What are the responsibilities and job description for the Sr Software Engineer position at System One?
Tittle: Sr. Software Engineer
Location: Strongsville, OH or Pittsburgh, PA
Work Mode : Hybrid (3days Office / 2days Remote)
Duration: Contract to Hire
Years Of Exp Required: 10 Years
Function of the Group: Payment Center team creates one stop shop for businesses to manage their payment activity.
Industry Background: Financial/Banking experience. Micro App experience is a major benefit
Job Responsibilities:
• Design, build, and maintain inner/orchestration microservices that integrate multiple backend systems (payments, accounts, vendors) to support Payment Center capabilities
• Develop and enhance API layers and service-to-service interactions, ensuring secure, scalable, and reliable data aggregation across systems
• Collaborate closely with the front-end Payment Center team and Business to build and integrate UI components (e.g., Payroll tile) and ensure seamless end-to-end user experiences
• Troubleshoot and optimize performance, resiliency, and fault tolerance across distributed services, including debugging production issues
• Participate in Agile ceremonies and cross-team coordination to align backend orchestration logic with business flows (ACH, Bill Pay, Payroll, etc.) and ensure timely delivery
Required Skills
• Strong experience building and integrating microservices (Spring Boot / Java preferred)
• 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)
• Experience with containerization and deployment (Docker, Kubernetes/OpenShift)
• Expertise in API design and integration patterns (REST, secure APIs, contract-first design)
• Familiarity with enterprise authentication/authorization patterns (CIAM, OAuth, JWT)
• Experience working with distributed systems, including resiliency, scaling, and fault tolerance
• Strong debugging and performance tuning skills across microservices
• UI development experience (Angular or similar) to support front-end integration—specifically for building and integrating UI components like the Payroll tile
Flex Skills/Nice to Have:
• Experience with financial services or payments platforms (billing, payroll, account servicing)
• Exposure to Payroll integrations (ADP or similar providers)
• Familiarity with enterprise data platforms (BDC, FNW, or similar transaction/data systems)
• Experience with CI/CD pipelines and DevOps practices
• Knowledge of feature toggles and rollout strategies for phased releases
• Experience working in Agile delivery models with cross-functional teams
• Understanding of UI/UX best practices for customer-facing applications
• Exposure to observability tools (Splunk, Dynatrace, or similar)
• Prior experience working in large-scale enterprise environments with multiple dependent systems
Ref: #404-IT Pittsburgh