Core Java Developer Jobs in Norwalk, CT, US

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Principal Java Developer

New York, New York, United States

$120k-$200k/yr HybridContract

RE Partners: Providing technology consulting and digital transformation services for enterprise clients.

10+ YOE10+ years in Java development; strong Core Java and SpringBoot; low-latency, high-throughput backend experience; OpenShift/Kubernetes, AWS, MongoDB; REST/microservices; collaborative, opinionated culture.

Java, MongoDB, Spring, OpenShift, Kubernetes, AWS, REST, Microservices

1mo

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1mo

Lead Software Engineer - .Net and Core Java

New York or Plano

$152k-$215k/yr OnsiteFull Time

JPMorgan ChaseNYSE: JPM: Global financial firm providing banking and investment management services.

5+ YOE5+ years software development; MS.Net and Core Java; AWS; SDLC; Agile; CI/CD; secure, scalable code.

Microsoft .Net, Java, AWS, Terraform

1mo

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1mo

Senior Java Engineer

Jersey City, New Jersey, United States

$150k-$225k/yr RemoteFull Time

Tradeweb MarketsNasdaq: TW: Operates electronic marketplaces for fixed income and derivatives trading.

5+ YOE5+ years Core Java; Spring Boot, Kafka, Redis; Typescript & Node.js; microservices; REST/WebSocket; Docker; RDBMS; strong multi-threading and distributed systems experience.

Java, Spring Boot, Kafka, Redis, Typescript, Node.js, REST, WebSocket, Docker, RDBMS, Microservices

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Java Engineer - Senior Associate - 68645031

Dallas or New York

$65k-$90k/yr OnsiteFull Time

CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.

4+ YOE4+ years hands-on Java/J2EE development; Spring Framework (Core, MVC, Boot, Integration, Cloud); REST APIs; Hibernate; JS/HTML; Unix/Linux; CI/CD with Git/Jenkins; production support; on-site in Dallas or New York.

Java, Spring Framework, Spring Core, Spring MVC, Spring Boot, Spring Cloud, REST, Hibernate, JSP, Servlets, JDBC, JavaScript, HTML, Unix, Linux, Git, Jenkins, Autosys, Crontab, CI/CD, Tomcat, JBoss, WebSphere, WebLogic, Oracle, DB2, Sybase, Pl/SQL, Eclipse, NetBeans

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Java Software Engineer III

Boston or Jersey City

$133k-$185k/yr OnsiteFull Time

JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.

3+ YOE3+ years software engineering; Java, Spring Core/Boot, REST, Kubernetes, Docker, Kafka; cloud (AWS/GCP/Azure); SQL; CI/CD; security best practices.

Java, Spring Core, Spring Boot, REST APIs, Kubernetes, Docker, Kafka, SQL, Cloud (AWS,GCP,Azure), CI/CD

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Lead Java Software Engineer – Equity Derivatives Risk, Quant & AI‑Enabled Platforms

Iselin or New York

$191k-$305k/yr HybridFull Time

Wells FargoNYSE: WFC: Global provider of banking, investment, and mortgage financial services.

5+ YOE5+ years in specialty software engineering and Core Java; distributed systems design; NoSQL experience; in-memory data grids; AI tooling familiarity; strong communication; Bachelor’s in CS/Engineering preferred.

Java, NoSQL, MongoDB, Cassandra, Oracle Coherence, Apache Ignite, GemFire, GitHub Copilot, IDE

1mo

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1mo

Senior Software Engineer - Supply Core

Aliso Viejo or New York or Seattle

$200k-$250k/yr HybridFull Time

StubHubNYSE: STUB: Online marketplace for buying and selling live event tickets.

5+ YOE5+ years in software development; Java or C#; experience with infrastructure, databases, data processing, distributed systems, security and privacy; end-to-end ownership; mentoring experience.

Java, C#, Databases, Machine Learning, Distributed Systems, Security, Privacy

2mo

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2mo

Sr. Software Engineer, Cloud - Core Reliability Services

Sunnyvale or Austin or New York City

$140k-$215k/yr HybridFull Time

CrowdStrikeNASDAQ: CRWD: Provides cloud-native endpoint protection and threat intelligence services.

7+ YOE7+ years backend development; 5+ years microservices; expert in Golang; distributed systems; production-grade code with performance and reliability focus; strong collaboration and leadership.

Golang, Java, Scala, Kotlin, Python, Node.js, Kubernetes, AWS, Cassandra, Kafka, Elasticsearch

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Staff Software Engineer - Core Experience

San Francisco or New York

$189k-$315k/yr OnsiteFull Time

Rippling: Unified platform managing workforce HR, IT, and finance operations

8+ YOE8+ years software engineering; backend systems; scalable architecture; ownership; collaboration; backend languages.

Python, Go, Java, SQL, NoSQL

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Senior Software Engineer - Core Communications Reliability

New York, New York, United States

OnsiteFull Time

Bloomberg: Delivers financial data, news, and software to global markets.

4+ YOE4+ years in software engineering; Python; distributed systems; reliability, observability, SLOs/SLIs/SLAs; collaboration; CS/engineering degree or equivalent experience.

Python, Kafka, Java, Apache Spark, Grafana, Humio, Amazon S3

2mo

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2mo

Senior Lead AI Engineer (AI Foundations, LLM Core and Agentic AI)

New York or San Francisco or McLean or Cambridge or San Jose

$251k-$286k/yr OnsiteFull Time

Capital OneNYSE: COF: Provides credit cards, auto loans, and retail banking services.

4+ YOEBachelor's or Master's in CS/AI/EE with 4–6+ years in AI/ML; strong Python/Java; cloud experience.

AWS, Huggingface, PyTorch, VectorDBs, Nemo Guardrails, Python, Go, Scala, Java, C++, C#, Golang

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Software Engineering Manager II, Core, Dev AI

New York, New York, United States

$207k-$300k/yr OnsiteFull Time

GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.

8+ YOE3+ MgmtBachelor’s degree or equivalent; 8+ years software development; 3+ years technical leadership; programming in Java/C++/Python; experience with Generative AI and large language models.

Java, C++, Python, Generative AI, VSCode, CLI

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Senior Algo Quant

New York, New York, United States

OnsiteFull Time

NewmarkNASDAQ: NMRK: Commercial real estate brokerage and property management services.

Strong understanding of data structures, algorithms, and latency-sensitive trading; software design patterns; testing methodologies; electronic trading platforms; Core Java with low-latency techniques; CI/CD; debugging and performance tuning; Unix/Linux; clean, maintainable code; ownership and delivery focus; mentoring juniors; benchmarking algorit...

Java, Git, Maven, Unix/Linux, Shell scripting, CI/CD, FIX protocol, OMS