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Java Developer Jobs in Port Jefferson, NY, US
110+ java developer jobs from 57 companies hiring in Port Jefferson, NY, US.
2w
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Java Developer
Boston or Tarrytown
HybridFull Time
2+ YOEBachelor’s or master’s degree; 2+ years Java development; lab informatics/LIMS experience preferred; Agilent SLIMS a plus; Jira/story writing.
Java, Jira, SLIMS, Laboratory Information Management System
1d
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Senior DevOps Engineer with Java & ETL experience
Ridgefield Park, New Jersey, United States
$9k/mo OnsiteFull Time
9+ YOE9+ years in DevOps and web-based system development with Java; strong J2EE, Java, SQL, ETL, and BI/ETL tooling experience; bilingual in Korean and English; Bachelor's in computer science or IT-focused degree.
Java, J2EE, Spring, iBatis/Hibernate/JPA, JDBC, JSP/Servlet, Web Services, JMS, WebLogic, JBoss, Tomcat, UNIX, Linux, Windows, Oracle, MS SQL, MariaDB, ETL tools, Alteryx, Oracle Data Integrator, MS SQL SSIS, Tableau, Power BI
1mo
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Lead Software Engineer -Java/AWS
New York or Wilmington
$152k-$215k/yr OnsiteFull Time
5+ YOE5+ years software engineering; strong Java/J2EE, REST, Spring, AWS; leadership; agile; security knowledge.
Java/J2EE, REST APIs, Web Services, Kafka, Spring Framework, Spring Boot, AWS, CI/CD, GIT/Bitbucket, JIRA, Maven
2mo
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Lead Software Engineer (Java/NextJS) - Peer Insights
Irving or Stamford
$116k-$170k/yr HybridFull Time
5+ YOE5+ years in web app development; strong React, Next.js, Java, TypeScript; UI-focused; secure coding practices; multi-platform design; cloud and containerized pipelines knowledge.
React, Next.js, Java, TypeScript, PL/SQL, ElasticSearch, Valkey
2w
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Sr Lead Software Engineer (Java,AWS)
New York, New York, United States
$171k-$260k/yr OnsiteFull Time
5+ YOE5+ years software engineering; strong Java and AWS experience; Kafka/IBM MQ; trading domain knowledge.
Java, AWS, Python, C++, Spring Boot, .NET, SQL, Kafka, IBM MQ, Tibco, AMPS
2w
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Application Developer / Engineer I
Atlanta or Wallingford or Louisville or Tampa or Indianapolis or Miami or Wilmington or Mason or Richmond or Des Moines
HybridFull Time
3+ YOEBA/BS in IT or CS; 3+ years in application/system development; .NET, Java, Angular/React; API development; SQL Server; MongoDB; cloud concepts; on-call support.
.NET, Java, Angular, React, APIs, SQL Server, MongoDB, Cloud
4d
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Backend Software Developer
Greenwich, Connecticut, United States
HybridFull Time
4+ YOEBachelor's degree in computer science or related field; 4+ years in backend development with Java; experience with Spring, Oracle, REST, Python; financial services experience preferred.
Java, Spring, Spring Boot, JDBC, Oracle, PL/SQL, REST, JMS, ActiveMQ, Git, Python, Shell Scripting
1w
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Sr. Software Engineer
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
5+ YOEDesign, develop, maintain APIs/integrations; 5+ years production software; proficient in C#, Java, or JavaScript/Node.js; strong problem-solving and communication.
C#, Java, JavaScript/Node.js, AWS, Code assistants (Copilot/Claude)
2mo
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Senior Firmware Engineer - Audio & Video Streaming
Plano or Rockleigh
$108k-$174k/yr OnsiteFull Time
5+ YOE5-7 years in firmware development for embedded Linux/Android; C/C++/Java; networking protocols; Android apps/services; video/graphics systems; streaming protocols.
C/C++, Java, Embedded Linux, Android, Android Apps and Services, Linux/Android, Networking protocols (TCP/UDP/HTTP), RTP/RTSP, Video/Graphics (VAAPI, GStreamer, FFmpeg, OpenMAX, OpenGL), Android framework customization
1mo
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Software Engineer (AI/ML Interface Development)
San Diego or Nashua or Greenlawn or Durham
$92k-$157k/yr HybridFull Time
4+ YOEBS in CS/Software Engineering; 4+ years in software development; strong AI/ML interface experience; proficiency in Python, Java, C++; API/microservices; experience with LLMs and vector databases; Docker/Kubernetes; CI/CD; US Secret Clearance.
Python, Java, C++, Docker, Kubernetes, APIs, CI/CD, LLMs, vector databases
2w
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Android Developer (Berlin, CT, US, 06037)
Berlin, Connecticut, United States
OnsiteFull Time
3+ YOEBachelor’s degree in Computer Engineering, Computer Science, Information Systems or related field; 3 years mobile development experience; Kotlin/Java for Android; Jenkins, Maven, GitHub/GitLab; RESTful SDKs/APIs; SQL; SCRUM; Agile; in-office work required
Kotlin, Java, Jenkins, Maven, GitHub, GitLab, RESTful APIs, SQL, SCRUM, Agile
3w
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Sr. Android Engineer, CNBC
Englewood Cliffs, New Jersey, United States
$155k-$175k/yr HybridFull Time
5+ YOE5+ years Android development; Kotlin/Java; MVVM/ Clean Architecture; Kotlin Coroutines/RxJava; video streaming (HLS/DASH/DRM); REST/GraphQL; CI/CD; Android Studio tooling.
Kotlin, Java, Jetpack, MVVM, Clean Architecture, Jetpack Compose, HLS, DASH, DRM, REST, GraphQL, Kotlin Coroutines, RxJava, Android Studio, CI/CD, Firebase, Bitrise, Jenkins, Dagger, Hilt, Koin
3mo
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Software Development Engineer II (Bethpage, NY, US, 11714)
Bethpage, New York, United States
$100k-$165k/yr OnsiteFull Time
3+ YOEBachelor’s in CS; 3-5 years in software development, automation and tools; Java & C; cloud (GCP or AWS); DevOps; CI/CD; test automation.
Java, C, Google Cloud, Amazon Web Services, CI/CD, DevOps tools, Test automation
7h
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Full Stack Engineer, Senior
Oakland or Seattle or WA or OH or CA or Long Beach or AZ or CO or CT or FL or GA or MD or MN or NV or OR or El Dorado Hills or Lodi or Rancho Cordova or Redding or San Diego or Woodland Hills or AL or IL or VA or WI or TX or NY
$103k-$174k/yr HybridFull Time
5+ YOE5+ years full stack development; BA/BS or equivalent IT experience; React/Vue/Angular; .NET/Java/Node.js/Python APIs; SQL/NoSQL; Azure preferred; Docker; IaC; CI/CD; AI tools; healthcare experience preferred.
React, Vue, Angular, JavaScript, TypeScript, .NET, Java, Node.js, Python, MS SQL Server, Oracle, NoSQL, REST, Azure, AWS, GCP, Docker, Kubernetes, Ansible, Bicep, ARM, Terraform, GitHub, GitLab, Bitbucket, Git
1mo
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R&D Staff Software Engineer
Pittsburgh or Melville
$108k-$173k/yr OnsiteFull Time
8+ YOE8+ years mainframe software development; JavaScript/TypeScript, Java, C/C++, Node.js; Linux/Unix; VS Code extensions; CLI; Git; Agile/Scrum.
JavaScript, TypeScript, Java, C/C++, Node.js, VS Code, AG Grid, React
2mo
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AI Engineer
Plano or Chicago or Purchase
$106k-$178k/yr HybridFull Time
Bachelor’s or Master’s in CS/AI/DS. Proven AI project leadership; strong coding in Python/Java/C++; experience with GenAI, Agentic AI, cloud deployment (AWS/Azure/GCP); capable communicator and cross-functional collaborator.
Python, Java, C++, Langchain, CrewAi, MCP, A2A, AWS, Azure, Google Cloud
2mo
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Sr Software Engineer
Bristol or Glendale
$142k-$190k/yr HybridFull Time
5+ YOE5+ years experience; BS in CS or equivalent; proficient in Java, Python, or JavaScript; REST/GraphQL; AWS; Docker; Kubernetes; CI/CD; databases; Agile; strong communication.
Java, Python, JavaScript, REST APIs, GraphQL, AWS, S3, Lambda, EC2, Docker, Gitlab-CI, Terraform, CloudFormation, Jenkins, Kubernetes, MongoDB, Redis, Elasticsearch, PostgreSQL, DynamoDB
2mo
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Software Engineer II
Brooklyn or United States
$105k-$125k/yr RemoteFull Time
2+ YOE2-4 years software engineering; full-stack; Python/SQL; Java or modern SPA; REST; strong problem solving.
Python, SQL, Java, React, Vue, Angular, REST, AWS, S3, MongoDB, DBT, Snowflake
1mo
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Portfolio Analytics Engineer - Vice President
Greenwich, Connecticut, United States
$165k-$185k/yr OnsiteFull Time
7+ YOE7+ years software engineering, expert in Java, Python production, distributed microservices, observability, and finance interest.
Java, Python, Elasticsearch, Redis, RabbitMQ, PostgreSQL, MS SQL Server
1mo
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Software Engineer
Danbury, Connecticut, United States
OnsiteFull Time
8+ YOE10+ years in object-oriented software design; 8+ years in C++ development; real-time control for mechatronics; RTOS (RTX); Agile experience; BS/MS in CS or related; strong problem solving and communication.
C++, Java, C#, .NET, RTX, SQLServer, Oracle
1w
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Sr. API Engineer
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
5+ YOE5+ years production software development; REST/GraphQL APIs; AWS serverless; CI/CD; third-party integrations; AI tooling familiarity.
AWS, API Gateway, DynamoDB, SQS/SNS, REST, GraphQL, Node.js, Java, C#, GitHub Actions, Azure DevOps, Git, GitHub Copilot, Claude
5d
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Software Engineer III - Full Stack
Brooklyn, New York, United States
$100k-$145k/yr HybridFull Time
4+ YOE4+ years programming experience; strong Java/ReactJS; OOP and design patterns; shipping large software projects; quick learner; team collaboration.
Java, ReactJS, Redis, JavaScript, RabbitMQ, MySQL, MongoDB, Kotlin, SpringBoot, Splunk
1w
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Software Engineer - Early Career (USA)
Stamford, Connecticut, United States
$130k-$175k/yr OnsiteFull Time
BS/MS in Computer Science or related STEM; strong data structures, algorithms, OOP; proficient in C++, C, Python, Java, or Rust; Linux familiarity; strong problem-solving and quick learning in a collaborative team.
C++, C, Python, Java, Rust, Linux
1mo
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Software Engineer - Cumberland/FICCO Tools Engineering
Greenwich, Connecticut, United States
$175k-$225k/yr OnsiteFull Time
2+ YOE2+ years in Python/Java/C++, experience shipping production systems, strong customer-facing skills, Linux-based high-throughput systems, degree in CS/Math/Physics/Engineering.
Python, Java, C++, TypeScript, Linux
1mo
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Software Engineer- Programming Knowledge Onsite Great River, NY
Great River, New York, United States
$70k-$117k/yr OnsiteFull Time
Bachelor’s degree or equivalent; strong Java, C#, .NET; SQL; cloud SaaS; onsite in Great River NY; ability to learn; on-call.
Java, C#, .NET, SQL, Cloud SaaS, Relational databases
2mo
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Senior Software Engineer - Intelligent Document Processing
Hartford or Danbury or Charlotte or New York or Columbus or Chicago
$137k-$206k/yr HybridFull Time
5+ YOE5+ years software engineering; strong Python and .NET or Java; cloud-native AWS; CI/CD and infrastructure-as-code; distributed systems.
Python, .NET, Java, AWS, Docker, Kubernetes, CI/CD, Infrastructure as Code, OCR, NLP
1w
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Software Engineer, Macro Technology
New York City or Stamford
OnsiteFull Time
6+ YOE6+ years software engineering; BS in CS/Engineering/Math; 5+ years backend (C#/Java); 3+ years frontend (React); 5+ years SQL; 3+ years in financial trading tech; experience with AI tooling; US work authorization; based in Stamford, CT or New York City onsite.
C#, Java, React, SQL, APIs, AI tools, Cloud
3w
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Software Developer - Front-Office Trading ( AVP
Burlington or Boston or Stamford or Clifton or Princeton or Berwyn
$90k-$158k/yr OnsiteFull Time
5+ YOEJava and C# programming; XML/WS; ETL tools; database knowledge; travel 50-80%; financial services/consulting experience preferred.
Java, C#, XML, Web Services, ETL, Kettle, Talend, Tomcat, Perforce, Oracle, MS SQL Server, Perl, Crystal Reports, SQL Server Reporting Services, MQ Series, MSMQ, SonicMQ, Open JMS, Kafka, XML/XSLT
2mo
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Software Engineer III - VxWorks
Bohemia, New York, United States
$90k-$115k/yr OnsiteFull Time
4+ YOEDevelop embedded software for VxWorks; BSP kernel/driver work; GUI tools; 4+ yrs experience; C/C++, Windows/Linux; U.S. citizenship required.
C, C++, C#, Java, Windows, Linux, PetaLinux, VxWorks, Yocto, Buildroot, JTAG, Oscilloscope, Multimeter, Logic analyzer
1mo
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AVP, Product Engineer - AML
Chicago or Stamford or Alpharetta or Dallas or New York City or Charlotte or Cincinnati
$100k-$170k/yr HybridFull Time
3+ YOEDevelop, enhance AML products; 3+ years software engineering; Java/Python/C#; AML knowledge and collaboration with compliance teams.
Java, Python, C#, AML software platforms, SQL/NoSQL, APIs, ETL tools
1d
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Senior Software Engineer, Zaidyn
Chicago or New York or Princeton
HybridFull Time
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
2mo
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Mobile Security Engineer - Req# 502
Southington, Connecticut, United States
$110k-$155k/yr HybridFull Time
4+ YOE4+ years mobile app development; secure coding; iOS/Android; security tools; CI/CD; cross-team collaboration.
Swift, Objective-C, Kotlin, Java, Burp Suite, MobSF, Frida, Drozer, Postman, Checkmarx, Fortify, SonarQube, Git, CI/CD
1w
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Senior Software Engineer, APIs
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
5+ YOE5+ years production software development; RESTful/GraphQL APIs at scale; AWS serverless; AI tooling; third-party integrations; CS/SE degree or equivalent; Shelton, CT location.
AWS, API Gateway, DynamoDB, SQS, SNS, Node.js, Java, C#, REST, GraphQL, GitHub Copilot, Claude, GitHub Actions, Azure DevOps
1mo
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Jr. Software Engineer - AI & Prompt Engineering (Contract to Perm)
New York, New York, United States
$40-$60/hr OnsiteContract, Full Time
Bachelor’s degree in Computer Science or related field; strong CS fundamentals; proficiency in at least one language (Python/JavaScript/Java); familiarity with APIs, debugging, testing, and version control; exposure to AI/prompt engineering.
Python, JavaScript, Java, APIs, Git
2d
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Software Engineer (Development & QA Automation) (Hybrid - Newark, NJ or NYC)
Edgewood or Newark or New York City
$90k-$950k/yr HybridFull Time
Bachelor's degree in Computer Science or equivalent; experience with Java, Python, Perl, Linux, scripting, Selenium, and Cucumber; automated testing experience; AGILE knowledge.
Java, Python, Perl, Linux, Shell scripting, Selenium, Cucumber
1w
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AI Full Stack Engineer Sr Stf
Bethesda or Dover or Fort Worth or Highlands Ranch or King of Prussia or Moorestown or Orlando or Stratford
RemoteFull Time
15+ YOESenior AI/ML engineer with full-stack development, cloud deployment, and data/AI experience; US citizenship required; Bachelor's or higher in CS/IT/AI.
Python, CI/CD, GitLab, Jenkins, ArgoCD, RDS, Redshift, Snowflake, LLMs, MLOps, GenAI, API Development, Java, C++
2w
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Principal Engineer-Test
Hauppauge, New York, United States
$91k-$232k/yr OnsiteFull Time
10+ YOEBachelor’s/Master’s in Computer/Electrical Engineering or Computer Science; 10+ years in semiconductor IC development; strong digital/analog knowledge; experience with ATE hardware/software; programming in C/C++/Java; familiarity with version control and lab equipment.
ATE hardware/software (Diamond X, J750, Advantest v93k), C, C++, Java, GIT, SVN, Perforce, Linux, Windows, Oscilloscopes, Bench hardware
19h
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GIS Application Developer
Brooklyn, New York, United States
$68k-$125k/yr OnsiteFull Time
8+ YOE8+ years in GIS web apps and microservices; Java, ArcGIS, Cloud (AWS/Azure); containers; CI/CD; strong communication; multi-agency government experience preferred.
Java, JavaScript, Python, C#, Esri ArcGIS, Carto, GeoServer, AWS, Microsoft Azure, Azure AKS, Azure LogicApps, SQL Server, APIM Gateway, Docker, Kubernetes, CI/CD tools (Azure DevOps, Git, Maven/Gradle)
3w
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Software Engineer
Great Neck, New York, United States
$120k-$160k/yr OnsiteFull Time
3+ YOE3+ years software engineering; BS in CS/SE; proficient in Python, C/C++, Rust, Go, or Java; shipping software experience; ML workflows; Unix/Linux; ITAR citizen.
Python, C/C++, Rust, Go, Java, Unix/Linux, Machine Learning frameworks
5d
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Software Development Engineer in Test (SDET)
Shelton, Connecticut, United States
$103k-$128k/yr OnsiteFull Time
4+ YOE4–7 years in software testing/automation; strong coding skills; familiarity with test automation frameworks; REST API testing; CI/CD experience.
Programming languages, Test automation frameworks, Selenium, Cypress, Playwright, REST-assured, Postman, Java, JavaScript, Python, C#, CI/CD
HiringCafe market data
Java Developer Jobs market signals in Port Jefferson, NY, US
These signals come from live HiringCafe job inventory, not a static article. Use them to compare the market, then open listings above to apply directly.
Open jobs
110+
Hiring companies
57
Fresh sample
56% new in 30d
Salary visibility
86% show pay
Companies appearing in this market
SubwayJPMorgan ChaseOptimumSBT GlobalSynchronyThe HartfordTrexquantAQR Capital Management
Work location mix in visible results
Onsite: 42Hybrid: 25Remote: 4