Freelancer profile translated to English.
Back to original languageAbout Charujan
Senior backend developer with 8 years of experience in designing and developing complex, secure, and high-traffic platforms, primarily in fintech, payment, mobility, and digital wellness contexts.
I have worked in demanding environments (scale-ups, large corporations, international platforms), tackling critical issues such as payments, security, fraud, compliance, and core banking systems.
I would assist my clients from the design to the production of reliable, scalable, and business-oriented solutions.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- tealeBackend DeveloperHEALTH AND WELLNESSMay 2022 - Today (4 years and 1 month)Paris, FranceBackend Developer with occasional involvement in frontend development.Contributed to projects from technical specification to delivery, ensuring robust and scalable solutions.Key projects and impact:Worked on a recommendation algorithm for mental wellness programs, delivering personalized series and exercises to users.Developed an HR-focused wellbeing dashboard, providing insights into team wellbeing, including data history and validation, leveraging an event-sourcing architecture.
- BlankBackend DeveloperBANKING AND INSURANCENovember 2020 - April 2024 (3 years and 5 months)Paris, FranceBackend Developer onlyCore Banking System (Bankable) API integration in the platform for Bank (neo-bank of Credit Agricole), webhook integration on payments/credit/debit.User account balance management (handling idempotency)Working closely with Fraud and Compliance team by providing necessary information from customer incoming/outgoing flow.Working on full AWS architecture
- Kapten (ex-ChauffeurBackend DeveloperTRANSPORTATIONMay 2017 - May 201792300 Levallois-Perret, FranceSecurity Team6 months internship within the security team, focusing on user account security and device management for authentication and access control.B2C TeamContributed to the internationalization of the platform, supporting expansion into new markets.Payments Team- Managed invoice processing and payment-related workflows.- Performed fraud analysis and detection to improve transaction security.- Led the full integration of 3D Secure payments with the PSP (Adyen).Participated in platform and data migration to Free Now, ensuring continuity and data integrity.
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Education
- Expert in Information TechnologiesEPITECH - European Institute of Technology Technologies2017
- MITCS (Master’s Degree in Information Technology & Computer Science)Ahlia University2016