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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Engineer - **Company:** Opportunity Staffing - **Location:** McLean, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Java (Programming Language), Multitier Architecture, Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Automation of Tests, Cloud Engineering, Code Review, Information Systems, Continuous Integration, Data Security, Relational Databases, Software Debugging, Software Design Patterns, Distributed Systems, Enterprise Messaging Systems, Modular Design, MongoDB, Performance Tuning, Message Oriented Middleware, Secure Coding, Software Engineering, SQL Databases, Systems Integration, Enterprise Application Integration, Data Logging, Cloud Platform System, Spring-boot, Software Security, Technical Debt, Backend, Event Driven Architecture, Containerization, Kubernetes, Information Technology, Data Management, Api Design, Restful APIs, Serverless Computing, Microservices - **Published:** September 11, 2026 - **Apply:** https://www.thejobnetwork.com/job/d9c552c4-e921-4aaa-898c-784dd90f2a38/senior-backend-engineer-java-aws-kubernetes ## About the Role * 8+ years of related software engineering experience with strong hands-on backend development expertise in enterprise environments. * Hands-on expertise with Java, Spring Boot, REST APIs, microservices architecture, AWS, and event-driven distributed systems (required). * Kubernetes experience is mandatory. * Strong experience with MongoDB, AMQ (or similar messaging platforms), CI/CD pipelines, automated testing frameworks, and SQL/relational databases. * Demonstrated experience delivering complex backend initiatives across microservices, APIs, messaging, integration services, data platforms, and cloud-native deployments. * Strong background in API design, data modeling, event-driven architecture, asynchronous messaging, enterprise integration patterns, application security, performance tuning, and resiliency. * Experience applying software engineering standards (clean architecture, secure coding, automated testing, peer reviews, observability, production readiness). * Proven ability to evaluate technical options, contribute to architecture discussions, independently implement solutions, and create proofs of concept. * Experience supporting production applications (incident triage, debugging, root-cause analysis, monitoring, alerting). * Strong individual contributor mindset with ownership of complex deliverables and informal mentoring of peers. * Some hands-on use of AI for software engineering practices. * Ability to work on-site in McLean, VA. * Must be legally authorized to work in the United States without sponsorship now or in the future., * Experience in the mortgage, housing finance, or broader financial services industry. * Advanced degree in Computer Science, Information Systems, or a related technical discipline. * Experience with compliance, auditability, and regulated-environment delivery practices. ## Description Job DescriptionJob Title: Senior Backend Engineer - Java, AWS & Kubernetes Location: McLean, VA (On-site) Employment Type: Contract (W2 through ZipStaff - No C2C or 1099) About the OpportunityZipStaff is seeking a highly skilled Senior Backend Engineer to design, build, and support scalable Multifamily application platforms and cloud-native services for a leading housing finance organization. In this role, you will be a strong individual contributor focused on hands-on engineering across Java-based microservices, event-driven distributed systems, APIs, MongoDB, AMQ, Kubernetes, AWS, and CI/CD automation. You will deliver secure, resilient, observable, and production-grade backend capabilities that support critical business processes across loan acquisition, asset management, securitization, risk, and portfolio operations. What You'll Do: * Design, develop, test, deploy, and support backend application capabilities, including Java-based microservices, REST APIs, event-driven distributed services, AMQ-based messaging integrations, data access layers, and platform modernization components. * Build scalable, secure, resilient, observable, and maintainable backend services using modern software design patterns and cloud-native practices. * Collaborate closely with Product Owners, architects, business stakeholders, and cross-functional technology teams to clarify requirements, align on technical approaches, manage dependencies, and deliver business outcomes. * Build and enhance backend services using Java, Spring Boot, REST APIs, microservices architecture, event-driven design patterns, AMQ messaging, MongoDB, relational databases, Kubernetes, AWS, CI/CD pipelines, containerization, and automated testing frameworks. * Create proofs of concept, demos, and prototypes to evaluate emerging technologies and accelerate adoption of modern engineering patterns. * Follow and strengthen software engineering standards, including clean code, scalable design, code reviews, automated testing, deployment discipline, application security, observability, documentation, and operational readiness. * Ensure backend solutions meet compliance, auditability, security, resiliency, performance, and production support requirements. * Support production operations through incident triage, root-cause analysis, monitoring, logging, alerting, recovery practices, and continuous reliability improvement. * Independently solve complex technical problems, improve existing codebases, reduce technical debt, and help establish reusable backend engineering patterns. * Promote a culture of ownership, collaboration, continuous improvement, and engineering excellence. ## Related Videos - [API Design - Getting Started](https://www.wearedevelopers.com/videos/33-api-design-getting-started) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) - [40 Minutes to Build a Serverless COVID-19 REST and GraphQL APIs](https://www.wearedevelopers.com/videos/208-40-minutes-to-build-a-serverless-covid-19-rest-and-graphql-apis) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Rest API Antipatterns](https://www.wearedevelopers.com/videos/100208-rest-api-antipatterns) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)