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957 api engineer jobs at 451 companies in Illinois

3mo
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API Engineer
Scott Air Force Base, Illinois, United States
$87k-$198k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
Experienced backend/platform engineer designing, deploying, and operating enterprise API platforms; Java or Python; Docker, Helm, Kubernetes, GitOps; API gateways and cloud (AWS/Azure/GCP); Secret clearance; HS diploma or GED.
Java, Python, Apigee, Gravitee, Kong, AWS API Gateway, Mulesoft, Docker, Helm, Kubernetes, GitOps, HTTP, gRPC, WebSockets, AWS, Azure, GCP, Git, Jenkins, JIRA, Confluence, Nexus, Bitbucket, SQL, Node.js, Groovy, Scala, Spring Cloud, Spring Core, Spring Boot, Spring Data, Kafka, RabbitMQ
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3mo
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API Engineer
Scott AFB, Illinois, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
Backend/platform engineering with Java or Python, experience operating API gateways (Apigee, Kong, Mulesoft, AWS API Gateway), DevOps (Docker, Helm, Kubernetes, GitOps), cloud (AWS/Azure/GCP), Git/Jenkins/JIRA, and eligible for Secret clearance; HS diploma/GED required.
Java, Python, Apigee, Gravitee, Kong, AWS API Gateway, Mulesoft, Docker, Helm, Kubernetes, GitOps, HTTP, gRPC, WebSockets, AWS, Azure, GCP, Git, Jenkins, JIRA, Confluence, Nexus, Bitbucket, SQL, Node.js, Groovy, Scala, Spring Cloud, Spring Core, Spring Boot, Spring Data, Kafka, RabbitMQ
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1w
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Sr. Developer, API
Illinois, United States
$119k-$155k/yr RemoteFull Time
YPO
YPO: Nonprofit global leadership community helping chief executives become better leaders through lifelong learning and idea exchange.
5+ YOERequires 5+ years of security engineering experience, 3+ years in cloud infrastructure security, IaC, IAM, secure cloud architecture, AI/ML security, API security, scripting, and security tooling; bachelor's degree or equivalent experience.
RESTful, GraphQL, AWS API Gateway, Kafka, AWS EventBridge, AWS Lambda, Step Functions, Auth0, Okta, OAuth 2.0, OpenAI, RAG, Google Gemini, Datadog, Terraform, AWS CDK, AWS Organizations, Control Tower, Elasticsearch, OneTrust, GitHub Actions, Azure DevOps, GitLab CI, Jenkins, CloudFormation, ARM, Kubernetes, SAST, DAST, SCA, Python, OAuth/OIDC, RBAC, SOC 2, ISO 27001, NIST, iOS, Android
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1mo
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Principal Engineer API Platform
Minnesota or New York or Texas or Illinois
$144k-$288k/yr RemoteFull Time
CVS Health
CVS HealthNYSE: CVS: Diversified healthcare integrating retail, pharmacy, and insurance services.
10+ YOE3+ Mgmt10+ years software engineering with enterprise API design, API security (OAuth2/OIDC/mTLS), API gateways, cloud platforms, Java/Node.js, and experience shaping technical direction across teams.
OAuth 2.0, OIDC, mTLS, Apigee, Kong, Azure APIM, JavaScript, TypeScript, Node.js, React, Java, Spring Boot, GCP, AWS, Azure, GraphQL, Kafka, FHIR, HL7, MCP, CI/CD, LLM
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1mo
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Senior API Integration Developer
Bloomington, Illinois, United States
$113k-$156k/yr HybridFull Time
COUNTRY Financial
COUNTRY Financial: Providing insurance and financial services for individuals and businesses.
7+ YOE7+ years integration experience with MuleSoft and Azure APIM, strong API design, DataWeave/JSON/XML/SQL skills, CI/CD and production support experience.
Mule 4, Anypoint Platform, CloudHub 2.0, DataWeave, RAML, OpenAPI, REST, SOAP, JSON, XML, SQL, Azure API Management, Azure Functions, Logic Apps, App Services, Service Bus, Key Vault, CI/CD, Git, Splunk, Dynatrace, Azure Monitor, Application Insights, MuleSoft Anypoint Monitoring, MUnit, OAuth 2.0, OpenID Connect, JWT
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2w
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z/OS Connect API Engineer
Chicago or Atlanta or Dallas or New Jersey or Nashville
$73k-$174k/yr OnsiteFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Global leader in consulting, digital transformation, and engineering services.
Experienced engineer skilled in IBM z/OS Connect, REST APIs, OpenAPI, CICS, COBOL, DB2, enterprise security, CI/CD, GitHub, and Gradle; able to modernize mainframe services.
IBM z/OS Connect Enterprise Edition, REST, OpenAPI, Swagger, YAML, JWT, OAuth 2.0, OpenID Connect (OIDC), RACF, GitHub Actions, Gradle, CICS, COBOL, DB2, GitHub, Git, JSON, XML, Java, Spring Boot
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5d
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Sr External Web Application & API Security Engineer
Chicago, Illinois, United States
$138k-$173k/yr OnsiteFull Time
McDonald's
McDonald'sNYSE: MCD: Global leader in fast food and quick service restaurants.
5+ YOEBachelor's degree or equivalent experience; 5+ years security engineering, including 3+ years hands-on API security. Requires WAF/API platforms, cloud, security telemetry, scripting, and SIEM/SOAR integrations.
REST, GraphQL, SOAP, gRPC, HTTP, TLS, JSON, OAuth 2.0, OpenID Connect, JWT, AWS, Microsoft Azure, Google Cloud Platform, Terraform, Akamai API Security, Akamai App & API Protector, OpenAPI, SIEM, SOAR, CI/CD, DevSecOps, WAF
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6d
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Transformation Senior Process Engineer- API
North Chicago, Illinois, United States
$97k-$184k/yr OnsiteFull Time
AbbVie
AbbVieNYSE: ABBV: Global biopharmaceutical discovering and delivering innovative medicines.
6+ YOEBachelor's degree in engineering or science desired, or equivalent technical experience; 6+ years of engineering or operations experience desired. Requires technical, financial control, risk management, and project leadership competence.
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4w
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Senior Manager, API and Middleware Engineering
Chicago, Illinois, United States
$170k-$182k/yr OnsiteFull Time
Heidrick & Struggles
Heidrick & Struggles: Privately held global executive search and leadership advisory firm serving organizations with senior talent, consulting, and on-demand expertise.
8+ YOEBachelor's degree and 8+ years experience designing and leading enterprise API, middleware, and integration platforms with MuleSoft; strong vendor management, production support, API governance, and cross-team collaboration skills.
MuleSoft Anypoint Platform, Salesforce, CI/CD, DevOps
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1w
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Lead Software Engineer, API Integrations
Chicago, Illinois, United States
$150k-$170k/yr HybridFull Time
CIBC
CIBCTSX, NYSE: CM: A leading North American financial institution.
7+ YOERequires 7–10+ years designing, developing, implementing, and supporting applications, with expertise across .NET, C#, APIs, databases, Azure cloud, integrations, security, and enterprise architecture.
Microsoft .NET Framework, Microsoft .NET Core, C#, ASP.NET Core, Web API, JSON, Entity Framework, React, HTML5, CSS, JavaScript, jQuery, AJAX, VB.NET, SQL, PL/SQL, TypeScript, Python, Java, Node.js, ASP.NET, Web Forms, MVC, LINQ, SQL MI, SQL Server, SSIS, Databricks, Azure Data Factory, JIRA, GitHub, Jenkins, Azure DevOps, ASP.NET Core Identity, Entra ID, OAuth, OpenID, Microsoft Azure, Azure App Services, Azure Functions, Azure Storage, Azure Key Vault, Azure Monitor, Application Insights, Azure AD, Fenergo CLM, Salesforce CRM
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2mo
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Senior Software Engineer (Hogan API)
Hopkins or Atlanta or Chicago or Charlotte or Englewood or Brookfield or Irving
$120k-$141k/yr HybridFull Time
U.S. Bank
U.S. BankNew York Stock Exchange: USB: Diversified financial services and banking institution.
5+ YOEBachelor's degree or equivalent and 5+ years relevant experience. Experience with mainframe/Hogan development (COBOL, JCL, CICS), APIs, system design, testing, security, and cross-team collaboration; Scrum familiarity.
Hogan COBOL, JCL, CICS, JSON, Splunk, IMS Database, GitLab, IDz/RDz (IBM Developer for zOS), Jira
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2mo
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Senior Software Engineer - Customer Integrations (API)
United States or New York City or Dallas or Austin or Houston or Chicago or Nashville or Miami or Atlanta
$140k-$160k/yr RemoteFull Time
TheGuarantors
TheGuarantors: Fintech providing insurance-backed lease guarantees and renters insurance to renters and multifamily operators.
3+ YOE3+ years building backend services with Go/Java/Python/C#; strong API design, SQL/PostgreSQL, cloud (AWS/Azure/GCP/OCI) and Terraform experience; professional software engineering experience and strong communication/system design skills.
Go, Java, Python, C#, SQL, PostgreSQL, AWS, Azure, GCP, OCI, Terraform
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4d
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Distinguished Engineer
Chicago, Illinois, United States
$255k-$382k/yr HybridFull Time
Elevance Health
Elevance HealthNYSE: ELV: A health dedicated to improving lives and communities.
15+ YOEBachelor's degree in IT, computer science, engineering, or related field and 15+ years in software engineering. Requires distributed systems, large-scale architecture, Python or Java, APIs, microservices, cloud, CI/CD, and DevOps.
Python, Java, APIs, microservices, cloud, CI/CD, DevOps, distributed systems, large language models (LLMs)
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2w
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Solutions Engineer
Atlanta or Washington, D.C. or Chicago or Phoenix or Seattle or Boston or Detroit
$180k-$280k/yr FieldFull Time
Bilt Rewards
Bilt Rewards: Fintech membership and payments platform helping renters and homeowners earn rewards on housing and neighborhood spending.
5+ YOERequires 5+ years in solutions engineering or related roles, API and SFTP integration expertise, implementation ownership, strong technical and commercial communication, willingness to travel up to 100%, and a bachelor's degree or equivalent experience.
SFTP, API, Yardi, RealPage, Entrata, MRI, SQL, Python, Java, ETL
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Senior Solutions Engineer
Chicago or New York or United States or Canada
RemoteFull Time
Zero Hash
Zero Hash: Private U.S. fintech infrastructure provider helping banks, brokerages, and fintechs embed crypto, stablecoin, and tokenization services.
3+ YOE3+ years in solutions/sales/technical engineering supporting brokerage or trading infrastructure; experience with FIX, REST/APIs, SQL and a scripting language (Python/JavaScript/Go); strong communication and troubleshooting skills.
APIs, FIX, REST, SQL, Python, JavaScript, Go
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1mo
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GTM AI Engineer
Austin or Chicago or New York City or Salt Lake City or San Francisco or United States
$115k-$175k/yr RemoteFull Time
Gong
Gong: AI OS for Revenue Teams
Background in software/data engineering or applied AI, experience shipping AI/LLM tools to production, systems thinking, API and workflow integration experience, strong independent delivery and stakeholder partnership skills.
Gong, Salesforce, APIs, agent frameworks, workflow orchestration, LLM
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1d
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Staff Technology Engineer-Databricks (Remote/Hybrid)
Bloomington or Dunwoody or Richardson or Tempe
$167k-$306k/yr HybridFull Time
State Farm
State Farm: Provider of auto, home, life, and property insurance services.
Advanced data engineering, architecture, software engineering, Databricks, Python, SQL, cloud services, distributed processing, APIs, testing, CI/CD, infrastructure automation, and technical leadership experience.
Python, SQL, Databricks, APIs, CI/CD
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1w
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Sr. Software Engineer II, Platform/API
Chicago or California or Colorado or Florida or Georgia or Illinois or Indiana or Minnesota or Missouri or Montana or New Jersey or New York or North Carolina or Ohio or Oregon or Pennsylvania or South Carolina or Texas or Utah or Vermont or Virginia or Washington or Wisconsin or country_code
$140k-$190k/yr HybridFull Time
NinjaTrader
NinjaTrader: Privately held futures trading platform and brokerage serving retail and professional futures traders.
6+ YOE6+ years building and operating backend services; Node.js, TypeScript, SQL, Docker, Kubernetes, cloud, event-driven architecture, and workflow reliability expertise. Bachelor's or master's degree or equivalent experience.
Node.js, TypeScript, Kafka, Google Cloud Pub/Sub, SQL, Docker, Kubernetes, Google Cloud Platform, Codex, Cursor, Claude Code, Statsig
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1w
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Implementation Engineer
Chicago, Illinois, United States
$130k-$175k/yr HybridFull Time
Adyen
AdyenEuronext Amsterdam: ADYEN: Global financial technology platform for payments and financial services.
4+ YOERequires 4+ years integrating or consulting on Web APIs, experience with distributed systems, database design, and systems architecture, plus strong communication, technical problem-solving, and project delivery skills.
Web APIs, APIs, SDKs, RSUs
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3w
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SOAR Engineer
Illinois, United States
$95k-$105k/yr OnsiteFull Time
MSM Technology
MSM Technology: Woman-owned 8(a), HUBZone IT contractor providing infrastructure, cybersecurity, data, and software services to federal agencies.
Requires a secret clearance, high school diploma or GED, DoD 8570/8140 IAT Level II certification, government experience, SOAR playbook development, Python, APIs, and security automation experience.
Tines, Palo Alto XSOAR, Splunk Phantom, Swimlane, Python, APIs, Linux, Docker, Kubernetes, Podman, Elastic Stack, Splunk, CI/CD, Infrastructure as Code (IaC), Configuration as Code (CaC), Ansible
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