Sander J.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I'm a full stack developer with expertise in crafting sophisticated business applications that solve complex operational challenges. My development journey began with Python automation and evolved through building executable programs to creating comprehensive web applications. Development Experience * Recent Projects: Appointment booking systems, attorney classification software for recruitment, and inventory management automation suites * Technical Skills: Remix (React-based full stack Javascript/Typescript framework), Flask, complex queue systems, custom logging solutions * Integration Expertise: Multiple API integrations including Dropbox, Amazon, Walmart, YouTube, S3 Infrastructure Background My enterprise-level infrastructure background provides a strong architectural perspective for my development work: * Network engineering (F5 load balancers, Checkpoint firewalls, Cisco/Juniper networking) * Platform management and automation * Architectural design for scalable applications I approach each project methodically, analyzing requirements thoroughly to identify technical challenges upfront. This allows me to deliver efficient, well-structured solutions that precisely address business needs while anticipating potential obstacles.