Tech Consultant - Senior Full-Stack Engineer

Tech Consultant – Senior Full-Stack Engineer Location: Arlington, VA, New York, NY and St. Louis, MO; Hybrid work model | Local candidates preferred. Overall Experience: 6+ Years Role Summary We are seeking an experienced Senior Full Stack Engineer to design, develop, and deliver scalable, secure, and high-performing enterprise applications. The ideal candidate should have strong hands-on expertise across backend and frontend technologies, Microservices, REST APIs, databases, and modern software engineering practices. The role requires close collaboration with architects, Product Owners, Business Analysts, QA, and DevOps teams while providing technical guidance and contributing to architecture, design, development, testing, and production delivery. Day to Day Job Duties Design, develop, test, and maintain end-to-end enterprise web applications. Develop scalable backend services using Java/Spring Boot or.NET/.NET Core. Build responsive and reusable user interfaces using React, Angular, JavaScript, or TypeScript. Design and develop REST APIs, Microservices, and enterprise system integrations. Participate in application architecture, technical design discussions, and solution reviews. Write clean, reusable, maintainable, and well-tested code following engineering best practices. Perform code reviews and provide technical guidance to development team members. Collaborate with Product Owners, Business Analysts, QA, and DevOps teams throughout the delivery lifecycle. Troubleshoot complex application and production issues and perform root cause analysis. Optimize applications for performance, scalability, security, and reliability. Develop unit and integration tests and support automated testing practices. Support CI/CD pipelines, deployments, production releases, and post-release activities. Participate in Agile/Scrum ceremonies, estimation, sprint planning, and continuous improvement initiatives. Basic Qualifications 6+ years of experience in Full Stack application development and enterprise software engineering. 5+ years of experience with Java/Spring Boot or C#/.NET Core, Microservices, and REST APIs. 4+ years of experience with React, Angular, JavaScript, or TypeScript. 3+ years of experience with SQL/NoSQL databases, cloud platforms, and CI/CD-based application delivery. Nice to Have Strong understanding of Microservices, distributed systems, and application design patterns. Experience with AWS, Azure, or Google Cloud Platform. Experience with Docker and Kubernetes. Knowledge of Kafka, RabbitMQ, or other event-driven/messaging technologies. Experience with Jenkins, GitHub Actions, GitLab CI, or Azure DevOps. Knowledge of SQL and NoSQL databases. Experience with unit testing and automated integration testing frameworks. Knowledge of application security and secure coding practices. Experience with observability tools such as Splunk, Dynatrace, Datadog, Prometheus, or Grafana. Experience mentoring junior developers and conducting code/design reviews. Experience working in Banking, Financial Services, Insurance, or other enterprise environments. Strong analytical, technical leadership, communication, and problem-solving skills. United Software Group