Senior Application Engineer at Telefónica Tech UK Limited

Position Senior Application Engineer
Posted 15 Feb 2026
Expired 17 Mar 2026
Company Telefónica Tech UK Limited
Location London | GB
Job Type Full Time

Job Description:

Latest job information from Telefónica Tech UK Limited for the position of Senior Application Engineer. If the Senior Application Engineer vacancy in London matches your qualifications, please submit your latest application or CV directly through the updated Jobkos job portal.

Please note that applying for a job may not always be easy, as new candidates must meet certain qualifications and requirements set by the company. We hope the career opportunity at Telefónica Tech UK Limited for the position of Senior Application Engineer below matches your qualifications.

Company Description

Telefónica Tech (part of the Telefónica Group) is a leading NextGen Tech solutions provider with a highly diversified team of over 6,000 exceptionally skilled employees and nationalities.

We serve more than 5.5m customers every day in over 175 countries, with a global ecosystem of market-leading partners. Global strategic hubs: Spain, Brazil, the UK, Germany.

The Telefónica Tech UK&I hub has an end- to-end portfolio of market leading services and develops integrated technology solutions to accelerate digital transformation through: Cloud, Data & AI, Enterprise Applications, Workplace Services and Cyber Security & Networking.

Values: Open, Bold, Trusted

Trusted Partners:

  • Microsoft: Top 3 Service Providers, Azure Expert Status, Fastrack & Inner Circle Partner
  • HPE: Platinum Partner - FY23 UK&I Solution Provider of the Year
  • Palo Alto & Crowdstrike: part of our NextDefense Cyber Security Portfolio
  • Fortinet: Elite VIP Program - one of only 2 in the UK
  • AWS: Advanced Solution & Managed Service Provider Program

Job Description

Senior Application Engineer/Developer

Do you want to build AI and cloud-native applications that make customers go wow?

Do you want to test the limits of software delivery, AI engineering, and application patterns?

Do you want to build intelligent applications that no one has thought about?

If so, this role is for you. We are searching for an application engineer or developer who naturally wants to get hands-on to build AI and cloud-native applications, pushing the limits for what is technically possible.

Key Responsibilities:

  • Build, test and deploy modern applications
  • Reimagine software delivery in the age of AI and cloud
  • Test AI code generation to ensure it works correctly

Skills/Experience

  • Full-stack software engineering experience, designing, building and operating modern applications
  • Hands-on expertise with a tech stack consisting of modern programming languages and cloud platforms
  • Proficiency in modern software development practices, including Agile methodologies, DevOps, and CI/CD pipelines

Key Words:

Cloud Modernisation - Cloud Modernization - Application Architect - Full Stack Engineer - Application Modernisation - AppMod - Application Engineer - Software Architect - Cloud - Azure - AWS - GCP - Application Architecture - Application Developer

Additional Information

We don't believe hiring is a tick box exercise, so if you feel that you don't match the job description 100%, but would still be a great fit for a role, please get in touch.

At Telefónica Tech, we believe inclusion is the bridge that empowers everyone to be their authentic selves. We celebrate and respect our differences because diversity drives innovation and makes us stronger.

Be yourself with us, and feel that you belong.

We welcome applicants from all backgrounds and identities regardless of age, disability, gender reassignment, marital or civil partnership status, pregnancy or maternity, race, religion or belief, sex, and sexual orientation.

We are also committed to equity, accessible hiring practices, and creating an inclusive culture through many means including TogetHer (Women's network) and our Employee Resource Groups which include Diversity and Inclusion, Telefónica Tech Pride, Neurodiversity, ELEVATE (African and Caribbean heritage network), and Sustainability.

We don't believe hiring is a tick box exercise, so if you feel that you don't match the job description 100%, but would still be a great fit for role, please get in touch.

Job Info:

  • Company: Telefónica Tech UK Limited
  • Position: Senior Application Engineer
  • Work Location: London
  • Country: GB

How to Submit an Application:

After reading and understanding the criteria and minimum qualification requirements explained in the job information Senior Application Engineer at the office London above, immediately complete the job application files such as a job application letter, CV, photocopy of diploma, transcript, and other supplements as explained above. Submit via the Next Page link below.

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