Infrastructure Technical Architect (OCI)

Tata Consultancy Services; Greater London; On-site; GBP 95,000 - 130,000; Full time

Benefits offered by this job

Pension

Health care

Training resources

Discounts within Tata network

Job summary

Tata Consultancy Services (TCS) UK&I is seeking an experienced OCI Infrastructure Architect to shape a large-scale transformation, defining target-state cloud architecture, landing zones, security, and network topology for Oracle workloads.

You will collaborate with enterprise architects, security, and platform teams to deliver a governance-aligned OCI foundation for enterprise applications and integrations.

Qualifications

• 12+ years of experience in infrastructure or cloud architecture
• Deep knowledge of Oracle Cloud Infrastructure (OCI) services and deployments
• Experience in enterprise cloud transformation programs and landing zone design
• Strong understanding of hybrid cloud architectures and on‑prem connectivity
• Experience defining OCI tenancy, compartments, policies, and governance frameworks
• Experience in IAM, security baselines, and data protection controls
• Certification: OCI Architect Professional or equivalent
• TOGAF, CISSP, CCSP or similar certifications

Responsibilities

• Define target-state OCI architecture for a large transformation program
• Design and govern landing zones, security model, and network topology
• Produce High/Low-Level Design inputs and infrastructure blueprints
• Collaborate with security, application and data teams for requirements
• Ensure compliance with NHS DSPT, UK GDPR, and public sector security standards
• Define migration readiness strategies and risk tracing
• Drive architecture governance and design decisions with review boards
• Provide OCI platform designs supporting Oracle Fusion and EDI integrations

Skills

OCI architecture

Cloud networking

Security design

Hybrid cloud

Governance

Observability

Architecture governance

Stakeholder management

CI/CD integration

Education

OCI Architect Professional certification

TOGAF / CISSP / CCSP

Tools

Terraform

OCI Resource Manager

CI/CD tooling

Logging/Monitoring tools

Job description

Careers at TCS: It means more

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 Oracle Cloud Infrastructure (OCI) Infrastructure Architect to support a large-scale transformation programme by defining the target-state cloud architecture, landing zone, security model, network topology, environment strategy, and infrastructure readiness for Oracle workloads.

The architect will work closely with enterprise architects, security teams, application owners, infrastructure teams, and programme stakeholders to design a secure, scalable, resilient, and governance-aligned OCI foundation for enterprise applications, integrations, analytics, and platform services.

This role is focused on the pre-implementation phase only, including assessment, architecture design, sizing strategy, environment planning, security and network blueprinting, migration readiness planning, DR strategy definition, and governance alignment before execution begins.

Experience designing cloud platforms compliant with NHS DSPT, Cyber Essentials, UK GDPR, NCSC guidance and public sector security standards.

Your responsibilities:

Define the target-state OCI architecture for the transformation programme, including compute, storage, networking, identity, security, and platform services.

• Conduct current-state assessment and fitment analysis for existing infrastructure, hosting landscape, dependencies, and cloud readiness.
• Prepare and own High-Level Design (HLD), Low-Level Design inputs, architecture principles, and infrastructure blueprints.
• Designing the OCI landing zone includes tenancy structure, compartments, tagging strategy, policies, guardrails, and governance controls.
• Define network architecture including VCN design, subnets, DRG, Fast Connect/VPN, routing, segmentation, DNS, and connectivity with on-prem / third-party environments.
• Establish security architecture including IAM model, federation/SSO approach, key management, secret handling, bastion strategy, logging, monitoring, and security baselines.
• Define environment strategy for non-production and production landscapes, capacity planning, HA/DR architecture, backup approach, and resilience requirements.
• Collaborate with application, database, middleware, integration, and security teams to ensure OCI design supports business and technical requirements.
• Experience designing hybrid OCI infrastructure architectures, identity federation, network integration, and cross-cloud security controls.
• Define a secure, governance-aligned OCI platform capable of supporting Oracle Fusion, OIC/OICS, API-led integration, hybrid cloud connectivity, EDI integration, NHS security and compliance requirements, and enterprise-scale operational resilience.
• Define migration readiness strategies including workload classification, dependency mapping, sizing assumptions, deployment approach, and transition prerequisites.
• Support architecture governance by tracking risks, assumptions, dependencies, standards, and design decisions for programme milestones and stakeholder approvals.

Your Profile

Essential skills/knowledge/experience:

• 12+ years of experience in infrastructure architecture, cloud architecture, or enterprise platform design
• Strong firsthand expertise in Oracle Cloud Infrastructure (OCI) architecture and foundational services
• Deep knowledge of OCI networking, IAM, security, compute, storage, backup, monitoring, and resilience design
• Proven experience in enterprise cloud transformation programs, landing zone design, and platform standardization
• Strong understanding of hybrid cloud architecture, on-premises connectivity, segmentation, and secure enterprise integration patterns
• Experience in defining OCI tenancy, compartments, policies, tags, quotas, and governance frameworks.
• Expertise in HA/DR planning, environment strategy, performance sizing, and non-functional architecture requirements
• Familiarity with databases, middleware, ERP, integration, and application hosting requirements on OCI
• Exposure to migration assessment, workload discovery, dependency analysis, and cloud readiness planning
• Strong stakeholder management, architecture governance, workshop facilitation, and documentation skills
• Experience defining Infrastructure as Code (Terraform/OCI Resource Manager), landing-zone automation, policy-as-code, CI/CD integration, and cloud platform deployment standards.
• Experience defining observability architecture, logging, monitoring, SIEM integration, operational readiness, and supporting operating models.
• Experience presenting designs to Architecture Review Boards, Technical Design Authorities, and governance forums.
• Experience designing OCI infrastructure supporting Oracle Fusion, Oracle Integration Cloud (OIC/OICS), middleware, EDI integration APIs, and hybrid enterprise integrations.
• Experience designing cloud platforms aligned with enterprise security standards, regulatory requirements, data protection controls, and security architecture best practices.
• Excellent Problem-solving and analytical skills, with the ability to architect complex solutions and troubleshooting technical issues.
• Effective communication and people skills, with the ability to communicate effectively with technical and non-technical stakeholders.
• Oracle Cloud Infrastructure Architect Professional certification or equivalent OCI certifications.
• TOGAF, CISSP, CCSP, Azure Architect, or other relevant architecture/security certifications.
• Experience with migration assessments, application rationalisation, cloud adoption frameworks, and workload modernisation initiatives.

Rewards & Benefits (Default)

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.

Beware of Fraudulent offers

This is to notify you that TCS does not ask for any sort of payment or security deposit from candidates at any stage of the recruitment process. The firm never sends out job offers from free internet email services like Gmail, Yahoo Mail, and so on. TCS has not authorised any third-party company to collect money on their behalf. As a vigilant job seeker, beware of fraudulent recruitment activity and protect your interests! You can write to [e-mail] to report any fraudulent activity.

Due to the high volume of applications, we will be unable to contact each applicant individually on the status of their application. If you have not received a direct response within 30 days, then it should be deemed unsuccessful on this occasion.