Nicolas C.

Nicolas C.

iOS Developer

France
Trusted member since 2025
10 years of experience

He has led the development and delivery of high-impact applications across fintech, accessibility, and enterprise domains. His notable projects include doubling active users at Kard within six months, implementing SSO solutions for over 1 million Dashlane users, and launching France’s national Telecommunications relay service at Rogervoice. He has also contributed to ACCOR’s Vision Pro app and the life-saving Staying Alive application.

Known for translating complex requirements into intuitive, scalable solutions, Nicolas consistently delivers applications that combine exceptional user experience with maintainable, high-quality code.

Main expertise

iOSiOS10 years
SwiftSwift10 years
MobileMobile9 years
UIKitUIKit10 years
13+

Experience5

Betclic Group

Senior iOS Engineer

Betclic Group
Entertainment and Media
Apr 2024 · 2y 6m

Betclic Group is a leading European online gaming company offering sports betting, casino, and gambling services, committed to responsible and secure digital entertainment.

  • Developed and maintained Safer Gambling features, ensuring compliance with EU and local regulations.
  • Integrated Instant Bank Transfer and MBway payment options, improving the user experience and transaction success rate.
  • Refactored the login flow, reducing authentication waiting times by 50% and enhancing app responsiveness.
  • Implemented an AI-powered chatbot for personalized customer support and instant query resolution.
  • Maintained rigorous code quality through CI/CD pipelines, code reviews, and Swift/iOS best practices.
iOSiOS
SwiftSwift
UIKitUIKit
FirebaseFirebase
REST APIREST API
2+
Betclic iOS App
Kard

Senior iOS Engineer

Kard
Financial Technology (FinTech)
Oct 2021 - Oct 2024 · 3y

Kard is a French fintech app that offers digital banking services for teens and families, promoting financial literacy and control through an intuitive mobile interface.

  • Developed key features such as in-app chat and a centralized hub to boost user engagement.
  • Doubled active customers in six months by enhancing onboarding and login UX with SwiftUI-based flows.
  • Added ATM location services and accessibility improvements.
  • Led the adoption of SwiftUI across the app, improving performance and accelerating feature deployment.
  • Collaborated cross-functionally with backend, design, and product teams in an agile setting.
GraphQLGraphQL
iOSiOS
SwiftSwift
UIKitUIKit
FirebaseFirebase
SwiftUISwiftUI
Kard iOS App
Dashlane

iOS Engineer

Dashlane
Cybersecurity
Oct 2019 - Oct 2021 · 2y

Dashlane is a global password manager and identity management platform serving millions of users worldwide.

  • Engineered Single Sign-On (SSO) solutions for B2B clients, supporting over 1 million users securely.
  • Enhanced AutoFill with OTP suggestion logic, streamlining login flows.
  • Contributed to the 2020 Super Bowl rebranding, delivering a polished, high-performing product launch.
  • Applied advanced Swift and SwiftUI practices to maintain accessibility and compliance standards.
  • Collaborated with cross-platform teams to ensure seamless integration with web and backend systems.
SwiftSwift
Usability TestingUsability Testing
UIKitUIKit
Objective-CObjective-C
REST APIREST API
3+
Dashlane iOS App
Rogervoice

iOS Engineer

Rogervoice
Healthcare IT
Aug 2017 - Oct 2019 · 2y 2m

Rogervoice develops communication tools enabling phone calls for the deaf and hard of hearing through speech recognition and live captioning.

  • Launched France’s national Telecommunications relay service, which was subsequently integrated by major telecom providers.
  • Developed real-time transcription using Google Speech-to-Text API, achieving 60 fps live captioning.
  • Implemented video call and in-app purchase features to enhance accessibility and usability.
  • Ensured compliance with accessibility standards, improving inclusivity and adoption.
GolangGolang
CC
C++C++
SwiftSwift
UIKitUIKit
4+

iOS Engineer

Various Experience
Information Technology (IT) and Services
Sep 2015 · 11y 1m
  • Delivered high-impact freelance projects for international clients across hospitality, health, and AI sectors.
  • Developed the ALL.COM Vision Pro app for ACCOR in partnership with Incal.AI, implementing 360° booking experiences.
  • Rebuilt Staying Alive, a life-saving emergency response app in SwiftUI, helping first responders save approximately 10 lives per month.
  • Created MEE6 Keyboard, an AI-based keyboard extension for personalized sticker generation.
  • Delivered SwiftUI and Supabase integrations for clients including Yurplan, Steeple, Bright, BigApe, Kleep.ai, Udini.ai, and SpotR.
iOSiOS
SwiftSwift
FigmaFigma
Objective-CObjective-C
SwiftUISwiftUI
SupabaseSupabase
Staying Alive iOS App

Engineering excellence

All iOS Developers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated iOS Developers are distributed across that range, where our acceptance threshold for this parameter sits, and where Nicolas stands.

050100150200250300Engineering excellence scoreShare of engineersmedianmeanProxifyacceptancethreshold
Nicolas
Score 230 · Top 2% of engineers

Certificates 1

designcode.io
SwiftUI for iOS 14designcode.io

Issued May 2021
Credential ID DC-1620250289207

designcode.io
SwiftUI for iOS 14designcode.io

Issued May 2021
Credential ID DC-1620250289207

Do you want to know more about Nicolas’s certifications?Book a call

Portfolio

Highlighted by Nicolas

Betclic iOS App 1
Apr 2024 · Betclic Group
Betclic iOS App

Other projects 3

Kard iOS App
Dashlane iOS App
Staying Alive iOS App

Education

California State University, Long Beach
California State University, Long Beach
CECS2016 - 2017
EPITECH
EPITECH
Information Technologies2013 - 2018

Stop browsing.
Get matched faster.