129 api engineer jobs at 67 companies in Wentzville, MO

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
2mo
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Checkmate API Developer
Clayton or Kansas City or United States
RemoteFull Time
Husch Blackwell
Husch Blackwell: A nationwide firm providing industry-focused legal and litigation services.
2+ YOEMaster's in CS/Information Systems required; 2+ years software development experience. Must have .NET/.NET Core, C#, SQL Server, Entity Framework Code First, REST/JSON, Azure Function Apps, Microsoft Azure Web/Api/Logic Apps, ETL, unit testing, and Power BI experience.
.NET, .NET Core, C#, SQL Server, Entity Framework Code First, REST API, JSON, ETL, Azure Function Apps, Microsoft Azure Web Apps, Microsoft Azure Api Apps, Microsoft Azure Logic Apps, Microsoft Power BI
1w
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Engineer III - API Office
Tempe or St. Louis
HybridFull Time
Edward Jones
Edward Jones: Offers investment management and financial planning through local branches.
5+ YOE5+ years building scalable APIs and integrations; proficiency with Java, Spring Boot, Python, Node.js, Docker, Kubernetes, Azure; experience with OpenAPI, OAuth2/OpenID Connect, GitHub Actions; strong API design and security skills.
Java, Spring Boot, Python, Node.js, Docker, Kubernetes, Microsoft Azure, OpenAPI Specification (OAS), OAuth 2.0, OpenID Connect, GitHub Actions, Rust, MuleSoft Anypoint Platform
1w
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Senior API Management Engineer - Kong Enterprise Deployment
Springfield or St. Louis
$123k-$167k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
7+ YOE7+ years IT experience with API management, cloud operations, Kong Enterprise, OpenShift, AWS, Linux; bachelor’s degree in IT/CS; Top Secret/SCI clearance required; US citizenship.
Kong Gateway, Red Hat OpenShift, AWS, Linux, GitLab CI, Nexus, Habor
1w
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Senior API Management Engineer - Kong Enterprise Deployment
Springfield or St. Louis
$123k-$167k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
7+ YOEBachelor's in IT or CS, 7+ years IT experience with API management and cloud operations, US citizenship, current Top Secret/SCI clearance, expertise with Kong and OpenShift, AWS and Linux experience.
Kong Gateway, Red Hat OpenShift, AWS, RedHat, Linux, GitLab CI, Nexus, Habor
1mo
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Sr Software Developer - API Integration
Creve Coeur or St. Louis
$110k-$130k/yr HybridFull Time
First Bank
First Bank: A family-owned bank providing financial solutions to businesses and individuals.
5+ YOE5+ years software development experience; hands-on Power Apps/Power Automate and Power Platform, REST/JSON API integration, Microsoft Azure, CI/CD and DevOps, Dataverse, Infrastructure as Code, and data mapping; knowledge of data privacy.
Microsoft Power Platform, Power Apps, Power Automate, Dataverse, Microsoft Azure, RESTful APIs, JSON, CI/CD, DevOps, Infrastructure as Code, ServiceNow, RPA, Microsoft SharePoint
1mo
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Senior Software Engineer - ServiceNow/Javascript/API
St. Louis or Brentwood or Richmond Heights or Clayton or Maplewood
HybridFull Time
Enterprise Mobility
Enterprise Mobility: Provider of vehicle rental and diverse mobility solutions.
3+ YOE3+ years software development, 2+ years ServiceNow and JavaScript experience, API scripting (REST/SOAP), shell scripting (SSH/PowerShell), US work authorization, reside in St. Louis area, security-minded.
ServiceNow, JavaScript, REST, SOAP, SSH, PowerShell, Agile, Scrum
2d
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DCIM Development Engineer - Senior Infrastructure Engineer
Irving or Shoreview or Manassas or Charlotte or Saint Louis
$87k-$168k/yr OnsiteFull Time
Wells Fargo
Wells FargoNYSE: WFC: Global provider of banking, investment, and mortgage financial services.
4+ YOE4+ years infrastructure engineering experience; developing applications, integrations, and automation; strong SQL and Python skills; experience with APIs, PowerShell, and enterprise tooling.
Python, PowerShell, Microsoft SQL Server, SQL, APIs, ServiceNow, Git, GitHub, Azure DevOps, DCIM
3w
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MES Engineer
Kalamazoo or Pittsburgh or St. Louis
$80k-$120k/yr HybridFull Time
GrayMatter
GrayMatter: Industrial technology solutions and automation engineering services.
4+ YOEBachelor's in engineering preferred, 4+ years MES experience, SQL and REST API experience, proficiency with VBA/Python/Java Script, strong attention to detail, problem solving, and customer service; willingness to travel.
VBA, Python, Java Script, TrackSYS, Plant Applications, Sepasoft, Production Center, SQL, REST API, Velotic (GE) Proficy Plant Applications, Microsoft Office, TCP/IP
1mo
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Sr. Engineer - Oil & Gas
Lisle or St. Louis or Charlotte or Indianapolis or Greenwood Village
HybridFull Time
Farnsworth Group
Farnsworth Group: A national architectural, engineering, and surveying firm providing multidisciplinary project services and client-focused solutions.
5+ YOEBS in engineering (ABET), 5-15 years oil/gas engineering experience, 3+ years project management, knowledge of DOT/API/ANSI/ASME standards, Microsoft Word/Excel/PowerPoint/Project proficiency, valid driver’s license, willing to travel.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Project
1d
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Lead C++ Observability Engineer
St. Louis, Missouri, United States
OnsiteFull Time
London Stock Exchange Group
London Stock Exchange GroupLondon Stock Exchange: LSEG: Provides financial market infrastructure and global data analytics services.
Proven C++ proficiency, deep observability engineering experience (distributed tracing, real-time metrics), leadership and coaching skills, SLI/SLO design experience, cloud-native/Kubernetes familiarity, and strong analytical and communication abilities.
C++, Kubernetes, eBPF, GitOps, API
1mo
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Senior Solutions Engineer
Arlington or Atlanta or Austin or Boston or Charlotte or Chicago or Dallas or Houston or Indianapolis or Kansas City or Minneapolis or New York or Philadelphia or St Louis
$168k-$252k/yr RemoteFull Time
Amplitude
AmplitudeNasdaq: AMPL: Develops digital analytics software for tracking customer product behavior.
5+ YOE5+ years in software pre-sales; hands-on SQL, Python or R, and APIs; experience closing enterprise technical evaluations; comfortable presenting to engineers and executives.
Amplitude, Python, SQL, APIs, R, Google Analytics 4, Adobe Analytics, Mixpanel, Tableau, Looker, Microsoft Power BI
1w
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Data Engineer
St Louis, Missouri, United States
HybridFull Time
Build-A-Bear
Build-A-BearNYSE: BBW: Sells customizable stuffed animals and provides interactive retail experiences.
5+ YOE5+ years data engineering experience, bachelor’s in CS/IS/data engineering, skilled in SQL, Python, Spark, cloud data platforms (Microsoft Azure), ETL/ELT design, API integrations, and data modeling.
SQL, Python, Spark, Microsoft Azure, Data Factory, Synapse, Databricks, Data Lake, Power PI, Tableau, Looker, Microsoft Dynamics 365, Salesforce
3mo
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AI Engineer
O Fallon, Missouri, United States
OnsiteFull Time
Automotive Product Consultants
Automotive Product Consultants: Provides sales, finance, and insurance services to automotive dealerships.
2+ YOEBachelor's in CS/Data Science/AI or related; 2+ years AI/ML; Python; TensorFlow/PyTorch/scikit-learn; SQL; APIs; problem solving.
Python, TensorFlow, PyTorch, scikit-learn, SQL, Pandas, APIs, Cloud
4w
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Sales Engineer - Mid-West US (Minnesota)
Minnesota or Wisconsin or St. Louis
RemoteFull Time
BlinkOps
BlinkOps: Agentic security automation platform for enterprise workflows.
3+ YOE3+ years in sales/solutions engineering for cybersecurity; strong security operations knowledge; hands-on with APIs, JSON, YAML, jq; experience with SIEM, SOAR, EDR, IAM, cloud services; demo and POC execution skills.
APIs, JSON, YAML, jq, SIEM, SOAR, EDR, IAM, GRC, AWS, Azure, GCP, Blink UI
1mo
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Senior Developer
Sunset Hills, Missouri, United States
RemoteFull Time
Grimco
Grimco: Manufacturer and distributor of signs and sign-making supplies.
5+ YOE5+ years professional software development, strong SQL and relational DB skills, experience building system integrations (APIs/EDI), ability to work with legacy code, clear communication, and security awareness.
SQL, RPG, IBM i, IBM Power Systems, EDI, X12, REST, JSON, APIs, ERP, Microsoft Azure, AWS
3mo
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Software Engineer II
O'Fallon, Missouri, United States
$92k-$147k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
Experience building applications with Power Apps; strong JS/HTML, API integrations, SQL, and Azure knowledge.
Power Apps, Power Automate, Dataverse, SharePoint, Excel, SQL, APIs, JavaScript, HTML, Azure, Git
2mo
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Principal Software Engineer
Atlanta or Boston or Morristown or Plano or St. Louis or St. Petersburg or Hyderabad
HybridFull Time
Zelis
Zelis: Providing healthcare payment and claims cost management solutions.
8+ YOE8+ years backend software engineering; degree or equivalent; cloud, IaC, CI/CD; APIs; strong communication; leadership.
TypeScript, Node.js, PostgreSQL, Angular, AWS, Terraform, Elasticsearch, CI/CD, SASS
1w
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Lead Software Engineer
O'Fallon, Missouri, United States
HybridContract
Delan Associates
Delan Associates: Provides engineering and professional services to government agencies.
Bachelor's in CS/IS, strong full-stack Java, API, Angular, React skills; experience with Agentic frameworks, MCP and LLM integrations; Qlik Sense and data architecture experience; strong analytical and communication skills.
Java, APIs, Angular, React, Agentic Frameworks, MCP, LLMs, Qlik Sense, Tableau, Power BI, WebFocus, Hadoop, Kafka
2mo
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Forward Deployment AI Engineer
Denver or St. Louis or Indianapolis
$120k-$150k/yr FieldFull Time
Lyra Technology Group
Lyra Technology Group: Operates a global portfolio of managed IT service providers.
2+ YOEBachelor's degree,2+ years software/AI engineering or technical consulting,proficiency in Python and REST APIs,experience with LLM APIs (OpenAI, Anthropic, Gemini),knowledge of RAG and agent patterns,strong communication.
Python, REST APIs, LangChain, LangGraph, AutoGen, OpenAI, Anthropic, Gemini, Zapier, Make, n8n, Pinecone, Weaviate, Chroma
2w
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Solutions Engineer
Indiana or Ohio or Santa Clara or St. Louis or Bangalore or London or Paris or Melbourne or Taipei or Tokyo
$144k-$205k/yr FieldFull Time
Netskope
NetskopeNASDAQ: NTSK: Cloud-native cybersecurity and data protection platform for enterprises.
5+ YOE5+ years as a solutions/system engineer, strong presentation and communication skills, hands-on experience with Linux/MacOS/Windows, cloud platforms, identity and security integrations, and customer-facing sales experience.
Linux, MacOS, Windows, Android, iOS, HSM, SAML, SCIM, SIEM, SOAR, EDR, SD-WAN, Active Directory, ADFS, Azure AD, AWS, Azure, GCP, Python, REST API, Bluecoat, Symantec, McAfee, Checkpoint, Cisco, Juniper