Lead Technical Architect (OIC, OCI)

TCS is a purpose-led transformation company, built on belief. We do not just help businesses to transform through technology. We support them in making a meaningful difference to the people and communities they serve - our clients include some of the biggest brands in the UK and worldwide. For you, it means more to make an impact that matters, through challenging projects which demand ambitious innovation and thought leadership.

The Role

We are seeking an experienced Lead Technical Architect (OIC, OCI) to support a large-scale transformation program by defining the target-state integration architecture, cloud platform architecture, security framework, deployment topology, and technical design principles for Oracle-based enterprise solutions.

The architect will work with enterprise architects, application owners, infrastructure teams, security teams, business process leads, and delivery leadership to establish a scalable, secure, resilient, and governance-aligned technical foundation for Oracle Fusion, surrounding applications, enterprise integrations, and cloud-hosted services.

This role is strictly focused on the pre-implementation phase, including current-state assessment, solution blueprinting, integration architecture design, OCI platform design, connectivity planning, environment strategy, security architecture, non-functional design, migration readiness, & governance alignment.

Key responsibilities:

• Define the target-state technical architecture covering Oracle Integration Cloud (OIC), Oracle Cloud Infrastructure (OCI), Oracle Fusion integrations, middleware patterns, and enterprise connectivity
• Conduct current-state technical assessment of applications, interfaces, hosting landscape, integration dependencies, and cloud readiness
• Prepare and own architecture blueprints, technical solution designs, integration principles, environment strategy, and non-functional architecture artifacts
• Define the enterprise integration architecture including synchronous/asynchronous patterns, event-driven design, API strategy, file-based integrations, orchestration patterns, and error-handling framework
• Design the OIC architecture and deployment model, including connectivity agents, integration instances, security model, monitoring considerations, and integration governance standards
• Define the OCI architecture including landing zone alignment, network topology, connectivity, security foundations, environment segmentation, and resilience considerations for integration and platform components
• Establish security and access architecture including identity integration, role-based access, secrets management, certificate strategy, encryption principles, logging, and auditability requirements
• Collaborate with business and technology teams to define end-to-end technical dependencies across Oracle Fusion, third-party systems, legacy platforms, SaaS applications, databases, and external partner ecosystems
• Define migration and technical readiness strategy including interface rationalization, dependency mapping, workload placement considerations, and design assumptions prior to build
• Support architecture governance by tracking risks, assumptions, constraints, standards, and key technical decisions for stakeholder and design authority approvals

Your Profile - Essential skills/knowledge/experience:

• 15+ years of experience in technical architecture, enterprise integration, middleware, and cloud platform design
• Strong hands-on expertise in Oracle Integration Cloud (OIC) architecture, integration patterns, and enterprise integration design
• Strong expertise in Oracle Cloud Infrastructure (OCI) architecture including networking, IAM, security, connectivity, and environment design
• Proven experience in large-scale transformation programs involving Oracle Fusion, enterprise integrations, and cloud modernization
• Deep understanding of integration architecture patterns such as APIs, orchestration, event-based integration, file-based interfaces, and hybrid connectivity models
• Strong knowledge of OCI network architecture, landing zone principles, security controls, HA/DR considerations, and governance frameworks
• Expertise in defining technical solution blueprints, HLDs, NFRs, architecture decision logs, and technical standards
• Familiarity with Oracle Fusion application architecture, third-party application integrations, data exchange patterns, and enterprise middleware ecosystems
• Exposure to migration readiness assessment, interface inventory rationalization, dependency analysis, and cloud adoption planning
• Strong stakeholder engagement, workshop facilitation, architecture governance, and documentation skills

TCS is consistently voted a Top Employer in the UK and globally. Our competitive salary packages feature pension, health care, life assurance, laptop, phone, access to extensive training resources and discounts within the larger Tata network. We offer health & wellness initiatives and sports events; we are the proud sponsor of the London Marathon.

Diversity, Inclusion and Wellbeing

Tata Consultancy Services UK&I is committed to meeting the accessibility needs of all individuals in accordance with the UK Equality Act 2010 and the UK Human Rights Act 1998.

We welcome and embrace diversity in race, nationality, ethnicity, disability, neurodiversity, gender identity, age, physical ability, gender reassignment, sexual orientation. We are a disability inclusive employer and encourage disabled people to apply for this role.

As a Disability Confident Employer, we offer an interview to applicants with disabilities or long-term conditions who meet the minimum criteria for the role. Please email us at if you would like to opt in.

If you are an applicant who needs any adjustments to the application process or interview, please contact us at with the subject line: "Adjustment Request" or call TCS London Office / to request an adjustment. We welcome requests prior to you completing the application and at any stage of the recruitment process.