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Role: Principal Engineer (.Net)
Location: London/ Coventry
Mode: Hybrid (2 days a week)
Role Type – Permanent
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.
Technical Vision & Leadership
You will set the technical direction for projects, defining architecture principles, design patterns, and, when necessary, mentoring senior engineers.
Strategic Impact & Problem Solving
You are responsible for tackling highly ambiguous and complex technical challenges, breaking them down into scalable, secure, and resilient designs.
Engineering Excellence
You drive adoption of DevOps culture, automation, code quality standards (e.g., CI/CD), and best practices across teams, often collaborating with the TCS Engineering Office.
Stakeholder Management
You work closely with clients to understand their needs, negotiate technical decisions, and translate business requirements into technical roadmaps.
Mentorship & Influence
You cultivate talent by mentoring senior and junior engineers, guiding them toward technical autonomy.
The Role
As a Principal Engineer, you will drive engineering excellence, shape modern technology standards, and influence the future of retail technology for millions of customers.
You’ll work in a supportive, inclusive, and collaborative engineering community—one that values experimentation, innovation, and evidence-based decision making. If you’re passionate about modern engineering practices and want the freedom to explore, lead, and deliver at scale, this is the place to thrive.
Your responsibilities
- Setting and evolving engineering strategy, standards, and best practices across your domain.
- Influencing innovation, modern ways of working, and technical direction across engineering teams.
- Leading by example through deep technical expertise, supporting Staff Engineers and teams to deliver scalable, high‑performance technology solutions.
- Guiding engineers and senior leaders with expert insight on technical risk, impact assessment, and prioritization.
- Designing and overseeing the delivery of large‑scale, high‑availability systems using cutting‑edge technologies.
- Driving the adoption and continuous improvement of engineering practices, using data and evidence to support decision‑making.
- Leverage AI and intelligent automation to modernize our systems, streamline decision making, and ensure the organization remains future fit in a rapidly evolving technology landscape.
- Shaping engineering culture by developing talent, mentoring engineers, and contributing to a thriving community of practice.
- Own “Secure‑by‑design” by enforcing security standards, vulnerability management, raising/helping resolve security risks and issues.
- Enable automation process where applicable via delivery pipelines, perform PoC on latest tech stack, framework for fitment analysis
- Contribute, participate as an active member of the wider technical leadership community, enable teams with active engagement in similar forums
- Implement observability frameworks including monitoring, logging, and SLO/SLI practices
Your Profile
Essential skills/knowledge/experience
Technical Excellence:
- Strong understanding of engineering ecosystems, software architectures, and scalable system design.
- Experience leading the development of complex, high‑performance, distributed systems.
- Proven ability to define, evolve, and govern technical standards and engineering best practices.
- AI fluency, including practical experience applying generative AI tools and techniques responsibly to improve developer productivity and decision making.
Leadership & Influence
- Proven experience in a senior or principal engineering role within a modern technology organization.
- Proven ability to influence engineering strategy and shape technology direction across multiple teams or domains.
- Experience working with Senior Engineering Managers and technical leaders to guide engineering vision and delivery.
Ways of Working
- Strong advocate for agile methodologies and modern engineering practises.
- Proven ability to build collaborative, inclusive relationships across engineering communities.
- Comfortable making data‑driven decisions and evaluating trade-offs at scale.
- Strong experience developing colleagues, mentoring engineers at all levels, and contributing to engineering culture.
- Passion for innovation, continuous improvement, and enabling others to succeed.
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. Please email us at UKI.recruitment@tcs.com if you would like to opt in.
If you are an applicant who needs any adjustments to the application process or interview, please contact at UKI.recruitment@tcs.com with the subject line: “Adjustment Request” or call TCS London Office 02031552100 / +44 204 520 2575 to request an adjustment. We welcome requests prior to you completing the application and at any stage of the recruitment process.
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