Sr. Full Stack Developer (Java, React, Typescript)

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Sr. Full Stack Developer (Java, React, Typescript)

12 Months contract – hire

McLean , VA – On-site M-F

Interview Type: In Person

Must Have Qualifications:

• Candidates must have 5+ years of experience, with a strong emphasis on front end development (approximately 70%) using front end applications such as React and Typescript, complemented by back-end development (30%) using Java and Spring Boot.
• React
• Java and Spring Boot.
• Candidates should have experience supporting fixed income applications, or a broader fixed income background, and be comfortable working with financed focused users.
• Mortgage experience is a strong plus.

Job Description:

Financial Engineering:

Senior Software Developer (Specializing Financial Analysis Applications)

Position Overview

Key Responsibilities

• Frontend Development: Design and build responsive, performant UIs in React (with TypeScript preferred) that allow users to configure, run, and visualize results across multiple security types.
• Backend Development: Architect and develop scalable Spring Boot RESTful APIs and services that integrate with multiple upstream data sources and analytics systems.
• System Integration: Connect backend services to existing internal platforms to retrieve market data, run risk analytics, and surface results to end users.
• Code Quality & Testing: Write clean, maintainable code backed by comprehensive automated tests using JUnit and React Testing Library / Jest, with strong unit and integration coverage.
• Technical Debt & Continuous Improvement: Proactively identify and resolve defects, reduce technical debt, and champion software engineering best practices across the codebase.
• Collaboration & Delivery: Coordinate across the full stack — data, services, APIs, and infrastructure — to deliver end-to-end.
• Design & Code Reviews: Actively contribute to architecture discussions, pull request reviews, and technical documentation with a focus on thoughtful, scalable design.

Required Qualifications:

• 5+ years of professional software development experience, with strong proficiency in Java and the Spring Boot ecosystem (REST APIs, Spring Security, Spring Data JPA, etc.).
• 3+ years of hands-on React development experience, including component architecture, state management (e.g., Redux, Zustand, or React Query), and API integration.
• 2–3 years of experience with Git in a collaborative, team-based development workflow (branching strategies, PRs, code reviews).
• 1–2 years of experience with containerization and orchestration technologies (Docker, Kubernetes, or Podman).
• Experience with TypeScript and modern React tooling (Vite, Next.js, etc.).
• Solid experience with JUnit and/or other automated testing frameworks; commitment to high test coverage.
• Strong communication skills with the ability to bridge technical and business conversations.
• Demonstrated critical thinking, problem-solving ability.