26 software integration engineer jobs at 23 companies in Mastic, NY
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Software Engineer I
Grand Rapids or Uniondale or Austin or Atlanta
$100k-$150k/yr HybridFull Time
1+ YOE1+ year software engineering experience; strong skills in Python or JavaScript/TypeScript; familiarity with APIs, integrations, automated testing, debugging; comfortable with AI-assisted development (Claude Code preferred); onsite collaboration required.
Python, JavaScript, TypeScript, Claude Code
1mo
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Sr. Software Engineer (React Native)
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
6+ YOE6+ years software engineering experience; strong JavaScript, Node.js, ReactJS and React Native skills; experience with REST APIs, unit/integration testing, CI/CD, version control, databases; BS in CS or equivalent preferred.
JavaScript, Node.js, ReactJS, React Native, REST APIs, CI/CD
1mo
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Middle Office Software Developer
Norwalk or Rowayton
$115k-$200k/yr OnsiteFull Time
5+ YOEBachelor's in computer science, 5+ years software development in financial services, experience with C#, Windows and web frameworks, SQL Server, messaging/SOA/APIs, Agile and unit/integration testing.
C#, Windows Forms, WPF, ASP.NET MVC, Angular, JavaScript, Web API, SQL Server, MOM, SOA, APIs, Agile, Coding agents and AI-assisted development tools
6d
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Senior Software Developer
Roslyn, New York, United States
$145k-$155k/yr OnsiteFull Time
5+ YOE5+ years experience with Oracle or SQL Server, 2+ years BI/reporting, experience with ETL, Linux scripting, SFTP integrations, JavaScript and programming languages (C#, .Net, Java, Python); bachelor's degree required.
Oracle, SQL Server, Origami Risk, Linux, JavaScript, SAP BusinessObjects, Power BI, Tableau, SFTP, GIT, C#, .Net, Java, Python
1w
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Founding Software Engineer - AI & Operations (Full-Stack)
Wallingford, Connecticut, United States
OnsiteFull Time
3+ YOE3+ years engineering experience with ownership of a production system; strong full‑stack fundamentals, SQL, LLM API production integrations, OCR/document extraction, and self-directed problem solving.
OpenAI, Anthropic, OCR, MaintainX, Claude Code, Copilot, SQL
3d
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Technical Lead - Software Engineering
Shelton, Connecticut, United States
$138k-$173k/yr OnsiteFull Time
5+ YOERequires 5–8 years of software engineering experience, deep React and Next.js expertise, TypeScript, front-end architecture, API integration, technical leadership, and a bachelor's degree or equivalent practical experience.
React, Next.js, TypeScript, Zustand, AEM Content Fragments, Edge Delivery Services, GraphQL, REST, LaunchDarkly, Adobe Target, Quantum Metric, WCAG, ADA, LCP, INP, CLS
1w
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Sr. Software QA Engineer
Shelton, Connecticut, United States
$126k-$130k/yr HybridFull Time
5+ YOEMaster's in computer science or related and 5+ years experience including export/compliance assessment, CAD BOM formats, SAP MRP integration testing, system validation, change control, and Jira-based test traceability.
Altium, SolidWorks, Pro-E, OrCad, MicroStation, SAP MRP, Jira
1mo
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AVP iOS Software Development Engineer III - MySynchrony
Stamford or Chicago or West Chester or Dallas or New York City or Costa Mesa or Charlotte or Alpharetta
$100k-$170k/yr HybridFull Time
4+ YOE4+ years software engineering experience (or HS +6 yrs), strong iOS expertise (Swift/SwiftUI/UIKit), mobile SDK experience, leadership of Agile teams, unit/integration testing, CI/CD familiarity, JSON/REST/XML, mentoring and production support.
SwiftUI, Swift, UIKit, JSON, REST, XML
1mo
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Global Advisory Testing Engineer
Morrisville or Shelton
HybridFull Time
8+ YOEBachelor's in EE/CE/CS or related, 8+ years manufacturing test engineering experience, expertise in hardware/software integration, troubleshooting system-level issues, automation/scripting, and supporting global manufacturing operations.
3w
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ATE Engineer
Hauppauge, New York, United States
$135k-$140k/yr OnsiteFull Time
10+ YOEUS citizen with 10+ years in test system software/hardware development, expertise with NI PXI and LabView, experience with MIL standards, hardware integration, troubleshooting, and CI/CD.
National Instrument PXI, PCI, DAQ, Chassis, LabView, Test Stand, Phyton, FPGA, JTAG, ICE, TCP/IP, Ethernet, UDP, I2C, SPI, RS-232, RS-422, RS-485, ARINC, AFDX, MIL-STD-1553, MIL-STD-810, MIL-STD-461, MIL-STD-1275, RTCA/DO-160, IPC-610, Continuous Integration/Deployment
1mo
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Foundation Proto Operations Engineer - 3rd Shift
Wilton, Connecticut, United States
HybridFull Time
2+ YOEBS in a technical field with 2+ years relevant experience; Master's preferred. Experience operating and troubleshooting test rigs, integration and verification, and ability to work unsupervised. Software engineering is a plus.
1mo
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Oracle FCCS Developer
Stamford, Connecticut, United States
OnsiteContract
8+ YOE8+ years experience implementing and supporting Oracle FCCS/EPM Cloud, integrations with GL/ERP, developing Groovy rules and EPM Automate scripts, and delivering financial consolidation and reporting solutions.
Oracle Financial Consolidation and Close Cloud Service (FCCS), Oracle EPM Cloud, Oracle Financials Cloud, EDM, Data Management, Data Integration, Groovy Rules, EPM Automate, Smart View
3mo
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Sr. Building Automation Engineer
Kings Point or Long Island
OnsiteFull Time
5+ YOEExtensive Building Automation hardware/software knowledge; 5 years Niagara integration; 5 years troubleshooting; federal properties experience; ability to pass background checks;迎
Niagara Framework, Building Automation Systems, HVAC Control Systems
2mo
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Generative AI Lead Engineer
Dallas or Stamford or Chicago
$120k-$140k/yr HybridFull Time
5+ YOEStrong experience in Generative AI, LLMs, prompt engineering; hands-on with .NET, React, Python; experience with RAG architectures, API integrations; Azure cloud; ability to deploy AI-enabled applications.
.NET, React, Python, LangChain, LlamaIndex, Claude, Azure, RAG
4d
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Senior AI Engineer
Greenwich, Connecticut, United States
OnsiteFull Time
Bachelor's degree or equivalent experience; enterprise technology integration, LLMs, generative AI, Python, GCP, APIs, SDLC, Agile, and secure production AI application experience required.
Large Language Models (LLMs), ADK, LangChain, Google Cloud Platform (GCP), Python, Vertex AI, Cloud Run, BigQuery, Retrieval-Augmented Generation (RAG), HRIS, CRM, ERP, APIs, SDLC, Agile
3mo
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SAP BTP (CPI/IS) Developer
Waltham or Brooklyn or Hicksville or Syracuse or Connecticut or New Jersey or New Hampshire or Pennsylvania or Rhode Island or Vermont or Maine
$111k-$158k/yr HybridFull Time
Experience developing SAP BTP/Integration Suite solutions (CPI/IS), strong scripting (Java, Groovy), XML/JSON/OData/SOAP/REST, API security, Git/Jira familiarity; bachelor's in CS/engineering preferred.
SAP BTP Integration Suite, CPI, PIPO, ALE/IDocs, BAPIs, XML, OData, SOAP, REST, Java, Groovy, JSON, Business Application Studio (BAS), SAP HANA Cloud, Git, Jira, SAP ABAP, Eclipse, CDS Views, Fiori, UI5, HTML5, Net weaver web services
1w
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Senior Frontend Developer
Greenwich, Connecticut, United States
HybridFull Time
5+ YOE5+ years commercial SPA development experience; degree in CS or related; strong JavaScript/HTML/CSS skills; experience with Vue/React/Angular, TypeScript, webpack/Vite, API integration, and AI/agentic development tools.
Vue 3, TypeScript, VueJs, Vuex, Pinia, Vite, Cypress, webpack, React.js, Angular.js, Claude Code, JavaScript, HTML, CSS, LESS
5d
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Guidewire Developer, Senior Associate
Chicago or Stamford or Atlanta or Charlotte or Austin or Washington or Columbus or Dallas or Los Angeles or Milwaukee or Denver or Boston or New York or Florham Park or San Francisco or Silicon Valley or Philadelphia or Phoenix or Pittsburgh or Hartford
$77k-$202k/yr OnsiteFull Time
2+ YOEBachelor's degree, minimum 2 years experience, Guidewire platform knowledge, Object Oriented Programming, API integration experience, certifications (Guidewire,Scrum Master) preferred, up to 60% travel.
Guidewire PolicyCenter, Guidewire BillingCenter, Guidewire ClaimCenter, GOSU, PCF, Guidewire Integration Framework, Spring Boot, Rest Client API, SOAP APIs
4d
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Application Developer – Internal Platform
Glen Cove, New York, United States
$125k-$150k/yr HybridFull Time
4+ YOERequires 4+ years building production web applications, strong C#/.NET and SQL Server experience, MVC knowledge, JavaScript framework familiarity, API design, and third-party platform integration experience.
C#, .NET, SQL Server, MVC, React, Vue, Alpine, Angular, Shopify, Galley, ShipStation, ASP.NET Web Forms, ASP.NET MVC, Razor, Microsoft Entra ID, ERP
3w
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Senior Full-Stack & Platform Engineer (Remote)
Bethpage, New York, United States
$155k-$175k/yr RemoteFull Time
7+ YOE7+ years building and owning production web applications; extensive PostgreSQL experience; strong AWS EC2, Linux, Node.js, TypeScript, Python, API integration, and observability/production ops skills.
PostgreSQL, Supabase, AWS EC2, Linux, Node.js, TypeScript, Python, OpenClaw, Everflow, TrustedForm, IPQS, Google APIs, JavaScript, CI/CD
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