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Role: IOS Engineer

Job Type: Permanent

Location: Bristol, UK / 3 days office

Number of hours: 40 hours per week – full time

Ready to utilize your experience and expertise as IOS Engineer?

We have an exciting role for you - IOS Engineer!

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.

• Build mission‑critical mobile components used by millions of customers.
• Collaborate across architecture, security, and engineering teams to deliver at speed.
• Shape best practices in secure, scalable mobile engineering.

The Role

As an iOS Engineer, you will design, build, and maintain secure, high‑performing iOS components and SDKs used across bank‑wide mobile applications. You will enhance the mobile security platform by developing modular, scalable frameworks, work proactively to address emerging security risks, and contribute to the delivery of production‑grade iOS applications used by millions of customers.

Key responsibilities:

• Design, build, and maintain iOS security components and SDKs for seamless adoption by mobile teams.
• Develop modular, scalable, and reusable frameworks that strengthen the bank’s mobile security posture.
• Monitor evolving threats and design solutions that mitigate iOS security risks.
• Apply solid knowledge of Swift concurrency (async/await, GCD, Operations) to implement thread‑safe, performant solutions.
• Write clean, well‑tested code using Xcode, Git/GitHub, XCTest, and XCUITest.
• Collaborate with strategy, architecture, and backend teams to design and integrate secure solutions.
• Champion engineering quality through code reviews, inner‑sourcing, reusable patterns, and documentation.

Your Profile

Essential skills/knowledge/experience:

• Strong programming expertise in Swift with hands‑on experience using Xcode, Git/GitHub, XCTest, and XCUITest.
• Deep understanding of modular iOS app architecture, including framework‑based modularisation and patterns such as MVVM.
• Proven experience building, publishing, and integrating SDKs that are scalable, well‑documented, and easy to consume.
• Solid grasp of concurrency in Swift (async/await, GCD, Operations) and ability to design thread‑safe solutions.
• Track record of delivering production‑grade iOS applications with strong performance, maintainability, and reliability.
• Working knowledge of secure coding practices in mobile (e.g., safe storage, authentication flows, sensitive data handling).
• Strong communication and collaboration skills; able to work across teams and drive reusability and reduction of technical waste.
• Advocate for engineering quality, applying Pair Programming, TDD, Code Reviews, CI, and Automated Testing.

Desirable skills/knowledge/experience:

• Understanding of mobile security principles, including secure storage, authentication flows, and sensitive data handling.
• Experience with CI/CD pipelines for mobile using tools such as GitHub Actions, Fastlane, or automated build/test deployment processes.

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.

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 [email protected] 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 [email protected] 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.