Senior Java Full-Stack Engineer – Hybrid NYC (12+ yrs)

MARICI Solutions GmbH; New York (NY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

MARICI Solutions GmbH in New York, NY is seeking a Java Full Stack Developer for an in-house Sincera project. The role combines frontend React work with robust Java backend development in a Hybrid NYC setting.

You will design and implement RESTful APIs, work with microservices, and ensure secure, scalable systems. Strong TypeScript, Node.js, Spring Boot, and SQL Server expertise are essential.

Qualifications

• 12+ years of experience in full stack development with strong proficiency across both frontend and backend technologies.
• Strong proficiency in React with deep understanding of core concepts including component lifecycle, hooks, context API, state management, and modern frontend tooling.
• Should have work experience in Nodejs, React, Type script skill set.
• Solid experience with TypeScript including type systems, generics, interfaces, and advanced patterns.
• Strong proficiency in Java with hands-on experience building production applications using NodeJs.
• Good understanding in Spring boot framework.
• In-depth experience with API design and integration — building RESTful APIs, integrating with multiple external systems, handling authentication protocols (OAuth, API keys, JWT), and managing data transformation across systems.
• Experience building and maintaining microservices architectures with well-defined service contracts, inter-service communication, and API documentation.
• Strong experience with SQL Server including complex queries, stored procedures, and performance optimization.
• Hands-on experience leveraging AI agents (e.g., Claude Code, Cursor) in day-to-day development for coding, testing, and documentation.
• Understanding of software design patterns, SOLID principles, and clean architecture practices.
• Experience with version control systems (Git) and CI/CD practices.

Skills

Full stack development

React

TypeScript

Java

RESTful APIs

Tools

Node.js

Spring Boot

SQL Server

Git

CI/CD

Job description

MARICI Solutions GmbH in New York, NY is seeking a Java Full Stack Developer for an in-house Sincera project. The role combines frontend React work with robust Java backend development in a Hybrid NYC setting.

You will design and implement RESTful APIs, work with microservices, and ensure secure, scalable systems. Strong TypeScript, Node.js, Spring Boot, and SQL Server expertise are essential.