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341 api developer integration engineer jobs at 245 companies in Fairfield, CT

1mo
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Senior Integration Engineer
New York or Denver or United States or Europe
$125k-$160k/yr HybridFull Time
Gen II Fund Services
Gen II Fund Services: Provides fund administration services to private capital asset managers
5+ YOE5+ years integration engineering; deep Azure Function Apps, Logic Apps Standard, Azure Service Bus, and API/Service Bus configuration; strong C#; CI/CD, IaC (Bicep), Snowflake desirable; active use of AI-assisted development; bachelor's degree required.
Azure Function Apps, Logic Apps Standard, Azure API Management, APIM, Azure Service Bus, Bicep, C#, Snowflake, LLMs, codegen, Claude, CI/CD, IaC, WDL
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1mo
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Integration Engineer
New York, New York, United States
OnsiteFull Time
Polymarket
Polymarket: A decentralized platform for trading on real-world event outcomes.
Hands-on experience integrating/debugging trading or exchange APIs (REST, WebSocket); strong Python; ability to read Rust/TypeScript; track record owning partner technical relationships; solid electronic trading fundamentals.
CLOB, REST, WebSocket, RFQ gateway, Python, TypeScript, Rust
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3w
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Senior Integration Engineer
United States or San Mateo or New York
$120k-$163k/yr RemoteFull Time
Meadow
Meadow: Modern student financial services for higher education institutions.
5+ YOE5+ years in system integration or SaaS implementation; advanced SQL, PowerShell/Bash, DNS, networking, SFTP; API and SIS familiarity; project management and client-facing communication skills.
SQL, PowerShell, Bash, DNS, SFTP, Ellucian Ethos, Banner, Colleague, Empower, Jenzabar, PowerCampus
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3w
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Senior Integration Engineer - Tokenization
United States or Los Angeles or Seattle or San Francisco or New York City
$113k-$153k/yr RemoteFull Time
Marqeta
MarqetaNASDAQ: MQ: Providing cloud-based card issuing and payment processing infrastructure.
5+ YOE5+ years advising enterprise customers on technical integrations, strong API knowledge, experience with Postman or Bruno, SQL and Datadog a plus, bachelor’s degree preferred.
Bruno, Postman, SQL, Datadog
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1mo
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Senior Integration Engineer
New York or Denver
$125k-$160k/yr HybridFull Time
Gen II Fund Services
Gen II Fund Services: Global fund administration for private capital asset managers.
5+ YOE5+ years integration engineering experience with Azure Function Apps, Logic Apps, Service Bus, API Management, strong C# skills, AI-assisted development experience, CI/CD and IaC (Bicep); Bachelor's degree or equivalent.
Azure Function Apps, Logic Apps Standard, Azure API Management (APIM), Azure Service Bus, Bicep, C#, Snowflake, LLMs, Claude, codegen, IaC, CI/CD, WDL
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2mo
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Senior Windchill Integration Engineer
New York City or United States
RemoteFull Time
ChapsVision
ChapsVision: Provides enterprise AI-powered data intelligence and search platforms.
7+ YOE7+ years software engineering experience, 2+ years Windchill development or integration, strong Java and .NET Core skills, Windchill APIs and object model expertise, REST/distributed systems knowledge, experience with Azure and/or AWS, strong communication.
Windchill, Java, .NET, .NET Core, REST APIs, Azure, AWS, Teamcenter, 3DEXPERIENCE, Aras Innovator, Agile PLM, Docker, Kubernetes, ArgonOS, Sinequa, Chaps Agents
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1w
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Integration Engineer
New York, New York, United States
$134k-$200k/yr OnsiteFull Time
Harvey
Harvey: AI platform for legal research and document analysis.
3+ YOE3+ years building integrations across enterprise SaaS (Salesforce, NetSuite, Workday, Marketo, Snowflake); experience with APIs, iPaaS, scripting, data transformations, error handling, and stakeholder communication.
Salesforce, CPQ, NetSuite, Workday, Marketo, Snowflake, iPaaS, Workato, REST, SOAP, GraphQL, OAuth, SAML, SCIM, Python, JavaScript, Ashby
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3w
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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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3mo
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Systems Integration Engineer
New York City, New York, United States
$160k-$250k/yr OnsiteFull Time
Linero
Linero: AI-native building enterprise infrastructure for secure technology.
4+ YOE4+ years in enterprise integrations or backend with integrations focus; ETL experience; familiarity with ERPs; API design; able to work with enterprise customers; based in NYC or willing to relocate.
REST, GraphQL, Webhooks, EDI, SAP, Oracle, NetSuite
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2mo
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Senior Staff Software Engineer | API
New York or United States
$260k-$350k/yr HybridFull Time
DeepL
DeepL: AI-powered language translation and writing assistance platform.
10+ YOE10+ years in software engineering; experience with high-scale distributed systems and API platform architecture; enterprise integration; strategic communication; AI-native development.
Cloud platforms, Microservices, APIs, Security, Automation tooling
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2mo
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Integration Support Engineer 5 - Ads Aggregation
New York, New York, United States
$270k-$410k/yr OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Provider of global streaming entertainment and video content.
Deep ad-tech experience, proficiency in SQL, Java or Python, REST API debugging, ETL/data integrator knowledge, cloud platform understanding, and strong partner communication and technical translation skills.
SQL, Python, Java, ETL, REST APIs, curl, Postman
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2w
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Senior Python Engineer, Integration
Philadelphia or New York City or Austin or Sofia or Belgrade
RemoteContract
Fliff
Fliff: Operates a social sportsbook platform offering free-to-play gaming.
5+ YOE5+ years Python development experience focused on API and third-party integrations, observability, testing, and on-call production support.
Python, Django, Datadog, CloudWatch, Grafana
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1mo
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Software Engineer, Robotics & Integration
New York City or Israel
$150k-$220k/yr HybridFull Time
eyesAtop
eyesAtop: Provides a unified AI-native operating platform for multi-drone fleets.
3+ YOE3+ years software development with robotics/autonomy or embedded systems, strong skills in Java, C++, Python, Linux, APIs; familiarity with networking, serial protocols, real-time systems, and working close to hardware.
Java, C++, Python, Linux, APIs, STM32, ESP32, Jetson
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2mo
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Integration Support Engineer 5 - Ads Aggregation
New York, New York, United States
$270k-$410k/yr OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Global video streaming and media production service.
Ad tech and data integration experience; SQL, Python or Java; REST APIs; cloud familiarity; technical support and partner liaison experience.
SQL, Python, Java, REST APIs, Postman, curl, Cloud platforms
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4w
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Software Engineer - Customer Integrations (API)
New York, New York, United States
$125k-$145k/yr HybridFull Time
TheGuarantors
TheGuarantors: Provides lease guarantees and security deposit alternatives for rentals.
2+ YOE2+ years building backend services with Go/Java/Python/C#/SQL, strong API design, system design, cloud experience (AWS/Azure/GCP/OCI) and IaC with Terraform; strong communication skills.
Go, Java, Python, C#, SQL, AWS, Azure, GCP, OCI, Terraform
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1mo
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Partner Engineer, Generative AI Integration and Distribution
Menlo Park or Seattle or Burlingame or New York City
$149k-$210k/yr OnsiteFull Time
Meta
MetaNASDAQ: META: Develops social networking platforms and virtual reality technologies.
5+ YOEBachelor's in CS/CE or equivalent, 5+ years in software/AI/ML, development experience in at least one of: Python, Java, Go, Rust, C, C++, experience with LLMs, cloud technologies, APIs, partner integrations, and project management.
Python, Java, Go, Rust, C, C++, LLMs, LLaMA, GPT, Claude, APIs
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4d
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Integrations Engineer
New York, New York, United States
$165k-$175k/yr HybridFull Time
Riskified
RiskifiedNYSE: RSKD: AI-powered fraud prevention and risk intelligence for e-commerce.
4+ YOE4+ years in integrations/solution engineering, US work authorization required, strong API integration experience, SQL proficiency, ability to read logs and source code, client-facing technical project experience.
SQL, APIs, SDKs
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3w
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Senior Software Engineer - Banking Integration Platform
San Francisco or New York City or Portland or United States or Canada
$201k-$251k/yr HybridFull Time
Mercury
Mercury: Banking services and financial software designed for startup companies.
7+ YOE7+ years building and operating backend infrastructure and distributed systems; experience integrating modern systems with legacy banking infrastructure; strong API and reliability focus; Haskell experience or willingness to learn.
Haskell
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1mo
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Integrations Engineer
New York City, New York, United States
$135k-$155k/yr OnsiteFull Time
Coast
Coast: Smart fuel cards and expense management for commercial fleets.
4+ YOE4+ years total experience (≥3 years engineering); strong backend/API design, data modeling, OAuth/API key auth, AWS; experience integrating ERPs/telematics/accounting tools; strong communication and problem-solving.
AWS, Oracle, Samsara, NetSuite, QuickBooks, OAuth, API keys, API
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Senior Software Engineer - Bruin Platform Integration
New York City, New York, United States
$150k-$180k/yr OnsiteFull Time
MetTel
MetTel: Providing managed network, mobility, and cloud communications for enterprises.
7+ YOE7+ years software engineering experience building SDKs or public APIs; strong TypeScript/Node.js skills; experience with OAuth 2.0/OIDC, SAML, OpenAPI, Kubernetes/Docker, CI/CD, cloud platforms, and AI-assisted development tools.
TypeScript, JavaScript, Node.js, .NET, Python, Go, Ruby, Java, OpenAPI, Kubernetes, Docker, CI/CD, AWS, Azure, GCP, Claude Code, Copilot, Cursor, OAuth 2.0, OIDC, SAML, SCIM, webhooks, REST, GraphQL, ServiceNow, Jira, Zendesk, Freshservice, BMC, SNMP, syslog, Meraki, Cisco, Zebra, Model Context Protocol (MCP)
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