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55 core java software engineer jobs at 25 companies in Norwalk, CT

3w
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Core Java Developer - Trading / Securities Lending - Vice President
New York, New York, United States
$142k-$213k/yr HybridFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
6+ YOE6+ years applications development experience with Core Java; experience with Kafka, SQL, Git; QA/TDD/BDD practices; ability to work across geographies and with traders.
Java, Kafka, SQL, Git, React
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3w
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Core Java Developer - Trading / Securities Lending - Vice President
New York City, New York, United States
$142k-$213k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
6+ YOE6+ years applications development experience with Core Java, Kafka, SQL, Git; experience with QA,TDD/BDD, system analysis, agile delivery; strong problem-solving and stakeholder management.
Core Java, Java, Kafka, SQL, Git, React, TDD, BDD
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3w
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Core Java Developer - Trading / Securities Lending - Vice President
New York, New York, United States
$142k-$213k/yr HybridFull Time
Citi
CitiNYSE: C: A global financial services providing banking and credit services.
6+ YOERequires 6–10 years of application development experience, extensive Core Java, Kafka, SQL, Git, QA, TDD, BDD, agile methods, problem-solving, and a computer science or related bachelor's or master's degree.
Java, Kafka, SQL, Git, React, TDD, BDD
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2w
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Senior Java Engineer
New York City, New York, United States
$130k-$150k/yr HybridFull Time
RE Partners
RE Partners: Providing technology consulting and digital transformation services for enterprise clients.
10+ YOERequires 10+ years of Java development experience, Core Java, Spring, microservices, MongoDB, OpenShift or Kubernetes, AWS, performance optimization, and strong communication skills.
Java, Spring Boot, Spring, RESTful APIs, OpenShift, AWS, MongoDB, Kubernetes, ECS, EKS, Lambda, S3, Kafka, RabbitMQ, ISO 20022, SWIFT
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3d
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Staff Software Engineer - Core Experience
New York City or San Francisco
$189k-$315k/yr HybridFull Time
Rippling
Rippling: Unified platform managing workforce HR, IT, and finance operations
8+ YOE8+ years of software engineering experience with strong backend systems expertise, systems design, scalability, fault tolerance, data modeling, and proficiency in a modern backend language such as Python, Go, or Java.
Python, Go, Java, SQL, NoSQL, Slack, Microsoft 365
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2mo
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Senior Software Engineer, Core
New York or London or Singapore or Cyprus
$250k-$275k/yr HybridFull Time
Talos
Talos: Provider of institutional digital asset trading and infrastructure technology.
7+ YOE7+ years backend engineering experience with systems languages (Go, C++, Java, Rust). Deep distributed systems ownership, low-latency messaging (Aeron), API layers (FIX, WebSocket, REST), and strong systems-level fundamentals.
Aeron, Chronicle, LMAX Disruptor, ZeroMQ, FIX, WebSocket, REST, Go, C++, Java, Rust
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2w
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Java Scala Developer
Jersey City or Pennington
$76k-$127k/yr OnsiteFull Time
Infosys
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Bachelor's degree or equivalent experience; expertise in Scala, functional programming, Core Java, concurrency, JVM performance, and software development lifecycle practices. U.S. work authorization required.
Scala, Java, Core Java, RESTful APIs, Akka, JVM
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1mo
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Core Java Application Support Engineer
Charlotte or Scottsdale or New York City or Morristown
$44-$54/hr HybridFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
5+ YOEAdvanced Core Java skills,5+ years relevant experience,associate degree or greater; experience with React.js,PL/SQL,Spring Boot,Apache Kafka,GIT,Eclipse,XML/JSON,and WebLogic/JBoss; strong communication and leadership.
Core Java, React.js, PL/SQL, Spring Boot, Apache Kafka, GIT, Eclipse, XML, JSON, WebLogic, JBoss
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3mo
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Software Development Engineer - Cybersecurity, SBS Core Engineering
New York, New York, United States
$158k-$214k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
3+ YOE3+ years software development and architecture design; experience with multi-tier distributed systems; Bachelor's in CS/Engineering/Mathematics; proficiency in C#, C++, Java, or Perl.
C#, C++, Java, Perl
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2mo
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Senior Java Developer - Rates Derivatives Algo & E-Trading
New York, New York, United States
$155k-$215k/yr OnsiteFull Time
Morgan Stanley
Morgan StanleyNYSE: MS: Global financial services firm providing investment and wealth management.
10+ YOE10+ years software development experience; strong Core Java (JDK 21+), OOP, and problem-solving skills; Fixed Income domain knowledge (Swaps preferred); bachelor's in CS/Engineering or equivalent; exposure to Python/Scala and AI tools beneficial.
Core Java, JDK 21, Python, Scala, Tradeweb, Bloomberg, AMP, Claude Code
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2mo
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Senior Java Developer - Rates Derivatives Algo & E-Trading
New York, New York, United States
$155k-$215k/yr OnsiteFull Time
Morgan Stanley
Morgan StanleyNYSE: MS: Provides global investment banking, wealth management, and advisory services.
10+ YOEBachelor's degree or equivalent experience; 10+ years software development; strong Core Java (JDK 21+ beneficial); OOP and legacy system experience; Fixed Income/Swaps and eTrading/algo exposure preferred; familiarity with AI tools beneficial.
Java, JDK 21, AMP/Claude Code, Python, Scala, Tradeweb, Bloomberg
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1mo
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Senior Software Engineer
New York, New York, United States
OnsiteContract
Mphasis
MphasisNational Stock Exchange of India / Bombay Stock Exchange: MPHASIS / 526299: Provider of IT consulting and digital transformation services.
15+ YOERequires a BS in computer science, engineering, or related field; 15 years of Core Java experience; Spring, REST, Gradle, MQ, testing, Git, Jenkins, Agile, and DevOps expertise.
Java, JavaScript, HTML5, Gradle, Spring, Spring Boot, Spring Batch, IBM WebSphere MQ Series, Kafka, REST, SOAP, JUnit, Concordion, Cucumber, Gherkin, Git, Jenkins, Hazelcast, WebSockets
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1mo
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Java Full Stack Developer
Jersey City or New York City
$82k-$127k/yr OnsiteFull Time
Infosys
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Bachelor's or equivalent experience; strong Core Java, Spring Boot, Angular, microservices, SQL skills; experience with REST APIs, testing, troubleshooting; US work authorization required; AI tools and Python preferred.
Java, J2EE, Spring Boot, Struts, Angular, Microservices, REST API, SQL, Microsoft SQL Server, Oracle, PostgreSQL, MySQL, Python, AI tools
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6h
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Senior Software Engineer - Vector Search - Elasticsearch
United States or Seattle or Los Angeles or California or New York City
$133k-$211k/yr RemoteFull Time
Elastic
ElasticNYSE: ESTC: Search AI platform for search, observability, and security.
Requires novel vector similarity or information retrieval experience, search or vector database expertise, core Java skills, scalable algorithms, autonomous project ownership, and collaborative software development experience.
Elasticsearch, Lucene, GitHub, Zoom, Slack, Java, HNSW, IVF, Solr, PostgreSQL, MongoDB, Cassandra
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2w
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Software Engineer II-Hybrid Role
Greenwich, Connecticut, United States
HybridFull Time
Payarc
Payarc: Technology-driven payment processing and merchant services platform.
2+ YOERequires 2–4 years of software development experience, a bachelor's degree or equivalent, proficiency in a core language/framework, RESTful APIs, relational databases, Git/GitHub, and strong analytical skills.
PHP, Laravel, Nova, Apiato, Java, C#, Python, Go, C++, JavaScript, React, Angular, jQuery, HTML5, CSS3, LESS, SASS, Material Design, Kotlin, Swift, Objective-C, React Native, Flutter, Retrofit, OkHttp, Firebase, MySQL, Oracle, Firebird, Amazon Web Services (AWS), Git, GitHub, Docker, Kubernetes, TensorFlow, PyTorch, scikit-learn, JIRA, Confluence, Crashlytics, New Relic, Azure, GCP, TDES, DUKPT, PAX, AMP, Magtek
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4w
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Sr. Developer - Automation Core
Tarrytown, New York, United States
$94k-$153k/yr HybridFull Time
Regeneron
RegeneronNasdaq: REGN: Discovers and manufactures medicines for serious diseases.
3+ YOE3+ years software development for life‑sciences R&D or lab informatics; proficiency in Java and Python; experience with LIMS/ELN (Sapio/Benchling/Dotmatics); AI/GenAI and data integration experience.
Sapio, Benchling, Dotmatics, Java, Python, LangChain, LlamaIndex, Claude/Anthropic APIs, OpenAI APIs, TetraScience, HighRes Cellario, Docker, Kubernetes, Jenkins, GitHub Actions, Spotfire, Tableau, Microsoft Power BI, Jupyter notebooks
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4w
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Sr. Developer - Automation Core
Tarrytown, New York, United States
$94k-$153k/yr HybridFull Time
Regeneron Pharmaceuticals
Regeneron PharmaceuticalsNASDAQ: REGN: Discovers and develops medicines for serious diseases.
3+ YOEBachelor's degree plus 3+ years software development experience supporting life sciences R&D; proficiency in Java and Python; experience with LIMS/ELN (Sapio/Benchling/Dotmatics) and AI/GenAI tooling; data integration and instrument interfacing experience.
Sapio, Benchling, Dotmatics, Java, Python, LangChain, LlamaIndex, Claude, Anthropic APIs, OpenAI APIs, TetraScience, HighRes Cellario, Docker, Kubernetes, Jenkins, GitHub Actions, Spotfire, Tableau, Microsoft Power BI, Jupyter notebooks
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2w
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Software Engineer Intern (Winter 2027)
San Francisco or New York City
$55/hr OnsiteInternship
Figma
FigmaNew York Stock Exchange: FIG: Collaborative interface design and prototyping software for teams.
Clean coding experience in a general-purpose language, core computer science knowledge, technical problem-solving experience, and strong communication and collaboration skills.
C++, JavaScript, Python, Java
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2mo
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Senior Lead Software Engineer, Full Stack (Python, ReactJS, AWS)
New York or McLean or Richmond
$209k-$286k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
6+ YOEBachelor's degree, 6+ years software engineering, 1+ year cloud experience (AWS/Azure/GCP). Preferred: master’s, 9+ years in core languages, 4+ years cloud and open-source frameworks, people management, Databricks, Snowflake, Agile, and interactive AI tooling experience.
ReactJS, JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, Go, Docker, Kubernetes, AWS, Microsoft Azure, Google Cloud, Databricks, Snowflake
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1mo
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Specialist - Software Engineering
London or Paris or New York City or Mississauga or Shanghai or Sydney or Tokyo or India
HybridFull Time
LTIMindtree
LTIMindtreeNational Stock Exchange of India: LTIM: Global technology consulting and digital solutions.
5+ YOERequires 5 years of server-side Core Java and multithreading experience, Spring, Linux, relational databases, enterprise architecture, Agile, testing, CI/CD, and computer science fundamentals.
Java, Spring, Linux, OpenShift, Jira, GitHub, Sonar, TeamCity, IntelliJ IDEA, Gradle, ION, JSON, XML, REST, KDB, Copilot, Claude, Devin, UAT, Agile, continuous integration, continuous delivery, test-driven development
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