Sr. Solutions Architect

Company Description Lumen Solutions Group Inc. is a technology consulting Services company based in Florida. We provide a wide array of experienced business and IT professionals supporting clients from solution design to implementation and support. We specialize in professional IT consulting services, IT Staffing, Business/IT Strategy, Business Process Blueprints, Enterprise Architecture, and Enterprise Transformation. Job Title- Sr. Solutions Architect Location- Washington, DC (Remote) Job Type- Contract Job Description 10+ years of progressive IT/technology experience with a foundation in hands-on engineering delivery - application development, systems integration, or data platform work - before moving into architecture; candidates who have only held advisory roles will not be competitive. 5+ years as a Solutions or Enterprise Architect with demonstrated ownership of complex, multi-system solutioning in rail, transit, airlines, or transportation operations; exposure to scheduling, dispatch, crew management, asset maintenance, and train control function as a connected operational ecosystem is a plus. Proven ability to perform structured business process analysis - process mapping, As-Is/To-Be modeling, gap analysis, workflow decomposition - not systems architecture in isolation; the work requires equal fluency in operational process and technical design. Deep command of integration architecture: event-driven patterns, REST/GraphQL APIs, pub/sub and streaming (Kafka or equivalent), and data exchange in operational contexts spanning OT/IT boundaries. Experience designing for 24/7 operational availability on cloud and hybrid platforms (AWS, Azure, or GCP); familiarity with the reliability, latency, and fault-tolerance requirements of safety-adjacent rail environments. Ability to lead technical solutioning for operational data pipelines - real-time streaming ingestion, event processing, and lakehouse patterns applied to train performance, delay causality, and asset health data. Demonstrated ability to produce rigorous, execution-grade architecture artifacts: solution design documents, integration maps, API contracts, non-functional requirement matrices, and Architecture Decision Records that engineering teams can build against without interpretation overhead. Direct engagement experience with operational stakeholders - dispatchers, controllers, planners, front-line supervisors - to ground architecture decisions in actual workflow context rather than idealized process models. Familiarity with AI/ML-enabled operations: predictive maintenance, anomaly detection, scheduling optimization, or computer vision inspection pipelines; experience with lakehouse architecture (Databricks, Delta Lake, Unity Catalog) applied to operational and engineering data is a strong differentiator. Prior contractor or consulting engagement model experience; able to deliver independently, manage scope, communicate proactively on blockers, and maintain artifact quality without close supervision - including support for RFP/RFQ technical inputs, vendor evaluations, and architecture governance participation. Lumen Solutions Group Inc is an equal opportunity employer. All qualified applicants will be considered for employment without regard to any legally protected status. Lumen Solutions Group, Inc.