Data Migration Specialist

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Role: SME Data Migration Architect

Job Type: Permanent

Location: UK

Number of hours: 40 hours per week – full time

Ready to utilise your experience and expertise as an SME Data Migration Architect?

We have an exciting role for you - SME Data Migration Architect!

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.

• Collaborate within a dynamic team environment.
• Tackle challenges with a proactive mindset.
• Commit to excellence and deliver impactful results.

As an SME Data Migration Architect, you will lead the end‑to‑end migration strategy, design, and execution for transitioning data from legacy applications to the Kraken platform. You will ensure high‑quality, reconciled, audit‑ready data using proven ETL, profiling, ring fencing, and reconciliation frameworks. This role requires close collaboration with technical teams, business SMEs, Kraken specialists, QA, and integration teams to deliver a controlled, cohort‑based migration.

• Define the overall data migration architecture covering extraction, transformation, validation, ring fencing, reconciliation, and audit control points.
• Design a cohort‑based migration approach ensuring zero double handling, contract reconstruction, and phased parallel‑run readiness.
• Establish the canonical data model to normalise legacy and Kraken differences.
• Architect and oversee ETL processes from extraction to transformation and loading into Kraken’s ingestion JSON format.
• Ensure transformation rules align with Kraken’s domain model, validation requirements, and reconciliation checkpoints.
• Define and implement continuous data quality profiling, cleansing, readiness checks, and exception management.
• Lead the data quality framework ensuring no defective data enters Kraken and historical billing anomalies are normalised.
• Create and govern a centralised ring fencing framework enabling safe validation before go‑live.
• Work with integration teams to define bifurcation logic, routing rules, API constraints, and interim vs. steady‑state integration patterns during coexistence.
• Support formulation of the test strategy.
• Act as the day‑to‑day interface with stakeholders to align scope, timelines, risks, and decisions.
• Manage cross‑domain coordination and dependency alignment.

• Significant experience in software development and Agile.
• Experience in data engineering, business intelligence, and data science solution development.
• Experience with in utilities and large‑scale ERP landscapes.
• Experience migrating to the Kraken (Octopus Energy) platform.
• Highly proficient in data quality, reconciliation, auditability, and migration governance frameworks.
• Experience delivering cohort‑based migrations with legacy coexistence and phased customer movement.
• Ability to work with architecture, integration, QA, and business teams on end‑to‑end migration execution.
• IT qualification – degree or equivalent experience.
• Professional certifications (e.g., MCSE).

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.

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.