Top Senior Java Developer Jobs

Lead and mentor a software engineering team to design, build, and operate secure, scalable cloud-native applications using Java and Python. Drive architecture reviews, CI/CD automation, observability, AI-assisted engineering practices, and data governance while ensuring operational stability and compliance.

Lead full‑stack development of scalable, secure services and UI using Java, Python, and React. Build AI/agentic capabilities with Smart SDK, design data/search solutions (PostgreSQL, OpenSearch), drive cloud-native engineering on AWS with Terraform, improve SDLC via AI-assisted tooling, mentor engineers, and deliver operational reliability.

Lead technical design, build, and maintain secure, scalable software; drive adoption of AI-assisted engineering, automation, CI/CD, and cloud-native practices; mentor teams, evaluate vendors and SaaS, and translate business strategy into delivery roadmaps.

Lead an agile engineering team to design, build, and maintain secure, scalable Java Spring Boot microservices. Deliver production-quality code, drive architecture and vendor evaluations, mentor developers, improve operational stability, and promote best practices for testing, CI/CD, security, and cloud-native deployments in the financial services domain.

Lead an agile payments engineering team building secure, scalable Java/Spring microservices. Be hands-on (50% coding), perform design, code reviews, and debug. Drive adoption of enterprise AI-assisted development practices, ensure CI/CD, resiliency, operational stability, mentor engineers, evaluate vendors, and manage stakeholders to meet compliance and business SLAs.

Lead design and delivery of scalable Java microservices and cloud-native AWS solutions, build data pipelines (Databricks/Spark), drive CI/CD and automated testing, adopt AI-assisted engineering practices, mentor engineers, and collaborate with product and data teams to improve user experience and operational reliability.

Lead backend engineering for cloud-native, multi-cloud fintech products. Design scalable, reliable, and secure systems using domain modeling. Build testable, operable code, resolve production incidents, optimize performance and data access, and enable zero-downtime releases. Mentor teammates, drive technical direction, and continuously modernize technologies and patterns.

Lead a cross-functional agile team to design, build, test, and operate scalable, secure full‑stack applications. Implement microservices (Java/Spring Boot or Python), cloud-native architectures, RESTful APIs, and high-volume data processing with SQL/NoSQL. Drive code quality, automation/CI-CD, vendor evaluations, and engineering communities of practice while improving operational stability and observability.

Lead and contribute to design, develop, and maintain scalable Java/Spring Boot services on AWS. Drive adoption of enterprise-authorized AI-assisted engineering practices, ensure operational stability and monitoring (Prometheus/Grafana), troubleshoot complex issues, participate in architecture and code review, automate remediation, and mentor/lead software engineers.

Lead backend engineer responsible for designing, building, and operating scalable, secure microservices for equities broker-dealer and prime finance platforms. Integrate AI/ML and GenAI (LLMs, RAG, embeddings, vector DBs) into production, drive architecture decisions, ensure SDLC and operational stability, mentor teams on responsible AI use, and collaborate with product and operations to deliver high-volume, low-latency financial systems.

Lead technical design, development, and operational stability of asset and wealth management systems. Drive adoption and validation standards for enterprise-authorized AI-assisted engineering, set reference architectures across Java, React, Kafka, Oracle/Aurora, Airflow, and Spark, guide cloud deployments, automate remediation, and evaluate vendors and integration approaches.

Leads the design, development, support, and performance tuning of Java/J2EE web applications and backend systems. Provides technical guidance, mentors developers, interfaces with databases using SQL and PL/SQL, troubleshoots issues, participates in code reviews, and collaborates with business and IT stakeholders. The role spans the full software development lifecycle and may involve microservices, cloud services, CI/CD, automation, and financial data systems.

Leads the design, development, testing, and deployment of scalable Java applications and distributed systems for an indices prototyping platform. Responsibilities include building microservices, using AWS cloud services, implementing containerization, improving performance and reliability, developing user interfaces, fixing defects, maintaining code quality and automation, and mentoring junior engineers.

Develop and maintain Java-based applications for a US Government client. Build front-end features with JavaScript and CSS, enhance Apache Struts applications, troubleshoot defects, collaborate across teams, and follow federal security, documentation, and development standards.

Designs, develops, tests, deploys, and supports full-stack Java applications for a U.S. Government client. Builds Spring Boot services, Angular front ends, REST APIs, microservices, Oracle database integrations, and Azure cloud solutions. Participates in architecture discussions, code reviews, troubleshooting, and cross-functional delivery with QA, DevOps, UX, and product teams. The role is fully remote and contract-to-hire, with eligibility for a DoD Public Trust clearance required.

Lead and contribute to design, develop, test, and maintain secure, scalable Java-based enterprise applications. Drive architecture reviews, apply AI-assisted engineering practices, automate remediation, mentor teams, and promote reuse and operational stability across the SDLC.

Lead development of secure, scalable Java/Spring backend systems; design, implement, debug, and review code; drive adoption of AI-assisted engineering, CI/CD, event-driven architecture (Kafka), and operational resilience; lead technical evaluations and communities of practice.

Develop and enhance Citi’s Regulatory Reporting Hub using Java, J2EE, Spring, big data technologies, and JavaScript. Responsibilities include translating business requirements into technical solutions, designing architecture, implementing data reconciliation processes, defining testing strategies, managing UAT, supporting production, improving code and processes, and mentoring junior engineers. The role also involves stakeholder coordination, project status reporting, and delivering reliable regulatory and financial reporting applications.

Build and maintain a high-performance Order Management System supporting systematic investment strategies and millions of annual orders. Collaborate with traders, quantitative researchers, and operations across the full trading lifecycle, including equities, swaps, and futures. Develop Java microservices and web applications using event-driven architecture, support production systems, and improve scalability and robustness. The role requires strong Java, SQL, Linux, distributed systems, and agile engineering skills, with opportunities to work in front-office financial technology.

Design, develop, document, and unit test Java/JEE REST microservices and Angular web applications. Build complex SQL queries, perform data modeling, and work with relational databases and enterprise systems. Collaborate within a large Agile team, communicate with technical and nontechnical stakeholders, and deliver solutions in a fast-paced environment. The role requires five days per week onsite in Ashburn during the first year, followed by potential hybrid work.

Develop and maintain secure, scalable Java EE applications supporting NYC’s CITYTIME automated timekeeping system. Responsibilities include full software development lifecycle ownership, requirements collaboration, coding, testing, code reviews, performance optimization, production troubleshooting, technical documentation, and technology evaluation. The role requires Java and JEE expertise, MVC and ORM experience, web services and API development, SQL and relational database knowledge, Agile familiarity, and experience with build and version-control tools. Blaze Advisor rule-engine experience is preferred.

Own and lead backend engineering initiatives for financial platforms, designing scalable Java and Ruby distributed services, Kafka data streams, PostgreSQL databases, AI-enabled features, and React components. The role includes production operations, observability, testing, and collaboration with product, architecture, and engineering teams to deliver resilient software.

Lead full‑stack engineer responsible for designing, building, and operating secure, high‑quality React frontends and Java backends; championing engineering standards, AI‑assisted development practices, CI/CD automation, secure SDLC, testing strategy, and mentoring teams to ensure reliable, observable, and scalable production systems.

Develop and maintain cloud-based software supporting intelligence operations. Design scalable distributed systems, integrate and test software components, build modern React web applications using JavaScript, TypeScript, and Kotlin, and work with massive datasets using HBase, Accumulo, or BigTable. Produce technical documentation and operate in Linux/UNIX environments while collaborating with cross-functional teams on high-performance, secure solutions.

Develop and maintain Java-based web applications that automate data management and approvals for intelligence community data custodians. Design complex algorithms, ensure quality and performance, improve documentation and development processes, gather software requirements, and support installation and operational monitoring. The role uses Agile methods and technologies including Quarkus, PrimeFaces, SQL, PostgreSQL, and Elasticsearch.