59 application integration engineer jobs at 46 companies in Fairfield, CT

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SWIFT Application Integration Engineer
New York, New York, United States
$90k-$135k/yr HybridFull Time
Talan
Talan: Provides international consulting and technology transformation services.
5+ YOE5+ years in hands-on integration, deployment, or production support in banking/critical systems; Linux/Unix with scripting; Oracle SQL; SWIFT or similar systems; middleware (MQ, sFTP); production deployment experience.
Linux, Unix, Bash, Ksh, Oracle, SQL, SWIFT, MQ, sFTP
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Senior Application Engineer I
Washington D.C. or Chicago or New York City or Los Angeles
$133k-$183k/yr HybridFull Time
Kirkland & Ellis
Kirkland & Ellis: Provides legal services for corporate, litigation, and transactional matters.
8+ YOE8+ years in advanced application support/configuration, experience with e-discovery and litigation platforms, APIs/ETL/data integrations, Microsoft SQL, Linux, REST APIs, PowerShell, emerging AI, strong communication and problem-solving.
Relativity Server/One, Reveal, BrainSpace, AI, APIs, REST APIs, ETL, data pipelines, Microsoft SQL, Linux, PowerShell
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Senior Application Security Engineer
New York or Los Angeles or San Francisco
$165k-$190k/yr HybridFull Time
Tatari
Tatari: A platform for buying and measuring TV advertising campaigns.
Production Python experience, significant hands-on application security experience, threat modeling, building security tooling/automation, familiarity with AWS and Kubernetes, and SAST/DAST/SCA/CI-CD integration.
Python, Java, Rust, AWS, Kubernetes, OWASP Top 10, API Security Top 10, ASVS, SPVS, AISVS, SAST, DAST, SCA, CI/CD
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Application Support Engineer
New York, New York, United States
$100k-$150k/yr HybridFull Time
Intenseye
Intenseye: AI-powered computer vision platform for industrial workplace safety
3+ YOE3+ years technical/application support; strong Linux, networking (TCP/IP, DNS, firewalls), SSH and VPN experience; SSO integrations; strong written and oral English; able to work with enterprise IT teams.
Linux, SSH, VPN, TCP/IP, DNS, Sentinel
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Sr. Data & AI Application Engineer (59_2026.2)
New York, New York, United States
$165k-$180k/yr OnsiteFull Time
Affinity Solutions
Affinity Solutions: Provides consumer purchase insights through credit card transaction data analysis.
6+ YOE6+ years building enterprise applications with React/Next.js and Node.js, strong SQL and Python skills, experience with cloud data platforms (Snowflake/BigQuery/Redshift), REST APIs, and ML/AI integrations.
Snowflake, Snowpark, Snowflake Cortex, Streamlit, Python, SQL, ThoughtSpot, Next.js, React, Node.js, AWS Cognito, Claude API, MCP, Slack Bolt, AWS EC2, Bitbucket, JIRA, GenAI tools
1w
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Application Developer for Capital Integrated Data Solutions
Flushing, New York, United States
$95k-$109k/yr OnsiteFull Time
City of New York
City of New York: Provides municipal services and administration for New York City.
4+ YOEDesign, implement, and maintain automation and monitoring solutions; develop and maintain Windows-based applications using Visual Basic, ASP .NET, Access; write and tune SQL procedures; strong Excel/Access and monitoring/tooling experience.
Microsoft Excel, Microsoft Access, MS SQL Server, Visual Basic, ASP .NET, Visual Basic for Applications
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Corporate Vice President - Integration Platform Architect
New York, New York, United States
$148k-$230k/yr HybridFull Time
New York Life Insurance
New York Life Insurance: Providing life insurance, annuities, and long-term investment solutions.
10+ YOE10+ years in application integration/platform architecture; expert MuleSoft Anypoint, iPaaS, Flex Gateway, Agent Fabric; APIs, microservices, event-driven design; cloud (AWS/GCP); security (OAuth, JWT, AWS IAM); containerization (Docker, Kubernetes).
MuleSoft (Anypoint Platform), iPaaS, Flex Gateway, Agent Fabric, LLM, RAG, AWS, GCP, OAuth, JWT, AWS IAM, Docker, Kubernetes, AWS EKS, DevOps, CI/CD
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Deployed Engineer, International
New York City, New York, United States
$106k-$133k/yr FieldFull Time
Persistent Systems
Persistent Systems: Develops and manufactures secure mobile ad hoc networking systems.
3+ YOEBachelor's in EE/CS/IT (or equivalent experience), 3+ years in field/sales engineering or systems integration, strong IP networking/RF/mesh skills, ability to travel internationally 50–70%, and excellent customer engagement and training skills.
Wave Relay®, MANET, C4ISR
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Security Engineer
New York City or San Francisco
$165k-$200k/yr OnsiteFull Time
Merge
Merge: Unified API platform for connecting B2B software integrations.
3+ YOE3+ years security engineering with product/application focus; familiarity with OWASP, threat modeling, secure code review, SAST/DAST/SCA and CI/CD integration; able to read/write code; SaaS/API experience.
OWASP, SAST, DAST, SCA, CI/CD
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Senior Engineer, Internal Projects
New York City, New York, United States
$185k-$235k/yr OnsiteFull Time
Clark
Clark: AI-powered trust infrastructure for audit and accounting firms.
5+ YOE5+ years software engineering experience; experience building internal tools, automation, or AI applications; strong full‑stack/backend fundamentals; experience with LLMs, agents, integrations, and product sense.
LLMs, Slack, CRM, Linear
1w
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BMS Applications Engineer
New York, New York, United States
$90k-$130k/yr OnsiteFull Time
Miller Electric Company
Miller Electric Company: Provides electrical and technology infrastructure construction and maintenance services.
4+ YOEBachelor's in engineering or related field, 4+ years HVAC/controls experience, DDC programming, BACnet and Modbus integration, AutoCAD and Microsoft Office competency, strong communication and organizational skills.
BACnet, Modbus, AutoCAD, Microsoft Word, Microsoft Excel, Microsoft Outlook, Automated Logic WebCTRL, DDC
3w
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Senior Staff Partner Engineer
San Francisco or New York City
$208k-$260k/yr HybridFull Time
Ripple
Ripple: Provides blockchain solutions for global payments and liquidity.
10+ YOE10+ years in software/IT delivery with enterprise clients, strong network/database/application troubleshooting, hands-on software development, customer integration and implementation experience, able to travel 20-30%.
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Forward Deployed Engineer
New York City, New York, United States
$160k-$185k/yr HybridFull Time
HackerRank
HackerRank: Platform for evaluating and hiring developers through skill assessments.
Customer-facing technical lead with full-stack depth to configure, debug, and explain web applications and integrations; experience scripting APIs (Ruby or Python); strong communication and project execution skills.
Ruby, Python, API
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People Analytics AI Engineer
Seattle or San Francisco or New York City or Washington or Bengaluru or United States
$146k-$221k/yr RemoteFull Time
Samsara
SamsaraNYSE: IOT: Connected Operations Cloud platform for physical operations and IoT.
8+ YOEBachelor’s degree or comparable experience; 8+ years building production-grade enterprise applications; hands-on LLM experience; proficiency in Python, SQL/NoSQL, integrations, low-code automation, AWS, and data warehouses.
large language model (LLM), Python, SQL, NoSQL, Workato, UiPath, Zapier, Workday, Google Suite, Slack, Salesforce, ServiceNow, AWS, Databricks, Snowflake, Google BigQuery, Amazon Redshift, Greenhouse, Pave, Lattice, BrightHire, GitHub, Cursor
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Cybersecurity Engineer
Stamford, Connecticut, United States
OnsiteFull Time
Grayscale
Grayscale: Provides digital asset investment products and fund management.
5+ YOE5+ years cybersecurity engineering experience implementing cloud and application security, CI/CD integration, automation with Python/Terraform, threat modeling, and regulatory controls in regulated environments.
Python, Terraform, Kubernetes, SIEM, SOAR, AWS, LLMs
1w
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EUCS Cloud Infrastructure Lead Engineer - VP
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 application development with .NET/C#, deep enterprise SaaS and cloud platform expertise, identity/authentication integrations (OAuth/OIDC/SAML), networking and load-balancing experience, GenAI tool familiarity, leadership and DevOps skills.
.NET, C#, Box, Google Workspace, Qualtrics, Microsoft 365, OAuth, OIDC, SAML, web proxy, load-balancing, GitHub Copilot, Claude Code, GPT, Gemini, Grok, Github, Podman, Kubernetes, Git
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Applications Engineer - Financial Systems
Kansas City or Atlanta or New York or Chicago or Los Angeles or Washington or Birmingham or Boston or Chattanooga or Charleston or Dallas or Denver or Edwardsville or Fort Lauderdale or Fort Worth or Houston or Jefferson City or Miami or Nashville or Park City or Philadelphia or Phoenix or Raleigh or Seattle or San Francisco or Salt Lake City or St. Joseph or St. Louis or Wilmington
$130k-$150k/yr RemoteFull Time
Polsinelli
Polsinelli: Am Law 100 law firm providing comprehensive legal services.
Experience supporting legal finance applications (Elite 3E or similar), strong SQL and BI skills, integrations, and cross-functional collaboration.
Elite 3E, Aderant Expert, Aderant Sierra, Bo​omi, BizTalk, SQL, Power BI, SSRS, Chrome River/Emburse, ClientPay/LawPay, ALP Imaging, Clocktimizer, Xcelerate, e-billing platforms, XML, CSV, APIs
1w
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Lead Architect, Forward Deployed Engineer (Cogentiq)
New York, New York, United States
$185k/yr OnsiteFull Time
Fractal
FractalNSE: FRACTAL: Provides artificial intelligence and data analytics solutions for enterprises.
Experienced software engineer with production backend, cloud-native, enterprise integration, and AI application experience; strong customer-facing and architecture skills.
SAP, Salesforce, Workday, ServiceNow, Microsoft SharePoint, Snowflake, Databricks, Git, Python, Java, TypeScript, Docker, Kubernetes, Azure, AWS, Google Cloud, SQL, REST, GraphQL, OAuth, JWT, SAML, CI/CD, Model Context Protocol (MCP), LLMs, RAG, MCP
10h
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Staff Full Stack Engineer-Agentic Applications GTM
New York, New York, United States
$137k-$252k/yr OnsiteFull Time
The Trade Desk
The Trade DeskNASDAQ: TTD: Cloud-based programmatic advertising platform for data-driven media buying.
12+ YOEBS in engineering discipline and 12+ years software engineering experience; 2+ years building production LLM/agentic applications; deep Python and TypeScript/JavaScript fluency; experience with agentic frameworks, API integrations, and technical leadership.
LangGraph, LangChain, CrewAI, AutoGen, Semantic Kernel, Python, TypeScript, JavaScript, REST, GraphQL, Salesforce, Outreach, ZoomInfo, Slack
1w
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Peoplesoft Developer (Hybrid)
Canton or Farmington or Boston or Raleigh
$81k-$115k/yr HybridFull Time
Intact Insurance Specialty Solutions
Intact Insurance Specialty SolutionsToronto Stock Exchange: IFC: Provides specialized property and casualty insurance and risk services.
3+ YOE3+ years PeopleSoft Financials and 3+ years enterprise Java or C# development experience; experience with PeopleTools, Application Engine, PeopleCode, Integration Broker, BI Publisher, and BMC Control-M; bachelor’s in CS/IS preferred.
PeopleTools, Application Engine, PeopleCode, Integration Broker, BI Publisher, BMC Control-M, Java, C#