Network Architect

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Role: Network Architect

Job Type: Permanent/FTC (Flexible for both)

Number of hours: 40 hours per week - full time

Ready to utilize your experience and expertise as a Network Architect?

We have an exciting role for you Network Architect!

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.

• Contribute to network modernisation and cybersecurity transformation at scale.
• Collaborate with high-performing teams across enterprise and manufacturing environments.
• Drive strategic technology adoption across complex, multi-site landscapes.

The Role

As a Network Architect, you will play a key role in designing and advancing enterprise and OT network architectures across major digital programmes, including SD-WAN adoption, OT/IT integration, cybersecurity uplift, and global network modernisation. You will define standards, create architectures, and guide the introduction of new technologies such as 5G, edge computing, and automation. You will work closely with key customers to provide architectural leadership and ensure secure, scalable network solutions.

Your responsibilities:

• Lead integration of industrial control systems (ICS) with enterprise networks while preserving security boundaries.
• Design resilient, highly available LAN, WAN, and SD-WAN network architectures for industrial and enterprise environments.
• Investigate network issues, perform root-cause analysis, and recommend technical enhancements.
• Contribute to OT and IT network roadmaps, reference architectures, standards, and patterns.
• Produce high-level and detailed designs covering integration, data, platform, and security requirements in Agile or Waterfall environments.
• Represent network designs to the IT Design Authority and ensure alignment with standards.
• Support pre-sales activities including effort estimation and solution shaping.
• Produce technical documentation such as firewall specs, DNS designs, load-balancing specs, certificates, and security frameworks.
• Lead or participate in technical workshops with internal stakeholders and external vendors.
• Support intelligent process automation discovery initiatives.
• Review solution implementations to ensure compliance with approved designs.

Your Profile

Essential skills/knowledge/experience:

• Strong understanding of OT gold standards and the UK’s Cyber Assessment Framework (CAF).
• Experience implementing Zero Trust concepts for OT without disrupting legacy systems.
• Proven track record delivering network and security architectures across OT and IT environments.
• Hands-on experience with SD-WAN technologies and network tools such as DNA-S.
• Ability to produce high-quality designs with strong error-handling, monitoring, and logging principles.
• Knowledge of best practices for secure architecture in OT and IR environments.
• Experience working on transformation programmes using agile methodologies.
• Willingness to evaluate emerging technologies and drive innovative solutions.
• Experience leading technical teams or mentoring junior engineers.
• Ability to collaborate effectively with offshore delivery teams.
• Strong troubleshooting skills in Cisco environments (Nexus, Enterprise routers, LAN switches).
• Knowledge of major firewall technologies including Cisco ASA, Palo Alto, Fortinet.
• Experience with BIG-IP F5 load balancers.
• Hands-on experience with security technologies (Pulse Secure SSL VPN, Checkpoint, Palo Alto, VMware NSX).
• Working knowledge of SAML, SSO, LDAP, Active Directory.
• Deep understanding of IPSEC, GRE, HTTP/HTTPS, DNS protocols.
• Experience with Proxy and SSL technologies.
• Strong understanding of cybersecurity protocols, technologies, and applications.
• Industry certifications in networking or security (e.g., CCNP, CCIE, CISSP) - optional but beneficial.
• Knowledge of Microsoft Visio and Lucidchart for architecture diagramming.

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 if you would like to opt in.

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

Next Steps:

Application Process

• Online application: You can apply directly through LinkedIn or by uploading your CV. In case you wish to submit your application via another format like audio/video, please contact -
• 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.
• Managerial discussion: This discussion will focus on behavioural aspects and person-organisation fit.
• 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.

Beware of Fraudulent offers

This is to notify you that TCS does not ask for any sort of payment or security deposit from candidates at any stage of the recruitment process. The firm never sends out job offers from free internet email services like Gmail, Yahoo Mail, and so on. TCS has not authorised any third-party company to collect money on their behalf. As a vigilant job seeker, beware of fraudulent recruitment activity and protect your interests! You can write to to report any fraudulent activity.

Due to the high volume of applications, we will be unable to contact each applicant individually on the status of their application. If you have not received a direct response within 30 days, then it should be deemed unsuccessful on this occasion.

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

• Strong understanding of OT gold standards and the UK’s Cyber Assessment Framework (CAF).
• Experience implementing Zero Trust concepts for OT without disrupting legacy systems.
• Proven track record delivering network and security architectures across OT and IT environments.
• Hands-on experience with SD-WAN technologies and network tools such as DNA-S.
• Ability to produce high-quality designs with strong error-handling, monitoring, and logging principles.
• Knowledge of best practices for secure architecture in OT and IR environments.
• Experience working on transformation programmes using agile methodologies.
• Willingness to evaluate emerging technologies and drive innovative solutions.
• Experience leading technical teams or mentoring junior engineers.
• Ability to collaborate effectively with offshore delivery teams.
• Strong troubleshooting skills in Cisco environments (Nexus, Enterprise routers, LAN switches).
• Knowledge of major firewall technologies including Cisco ASA, Palo Alto, Fortinet.
• Experience with BIG-IP F5 load balancers.
• Hands-on experience with security technologies (Pulse Secure SSL VPN, Checkpoint, Palo Alto, VMware NSX).
• Working knowledge of SAML, SSO, LDAP, Active Directory.
• Deep understanding of IPSEC, GRE, HTTP/HTTPS, DNS protocols.
• Experience with Proxy and SSL technologies.
• Strong understanding of cybersecurity protocols, technologies, and applications.
• Industry certifications in networking or security (e.g., CCNP, CCIE, CISSP) - optional but beneficial.
• Knowledge of Microsoft Visio and Lucidchart for architecture diagramming.

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.