Architect

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Role: Senior Full Stack Architect

Job Type: Permanent

Location: London, UK / Hybrid

Number of hours: 40 hours per week – full time

Ready to apply your expertise in full stack architecture?

We have an exciting opportunity for you – Senior Full Stack Architect!

Careers at TCS: It Means More

TCS is a purpose-led transformation company, built on belief. We don’t just help businesses 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 — more opportunity, more challenge, and more impact through complex, high value transformation programmes.

• Build strong relationships with a diverse range of stakeholders.

• Gain access to extensive learning and career development opportunities.

• Collaborate closely with teams across the business to bring products and platforms to life.

The Role

As a Senior Full Stack Architect , you will lead the technical architecture and implementation of complex, mission‑critical software systems within a highly regulated financial services environment. You will play a key role in a multi‑year digital transformation programme, shaping engineering excellence and supporting cultural and technological change across the organisation.

Key Responsibilities

• Own end-to-end technical architecture across frontend, backend, APIs, data layers and system integrations.

• Define reference architectures, technology standards and design principles balancing scalability, performance, security and cost.

• Drive long-term architectural decisions aligned with business growth and future extensibility.

• Lead architectural reviews and contribute to technology governance frameworks.

• Demonstrate strong understanding of SDLC practices within enterprise environments.

• Apply polyglot programming skills and adapt quickly to evolving technologies and frameworks.

• Champion engineering best practices including automated testing, GitOps and CI/CD.

• Conduct root‑cause analysis, performance tuning and promote knowledge sharing.

• Design cloud‑native solutions using Docker, Kubernetes and service mesh architectures such as Istio.

• Architect CI/CD and Infrastructure‑as‑Code solutions using Terraform, CloudFormation or similar tools.

• Implement observability frameworks including monitoring, logging and alerting.

• Ensure high availability, disaster recovery and cost‑effective architectural design.

• Coach engineering teams to adopt architectural standards and identify anti‑patterns.

• Support delivery using Agile methodologies including SCRUM and Kanban.

• Foster a culture of innovation, transparency and continuous improvement.

• Manage senior stakeholder relationships and communicate architectural progress effectively.

• Apply frontend expertise in React, TypeScript, Material UI and modern JavaScript (ES6+).

• Define state management patterns including Redux, Context API or similar.

• Use Node.js and Python to design backend services, APIs and microservices.

• Develop RESTful APIs, GraphQL endpoints and event‑driven systems using Kafka or RabbitMQ.

• Work with PostgreSQL, MongoDB and Redis to design scalable, high‑performance data models.

• Define caching strategies and ensure understanding of ACID and eventual consistency principles.

• Architect solutions on AWS, Azure or GCP with deep experience in at least one platform.

• Build and operate container orchestration, CI/CD pipelines and Infrastructure‑as‑Code solutions.

• Use monitoring tools such as Datadog, AppDynamics, Dynatrace, Prometheus or Grafana.

• Apply secure coding and architecture principles including OAuth, JWT and SAML.

• Ensure compliance with regulatory and security requirements across financial services environments.

Your Profile

Essential skills / knowledge / experience

• Experience in critical software development roles with measurable business impact.

• Experience in senior architecture or technical leadership positions.

• Extensive experience with Agile delivery (SCRUM/Kanban).

• Strong track record of delivering scalable solutions in regulated industries.

• Experience operating within global, matrixed organisations.

• Exceptional analytical and debugging skills across the full technology stack.

• Strong understanding of networking, operating systems, virtualisation and distributed systems.

• Excellent communication and stakeholder management skills.

• Ability to balance technical excellence with business priorities.

• Hands-on experience with cloud platforms, containers, CI/CD and modern DevOps practices.

Desirable skills / knowledge / experience

• Cloud architecture certifications such as AWS Solutions Architect or Azure Solutions Architect.

• Experience in financial services regulatory environments.

• Exposure to service mesh architectures, event‑driven systems and distributed design patterns.

• Knowledge of compliance frameworks and secure development standards.

Rewards & Benefits

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.

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 believe in building and sustaining a culture of equity and belonging where everyone can thrive. Our diversity and inclusion motto is ‘Inclusion without Exception’. Our continued commitment to Culture and Diversity is reflected across our workforce implemented through equitable workplace policies and processes.

You’ll find a welcoming culture and many internal volunteering and social networks to join (these are optional). Our diversity, inclusion and social activities include 12 employee networks such as gender diversity, LGBTQIA+ & Allies, mental health, disability & neurodiversity inclusion and many more, as well as health & wellness initiatives and sports events and we sponsor the London Marathon.

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.

If you are an applicant who needs any adjustments to the application process or interview, please contact us at UKI.recruitment@tcs.com with the subject line: “Adjustment Request” or call TCS London Office 02031552100 to request an adjustment. We welcome requests prior to you completing the application and at any stage of the recruitment process.

Join us and do more of what matters. Apply online now.