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David UserDU
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David User

@daviduser84

Full-Stack Developer at Zeroqode who migrated Stripe billing without downtime and shipped AI-first workflows to production.

Moldova
Message

At Zeroqode, I re-engineered live billing from subscriptions to Stripe-based credits, migrating customers, balances, and legacy entitlements without service downtime. I also shipped AI-first workflows to production, replacing multi-form data entry with chat interactions, agents, and custom MCP tools.

On an independent client contract, I own end-to-end engineering and operations for a production TypeScript warehouse platform used by 20+ users. At Appassion, I migrated a live application from Bubble to Xano APIs and built aviation marketplace dashboards for aircraft listings, scheduling, and rate management.

Experience

Work history, roles, and key accomplishments

Zeroqode logoZE
Current

Full-Stack Developer

Zeroqode

Jun 2025 - Present (1 year 4 months)

Re-engineered live billing from subscriptions to Stripe-based credits, migrating customers and balances without downtime. Shipped AI-first workflows and built privacy-preserving call routing with Twilio.

IC
Current

Full-Stack Developer

Independent Client Contract

Apr 2022 - Present (4 years 6 months)

Owned end-to-end engineering for a production TypeScript warehouse platform used by 20+ users, covering frontend, APIs, PostgreSQL, authentication, and deployment. Migrated operational data from a legacy 1C system.

Appassion logoAP

Web Developer

Appassion

Dec 2023 - Jun 2025 (1 year 6 months)

Migrated a live application's data and workflows from Bubble to Xano APIs, including authentication replacement and integrity checks. Built aviation marketplace dashboards and delivered Astro websites and integrations.

Education

Degrees, certifications, and relevant coursework

Moldova State University logoMU

Moldova State University

Bachelor's Degree, Computer Science

2022 - 2025

Grade: 9.03/10

Pursued a Bachelor's Degree in Computer Science, achieving a GPA of 9.03/10.

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