Top Senior Java Engineer Jobs in NYC, NY

As a Market Data Sr. Java Developer, you'll build market data capabilities and services, interact with various teams, and maintain code quality while managing the software delivery lifecycle.

Lead development and maintenance of an e-trading rates derivatives platform. Design architecture, implement business logic and services, own features from requirements through rollout, fix bugs, build QA automation and frameworks, partner with business leaders, and recommend tools and processes to optimize engineering delivery.

Lead AI transformation of compliance technology within Aladdin by designing and deploying LLM/agentic AI solutions, RAG/vector search systems, and scalable Java-based distributed platforms. Partner with product, compliance, and engineering to build fault-tolerant, cloud-native systems, define AI roadmaps, and deliver next-gen compliance rule engines and automation at enterprise scale.

Build and maintain cloud-ready, low-latency trade and positions services for TAPE 2.0. Design scalable distributed systems, integrate client APIs (Java, C++, Python), use distributed caching and Kubernetes, contribute frontend work in Angular, and support CI/CD, monitoring, and documentation.

Join a small team to design and deliver high-quality, low-maintenance Java applications. Coach client teams on modern development practices, apply test-driven development, and pursue ongoing professional growth through training and mentorship.

Lead design and delivery of high-throughput, fault-tolerant backend systems for Aladdin. Build microservices, streaming architectures, and distributed applications; collaborate with product and global teams; apply test-driven development, perform code reviews, and provide production support while mentoring engineers and driving technical roadmap.

Develop and maintain applications using Java and related technologies, while also working with Angular JS and Node JS frameworks.

Leads the entire application lifecycle, translating requirements into solutions, designing, developing, testing, and implementing technology solutions aimed at improving operations.

The Senior Java Developer will design, develop, and implement custom software solutions in Agile teams, mentor juniors, and ensure product quality.

Architect, implement, and optimize live and on-demand streaming pipelines in Wowza. Design scalable transcoding and packaging workflows, debug performance issues, integrate native code via JNI, and serve as a streaming subject-matter expert across cross-functional projects.

The Senior Lead Data Engineer designs and develops technical solutions, leads a team of developers, and utilizes big data and cloud technologies to deliver robust solutions for Capital One.

As a Senior Software Engineer at Squarespace, you will build scalable backend services, write clean and efficient code, and contribute to architecture discussions while collaborating with cross-functional teams.

Optimize and scale blockchain node performance, design and implement core system plugins, collaborate with cross-functional teams, conduct performance testing and debugging, and stay current on blockchain and distributed systems technologies to maintain reliable infrastructure.

The Senior Java Engineer will design complex systems, optimize performance, maintain code quality, and ensure application reliability. Responsibilities include translating requirements into applications and troubleshooting issues.

The role involves improving Elasticsearch's distributed components, maintaining cluster coordination systems, and addressing complex issues to optimize performance and scalability.

Design, build, and maintain Java (11/17) Spring Boot microservices and responsive React front-ends. Implement RESTful APIs, ensure security, observability, and performance, write automated tests, contribute to CI/CD and cloud deployments, participate in architecture and Agile delivery, and maintain technical documentation.

Design, develop, and maintain high-performance Java microservices using Spring Boot. Implement threading/concurrency, fault-tolerance (Hystrix/circuit breakers), observability (SLI/SLO), and event-driven solutions with Kafka. Deploy and operate services on Kubernetes and AWS, mentor junior developers, and collaborate with cross-functional teams to deliver reliable, scalable features.

Lead modernization and migration of legacy Struts 1 applications to modern Java platforms. Design, develop, and maintain scalable Java 21 applications using Spring 6 and REST APIs, troubleshoot production issues, participate in code reviews, and collaborate with cross-functional teams to deliver high-quality software.

Lead reverse-engineering of TIBCO BW/MFT processes, document business rules, and reimplement them as modular Java/Spring Boot microservices. Migrate protocols to Kafka/RabbitMQ/REST, ensure data consistency, and perform performance testing to match legacy SLAs.

Design and build Java/J2EE solutions using Spring and APIs; develop webservices, DB schemas, PL/SQL and transactional SQL in DB2/Oracle; collaborate with architects, developers and DevOps to implement CI/CD (Jenkins, uDeploy), ensure code quality (Sonar), perform code reviews and testing, resolve technical roadblocks, and drive process improvements. Requires strong communication and teamwork.

Senior Java Engineer responsible for designing and delivering high-quality, low-maintenance software. Coach client teams on modern development practices, apply test-driven development, collaborate in small teams, and pursue continuous learning to improve scalable, maintainable applications.

Remote Senior Java Developer responsible for building Java web applications using JSP and Struts2/MVC, creating reports with Jasper or SSRS, and managing Linux application servers (load balancers, JBoss, Apache, WildFly).

The role involves design and development of multi-tier applications using Java and C++, requiring knowledge of Python and derivatives domain.

The role requires a senior developer with expertise in Java and C++, and knowledge of Python. Responsibilities include designing and developing multi-tier applications and handling regulatory projects.

Lead backend architecture and implementation for Java Spring microservices, validate and own AI-assisted code, mentor engineers, collaborate with product to deliver features, and drive technical excellence and scalable, test-covered systems.