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Java Developer Jobs in Smithtown, NY, US
1,300+ java developer jobs from 310+ companies hiring in Smithtown, NY, US.
2w
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Senior Software Engineer
New York, New York, United States
$245k-$360k/yr OnsiteFull Time
3+ YOE3-5+ years of commercial software development; strong in Java, C#, Python, JavaScript, or Go; cloud platforms (AWS/GCP/Azure) and Kubernetes; AI fluency; strong problem solving, communication, and ownership.
Java, C#, Python, JavaScript, Go, AWS, GCP, Azure, Kubernetes
2w
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Sr Developer - UKG Pro Workforce Management Solutions (Hybrid NYC)
New York, New York, United States
$120k-$160k/yr HybridFull Time
3+ YOE3-5 years as a UKG Pro/ workforce management developer; Boomi and UKG Pro certifications; Java, ETL, data mapping, REST/XML/JSON; cloud architecture knowledge; strong communication and collaboration skills.
UKG Pro, Boomi AtomSphere, Java, ETL, REST, XML, JSON
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
1w
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Senior Software Engineer
Redmond or New York
$120k-$235k/yr OnsiteFull Time
4+ YOEBS in CS or related field and 4+ years of software engineering; proficient in C, C++, C#, Java, JavaScript, or Python; experience with Windows development, CI/CD, and security practices; willing to undergo security screenings.
C, C++, C#, Java, JavaScript, Python, .NET, Win32 API, WinUI3, UWP, CI/CD, Telemetry, Windows development
1mo
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Senior Software Engineer
New York, New York, United States
OnsiteFull Time
10+ YOE10+ years in software development; SDLC; Java, SQL Server, Postgres, Angular, Spring, Docker; Unix shell scripting; Kafka/JMS/Solace; GitLab CI/CD; agile; strong communication and problem solving.
Java, SQL Server, PostgreSQL, Angular, Spring, Docker, Unix Shell, Kafka, JMS, Solace, GitLab, CI/CD
1mo
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Systems Validation Engineer
New York City, New York, United States
OnsiteFull Time
2+ YOE2+ years in software validation or development; testing mobile apps on Android/iOS; embedded firmware/software interaction; React Native/Swift/Objective-C/Java/Kotlin; debugging; issue tracking; hands-on with hardware.
React Native, Swift, Objective-C, Java, Kotlin, CI/CD, Android, iOS, Embedded software, Testing automation
2w
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Volatility Trading Developer
New York, New York, United States
$125k-$150k/yr OnsiteFull Time
Bachelor’s in quantitative field; strong Python/Java/C++; SQL familiarity; problem-solving; trader-focused mindset.
Python, Java, C++, SQL
4w
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Senior Backend Software Engineer - Application Development
New York, New York, United States
$135k-$200k/yr HybridFull Time
6+ YOE6+ years backend development; API design; distributed systems; CS/Math/Engineering background; proficient in Java/C++/Python/Rust/Go; strong communication.
Java, C++, Python, Rust, Go, Kafka, Cassandra, Elasticsearch, Spark, Docker, Kubernetes, Gradle, GitHub
3w
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Lead Software Engineer (New York, NY, US, 10019)
New York, New York, United States
$115k-$140k/yr OnsiteFull Time
Strong Java, Spring, J2EE, Hibernate; full-stack development; CI/CD; mentoring; trading domain knowledge.
Core Java, Hibernate, Spring, Spring Boot, J2EE, CI/CD, Jenkins, GIT
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
1mo
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Staff Engineer
New York City, New York, United States
$146k-$272k/yr HybridFull Time
8+ YOE8+ years in software engineering; Java/Scala/Python; cloud platforms; AdTech; API-first; data processing.
Java, Scala, Python, AWS, GCP, Azure, Spark, Kafka, SQL, NoSQL
4w
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Principal Software Engineer
Columbus or Chadds Ford or Plano or Draper or New York or Wilmington
$184k-$492k/yr HybridFull Time
15+ YOE15+ years in software development across full stack, frontend and backend; BS in CS or related field; strong Agile/DevOps focus; experience with Java, JavaScript, AWS, Azure, React, Angular, Flutter; leadership experience.
Agile Methodology, DevOps, Java, JavaScript, Microsoft Azure Functions, Microsoft Azure SQL, Full Stack Development, Amazon Web Services (AWS), React.js, Angular, Flutter
2mo
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Senior Software Engineer, Checkout (Backend Focused)
Zurich or Berlin or New York City or Bangkok
HybridFull Time
5+ YOE5+ years software development; Java/Spring; frontend contribution; scalable service design; cloud and observability; AI-aware coding; English proficiency.
Java, Spring, Frontend, Cloud, Observability, AI
2mo
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Senior Software Engineer, Wallets
New York, New York, United States
$170k-$260k/yr OnsiteFull Time
5+ YOE5+ years of software development; strong CS fundamentals; proficient in Go, Python, Rust, C#, Java, or C++; experience with distributed systems and scalable web services; strong communication and product mindset.
Go, Python, Rust, C#, Java, C++, NodeJS
1w
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AI Junior / Intermediate Developer - HYBRID (New York, NY, US)
New York, New York, United States
$105k-$219k/yr HybridFull Time
2+ YOE2+ years building or integrating AI tools; proficient in Python, TS/Node.js, Go, or Java; 2+ years with PoC environments and developer tooling; Git/CI-CD experience.
Python, TypeScript, Node.js, Go, Java, Docker, Kubernetes, Git, CI/CD
3mo
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Cloud/C#/AI Developer (NY, New York)
New York, New York, United States
$150k-$175k/yr HybridFull Time
2+ YOE2+ years of development; strong C#, Python, Java; cloud design/deployments (GCP/AWS); AI/ML experience; ML ops; security and APIs.
C#, Python, Java, Google Cloud Platform, AWS, TensorFlow, PyTorch, Vertex AI, SageMaker, CI/CD, MLOps, edge computing, REST APIs, security best practices
4d
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Senior Software Engineer, Academics
New York, New York, United States
$152k-$209k/yr HybridFull Time
6+ YOESenior software engineer with 6+ years experience in software development; proficient in Python, C++, SQL, Java, and R; experience with AWS, Snowflake, DBT, and Databricks; able to lead and collaborate in cross-functional teams.
Python, C++, SQL, Java, R, AWS, Snowflake, DBT, Databricks
3w
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Senior Software Engineer II
Denver or New York City or San Francisco
$174k-$210k/yr HybridFull Time
5+ YOE5–8 years software engineering; strong in TypeScript/Java/C#/Java, Python/JavaScript, SQL; CI/CD; cloud; real-time data; financial services experience preferred.
TypeScript, C#, Java, Python, JavaScript, Ruby, WebSockets, Kafka, PostgreSQL, MySQL, AWS, Azure, GCP, Git, GitHub, JIRA, CI/CD
1mo
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Senior Software Engineer - Build Tooling
New York or Connecticut
$142k-$199k/yr HybridFull Time
5+ YOE8+ years in software development; CI/CD experience; Python/Java/C++/C#; Linux/Unix; AWS; Kubernetes/Docker; IaC (Terraform/CloudFormation); GitOps; on-call readiness.
Python, Java, C++, C#, Bash, Powershell, GitLab CI, GitHub Actions, TeamCity, Jenkins, Argo, SonarQube, Linux, AWS, Docker, Kubernetes, Helm, Terraform, CloudFormation, GitOps, CI/CD
1mo
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Software Engineer II, Customer Value, Insights Expansion
New York City, New York, United States
$120k-$154k/yr HybridFull Time
3+ YOE3-5 years in full-stack software development; backend in Ruby on Rails, Java, C#, Python; frontend in TypeScript/React/Angular; strong SQL and data experience; Agile teamwork.
Ruby on Rails, React, GraphQL, SQL, PostgreSQL, Snowflake, Java, C#, Python, TypeScript, Angular, Vue.js, GraphQL
1mo
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Senior Back-end Engineer
New York, New York, United States
RemoteFull Time
5+ YOE5-12 years in software development; 7+ years with Scala, Java, or Go; experience designing large distributed systems; strong communication; English fluency; CS or software engineering degree; crypto/blockchain knowledge a plus.
Scala, Java, Go, Distributed Systems, High-Performance Computing, APIs, Tests (Automated)
1w
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Software Engineer, Search and Alerts (Chicago, IL, US)
Chicago or New York or Toronto or Monterrey
$90k-$100k/yr HybridFull Time
1+ YOE1-3 years in distributed app development; Java with Spring Boot; Elastic/ELK; AI/ML frameworks; MCP; microservices; CI/CD; DevSecOps; strong communication.
Java, Spring Boot, ELK, LangChain, LlamaIndex, AutoGen, MCP, Elasticsearch, Oracle, PostgreSQL, MongoDB, DynamoDB, AWS, EC2, S3, Route 53, CloudFront, CloudFormation, Kubernetes, Docker, CI/CD, NPM, Grunt
2mo
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Senior Software Engineer - Frontend
New York City, New York, United States
$126k-$248k/yr HybridFull Time
6+ YOE6+ years software engineering; proficient in TypeScript/JavaScript; experience with Java/Go/C/C++ or similar; database querying and indexing; API and feature development; Kubernetes/container experience; on-call rotations.
TypeScript, JavaScript, Java, Go, C++, Kubernetes, Docker, SQL, NoSQL
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
11h
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Mid/Senior Android SDK Engineer
New York, New York, United States
HybridFull Time
7+ YOE7+ years mobile development; 4+ years Android; Bachelor's in CS/SE; Kotlin/Java; Android SDK, MVVM/MVP/Clean Architecture; REST/JSON; Git; CI/CD; English communication.
Kotlin, Java, Android Studio, Gradle, Retrofit, OkHttp, MVVM, MVP, Clean Architecture, REST, JSON, Git, Claude Code, GitHub Copilot
1w
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Software Engineer
New York City, New York, United States
$150k-$200k/yr OnsiteFull Time
2+ YOE2+ years of professional experience in B2B SaaS, Java/C++, AI models, databases, and ASC 606/U.S. GAAP knowledge; Bachelor's in CS; legal work authorization in U.S.
Java, C++, PostgreSQL, MySQL, Oracle, NetSuite, QuickBooks, LLMs, Transformers, Big Data
3h
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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
2mo
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Backend Engineer - Manager - Consulting - Location OPEN (New York, NY, US, 10001-8604)
New York, New York, United States
$143k-$262k/yr HybridFull Time
4+ YOEBachelor's degree; 4-6 years experience; Java or C#; Spring Boot/.Net; AWS or GCP; strong software development, Agile.
Java, C#, Spring Boot, Net, AWS, GCP
3w
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Software Engineer
New York, New York, United States
$140k-$180k/yr OnsiteFull Time
2+ YOE2+ years server-side experience (Python, Ruby, Java); web frameworks (Django, Rails); JS frameworks (React, Angular, Ember, Backbone); SQL; AWS; US work authorization.
Python, Ruby, Java, Django, Rails, Angular, React, Ember, Backbone, AWS, SQL
2mo
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Backend Engineer
New York City, New York, United States
$148k-$195k/yr OnsiteFull Time
3+ YOE3+ years in software engineering; distributed systems experience; proficient in Python/Java/Kotlin/TypeScript; strong DB knowledge (Postgres, Redis, Redshift, BigQuery); REST APIs; independent and collaborative.
Python, Java, Kotlin, TypeScript, Redis, Postgres, RedShift, BigQuery, REST APIs, Django, Pandas, DynamoDB, Docker, Kubernetes, GraphQL
2mo
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Software Engineer, Portfolio Engineering
New York, New York, United States
$170k-$220k/yr HybridFull Time
5+ YOE5+ years backend experience in Java; distributed systems; REST/WebSocket; SQL; cloud (AWS/GCP).
Java, Python, SQL, REST, WebSocket, AWS, GCP
3w
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Senior Software Engineer, Applied AI
New York or Bellevue
$165k-$242k/yr HybridFull Time
7+ YOESenior software engineer with 7+ years of experience, full-stack development, Python/Go/Java/C#, JavaScript/TypeScript, React/Next.js, Docker, Kubernetes, CI/CD, APIs (REST/gRPC), and AI/ML deployment.
Python, Go, Java, C#, JavaScript, TypeScript, React, Next.js, Docker, Helm, REST, gRPC, Kubernetes, Spark, Kafka, CI/CD
1mo
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Senior Application Developer
New York, New York, United States
$145k-$155k/yr HybridFull Time
5+ YOELead developer for enterprise systems; strong backend and frontend integration; AI/automation experience a plus; 5-7 years in application development; Real Estate/Attractions experience a plus.
Python, C#, Java, C++, Git, APIs, Salesforce, ETL, Tableau, Power BI, LLMs, AI, Automation
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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Senior Backend Engineer, US Exchange
New York, New York, United States
RemoteFull Time
4+ YOE4–7+ years backend development; strong C/C++ (preferred) or Go/Rust/Java; low-latency, high-throughput systems; Linux production debugging; plus trading/Kafka/Pulsar/gRPC/Protobuf/cloud/containers.
C++, Go, Rust, Java, Kafka, Pulsar, RabbitMQ, gRPC, Protobuf, AWS, GCP, Docker, Kubernetes
2w
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Senior Backend Engineer
New York City, New York, United States
$140k-$180k/yr HybridFull Time
7+ YOE7+ years Java/Spring Boot, REST APIs, messaging queues, NoSQL, AI tool integration, Git/CI/CD, agile, debugging and collaboration.
Java, Spring Boot, REST APIs, RabbitMQ, AWS SQS/SNS, MongoDB, Claude, Opencode, Git, CI/CD
2w
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Senior Software Engineer, Global Banking & Markets, Equities Trading Technology
New York City, New York, United States
$150k-$300k/yr OnsiteFull Time
8+ YOE8+ years Java software development; AI-assisted tooling; event-driven distributed systems; SDLC, testing; navigate large codebases; strong communication.
Java, GCP, AWS, Kubernetes, Docker, Apache Kafka, Spring Boot, gRPC, Protocol Buffers, CI/CD, GitHub Copilot, Claude Code, Gemini Code Assist, Netty, Vert.x
1mo
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Staff Software Engineer, Fullstack (Marketing)
New York City or San Francisco or United States
$170k-$250k/yr RemoteFull Time
7+ YOE7+ years software development; 3+ years Java; 3+ years React/React Native; 3+ years TypeScript; strong mobile/web UI; experience with Spring, AWS, SOA, REST, containers; data-driven onboarding focus.
Java, Spring, Gradle, JUnit, JVM, REST, SOA, AWS, EKS, Aurora, Elasticache, DynamoDB, React, React Native, TypeScript, CI/CD, GitHub Actions, DataDog, Snowflake, CDK, Terraform
5d
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Senior Software Engineer, Cash App Banking
New York, New York, United States
$218k-$327k/yr OnsiteFull Time
8+ YOE8+ years software development; 1+ year leading large-scale features; bachelor’s degree in CS/CE/Software Eng or equivalent; strong design and problem-solving skills; experience with Java/Kotlin and AWS.
Java, Kotlin, AWS, HTTP, JSON, gRPC, Protocol Buffers, OkHttp, Jetty, JUnit, Guice, Hibernate, MySQL, DynamoDB, Kafka
5d
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Software Development Engineer
New York City, New York, United States
$161k-$230k/yr OnsiteFull Time
3+ YOEMaster’s degree in CS or related field with 3+ years experience; Python/Java/Golang/C++; Kubernetes/Docker; CI/CD; NGINX/Envoy; Prometheus/Grafana; AWS/GCP; PostgreSQL/MongoDB; Terraform/Pulumi; SRE practices.
Python, Java, Golang, C++, Kubernetes, Docker, NGINX, Envoy, CI/CD, Jenkins, GitHub Actions, Prometheus, Grafana, AWS, GCP, PostgreSQL, MongoDB, Terraform, Pulumi, Site Reliability Engineering
HiringCafe market data
Java Developer Jobs market signals in Smithtown, 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
1,300+
Hiring companies
310+
Fresh sample
51% new in 30d
Salary visibility
87% show pay
Companies appearing in this market
AppleBlockForge GlobalGoldman SachsMicrosoftMongoDBOptimumPalantir
Work location mix in visible results
Hybrid: 44Onsite: 34Remote: 5