Full-Stack Engineer (Java/React/Mobile)

Quick Facts

• Role: Full-Stack Engineer (Java/React/Mobile)

• Contract length: 3–4 months, possible extension

• Work model: Hybrid (Buffalo, NY or Wilmington, DE)

Description

Design and build backend services with Java and Spring Boot, create user-facing web features with React, and implement native mobile features using SwiftUI (iOS) and Jetpack Compose (Android). Own end-to-end delivery from design through development, testing, and documentation, and guide the team through code reviews and technical decisions.

Responsibilities

• Architect and implement backend services and application data/logic using Java and Spring Boot

• Develop React-based web UI features

• Build native mobile features for iOS and Android (SwiftUI and Jetpack Compose)

• Lead end-to-end delivery of complex system components (design, development, testing, documentation)

• Mentor developers through code reviews and technical decision-making

• Collaborate with engineering teams and business stakeholders to translate requirements into solutions

• Write comprehensive documentation for maintainability and knowledge transfer

• Lead testing and quality assurance to ensure production-ready code

• Debug and solve problems across interconnected systems and multiple platforms

Requirements

• 6+ years of hands-on software development experience with solution design and architecture ability

• Strong proficiency in Java/Spring Boot microservices, React, and native mobile development (SwiftUI and/or Jetpack Compose)

• Experience mentoring developers and leading technical decisions through code reviews

• Excellent communication skills with the ability to present to technical and non-technical stakeholders

• Ability to work independently and take ownership of complex technical challenges

• Strong problem-solving skills for untangling interconnected systems across platforms

• Ability to manage multiple competing priorities and projects

• Experience in regulated environments such as banking is a plus

Benefits

• Pay range: $70–75+/hr

• Hybrid work location: Buffalo, NY or Wilmington, DE

• Contract duration: 3–4 months with possible extension