Backend Developer Jobs in New Jersey, United States

Applications Development Technology Lead Analyst is a senior level individual contributor responsible for establishing and implementing new or revised application systems and programs, with a strong focus on hands‑on development and modern DevOps processes. This role requires deep technical expertise and leadership within the Technology team to drive high-quality, resilient, and efficiently delivered software solutions.

Senior backend developer and technical lead for Citigroup’s Applications Development team. Drives high‑quality, resilient software solutions with hands‑on Java, Mongo, Spring Boot, Kubernetes, and OpenShift.

Java BackEnd Developer at BTI Solutions will lead the design and implementation of core backend enhancements for the BYOD Enhancement Project, ensuring high availability and resilient fallback to WMP and Global BYOD APIs. The role focuses on building a local BYOD database with indexing, data freshness tracking, and retention policies, and developing hybrid query logic that prioritizes local lookups with configurable fallbacks.

Java Backend Developer at Citigroup responsible for designing, developing, and maintaining enterprise application systems. Leads feasibility studies, cost estimates, and IT planning.

Backend Java Developer Lead Analyst responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. Lead applications systems analysis and programming activities, partner with multiple management teams, resolve high impact problems, provide expertise in Java and Spring framework, develop standards for coding, testing, debugging, and implementation, serve as advisor to mid-level developers, assess risk and ensure compliance.

Senior Java Backend Developer at BBH builds scalable, high‑performance Java applications for reporting infrastructure. Leads design, development, code review, and mentorship.

Join Comcast’s Identity Management team as a Java Backend Developer focused on building secure, scalable, cloud‑based services. Design, develop, and maintain high‑complexity Java web services using Spring Boot, SOAP/REST/GraphQL, and Cloud Foundry on AWS. Create detailed design documents, perform unit and system testing, and debug production incidents.

Lead Java Backend Developer on the Stress Testing Team at Citigroup, building enterprise‑grade applications that compute risk metrics for regulatory compliance. The role leads engineering teams, sets architecture and best‑practice processes, owns critical work streams, and collaborates with risk, finance, and regulator stakeholders.

Staff Software Development Engineer responsible for designing, coding, and deploying Java backend services for CVS Retail Pharmacy systems. Leads architecture, collaborates with cross‑functional teams, ensures high performance, and mentors junior engineers.

Senior Backend Lead Developer at Citigroup drives application system design and development. Leads analysis, architecture, and coding for core Java, Spring Boot, and microservices solutions.

Software Development Team at Delan Associates builds scalable backend services and responsive front‑end applications. The Senior Java Backend Developer Lead designs, develops, and maintains Java/Spring Boot microservices and creates Angular UI components, collaborating with QA, DevOps, and business stakeholders.

ARPA-H Agentic AI Platforms team at Booz Allen Hamilton builds next‑generation agentic AI to accelerate research, decision‑making, and product shipping at scale. As a Senior Software Development Engineer you will own backend infrastructure on Azure, design LLM orchestration, manage data pipelines, authentication, CI/CD, cost economics, and observability for multi‑agent systems.

Exiger AI Platform team builds SaaS solutions that combat human trafficking, money laundering, and sanctions compliance. The Backend Engineer develops Java-based software, refines requirements, participates in design reviews, and ensures high‑quality deliverables within an agile, hybrid environment.

Senior Backend Engineer - Python at BlackRock focuses on building and deploying sophisticated algorithms to manage and rebalance SMAs for high-volume retail and institutional portfolios. The role requires strong analytical and quantitative skills, expertise in Python and modern OOP languages, and experience with relational databases, SQL, and Kubernetes.

Backend Capability team at CVS Health drives the backend platform, API ecosystem, and third‑party integration layer for its SaaS health suite. The role defines API standards, steers a scalable event‑driven microservices architecture, and leads integration strategy with EHR/EMR systems and emerging AI model APIs.

AI Team at Noom US builds backend systems that power AI and agentic initiatives for health plans and employers. The Lead Backend Engineer owns 80% of engineering work, guiding a small offshore team and shaping scalable Java/Kotlin services.

Backend Engineer focuses on building and deploying algorithms to manage and rebalance SMAs, learning new systems quickly, designing advanced data handling with relational databases and APIs, evaluating emerging technologies, leading process improvement projects, writing maintainable code, and mentoring junior team members.

SS&C Technologies seeks a Senior Software Engineer focused on backend development, data ingestion, and transformation pipelines. The role builds scalable data solutions, designs and maintains RESTful APIs, and collaborates with cross‑functional teams to ensure reliable data flows.

Principal Python Backend Engineer at Fidelity Technology Group, LLC. The role builds the core AI/ML services platform, designing clean abstractions over vector databases, building resilient ingestion pipelines, and shipping developer-friendly APIs and SDKs for enterprise-scale agent and tool development. The team operates across multiple U.S. locations, delivering high-performance, production-grade Python systems in Kubernetes and local playground environments.