resume

NET Backend Developer

Coolblue.nl

I design and maintain backend systems in the Payments domain—owning services that handle payments, refunds, and insurance. I build customer-facing features, modernize legacy flows, and enhance system reliability across high-volume transaction pipelines.

• Designed and owned the Payment Session Service to unify the tracking of multi-provider payments across Checkout and Invite to Pay flows, enabling seamless handling of split.
• Delivered PIN refund capability via Adyen, enabling in-store refund and enhancing customer experience at physical locations.
• Contributed to Buckaroo PayPerEmail integration for German customers, supporting direct debit flows that increased subscription rates for white goods.
• Contributed to integrating Cover Genius, replacing a legacy insurance provider with tailored insurance and warranty offerings at checkout, unlocking new revenue streams.
• Configured a data pipeline to power analytics on insurance uptake, enabling cross-team insights into product insurability.
• Led the refactoring of the back-office service managing legacy payment tables with 103M+ records, enhancing data accuracy and enabling advanced analytics.
• Enhanced logging and diagnostics in the back-office service, enabling swift resolution of a critical Black Friday issue involving duplicate payment prompts.
• Introduced Dockerized Oracle and DynamoDB integration tests into CI pipelines (TeamCity), improving test coverage and preventing regressions in critical flows.
• Led the first micro front-end migration in the domain, moving My Discounts Page from legacy PHP to Next.js/React, enabling users to view product vouchers via a modern UI.
• Actively contributed to code quality by performing thorough code reviews, ensuring adherence to companywide development guidelines, and resolving technical debt in multiple services to prevent bugs and accelerate delivery.

Software Engineer II

Integrant, Inc.

Delivered enhancements to BD.ASTA and VisionRx; optimized workflow performance; remediated UI, database, and hardware integration stability issues; and enabled trusted, frictionless healthcare tools.

• Implemented a hierarchical tree view UI in ASTA with direct links to device maintenance actions, improving navigation and usability.
• Reduced report export time in ASTA by optimizing SQL joins and transformation logic for large datasets.
• Delivered sealed package dispensing in VisionRx by integrating existing OpenCV logic with WCF services to coordinate hardware, inventory, and UI state.
• Resolved GPU-bound rendering bottleneck in VisionRx, improving performance on low-end clinic devices.
• Created concise architecture documentation in VisionRx to align remote teams on system design and decisions.

Software Engineer

Cegedim

Delivered VisionAnywhere Repeat Dispensing & Therapy Plans; maintained Optum & OptimiseRx API integrations; implemented feature toggles; aligned release planning with leadership; and championed Conventional Commits.

• Crafted Repeat Dispensing and Therapy Plans features in VisionAnywhere, elevating patient care for chronic diseases.
• Extended and maintained Optum and OptimiseRx API integrations to enhance clinical decision support.
• Designed a company-wide feature toggle system to enable controlled rollout and improve release agility.
• Collaborated with the PM and Head of R&D during pre-design discussions to ensure feature toggles were planned early and aligned with delivery strategy.
• Delivered a tech talk to over 100 attendees on adopting Conventional Commits for consistent versioning and change tracking.

Jr. Fullstack Web Developer

Lumin Soft

Delivered .NET Core/Angular real-estate & supply-chain modules, a digital-wallet MVP with Cowpay; optimized IIS deployments, standardized Git Flow, and deployed Swagger API docs.

• Built backend and frontend for real estate and supply chain products and developed an MVP for a digital wallet application.
• Integrated the Cowpay payment gateway to enable secure in-app transactions.
• Adopted Git Flow, wrote Swagger-based API docs, and improved manual deployment reliability using IIS.

Intern. .NET Developer

ERTAQY

Delivered a raw SQL/.NET HR attendance-tracking system and optimized CMS usability through targeted feature maintenance.

• Contributed to the delivery of an HR system using raw SQL and .NET to support attendance tracking.
• Maintained existing features built in a CMS to improve usability.

BSc

Faculty of Computer Science

Computer Science

Xpense

Financial Tracker and Advisor.

• Track expenses
• Manage budgets