# Christophe Surun > Backend Software Engineer for Payments Services Location: London, England, United Kingdom Profile: https://flows.cv/christophesurun • Preferred contact method: christophe[at]surun.fr ## Work Experience ### Software Engineer @ Checkout.com Jan 2025 – Present | London Area, United Kingdom • Card Processing team member, writing services and infrastructure to enable Payment Acquiring for DCI and Discover schemes • Integration of new payment methods for the Asian market • Deployment of applications to AWS (Octopus, Harness) • IaC management of resources and pipelines (GitHub Actions, Terraform, Spacelift) • Logging, alerting and SLOs management (Datadog, PagerDuty) • Mentoring of junior team members ### Senior Software Engineer @ Visa Jan 2022 – Jan 2024 | Greater London, England, United Kingdom • Part of the Europe regional team, creating payment solutions for Innovation & Digital Partnerships • Backend Software Engineer for Visa Go, a direct-to-consumer mobile app used by Paris 2024 Olympics visitors, achieving 150k downloads and €1.3M spent within 90 days • Lead Developer for the Digital Card Issuance feature, allowing users to create anonymous prepaid Visa cards, followed by top-ups, open banking transfers and refunds • Integration and extensive testing of an in-app AI chatbot to support all in-app user queries • Mentoring of international graduates and junior team members • Organisation and coordination of monthly social events to enhance workplace culture and improve team morale ### Site Reliability Engineer @ Judopay Jan 2018 – Jan 2022 | London, United Kingdom • Development of web platforms and payments REST APIs (C♯, Jira) • Creation of a customer web interface to generate payments via short URLs and QR codes • Performance and key events monitoring for reporting and alerts (Splunk, OpsGenie) • CI/CD pipeline management for deployment of applications to Staging and Production environments (GitHub, AppVeyor, Octopus Deploy, CodeFresh) • Documentation of the knowledge base and SDKs maintenance (.NET, PHP, Web) • Implementation of dynamic transactions routing based on gateways and acquirers availability ### Software Engineer @ Judopay Jan 2017 – Jan 2018 | London, United Kingdom • Development of web platforms and payments REST APIs (C♯, Jira) • Test driven development, and load testing for performance analysis and scalability (Locust) • Creation of insightful reports to help tracking issues and features usage (Splunk) • Creation of an embedded iframe payment form to ensure PCI DSS compliance for merchants ### Junior Developer @ Broadbean Technology Jan 2017 – Jan 2017 | London, Royaume-Uni • Development of connections between the Broadbean adverts multi-posting platform and third parties websites • APIs documentation review and elaboration of specifications with French and English clients • Integration of multiple job boards to allow recruiters to broadcast adverts on a global scale ### R&D Engineer @ Nout SAS Jan 2015 – Jan 2016 | Région de Montpellier, France • Research and Development for the company's ERP and CRM solutions • Port of the SIMAX customizable management software to a web-based version • Dynamic user interface building using SOAP communication between the user and the web service • Implementation of a parametred Project Management interface ### Private Tutor @ Acadomia Jan 2015 – Jan 2015 | Région de Montpellier, France • Academic support and exams preparation for high school and college students • Regular supervision of several students with Mathematics, Physics and Computer Science classes through the school year ### 3D Developer @ FORUM8 Jan 2014 – Jan 2014 | Tokyo, Japon • Internship in a Civil engineering software company based in Tokyo • Spatial database engine conception with the CIM standards, compatible with the company's civil engineering software suite • Research and development of LOD algorithms on 3D models mesh to adapt their complexity in real time • Creation of an OpenGL rendering engine to visualise models and their transformations ### Mobile Network Technician @ CCA International Jan 2013 – Jan 2013 | Monaco • Frontline support for the French telecommunications company SFR (21 million customers) • Real-time analysis of national network for detection of connection issues • Troubleshooting of the client's terminal (iOS, Android, Windows Phone, BlackBerry OS) ### Web and Video Games Developer @ 7thSide Games Jan 2012 – Jan 2012 | Région de Paris, France • Technical internship at 7thSide Games • Development of web-based and geolocalised mobile video games on IOS • Conception of various game design tools (Batch scripting), characters animations and promotional websites (HTML, CSS) ### Technical Project Manager @ Club de Don Jan 2011 – Jan 2012 | Région de Paris, France • Implementation by a 8 engineering students team of a web-based CRM (Customer Relationship Management) for a group of 16 charities, including WWF • Focus on team management and training, and weekly sessions with the clients for feedback ### Association's President @ Asian'Efrei Jan 2010 – Jan 2011 | Région de Paris, France • Leader of a 50 members association promoting Asian culture with multiple projects and events • Creation of the Aki Party, cultural festival with more than 1000 attendees and over 15 partners • Negotiations of subsidies with sponsors (Efrei, Nintendo, Konami) ### Commercial Animator @ Au Delà Du Virtuel Jan 2009 – Jan 2011 | Région de Paris, France • Showcase and sale of tech products from Apple, Ubisoft, Konami and Nintendo • Demonstrations during large scale public events and conventions such as Paris Games Week or Japan Expo (+200,000 attendees) ### Web Developer @ SNCF Jan 2008 – Jan 2008 | Région de Paris, France • Technical internship in the Railroad Infrastructure Training Department • Design and development of an intranet website to provide training materials for all employees • Creation of new graphics standard, in compliance with the company’s visual identity • Training of staff members in web technologies for future maintenance ## Education ### Engineer's degree in Computer Engineering, Virtual Reality and Images Processing EFREI - Grande école du numérique ### Exchange semester in a Computer Research Laboratory in Computer Science Research Nagoya Institute of Technology 名古屋工業大学 ### Bachelor's degree in Computer Science and Applied Mathematics Université Paris-Est Marne-la-Vallée ### Exchange semester in an American University in Computer Engineering San José State University ### IRIS BTS Higher National Diploma in Computer Science Lycée Dorian ### Mathematics in Physics and Engineering Sciences Lycée Paul Valery ## Contact & Social - LinkedIn: https://linkedin.com/in/surun - Website: https://www.surun.fr --- Source: https://flows.cv/christophesurun JSON Resume: https://flows.cv/christophesurun/resume.json Last updated: 2026-04-05