Title - Software Engineer Sr Location- Pittsburgh, PA/Cleveland, OH/Dallas, TX Must Have Experience with containerization and deployment (Docker, Kubernetes/OpenShift) Experience working with distributed systems, including resiliency, scaling, and fault tolerance Expertise in API design and integration patterns (REST, secure APIs, contract-first design) Familiarity with enterprise authentication/authorization patterns (CIAM, OAuth, JWT) Hands-on experience with backend service design for complex domains (APIs, orchestration, service-to-service communication) Solid understanding of event-driven architecture (Kafka or similar messaging platforms) Strong debugging and performance tuning skills across microservices Strong experience building and integrating microservices (Spring Boot / Java preferred) UI development experience (Angular or similar) to support front-end integration—specifically for building and integrating UI components like the Payroll tile Nice To Have Experience with CI/CD pipelines and DevOps practices Experience with financial services or payments platforms (billing, payroll, account servicing) Experience working in Agile delivery models with cross-functional teams Exposure to observability tools (Splunk, Dynatrace, or similar) Exposure to Payroll integrations (ADP or similar providers) Familiarity with enterprise data platforms (BDC, FNW, or similar transaction/data systems) Knowledge of feature toggles and rollout strategies for phased releases Prior experience working in large-scale enterprise environments with multiple dependent systems Understanding of UI/UX best practices for customer-facing applications

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#404-IT Pittsburgh System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services 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 full-time 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.