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Lead Java Full Stack Developer

Cynet SystemsBoston, MA🇺🇸United StatesPosted Oct 2, 2026

Why This Role Stands Out

This hybrid Lead Java Full Stack Developer role offers a competitive hourly rate and the chance to build impactful, cloud-native solutions using cutting-edge technologies like Java 21+, Angular 19+, and AI-assisted development tools. You'll thrive here if you have strong backend and frontend expertise, a passion for leadership, and enjoy collaborating in an Agile environment. Apply now to elevate your career with this exciting opportunity!

Quick Overview

Salary
$46 - $51/hr
Seniority
Mid Senior
Work mode
Hybrid
Location
Boston, MA, United States
Posted
4 days ago
DockerMicroservicesRxJSSpringSpring BootSOC 2AgileAngularGitJUnitJavaKafka

Job Description

We are looking for Lead Java Full Stack Developer for our client in Boston, MA

Job Title: Lead Java Full Stack Developer

Job Location: Boston, MA

Job Type: Contract

Pay Range: $46.00hr - $51.00hr

Job Overview:

We are seeking an experienced Java Full Stack Lead Developer to design, develop, and maintain scalable enterprise applications. This hands-on role requires strong backend and frontend development expertise, leadership capabilities, and experience building cloud-native, event-driven solutions.

Key Responsibilities:

  • Design, develop, and maintain Java-based enterprise applications.
  • Build and support microservices using Spring Boot.
  • Develop and deploy containerized applications using Docker.
  • Implement event-driven architectures leveraging Kafka and MQ.
  • Collaborate with cross-functional teams to deliver high-quality software solutions.
  • Optimize application performance, scalability, and security.
  • Follow Agile development practices, code reviews, testing, and documentation standards.

Required Skills:

  • 8+ years of hands-on Java development experience (Java 21+ preferred).
  • Strong experience with Spring Boot and RESTful microservices.
  • Frontend development expertise with Angular 19+ and RxJS.
  • Experience using AI-assisted development tools such as GitHub Copilot or Windsurf.
  • Hands-on experience with Docker and cloud-native environments.
  • Strong knowledge of Kafka, MQ, and event-driven architectures.
  • Experience with relational and NoSQL databases.
  • Proficiency with Git and Agile methodologies.
  • Strong troubleshooting, debugging, and problem-solving skills.

Preferred Qualifications:

  • Experience with CI/CD pipelines and DevOps practices.
  • Knowledge of JUnit, Mockito, and automated testing frameworks.

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Benefits
Our Benefits Include:
  • Medical, Dental, and Vision Insurance
  • 401(k) Retirement Plan
  • Health Savings Account (HSA)
  • Disability Insurance (Short-Term and Long-Term)
  • Life and AD&D Insurance
  • Paid Sick Leave (where required by applicable state or local law)
  • Supplemental Insurance Plans
  • Identity Theft Protection
  • Pet Insurance
  • Employee Wellness Programs
  • Employee Assistance Program (EAP)
  • Career Growth and Professional Development Opportunities
Disclaimer: Benefits eligibility, accrual rates, and usage limits may vary based on employment status, length of service, and work location. Paid Sick Leave is provided in strict accordance with applicable state and municipal mandates. Cynet Systems Inc. reserves the right to modify, amend, or terminate any benefit plans at any time in accordance with applicable laws.

About Cynet Systems

Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading technology staffing and workforce solutions company serving Fortune 500 companies, government agencies, and enterprise organizations across the United States and Canada. We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and professional staffing, powered by a high-performing recruitment engine operating across North America and Asia.
As a nationally and locally certified Minority Business Enterprise (MBE), Cynet Systems is committed to helping organizations build high-performing teams while empowering professionals to grow rewarding careers. Our organization is certified to ISO 9001, ISO 14001, ISO 27001, and SOC 2 Type II standards, reflecting our commitment to quality, security, operational excellence, and customer success.

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