Sophie Stirling
Product Designer at Aviva
United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolSophie Stirling is a seasoned Product Designer with 6+ years focused on UX/UI who has led design for consumer platforms, enterprise back-ends and high-profile agency campaigns across the UK. She moves projects from discovery to delivery using the Double Diamond process, building design systems, high-fidelity prototypes and micro-interactions that scale across web and mobile. At Pearson and Knight Frank she led major platform launches and MVPs, while at Racing Post she established a cross-product design system and mentored other designers. Her background working with top agencies and brands gives her a rare blend of strategic product thinking and polished visual craft. Unusually for a designer, she also contributes to secure engineering projects—having implemented cryptographic primitives and addressed Ed25519 security issues in the open-source Tink library—bringing a practical appreciation for security and backend constraints to her product work. Now based in the UK, she combines fast-paced sprint delivery with stakeholder leadership and user-centred research.
6 years of coding experience
16 years of employment as a software developer
User Experience Immersive Program, User Experience Immersive Program at General AssemblyBA (Hons) Graphic Design, BA (Hons) Graphic Design at Ravensbourne University LondonMA Visual Communication, MA Visual Communication at University of the Arts London
Github Skills (7)
c-language10
cprogramming-language10
cryptography10
security10
java9
go9
javas9
Programming languages (7)
Github contributions (5)
tink-crypto/tink
Aug 2019 - Jan 2022
Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:50 commits, 6 pushes, 3 comments in 2 years 4 months
Contributions summary:Sophie primarily contributed to defining and implementing cryptographic APIs within the Tink library, specifically focusing on Streaming MACs and PRFSet primitives. Their work included creating interfaces and associated code for streaming message authentication codes, including output streams and the computation of results. The user also addressed a security vulnerability related to point validity checks in Ed25519, demonstrating a focus on secure cryptographic implementations. Furthermore, the user added key templates and implementations of various PRF algorithms like AES-CMAC and HMAC, expanding the functionality of the library.
securecryptographycppcross-languagemulti-language
sophieschmieg/abca
Sep 2021 - Dec 2022
a bad computer algebra system. Don't use it. It's bad. Very bad.
Contributions:17 commits, 25 PRs, 22 pushes in 1 year 4 months
badmathcomputer-algebra-systemalgebracomputer-algebra
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.