$90K-130K a year
Design, develop, and maintain Java APIs and backend services while collaborating with cross-functional teams and mentoring junior developers.
5+ years of Java development experience with strong knowledge of RESTful APIs, microservices, Agile methodologies, and excellent problem-solving and communication skills.
Job Title: Senior Software Engineer - Contractor Company Overview: System One is a leading technology staffing and consulting firm dedicated to connecting top-tier IT professionals with innovative companies across the United States. With a strong presence in multiple key markets, we pride ourselves on fostering long-term partnerships and delivering exceptional talent to drive business success. Role Overview: As a Senior Software Engineer Contractor, you will play a critical role in designing and developing robust Java APIs that support enterprise-level applications. This hybrid role offers the opportunity to work closely with cross-functional teams to deliver scalable solutions that meet client needs. What You'll Do: - You will design, develop, and maintain high-quality Java APIs and backend services. - You will collaborate with product managers, architects, and other engineers to define technical requirements. - You will participate in code reviews to ensure code quality and adherence to best practices. - You will troubleshoot and resolve complex technical issues in a timely manner. - You will contribute to the continuous improvement of development processes and tools. - You will mentor junior developers and share knowledge within the team. - You will work in a hybrid environment, balancing remote and on-site collaboration. What You Bring: - You have 5+ years of professional experience in Java development, particularly with API design. - You possess strong knowledge of RESTful web services and microservices architecture. - You are proficient with development tools such as Git, Maven, and Jenkins. - You have experience working in Agile/Scrum environments. - You demonstrate excellent problem-solving skills and attention to detail. - You have strong communication skills and the ability to work effectively in a team. Bonus Points If You Have: - Experience with cloud platforms such as AWS or Azure. - Familiarity with containerization technologies like Docker and Kubernetes. - Knowledge of front-end technologies such as Angular or React. - Previous experience working in financial services or banking sectors. What We Offer: - We offer competitive contractor rates and flexible hybrid work arrangements. - We offer opportunities for professional growth and skill development. - We offer a collaborative and inclusive work environment. - We offer access to cutting-edge technologies and projects. - We offer support from a dedicated recruitment and HR team. Ready to Apply? To apply, please submit your resume and a brief cover letter highlighting your relevant experience to our recruitment team at System One. We look forward to connecting with you and exploring how you can contribute to our clients' success.
This job posting was last updated on 9/10/2025