Senior Solution Architect – IT/OT & Application Migration.

Job Title: Senior Solution Architect – IT/OT & Application Migration.

Work Location: Houston, TX - Hybrid

Contract duration: Long term contract

Visa: USC/Only

Domain (Industry)          Oil and Gas

Detailed JD:

• Assess the acquired company’s application and OT landscape, including SCADA platforms, interfaces, data flows, infrastructure dependencies, identity and access, network connectivity, hosting, licensing, support models, and operational criticality.

• Define current-state, interim-state, and target-state architectures for the lift-and shift migration of business applications and SCADA systems into client environments.

• Develop application disposition and migration strategies, including rehost, replatform, retire, retain, replace, or remediate decisions, in alignment with business continuity and TSA constraints.

• Design end-to-end integration solutions covering applications, APIs, middleware, file transfers, data migration, infrastructure, cloud services, OT networks, SCADA interfaces, cybersecurity controls, monitoring, backup, disaster recovery, and operational support.

• Translate business, operational, regulatory, safety, and technical requirements into architecture artifacts, high-level and detailed designs, transition roadmaps, and implementation guidance using client enterprise standards and approved patterns.

• Identify architecture, cybersecurity, data, operational resilience, and migration risks; define mitigations and obtain review from the appropriate Client stakeholders and governance bodies.

• Ensure solution designs account for SCADA availability, segmentation, secure remote access, telemetry, alarming, historian connectivity, control-Centre interfaces, and safe cutover and rollback requirements.

• Maintain architecture decisions, dependencies, assumptions, compliance checklists, and traceability from requirements through implementation.

• Work with project stakeholders to develop delivery estimates and funding-stage estimates (C5, C3, and C1) using established tools and processes. Architecture Governance & Enterprise Alignment

• Partner with Portfolio, Enterprise, and foundation technology architects to align transition solutions with Client strategy, standards, reference architectures, and target-state roadmaps.

• Facilitate architecture discovery and decision-making across Client, the acquired company, TSA service providers, vendors, and delivery partners.

• Identify opportunities for standardization, reuse, modernization, simplification, and technical debt reduction without compromising TSA timelines or business and operational continuity.

• Prepare governance materials and present solutions involving new technologies, exceptions, or material risks to the Architecture Review Board (ARB), Technology Working Group (TWG), and other relevant review forums. Migration Delivery & TSA Execution

• Support project delivery teams throughout the implementation lifecycle.

• Provide technical leadership during implementation, testing, deployment, and transition to operations.

Mandatory skills:

• Bachelor's degree in computer science, Engineering, Information Systems, or related field.

• Minimum 7+ years of progressive IT experience, including 4+ years in solution architecture or senior technical leadership roles.

• Proven experience designing enterprise-scale solutions across multiple technology domains.

• Strong understanding of application architecture, cloud platforms, integration, data architecture, and security principles.

• Demonstrated success delivering complex technology initiatives in large enterprise environments

Desired skills

• Cloud Architecture (Azure)

• Application and Integration Architecture

• Operational technology and SCADA solutions

• Data and Information Architecture

• Security and Identity Management

• DevOps and CI/CD practices

• Infrastructure and Network Architecture

• API and Microservices Design

• DevOps and Automation

Preferred Qualifications

• TOGAF or other relevant architecture certifications.

• Experience in regulated industries such as energy, utilities, finance, or healthcare. Oil and Gas industry experience would be an asset.