Database Specialist

Role: DB Specialist – MongoDB

Job Type: Permanent

Location: Newbury ,UK

Number of hours: 40 hours per week – full time

Are you looking to apply your expertise in modern data platforms and NoSQL technologies to support large‐scale enterprise transformation?

We have an exciting opportunity for you – DB Specialist – MongoDB!

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.

• Design next‐generation data platforms supporting large‐scale transformation programmes.
• Work with modern document databases, event‐driven architectures, and cloud‐native services.
• Play a key role in enterprise data migration and modernisation initiatives.

The Role

As a DB Specialist – MongoDB , you will design, build, and optimise MongoDB‐based data models for large‐scale, cloud‐native systems. You will support enterprise data modernisation by enabling API‐first and event‐driven architectures, leading migration initiatives, and ensuring high‐performance and scalable data solutions aligned with industry and enterprise standards.

Key responsibilities:

• Designing MongoDB document‐based data models aligned with API‐first and event‐driven architecture principles.
• Aligning data models with industry standards such as TMF Open APIs and shared information frameworks.
• Optimising data models for flexible schema evolution, high‐volume data operations, and efficient query performance.
• Defining indexing strategies and aggregation frameworks to support performance and scalability requirements.
• Developing and executing migration strategies from relational databases such as Oracle to MongoDB.
• Supporting data migration activities, including bulk data loads, incremental migration processes, and validation or reconciliation where required.
• Collaborating with cloud and platform teams on migration tooling and implementation approaches.
• Ensuring data architecture supports microservices and API‐driven system design.
• Contributing to overall data platform performance, availability, and scalability improvements.
• Working within large‐scale integration environments to ensure seamless data flow and interoperability.

Your Profile

Essential skills/knowledge/experience:

• Strong expertise in MongoDB data modelling, including document design, embedding, and referencing strategies.
• Hands‐on experience with indexing strategies and aggregation pipelines.
• Experience designing schemas for microservices‐based and API‐driven architectures.
• Exposure to event‐driven architectural patterns.
• Practical experience with relational‐to‐NoSQL migration strategies.
• Understanding of data performance, scalability, and high‐availability considerations.
• Experience working in complex, large‐scale integration environments.
• Familiarity with MongoDB Atlas or similar managed database services.

Desirable skills/knowledge/experience:

• Experience within telecom or provisioning domains.
• Familiarity with TM Forum standards and frameworks.
• Experience working on large‐scale transformation or modernisation programmes.
• Understanding of AWS cloud services and serverless architectures.
• Knowledge of DevOps practices and CI/CD pipelines.
• Experience working within Agile or Scrum delivery models.