Top Java Developer Jobs in NYC, NY

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.

Lead design, development, and delivery of frontend and backend web applications; provide technical architecture and leadership; collaborate across teams; implement Angular frontends with API-first backends; ensure scale, resilience, testing, and support; drive product roadmap, stakeholder management, and continuous improvement.

Lead development and modernization of a risk and pricing platform for equity derivatives, ensuring performance and collaborating with stakeholders.

Lead development of low-latency, scalable microservices for prime brokerage and equity finance. Design architectures, refactor legacy code, write high-quality Java, create RDBMS objects, implement distributed systems, build automated tests, leverage GenAI for productivity, and collaborate with product and users to deliver resilient, production-grade solutions.

As a Senior Software Engineer at Squarespace, you'll build scalable backend services, collaborate with teams, and contribute to design decisions. Responsibilities include creating efficient code and supporting high-traffic systems.

Design, develop, and maintain scalable backend services and APIs in Java. Lead technical discussions, collaborate across teams, and mentor junior engineers.

Lead the design and development of secure, high-performance Java applications in AWS, providing technical leadership and mentoring a team while collaborating with product organizations and optimizing CI/CD pipelines.

The Senior AWS/Java Developer will focus on full stack development, leading agile projects, ensuring quality software delivery, and mentoring junior developers while collaborating across teams.

Looking for a software engineer with Java expertise to develop crypto Lending systems. Requires strong analytical skills and problem-solving capabilities.

The Senior Software Engineer will design, develop, and support full-stack solutions, collaborating with Agile teams and leveraging various technologies to build cloud-based systems.

As a Junior Java Developer, you'll build applications and learn software development principles through training and on-the-job experience at mthree.

The position involves developing high-quality software for BlackRock's Aladdin platform, focusing on collaboration, innovation, and resilience in software systems, while addressing complex problems and ensuring code quality.

Design, develop, and deliver high-throughput, scalable, fault-tolerant Java backend services for Aladdin. Lead projects using Agile, collaborate across global teams, apply test-driven practices, ensure resilience through code reviews and testing, support production, and work with product and business stakeholders to define roadmaps.

Seeking an experienced Java Backend Engineer to design, develop, and maintain backend systems and APIs using modern Java technologies.

The role involves designing and implementing FXall's Trading System User Interface using Java/Swing, focusing on system design, multi-threading, and collaboration with traders.

Develop web scale applications, work with QA for testing, participate in project planning, estimate work scope, and review peers' work.

The Lead Java Developer will design, build, and operate large-scale trading platforms, focusing on low latency and cloud services. Responsibilities include development support, process automation, and team collaboration.

Design and implement AI workflows for Clear Street's trading platform. Collaborate with teams, create reusable libraries, and ensure model quality.

Lead and mentor a team building cloud-based, full-stack microservices and solutions. Drive technical direction, collaborate with product managers, and deliver scalable AWS-based systems using modern languages, container orchestration, and databases to meet regulatory and customer needs.

Lead architecture and implementation of Squarespace Business Email backend. Hands-on Java development, mentor engineers, drive reliability, scalability, and system evolution, and partner with cross-functional teams to deliver customer-facing email features.

The role involves developing core Java applications, using Spring frameworks, SQL for database management, and leveraging Hadoop technologies. Requires extensive experience in capital markets, multi-threading, and Unix commands.

The Core Java Developer will build applications in a Web Sphere environment, collaborate in Agile teams, and ensure high performance and security for applications.

Seeking a Java Engineer with TCP and multicast experience for data-centric projects, including data analytics and messaging.

The Java Developer will propose solutions for client requirements, with 4+ years in Java, 2 years in Spring, and SQL knowledge.

Lead and mentor a team of engineers to design, implement, and maintain scalable, enterprise-grade services. Drive architecture decisions, conduct code and architecture reviews, define testing strategies, collaborate cross-functionally, engage with clients on complex technical issues, and continuously improve development processes and tooling.