment (Azure preferred),strong architecture and communication skills.
Python, Javascript, TypeScript, React, Vue, Azure, CI/CD, LLM APIs
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Principle Architect - Software/ AI Native Engineer
St. Louis, Missouri, United States
$140k-$170k/yr OnsiteFull Time
Tech Mahindra
Tech MahindraNSE: TECHM: Global provider of IT services, consulting, and business solutions.
12+ YOE12+ years experience designing cloud-native software and AI-native platforms; strong AWS knowledge; experience with AI platforms, developer platforms, API integration and AI governance.
Model Context Protocol (MCP), GitHub Copilot, Claude Code CLI, AI Foundry, Bedrock, OpenAI, Anthropic, LLM integrations, Agentic systems, AI orchestration frameworks, AWS
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Senior Software Engineer - St. Louis
St. Louis, Missouri, United States
OnsiteFull Time
London Stock Exchange Group
London Stock Exchange GroupLondon Stock Exchange: LSEG: Global financial markets infrastructure and data provider.
Experience with Java, Python, C++ or C#; CI/CD, unit testing and automation in cloud platforms (AWS or Azure); bachelor's in CS or related or equivalent experience; strong problem-solving and communication skills; interest in AI; financial services experience preferred.
Java, Python, C++, C#, CI/CD, unit testing framework, AWS, Azure
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