Job Specifications
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Role: Software Engineer
Job Type: Permanent
Location: London, UK, Hybrid
We have an exciting opportunity for you – Software Engineer.
Lead transformation: Drive technical excellence and shape strategic programs that power business growth.
Empower teams: Inspire innovation, mentor talent, and foster a culture of engineering mastery.
Deliver impact: Create scalable, secure solutions that enhance customer experiences and operational efficiency.
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.
As a senior member of the team, you will influence technical direction, champion DevOps culture, and mentor engineers to adopt best practices. You will work closely with Product, Engineering, and Technology teams to create a resilient, automated, and secure environment that supports continuous delivery and innovation.
The Role
We are looking for a Principal Software Engineer to provide deep technical expertise, deliver high-quality engineering solutions, and operate with excellence. As part of an empowered, multi-disciplinary engineering team, you will design, build, release, and maintain products in partnership with Architecture, Product and Delivery teams.
You will play a pivotal role in shaping a best-in-class engineering culture and driving the transformation towards a modern digital ecosystem using cutting-edge technologies. This is an opportunity to join a community of passionate engineers, solve ambitious problems, and do the best work of your career.
Your responsibilities:
Lead technical excellence across design, development, test, operations, and launch of core product features and strategic programmes with measurement of product metrics & developer experience.
Drive technical direction, standards and influence overall strategy, informing decisions on technology, product investments, and team structures.
Embed security and cyber best practices into design, development, and operations to ensure robust and compliant solutions.
Champion modern engineering practices including cloud-native architectures, microservices, Domain-Driven Design (DDD), and Event-Driven Architecture (EDA), continuous delivery to build scalable with leverage of AI, resilient systems with efficient deployment models and Industry trends.
Promote optimal design pattern usage (SOLID, GoF, Circuit Breaker etc) and ensure pragmatic application for maintainability and scalability.
Champion Communities of Practice to establish engineering excellence, and demonstrating Inner sourcing to build reusable libraries, components.
Pioneer and promote methodologies such as clean code, Automation, clean architecture.
Drive DevOps practices to scalable automate the product development lifecycle, Robust Observability & Monitoring, Efficient Cloud usage & cost optimization and foster ownership culture.
Partner with Engineering, Technology, and Product leadership to ensure strategic alignment.
Mentor senior engineering roles and develop top talent across the organisation.
Promote effective innovation and product-minded technical capabilities across engineering.
Inspire purpose and mastery within engineering teams, guiding them towards autonomy and maturity.
Unblock teams efficiently by providing direction, leading upward, and establishing alignment.
Raise the profile of the technology organisation through public content and contributions to open-source technology.
Support recruitment, onboarding, and internal/external brand outreach activities.
Your Profile
Essential skills/knowledge/experience:
Backend Development: Expertise in Java (versions 17/21/25) with frameworks such as Spring Boot and Micronaut; strong proficiency in test automation using Junit, Mockito and Rest-Assured etc; performance testing experience, High-volume, back‑pressure and rate‑limiting strategies.
Architectural Patterns: Strong knowledge and practical application of SOLID principles, GoF patterns, and Clean Architecture.
Domain-Driven Design: Ability to model domains with bounded contexts, aggregates, entities/value objects, and domain events.
Event-Driven Architecture: Experience designing event contracts, idempotent consumers, DLQ handling, and transactional outbox for reliable messaging.
Databases: Hands-on experience with relational and NoSQL databases including MS SQL, MongoDB, and Oracle 19c.
Caching & Messaging: Proficiency