# Septimiu-Iulian Călin

> Software Engineer @ Amex | MSci Computer Science Graduate @ KCL

Location: London, England, United Kingdom
Profile: https://flows.cv/septimiuiulian

Software Engineer with an MSci in Computer Science from King’s College London, passionate about building scalable, user-focused solutions. Experienced in iOS development with Swift and Combine, as well as backend and frontend engineering with C#, C++, and React. I thrive in collaborative, fast-paced environments, contributing to high-quality, maintainable code. Always eager to learn new technologies and tackle complex challenges.

## Work Experience
### Software Engineer @ American Express
Jan 2025 – Present | London Area, United Kingdom

### Junior Software Engineer @ Dolphin Dynamics Limited
Jan 2024 – Jan 2025 | London Area, United Kingdom
• Maintain and enhance a legacy system built with C# and C++, ensuring stability and adding new functionality for internal and client needs.
• Develop backend features and fix bugs using .NET Framework 4.8, with a focus on optimization and business logic implementation.
• Contribute to a desktop application using C++ 12 and MFC, addressing full stack tasks, including bug resolution and feature development.
• Migrated an outdated React project, ensuring improved maintainability and adherence to modern standards.

### Graduate Software Engineer @ Go City®
Jan 2023 – Jan 2024 | London, England, United Kingdom
• Joined the Apps Team and worked on the Go City iOS app following the MVVM+C architecture.
• Engaged in task creation and prioritisation by engaging in Stand-Ups, Sprint Planning, Refinement, Sprint Reviews and Retrospectives.
• Worked in a cross-functional team involving Product, QA, Design, and Development, enhancing my collaborative teamwork skills.
• Participated actively in code reviews and paired with team members on feature development.
• Developed a strong understanding of iOS app architecture, UI/UX design principles, and best coding practices.
• Acquired skills in testing and adopted practices to enhance code testability.
• Implemented features in the production environment, including customer itineraries and checkout


## Education
### MSci in Computer Science
King's College London

### Romanian Baccalaureate in Mathematics and Computer Science
International Computer Highschool of Constanta


## Contact & Social
- LinkedIn: https://linkedin.com/in/s-calin
- Website: https://www.septimiucalin.com

---
Source: https://flows.cv/septimiuiulian
JSON Resume: https://flows.cv/septimiuiulian/resume.json
Last updated: 2026-04-05