Full Stack Software Developer

As the owner of Eversoftware B.V., I primarily focus on freelance full-stack development services for clients while also exploring self-initiated projects, including:

• Developed a full-stack solution for DPG Media, integrating Amazon data into their reclamefolder.nl platform using Node.js, PostgreSQL, React, Google Cloud Platform and Terraform.
• Bootstrapped and founded ConceptHub.io out of a deep passion for helping digital entrepreneurs bring their ideas to life. Loved the challenge of independently building a fast, efficient SaaS platform using the T3 Stack, React, Next.js, tRPC, Zod, Prisma, PostgreSQL, Zustand, Shadcn and Tailwind CSS.

Key accomplishments for ConceptHub.io:

• Designed and built interactive dashboards, data grids and a WYSIWYG editor with a local-first approach, enabling instant feature access without login. Cut LCP by 55% to sub-second speeds, even on slow networks.
• Developed a Next.js SaaS starter template turbo monorepository, integrating Stripe subscriptions, PostHog analytics, full i18n, a static blog, MDX docs and a back-office. Reduced project setup time from weeks to under 30 minutes, accelerating deployment of new SaaS ideas.

Through Eversoftware B.V., I combine technical expertise with a passion for creating scalable, user-focused solutions that deliver business value.

Co-founded Crypto Chaser, an iOS app for real-time cryptocurrency news alerts. Took ownership of product, infrastructure and growth as part of a three-person founding team. Thrived in the fast-paced challenges of building, learning and problem-solving. Built with SwiftUI, Node.js, GraphQL, GCP, Terraform, PostgreSQL and Firebase.

• Optimized the Apollo GraphQL API Gateway with APQ, Dataloaders and CDN caching, reducing backend load by 60% and cutting query response times to <150ms globally.
• Developed event-driven microservices for low-latency tweet processing, ensuring scalable notifications in under 3 seconds from ingestion to delivery. Implemented structured logging and correlation IDs, reducing debugging time from hours to minutes.
• Rapidly built Twitter search operator parsing to recover from an unexpected API change, preventing days of downtime.
• Developed a high-throughput notifications service with reactive streaming, load-tested to handle millions of iOS push notifications in seconds.
• Automated Apple Search Ads management, driving tens of thousands of high-intent store visits and securing the app’s first users.
• Designed and developed the iOS app UX/UI following Apple Human Interface Guidelines, using SwiftUI, Apollo GraphQL Client and Composable Architecture for robust state management and an intuitive, visually engaging user experience.

Developed a full stack solution to ingest Amazon product data into reclamefolder.nl, expanding catalog coverage and improving content. Offered a contract extension but chose to start my own company.

• Built a React-based back-office for Amazon product management, allowing marketers to efficiently manage and optimize thousands of listings.
• Developed event-driven microservices with Node.js, Apollo GraphQL, PostgreSQL, Slonik, React and fp-ts, enabling fast and robust data processing.
• Deployed to GCP using Kubernetes and Helm, managed via Terraform.
• Integrated seamlessly with a monolithic legacy system via Google PubSub, ensuring reliable data ingestion and real-time updates.