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576 rest api jobs at 327 companies in Fairfield, CT

3d
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API Consultant
United States or London or New York City or Berlin or Tokyo or Hamburg
HybridFull Time
Statista
Statista: Global business data platform providing statistics and market insights.
Pre-sales or technical consulting experience with APIs, strong presentation and demo skills, hands-on building of agents/workflows, familiarity with REST APIs/JSON and authentication methods, strong communication and analytical skills.
REST APIs, JSON, OAuth, API keys, MCP, Langdock
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5d
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Sr Java API Developer - New York
New York, New York, United States
$40k-$140k/yr OnsiteFull Time
Photon: A technology employer building secure, scalable, and maintainable backend and API solutions.
5+ YOE5+ years Java backend experience, proficiency with Java 11/17, Spring ecosystem, RESTful APIs, relational and NoSQL databases, API security, CI/CD, and testing frameworks.
Java 11, Java 17, Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Hibernate, REST, OpenAPI/Swagger, JSON, GraphQL, PostgreSQL, MySQL, Oracle, MongoDB, Cassandra, Apache Kafka, RabbitMQ, Maven, Gradle, JUnit, Mockito, REST Assured, Jenkins, GitHub Actions, GitLab CI, Microsoft Azure DevOps, Docker, Kubernetes, Git, Redis, Hazelcast, Prometheus, Grafana, ELK Stack, Splunk
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3mo
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Integrations Support Engineer 5 - Ads Conversion API
New York or Los Gatos
$270k-$410k/yr OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Global video streaming and media production service.
Experience with ad tech, Conversions API, data integrations, SQL, Python/Java, REST APIs, and partner-facing support.
SQL, Python, Java, REST API, Postman, curl, Cloud Computing
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2mo
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Senior API Integration Quality Engineer – Healthcare
Bloomfield or Franklin
$53k-$93k/yr OnsiteFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
5+ YOE5+ years in end-to-end or integration quality engineering; strong API testing; HL7 FHIR expertise; Jira; Agile/SAFe; REST APIs in complex integrations.
Postman, Jira, Playwright, CI/CD
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2w
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API Developer/Data Engineer Managing Consultant-Fraud/AI
McLean or New York City or Arlington or United States
$130k-$216k/yr HybridFull Time
Guidehouse
Guidehouse: Provides management and technology consulting services to diverse organizations.
5+ YOEUS citizen able to obtain Public Trust,5+ years in data engineering/integration, proficiency in Python, Java/JS, .NET (C#), RESTful APIs, XML, SQL/SQL Server, GCP, data formats (JSON, Parquet), and experience leading technical teams.
Python, Java, JS, C#, .NET, RESTful API, XML, SQL Server, SQL, CSV, TXT, JSON, Parquet, GCP, Apigee, Kong, Azure API Management, AWS API Gateway, LexisNexis, Oracle Mantas, Actimize, Fircosoft, Oracle Mantas, World-Check, Dow Jones, Chainalysis, Elliptic, TRM Labs
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2mo
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Senior Software Engineer | API
New York, New York, United States
$140k-$220k/yr HybridFull Time
DeepL
DeepL: AI-powered language translation and writing assistance platform.
Backend/API engineering focus with REST, distributed systems, and developer experience.
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3mo
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Senior Lead Software Engineer - API Specialist
Jersey City, New Jersey, United States
$171k-$260k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
6+ YOE6+ years software engineering; API security, API management; REST; Core Java/Spring; cloud (AWS); SQL/NoSQL; strong collaboration and communication.
Java, J2EE, Spring, Spring Boot, Spring Cloud, OAuth 2.0, JWT, JWS, JWE, OPA, ForgeRock, Okta, OIDC, SAML, Kong, Apigee, MuleSoft, AWS API Gateway, Azure API Management, WSO2, REST, SQL, NoSQL, MySQL, Postgres, Oracle, DynamoDB, MongoDB, SONAR, Checkstyle, PMD, Terraform, CloudFormation, AWS EC2, AWS Lambda, AWS KMS, AWS ECS, AWS EKS, AWS S3, SQS, EventBridge, PostgreSQL
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1mo
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Platform Engineer- GraphQL/API
Dublin or San Jose or New York City or Shanghai
HybridFull Time
eBay
eBayNASDAQ: EBAY: Global online marketplace for buying and selling diverse products.
3+ YOE3+ years software engineering experience; strong Java and Spring Boot skills; GraphQL and API design experience; CI/CD (Maven/Jenkins); Kubernetes and cloud-native deployments; focus on reliability, scalability, and developer experience.
Java, Spring Boot, GraphQL, REST, CI/CD, Maven, Jenkins, Kubernetes
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4w
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Senior Backend Engineer (Python/API) - Hybrid NYC- Blueflame AI
New York City, New York, United States
$141k-$248k/yr HybridFull Time
Datasite
Datasite: SaaS platform for managing mergers, acquisitions, and strategic projects.
8+ YOE8+ years professional software engineering experience, expert Python, production REST API design, system architecture and distributed systems experience, MongoDB and Redis, NYC-based or willing to relocate, able to work hybrid 3 days/week.
Python, MongoDB, Redis, RESTful APIs, LLMs
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2mo
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Payer Integrations Engineer
United States or New York City
RemoteAll Commitments Available
Stedi
Stedi: Programmable healthcare clearinghouse for EDI and API transaction processing.
API integration experience; REST/SOAP; multi-threaded, organized; customer-facing; systems mindset; proactive.
REST, SOAP, API integrations, Backend systems
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3mo
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AI Platform Engineer - Vice President
New York, New York, United States
$150k-$210k/yr OnsiteFull Time
Morgan Stanley
Morgan StanleyNYSE: MS: Global financial services firm providing investment and wealth management.
10+ YOE10+ years software engineering; Bachelor's/Master's in Computer Science or equivalent; hands-on with Kubernetes/OpenShift, cloud (AWS/Azure/GCP), Python (Flask/FAST Api), Terraform, REST APIs, data engineering, CI/CD (Jenkins), GitOps, and Generative AI.
Kubernetes, OpenShift, Python, Flask, FAST Api, API, REST, Terraform, Azure, AWS, GCP, SQL, NoSQL, Big Data, Kafka, Redis, Jenkins, GitOps, GPT, Llama, Hugging Face, Langchain, Lang Chain, Lang Graph, Open Telemetry, Grafana, Loki, Prometheus, Cortex, ModelOps, ML Ops, LLM Op
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2mo
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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
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1w
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Implementation Engineer - ERP Integrations
New York or Sao Paulo or Cali or Bogota or Porto Alegre or Joinville
RemoteFull Time
Canals
Canals: AI-powered automation platform for industrial supply chain distributors.
2+ YOE2+ years in technical implementations or integrations at a SaaS company; experience with APIs/REST/JSON and ERPs (Eclipse, P21, Infor, SAP, Acumatica); strong communication and project management skills.
Eclipse, P21, Infor, SAP, Acumatica, API, REST, JSON, Zendesk
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1mo
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Customer Integration Engineer
New York, New York, United States
$110k-$160k/yr HybridFull Time
Hello Patient
Hello Patient: Conversational AI platform automating patient communication and scheduling.
5+ YOE5+ years building production integrations or data pipelines; strong Python and API (REST/SOAP) experience; familiarity with webhooks, OAuth/JWT; excellent client-facing communication and independent ownership.
Python, APIs, REST, SOAP, webhooks, OAuth, JWT, FHIR, HL7, EHR, AWS, GCP, Azure, Docker, AI
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1mo
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Ivalua Technical Lead
Houston or Milwaukee or Dallas or Columbus or Cincinnati or New York City or Austin or Cleveland or Oklahoma City or Albany or Chicago or St. Petersburg or Hartford or St. Louis or Sacramento or Raleigh or Minneapolis or Mountain View or Denver or Boston or Philadelphia or Des Moines or Overland Park or Walnut Creek or Charlotte or Seattle or Carmel or Atlanta or Arlington or Bentonville or Nashville
$63k-$219k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
5+ YOE5+ Mgmt5+ years leading Ivalua technical implementation teams, 3+ years building REST/SOAP API integrations, Ivalua certified, knowledge of SAP/PeopleSoft/Deltek, bachelor’s degree or equivalent.
Ivalua, REST, SOAP, SAP, PeopleSoft, Deltek, API
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1w
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Partner Operations Specialist
United States or Canada or Seattle or Québec or New York
RemoteFull Time
Archera
Archera: Optimizing cloud infrastructure costs through automated management and insurance.
4+ YOE4+ years technical operations or FinOps experience, 3+ years with AWS/Azure/GCP, API/REST experience, Jira use, familiarity with LLM tools; cloud practitioner certification is a plus.
AWS, Microsoft Azure, GCP, API, REST, Jira, Claude
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1mo
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Principal Solution Architect - US Enterprise, Amazon Shipping
Bellevue or New York or Santa Monica
$183k-$272k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
10+ YOEBachelor's in CS/Engineering/Mathematics, 10+ years enterprise-scale technology experience in logistics/shipping/supply chain, expertise in API/REST/cXML/EDI integrations, strong executive communication and technical discovery skills.
APIs, REST, cXML, EDI, TMS, WMS, ERP, OMS
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1mo
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Technical Account Manager (all genders)
New York or Hamburg
$150k-$170k/yr RemoteFull Time
About You: An enterprise commerce platform enabling brands and retailers to realize direct-to-consumer ambitions.
5+ YOE5+ years in enterprise e‑commerce/SaaS or digital consulting; technical customer-facing experience; knowledge of e‑commerce architectures, REST/GraphQL/webhooks, APIs and integrations; degree in CS/IS/Engineering or equivalent experience.
REST, GraphQL, webhooks, APIs, OMS, PIM, CMS, ERP, Microservices, API-first, Cloud-native, Salesforce Commerce Cloud, CommerceTools, SAP Commerce Cloud (Hybris), Shopify Plus, SCAYLE, MACH
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1w
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Senior XRM Developer
New York City, New York, United States
$77k-$139k/yr OnsiteFull Time
City of New York
City of New York: Provides municipal services and administration for New York City.
4+ YOE5+ years Dynamics CRM development, Azure integration, Web API/REST/SOAP, Power Platform, C#/JavaScript/TypeScript, SQL; baccalaureate in CS/engineering or equivalent experience; strong communication and analytic skills.
Microsoft Dynamics CRM, Azure Integration Services, Web API, REST, SOAP, Microsoft Power Platform, Power Apps, Power Automate, Microsoft Dataverse, C#, JavaScript, TypeScript, HTML, CSS, SQL
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15h
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Java Backend Developer
New York, New York, United States
OnsiteFull Time
Infosys
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Experience in Core Java, Spring Boot, microservices, REST API design, strong SQL knowledge, and software development lifecycle participation.
Java, Spring Boot, Struts, Microservices, MySQL, Oracle, PostgreSQL, SQL Server, REST
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