Azure Cosmos DB Developer

As an Azure Cosmos DB Developer, you will play a key role in transforming critical application and data engineering capabilities within a leading financial services environment. You will be responsible for developing cloud-native solutions using Azure Cosmos DB and Microsoft Fabric, optimizing data performance, and supporting scalable, high-quality data engineering practices. The role requires strong technical expertise in NoSQL databases, distributed computing, and modern cloud development practices., * Develop cloud-native applications using Azure Cosmos DB, including SQL API and MongoDB API.

• Design and implement efficient NoSQL data models aligned with application and business requirements.
• Optimize database performance through effective partitioning, indexing strategies, and query tuning.
• Develop and maintain Cosmos DB queries to improve performance and minimize RU consumption.
• Leverage Cosmos DB Change Data Feed (CDF) capabilities to support data integration and processing solutions.
• Design and implement PySpark data pipelines using Microsoft Fabric.
• Establish and maintain CI/CD pipelines using GitLab to support automated deployment and delivery.
• Develop and maintain unit and integration tests using Pytest and associated testing frameworks.
• Collaborate with architects, developers, and DevOps teams to integrate Cosmos DB into microservices-based solutions.
• Ensure compliance with security, governance, and data protection requirements.
• Troubleshoot performance, integration, and data processing issues across cloud-native environments., 2. Skill-Based discussion: This will be a level 1 interview with the project team, it can be via video or in-person. Details will be confirmed by your recruiter. 3. Managerial discussion: This discussion will focus on behavioral aspects and person-organization fit. 4. HR Discussion: This will be with one of the members of the HR team and will cover your career journey, aspirations for growth, compensation and any other questions you may have.

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• Strong hands-on experience with Azure Cosmos DB, including query optimization, throughput management, and performance tuning.
• Thorough understanding of Cosmos DB Change Data Feed (CDF) and integration with Spark-based solutions.
• Experience working with Cosmos DB SDKs in technologies such as .NET, Java, Python, or Node.js.
• Strong understanding of distributed computing concepts and Apache Spark architecture.
• Hands-on experience developing data pipelines using PySpark.
• Experience with Pytest and automated testing frameworks.
• Strong understanding of partitioning, indexing strategies, and consistency models within Cosmos DB.
• Experience building scalable applications and working with concurrency patterns.
• Experience with Git, version control systems, and CI/CD tooling.
• Strong analytical, problem-solving, communication, and stakeholder management skills.

Desirable skills/knowledge/experience

• Advanced proficiency in C#, , and .NET Core.
• Strong understanding of object-oriented design principles and software engineering best practices.
• Experience developing microservices-based architectures.
• Familiarity with Azure cloud-native services and modern DevOps practices.
• Experience within financial services or highly regulated environments.

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.

Careers at TCS: It Means More

TCS is a purpose-led transformation company, built on belief. We go beyond helping businesses transform through technology, we enable them to make a meaningful difference to the people and communities they serve. Our clients include leading organizations across the UK and globally. At TCS, it means more, more opportunity to make an impact that matters through challenging projects that demand innovation, collaboration, and thought leadership.

• Align technology solutions with business outcomes while building expertise in modern cloud and data platforms.
• Contribute to transformative projects within a global financial services environment.
• Design secure, scalable, and resilient solutions that support critical business operations and customer trust.