Top Senior Java Developer Jobs

Develop and support a Java/J2EE web application hosted on AWS, implement customer-driven enhancements, and build integrations with front- and back-office systems. The role requires expertise in Java, Spring, SOAP and REST services, SQL Server, T-SQL, SSRS, JavaScript, jQuery, and CSS. Responsibilities include debugging, testing, application support, technical development, reporting, and collaboration within an Agile development team.

Leads Java development for front-office systems, including large-feed processing with multithreading. Designs and codes enterprise applications using Core Java, messaging, databases, web frameworks, Spring, Hibernate, SOA, and REST services. Requires strong relational database and SQL expertise, plus test-driven development using JUnit and Mockito.

Develop full-stack applications using Java EE and JavaScript frameworks such as React or Angular. Build REST web services, collaborate within an Agile development team, and potentially work with AWS. The role requires at least six years of Java development experience and a bachelor’s degree.

Build and scale low-latency ad-serving software handling billions of daily auctions. Responsibilities include developing data- and model-driven features, optimizing algorithms and architectures, reducing cloud costs, extending observability, supporting distributed infrastructure, participating in on-call rotations, and documenting systems and incident procedures.

Develop and maintain enterprise full-stack applications using Java, Spring Boot, Hibernate, ReactJS, JavaScript, databases, and web services. Coordinate on-site delivery, offshore engineering teams, sprint goals, technical handoffs, code reviews, CI/CD pipelines, testing, source control, and production troubleshooting across time zones.

Develop and architect scalable Java software for NinjaOne’s endpoint management platform. The role involves building high-availability services, leading technical initiatives, making architectural decisions, improving quality practices, collaborating cross-functionally, mentoring engineers, and addressing scalability, performance, and technical debt challenges.

Develop and scale backend patch-management software using Java and Kotlin for millions of endpoints. Implement enterprise software, design scalable systems, build REST services, work with relational databases and caching systems, and uphold rigorous testing and quality standards. Collaborate with AI workflow, server, platform, design, and product teams. React or Angular experience may support occasional frontend work.

Design and develop scalable, high-availability software for NinjaOne’s endpoint management platform. Build Java and Kotlin applications, implement enterprise design patterns, optimize systems operating at massive scale, and contribute reliable code to production products. Responsibilities include API and REST service development, relational database design, client-server development, caching systems, quality testing, and solving scalability challenges across cloud services supporting millions of endpoints.

Develop and deploy scalable enterprise applications using Java, Spring Boot, microservices, REST APIs, and React.js or Angular. Build responsive frontends, optimize application performance, participate in Agile ceremonies and code reviews, support CI/CD activities, and collaborate with distributed cross-functional teams.

Build enterprise workforce management software for forecasting, staffing, scheduling, adherence, intraday management, and operational reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, PostgreSQL data models, integrations, and cloud-native deployments. Support CI/CD, production troubleshooting, performance optimization, architecture discussions, code reviews, and stakeholder collaboration across product, QA, DevOps, UX, and operations.

Design, develop, test, deploy, and support scalable cloud-native Workforce Management, Customer Experience, and operational applications. Build Java and Spring Boot backend services, React and TypeScript frontends, REST APIs, microservices, PostgreSQL data models, and system integrations. Contribute to containerization, Jenkins CI/CD, observability, security, production troubleshooting, performance improvements, and cross-functional engineering collaboration.

Develop and support scalable cloud-native applications using Java, Spring Boot, React, TypeScript, Node.js, PostgreSQL, and microservices. Responsibilities include building REST APIs, integrations, CI/CD pipelines, containerized deployments, observability, automated testing, and production support. The engineer will collaborate with product, UX, QA, DevOps, architecture, and clients while improving application performance, resilience, and maintainability. Workforce Management, Customer Experience, contact center, cloud, messaging, and secure API experience are advantageous.

Develops, tests, maintains, and troubleshoots enterprise and government Java applications. Designs APIs, supports architecture and documentation, integrates Java and .NET technologies, and contributes to CI/CD automation. Collaborates with analysts, QA, administrators, and stakeholders while ensuring application security, performance, reliability, and compliance with government standards. Requires Java, Spring, database, API, and Microsoft technology experience in a structured, compliance-driven environment.

Design, develop, and maintain highly available, concurrent, fault-tolerant software for BlackRock’s ETF platform. Provide technical leadership across architecture and strategic roadmaps, collaborate with global cross-functional teams, manage stakeholders, and deliver scalable solutions. Responsibilities include testing, code reviews, risk mitigation, level-two support, automation, and continuous improvement. The role requires Java or Python development, microservices, APIs, databases, DevOps, and CI/CD experience, with financial technology experience preferred.

Develop and maintain enterprise Java applications involving messaging and transaction processing. Design REST microservices with Spring and JUnit, build Angular web applications, write complex SQL, perform data modeling, troubleshoot existing components, and participate throughout the software lifecycle. The role includes cloud development with AWS, containerization, CI/CD, Agile practices, architecture, integration testing, and mentoring junior developers. It requires on-site work in Ashburn four days weekly during the first year.

The Lead C# Web Developer will design and develop secure MVC applications, perform coding, testing, and debugging while enhancing web platforms and integrating with vendor systems.

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.

Designs and builds enterprise-scale full-stack Java applications using Spring Boot, React, Oracle, REST, GraphQL, microservices, Docker, and Kubernetes. Writes tested production code, supports agile delivery, resolves performance issues, and contributes to architecture and technical standards. The role also applies AI development tools, cloud-native practices, CI/CD automation, and collaborative engineering workflows.

Lead design and delivery of scalable, resilient distributed systems. Act as technical authority across teams, mentor engineers, drive architecture and CI/CD best practices, troubleshoot production issues, optimize performance, and enhance observability while writing production-grade Java.

Develop and maintain Java-focused backend libraries and services that ingest, transform, and standardize diverse data formats. Build Python components, optimize MongoDB services, administer Linux systems, upgrade servers, install packages, monitor services, and troubleshoot environments. Contribute to scalable architecture, data modeling, integration patterns, Git workflows, code reviews, and continuous improvement. The role is onsite, requires U.S. citizenship, and involves a Top Secret SCI with Polygraph clearance.

Senior Backend Engineer responsible for designing scalable Java Spring microservices, implementing features, resolving defects, and improving backend architecture. The role involves event-driven systems, relational and NoSQL databases, testing, code quality, mentoring engineers, technical leadership, and collaboration with product teams. Engineers will also validate AI-assisted code, promote AI development practices, and work with cloud-native tools across AWS, Docker, Kubernetes, and continuous delivery systems.

Develop and maintain React front ends and Java Spring Boot back-end services for a transportation-command modernization program. Responsibilities include building reusable components, integrating REST APIs, modernizing legacy applications, writing automated tests, troubleshooting performance and usability issues, participating in code reviews, supporting CI/CD deployments, and collaborating with analysts, designers, testers, and DevSecOps engineers. The role is fully remote and requires eligibility for a Secret clearance and an active IAT Level II certification.

Provides technical leadership for engineers building scalable cloud-native applications on AWS. Leads architecture, modernization, Spring Boot microservices, OpenSearch, CI/CD, observability, and infrastructure initiatives. Ensures security, scalability, performance, and reliability while mentoring engineers and improving development practices. Collaborates with product, architecture, platform, and business stakeholders, supports incident resolution, and drives DevOps, automation, and AI-assisted development.

Build software, data pipelines, dashboards, and automation for cloud cost visibility, infrastructure efficiency, reliability, engineering productivity, and financial accountability. Analyze workloads and billing data, implement AI- and analytics-enabled forecasting and anomaly detection, develop cloud-native services, and support capacity planning, cost allocation, and optimization. Collaborate with Engineering, Finance, Data, Platform, SRE, Architecture, and Product teams while testing, troubleshooting, documenting, and communicating recommendations and business value.

Designs and develops complex Java applications, microservices, and REST APIs; creates technical designs, leads code reviews, enforces coding standards, resolves production issues, improves performance and reliability, mentors developers, and collaborates with DevOps on deployment pipelines.