326 rest api jobs at 177 companies in Illinois

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
1mo
Save
Mark Applied
Hide
Director, API & Integrations
Chicago, Illinois, United States
$175k-$205k/yr HybridFull Time
Euromonitor International
Euromonitor International: Provides strategic market research and global business intelligence services.
Proven API/product ownership; technical fluency with REST/GraphQL, OAuth 2.1, SAML/OIDC, webhooks, SDKs and cloud platforms; AI/agent ecosystem familiarity; experience in governance, commercialisation and stakeholder communication.
REST, GraphQL, OAuth 2.1, SAML, OIDC, webhooks, SDKs, AWS, Azure, GCP, Model Context Protocol (MCP), Microsoft Copilot, Claude, ChatGPT, Gemini
1mo
Save
Mark Applied
Hide
API Postman Tester - 6237166
Arlington or Cleveland or California or Colorado or District of Columbia or Illinois or Minnesota or Maryland or Massachusetts or New York or New Jersey or Washington
$70-$80/hr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
5+ YOE5+ years hands-on Postman experience, API test automation (Postman scripting/Newman), strong API/JSON/REST knowledge, Swagger/OpenAPI familiarity, banking domain experience, and strong analytical and communication skills.
Postman, Newman, Swagger/OpenAPI, JSON
3d
Save
Mark Applied
Hide
Lead API Support Engineer - 69420501
Blaine or Atlanta or Chicago
$112k-$132k/yr HybridFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
Extensive hands-on GCP and Apigee experience, strong API security and integration knowledge, experience with REST APIs, CI/CD and developer portals, excellent communication and problem-solving skills.
Google Cloud Platform (GCP), Apigee Edge, Apigee X, Apigee Hybrid, Apigee Developer Portal, CI/CD
1mo
Save
Mark Applied
Hide
Third Party API - Technical Lead
Hartford or Columbus or Charlotte or Chicago
$135k-$203k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides business and personal insurance, group benefits, and investments.
8+ YOE8+ years software engineering/integration/API experience, 3+ years as a technical lead/product owner, RESTful API design, API gateways and security (OAuth, JWT, mTLS), cloud (AWS preferred), SAFe Agile, AI familiarity, strong communication, US work authorization required.
API gateways, OAuth, JWT, mTLS, AWS, SAFe Agile, AI
1d
Save
Mark Applied
Hide
Senior API Integration Developer
Bloomington, Illinois, United States
$113k-$156k/yr HybridFull Time
COUNTRY Financial
COUNTRY Financial: Provides 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
2mo
Save
Mark Applied
Hide
Sr. Manager, Software Engineering - API
Florida or Texas or Illinois or New York or New Jersey or Alabama or Arizona or Arkansas or Colorado or Connecticut or Delaware or Georgia or Indiana or Kansas or Massachusetts or Missouri or North Carolina or Tennessee or Utah or Wisconsin
$174k-$189k/yr RemoteFull Time
TradeStation
TradeStation: Provider of online brokerage services and trading technology.
7+ YOE7+ MgmtLead API platform strategy, manage teams, design API governance, and drive cloud-native infrastructure—REST/GraphQL/gRPC with AWS/Kubernetes.
REST, GraphQL, gRPC, MCP, Kong, Apigee, AWS API Gateway, AWS, Kubernetes, OpenAPI/Swagger, Protocol Buffers, OAuth 2.0, JWT, mTLS, Istio, Linkerd, Terraform, CI/CD
3mo
Save
Mark Applied
Hide
Senior Associate, Software Application and API Developer (St. Charles, Illinois) (St. Charles, IL, US)
St. Charles, Illinois, United States
$153k-$212k/yr HybridFull Time
New York Life
New York Life: Provides life insurance, retirement income, and investment solutions.
7+ YOEBachelor's degree in CS/EE/Math or related field plus 7 years in software development; experience with .NET, REST/SOAP APIs, microservices; VB.NET, ASP.NET, C#, JavaScript, SQL Server; Excel/VBA actuarial models; hybrid work in St. Charles, IL.
VB.NET, ASP.NET, C#, JavaScript, XML, HTML, CSS, REST, SOAP, Swagger, Postman, SOAP UI, SQL Server, .NET
1mo
Save
Mark Applied
Hide
Lead Backend Engineer (API Architect)
Rock Island, Illinois, United States
OnsiteFull Time
CMB Regional Centers
CMB Regional Centers: Managing EB-5 investment funds for US infrastructure projects.
8+ YOERequires degree in Computer Science (or equivalent) and 8+ years software development experience; strong .NET and SQL Server skills, REST API design, API/security practices, CI/CD, testing, and stakeholder communication.
.NET, SQL Server, REST, SSRS, Power BI, CI/CD
1mo
Save
Mark Applied
Hide
Software Engineer, API
Chicago, Illinois, United States
$108k-$110k/yr HybridFull Time
Supernova Technology
Supernova Technology: Provides cloud-based digital software for securities-based lending.
3+ YOEBachelor's in CS/Engineering, 3+ years software development with API design, experience with Java, Spring Boot, AWS, OAuth/JWT, REST, Git, CI/CD, and testing frameworks.
RESTful Services, OAuth, JWT, Java, Spring Boot, AWS, Git, CI/CD
2w
Save
Mark Applied
Hide
API Product Manager
Itasca or United States
$150k-$180k/yr RemoteFull Time
Accertify
Accertify: Provide digital fraud prevention and identity protection software solutions.
5+ YOE5+ years product management experience (fraud, identity, payments, or SaaS); knowledge of RESTful APIs and OAuth/SAML; vendor and data provider management; developer experience and partner integrations.
RESTful APIs, OAuth, SAML, Shopify, Salesforce, Ping Identity
5d
Save
Mark Applied
Hide
Senior Software Engineer (API Management)
Chicago or Peoria
$113k-$183k/yr OnsiteFull Time
Caterpillar
CaterpillarNYSE: CAT: Manufactures construction equipment, mining machinery, and industrial engines.
Experience designing and operating API platforms with Apigee and GCP, REST/OpenAPI practices, OAuth2/JWT security, Terraform IaC, and software integration across the SDLC.
Apigee, Apigee Edge, Apigee X, OpenAPI, Swagger, Spectral, OWASP, GCP, VPC, DNS, Terraform, IaC, Cloud Armor, WAF, OAuth2, JWT, JavaScript
2mo
Save
Mark Applied
Hide
Senior Software Engineer, Zaidyn
Chicago or New York or Princeton
HybridFull Time
ZS
ZS: Global management consulting and technology firm for healthcare and life sciences.
3+ YOEBachelor’s or Master’s in CS/EE/math or related; 3-5 years software product development; full-stack SaaS experience; strong APIs, SOA/REST; English fluency.
Java, REST, SOA, Jenkins, Hibernate, Maven, TeamCity, APIs, OOP, DI/IoC, AWS
2w
Save
Mark Applied
Hide
Senior Solutions Engineer
Chicago or New York or United States or Canada
RemoteFull Time
Zero Hash
Zero Hash: Infrastructure platform for crypto, stablecoins, and tokenized assets.
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
3w
Save
Mark Applied
Hide
Senior Integration Engineer
Chicago, Illinois, United States
OnsiteFull Time
Paul Hastings
Paul Hastings: International law firm providing legal and regulatory consulting services.
7+ YOE7+ years in application development or integration engineering; expert Workato or iPaaS experience, APIs (REST/SOAP/GraphQL), webhooks, SQL, JavaScript/Python, OAuth, JSON/XML; Bachelor's in CS/IS or equivalent; strong communication and leadership.
Workato, iPaaS, APIs, REST, SOAP, GraphQL, webhooks, OAuth, JSON, XML, SQL, JavaScript, Python, SDKs, Workato formulas, Jira
1mo
Save
Mark Applied
Hide
Lead Software Engineer
Chicago, Illinois, United States
$154k-$164k/yr HybridFull Time
Alliant Credit Union
Alliant Credit Union: Provides digital banking, consumer loans, and mortgage lending services.
8+ YOEBachelor's in IT/CS or related, 8 years related experience, strong C#, .NET (Framework/Core), MVC, Azure DevOps, REST/Web API, Entity Framework Core, Symitar/Episys experience, Splunk/Log Insight/Grafana familiarity.
C#, Microsoft .NET Framework, .NET Core, MVC, Microsoft Azure DevOps, REST, Web API, Entity Framework Core, Symitar API (SymXchange / SymConnect), Episys, PowerOn, RepGen, Splunk, Log Insight, Grafana
1mo
Save
Mark Applied
Hide
Integrations Software Engineer
Ghent or London or Chicago
HybridFull Time
Qargo
Qargo: Cloud-based transport management platform for logistics and freight operations.
2+ YOE2+ years software engineering or systems integration experience; strong API knowledge (REST, GraphQL), data formats (JSON, XML); experience with Python, Django, GraphQL, K8s, React/React Native, Google Cloud; strong communication and stakeholder management.
APIs, REST, GraphQL, JSON, XML, Python, Django, K8s, React, React Native, Google Cloud
3mo
Save
Mark Applied
Hide
Python Developer IV
Webster or Chicago or St Petersburg or Phoenix or Tempe
$111k-$175k/yr HybridFull Time
Paychex
PaychexNASDAQ: PAYX: Provider of integrated payroll, HR, and benefits outsourcing solutions.
5+ YOE5+ years backend software development; Python/Django; AWS; REST APIs; PostgreSQL/MySQL; Docker; CI/CD.
Python, Django, REST, Celery, Redis, AWS, EC2, S3, RDS, Lambda, CloudWatch, PostgreSQL, MySQL, Docker, Kubernetes, Jenkins, GitHub Actions
3mo
Save
Mark Applied
Hide
IT Systems Integration Developer
Chicago or Lincolnshire
$92k-$141k/yr HybridFull Time
Camping World
Camping WorldNYSE: CWH: Retailer of recreational vehicles, camping gear, and maintenance services.
5+ YOE5-10 years software development; strong backend focus; REST/SOAP APIs; SQL Server/Oracle; Git; .NET Core/C#/Java/JavaScript/PHP; APIs; Agile/Waterfall.
.NET Core, C#, JAVA, JavaScript, PHP, REST, SOAP, SQL Server, Oracle, Git, Visual Studio, NestJS, Symfony, ReactJS, Angular, Docker, Kubernetes, Jenkins, CI/CD, Confluence, Jira
2d
Save
Mark Applied
Hide
Team Solutions Engineer - Enterprise
Downers Grove or Frisco
$84k-$152k/yr OnsiteFull Time
T-Mobile
T-MobileNASDAQ: TMUS: Provides wireless network services and mobile communication devices.
2+ YOEHigh school diploma required; 2+ years telecom/IT or API integration experience; hands-on REST API and Postman experience; strong technical presentation and communication skills; STEM bachelor\u0002s preferred.
REST API, Postman
1mo
Save
Mark Applied
Hide
Sr Software Engineer (Hybrid) Bolingbrook, IL
Bolingbrook, Illinois, United States
$117k-$133k/yr HybridFull Time
S&S Activewear
S&S Activewear: Wholesale distributor of blank apparel and accessories.
5+ YOE5+ years with C#/.NET; UI frameworks; REST APIs; SQL; cloud deployments (Azure/AWS); strong problem-solving and communication.
C#, .NET, JavaScript, SQL, Azure, AWS, REST, Blazor, React, Angular, Vue, CSS