Top Java Developer Jobs in NYC, NY

Develops, enhances, tests, and maintains enterprise Java applications and RESTful web services. Responsibilities include modernizing legacy systems, building Java EE/JEE applications, implementing authentication and authorization, optimizing PostgreSQL databases, supporting AWS environments and CI/CD pipelines, applying security and accessibility standards, and translating business requirements into application features. Collaborates with technical teams and stakeholders in a remote work environment.

Lead software engineering for secure, scalable, production-grade applications in an agile enterprise environment. Design complex solutions and architecture, develop Java microservices and REST APIs, improve reliability through automated testing and CI/CD, analyze system data, and build reusable components. Guide responsible adoption of AI-assisted engineering tools, coach team members on secure validation practices, troubleshoot complex issues, and deliver high-throughput distributed systems across cloud-native platforms.

Design, develop, test, deploy, and support scalable cloud-native applications using Java, Spring Boot, React, TypeScript, and Node.js. Build REST APIs, microservices, PostgreSQL data models, integrations, CI/CD pipelines, and containerized deployments. Improve application reliability, observability, security, performance, and scalability while troubleshooting production issues. Collaborate with Product, UX, QA, DevOps, Architecture, and engineering teams through design sessions, code reviews, planning, and client-facing workshops.

Design, build, and maintain highly available, performant data systems that record and process billions of market events daily. Drive architecture, support APIs and analytics, automate monitoring/alerting, generate reports, and collaborate with stakeholders to deliver scalable, reliable solutions for FX and UST trading data.

Lead full-stack development and modernization of cloud-based investment platforms supporting portfolio management and trading. Design secure APIs, user interfaces, AWS infrastructure, and CI/CD pipelines; oversee production operations, testing, releases, documentation, and code reviews. Partner with business teams, vendors, and global stakeholders to define solutions, troubleshoot issues, and improve reliability. Provide technical leadership, mentorship, governance, security assessments, and root-cause analysis across development teams and investment technology systems.

Leads full-stack development and modernization of cloud-based investment technology platforms. Designs APIs, user interfaces, AWS infrastructure, integrations, CI/CD pipelines, and production support processes. Oversees code reviews, testing, security, documentation, root-cause analysis, and operational improvements. Partners with investment, product, operations, vendors, and technology stakeholders to define requirements and deliver scalable solutions. Provides technical leadership, mentorship, governance, and delivery oversight across employees, contractors, and vendor teams.

Build enterprise workforce management software for forecasting, capacity planning, scheduling, adherence, intraday management, and operational reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven integrations, and PostgreSQL data models. Support cloud-native deployments, CI/CD, testing, performance optimization, production troubleshooting, and technical design. Integrate WFM capabilities with CX, ACD, HR, payroll, identity, and data platforms while collaborating with cross-functional and client stakeholders.

Develop and maintain scalable Java/Spring Boot backends and Angular frontends. Build REST APIs, messaging and caching solutions, write automated tests, conduct code reviews, troubleshoot issues, and participate throughout the software development lifecycle. Collaborate with analysts and QA teams while ensuring performance, accessibility, security, and code quality. The role also requires cloud, containerization, Agile, database, and AI-assisted development experience.

Develop core infrastructure and horizontally scalable APIs for Elasticsearch. Solve complex performance, concurrency, stability, and operational issues; improve observability and developer productivity through automation and AI-enabled workflows. Lead cross-team projects, design APIs, support difficult customer issues, and own investigations through resolution. Collaborate across distributed engineering teams while contributing to open-source projects and maintaining secure, performant, and reliable platform functionality.

Build and enhance production-grade full-stack applications using React, Java, and/or Python. Develop scalable microservices and RESTful services, resolve performance and architectural issues, and deliver high-throughput, low-latency systems in cloud environments. Collaborate in Agile teams, use modern development and CI/CD practices, apply AI-assisted development tools, and mentor engineers while owning implementation across the application stack.

Leads full-stack Java engineering and enterprise application modernization for BNY’s Data Solutions & Services team. Responsibilities include designing scalable applications, implementing AI-powered solutions with LLMs and vector databases, establishing engineering standards, leading technical discovery and architecture, developing automated tests, improving platform performance, mentoring engineers, and advising technology leadership. The role requires collaboration across product, operations, data, and security teams while balancing innovation with reliable delivery.

Leads full-stack engineering projects and developer teams building cloud-based, distributed microservices and customer-facing systems. Responsibilities include defining service boundaries, developing APIs and reusable frameworks, applying AWS and modern programming technologies, improving performance, reducing technical debt, setting engineering standards, mentoring engineers, and guiding Agile teams. The role also influences technology strategy, promotes operational excellence, and leverages emerging AI tooling and observability practices.

Build and lead development of Capital One Travel’s unified checkout and My Trips platform. Design scalable full-stack applications, distributed microservices, APIs, cloud-based solutions, and reusable frameworks using modern languages and AWS technologies. Provide technical leadership across Agile teams, establish engineering standards, mentor developers, improve performance, reduce technical debt, and influence long-term technology strategy.

Develop backend applications and microservices for a large-scale deposits platform. Build and maintain Java and Spring Boot services, implement distributed processing with Kafka, and deploy within cloud environments such as AWS or GCP. Participate in coding interviews requiring screen sharing, work a five-day schedule, provide on-call support every eight weeks, and assist with occasional evening production deployments.

Leads software engineering projects and developer teams building distributed microservices, full-stack systems, and cloud-based solutions for Capital One Travel. Responsibilities include architectural design, technical leadership, platform strategy, refactoring, performance optimization, regulatory support, mentoring, and collaboration with product managers and engineering teams. The role uses Java, Scala, AWS, modern databases, container orchestration, APIs, CI/CD, infrastructure as code, and observability practices.

Lead development of scalable platform software supporting BlackRock’s Aladdin investment operating system. Responsibilities include building Java systems, CI/CD pipelines, container platforms, distributed services, data and messaging capabilities, and highly available applications. The role provides technical leadership, manages project priorities, applies test-driven and Agile practices, supports production operations, collaborates on roadmaps, and contributes to recruiting and team culture.

Design, build, and optimize high-performance, low-latency Java services and protocols for exchange and matching-engine systems. The role includes modeling orders and accounts, developing automated testing and benchmarking strategies, profiling performance, diagnosing production issues, collaborating with clients and internal engineering teams, and supporting deployments. After six months, the engineer will independently own technical workstreams through production readiness while delivering observable, maintainable systems and communicating technical trade-offs effectively.

Lead backend architecture and implementation for Citi's FX eCommerce trading platform. Build high-performance, multithreaded Java services, integrate with product teams, resolve complex system issues, coach mid-level developers, and ensure resilient, low-latency, production-ready solutions that meet regulatory and risk standards.

Build enterprise workforce management software for forecasting, capacity planning, scheduling, adherence, intraday management, and reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, integrations, and PostgreSQL data models. Support cloud-native deployments, CI/CD, testing, performance optimization, production troubleshooting, and technical design. Collaborate with product, operations research, QA, DevOps, UX, and client stakeholders.

Develop and deploy Java applications using Spring Boot and Spring Batch. Design and integrate microservices, build secure and performant REST/OData APIs, optimize SQL queries and database designs, and maintain code quality through JUnit testing and quality tools.

Develop secure, scalable full-stack applications using Java, Spring Boot, microservices, REST APIs, AWS, Docker, and Kubernetes, while leading Angular frontend architecture and development. Build responsive interfaces with Angular, TypeScript, NgRx, RxJS, and Angular Material. Contribute across the software development lifecycle, including design, testing, automation, troubleshooting, and deployment. The role requires enterprise architecture experience, Agile collaboration, and mandatory fraud prevention domain expertise.

Build secure, scalable full-stack applications using Java, Spring Boot, microservices, REST APIs, AWS, and Angular. Develop responsive user interfaces, integrate APIs, implement authentication and authorization, design distributed architectures, and support testing, troubleshooting, and automation. The role requires mandatory fraud prevention domain experience and collaboration within Agile engineering teams.

Build and maintain AI-assisted full-stack platforms for manufacturing, spanning AWS infrastructure, Python Lambda services, Java microservices, agentic LLM workflows, and Angular interfaces. Develop event-driven architectures, APIs, retrieval and scoring systems, infrastructure as code, observability, CI/CD, and secure deployment strategies. Apply rigorous testing, specification-driven development, concurrency practices, and production reliability techniques across multi-repository systems. The role requires hands-on software development experience with enterprise server, storage, or networking products.

Design, build, and deploy secure, high-performance, scalable cloud-native applications supporting Ariba P2P. Work full-stack in Java using Spring Boot and the SAP BTP Cloud Foundry CAP (Java) model, applying resiliency, security, and performance best practices.

Develop and maintain Java Spring Boot services with multithreading and Spring Batch. Build OData/REST APIs, write high-coverage JUnit tests, and author SQL queries. Ensure robust exception handling and code quality; collaborate on automation and UI work where needed.