Architect, Systems Engineer

If you need support in completing the application or if you require a different format of this document, please get in touch with at or call TCS London Office number with the subject line: “Application Support Request”.

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.

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.

• 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, Git Ops 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, Cloud Formation 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.
• 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, Graph
  
  QL endpoints and event‑driven systems using Kafka or Rabbit
  
  MQ.
• Work with Postgre
  
  SQL, Mongo
  
  DB 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, App Dynamics, 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.

• 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…