Contract Full Stack Java Developer Jobs in Mason, OH

Job Title: Senior Java Developer (No C2C, W2 only with no sponsorship) Location: Evendale, Ohio Type: Direct Hire Compensation: $110,000 - $130,000 Hybrid – onsite Tue, Wed, Thr, remote Mon, Fri Responsibilities

• Work in a Scrum team, focusing on enhancing our current suite of applications and maintaining our software landscape to promote internal efficiencies, reduce risk, ensure compliance, and promote business agility and innovation.
• Collaborate with Business Analysts, Subject Matter Experts, and other team members to design new applications and perform modifications to current applications.
• Collaborate with the team and broader IT organization in introducing, architecting, and advancing automation practice(s) focusing on testing, building, and deployment.
• Lead and advise the evaluation and recommendation(s) of application software packages, application integration, testing tools, and full-stack technologies.
• Define and enforce system architecture standards, API contracts, service boundaries, and integration patterns across applications and services.
• Own technical design decisions including technology selection, service decomposition, data flow strategies, and cross-system integration approaches.
• Conduct architecture and design reviews for team deliverables, ensuring alignment with long-term platform direction and scalability requirements.
• Serve as the technical escalation point for complex design problems, providing guidance on trade-offs between performance, maintainability, and delivery speed.
• Mentor team members on design principles, architectural patterns, and engineering best practices.

• Comprehensive and demonstrable full-stack software development skills and experience utilizing modern and open-source technologies to build enterprise business applications (Java, React, and Go preferred).
• Extensive SQL experience and expertise (PL/SQL and Oracle technologies preferred).
• Must be comfortable working in and managing multiple system environments (Linux & Windows).
• Capability and willingness to learn new tools and technologies.
• 7+ years of progressive experience in software development, with at least 2 years in a Technical Lead, Architect, or Senior Role with design responsibilities.
• Bachelor’s Degree in computer science or equivalent technical field and/or equivalent demonstrable experience in an enterprise level professional setting.
• Proven ability to be flexible and motivated, work well both independently and as part of a team, and possessing the passion and aptitude for technical leadership.
• Ability to work collaboratively with other application development areas to define standards and manage change.
• Excellent oral and written communication skills.
• Able to communicate effectively with a diverse group of individuals with varying levels of technical understanding and varying skillsets.
• Exposure and professional experience with deploying modern web applications utilizing containers (Docker) and cloud technologies (Azure & AWS).
• Track record of leading technical design sessions, producing architecture documentation or ADRs, and guiding developers through design trade-offs.
• Ability to evaluate build-vs-buy decisions and present trade-off analyses to both technical and non-technical stakeholders.
• Experience establishing or contributing to engineering standards, code review practices, and development workflows for a team.
• Familiarity with architectural patterns such as event-driven design, microservice decomposition, or domain-driven design is preferred.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M- #LI-DH1 Ref: #861-Cincinnati-S1