Daniel – Typescript, React, Node.js

A US fintech lending platform taken from concept to a pilot with its first enterprise client in approximately six months. Owned the core loan-sizing engine and end-to-end delivery across architecture, implementation, observability, and production support. Built with Next.js, TypeScript, Shadcn/UI, NeonDB (PostgreSQL), and Inngest.

• Architected and built the core loan-sizing engine, taking the product from zero to an enterprise pilot in approximately six months.
• Owned platform architecture, implementation, observability, and resolution of high-priority production incidents using Axiom logs.
• Integrated services including WorkOS, Inngest, Plaid, and NeonDB within a Next.js monorepo.
• Used AI-assisted development as part of the delivery workflow while retaining responsibility for architecture, implementation, and production quality.

Multi-brand European DTC e-commerce platform with Next.js storefronts, Payload CMS, and Node.js/Bun microservices. Delivered customer-facing checkout, payment integrations, tax automation, support tooling, and order-tracking experiences across markets.

• Built and scaled checkout and commerce features using TypeScript, Next.js, Payload CMS, and Node.js/Bun microservices.
• Shipped five payment integrations: Stripe, Klarna, Primer.io, Hyperswitch, and HSA/FSA flows through Flex; integrated TaxJar for multi-region tax calculations.
• Developed custom Payload CMS plugins published to npm and used across storefronts.
• Built an OpenAI-powered ticket classification service that automated triage of 80% of inbound support tickets.
• Added Apple Wallet and Google Wallet passes for order tracking and maintained automated tests with Jest, Bun, and React Testing Library.
• Served as acting tech lead during the CTO’s absence.

A large-scale B2B logistics platform connecting an automotive manufacturer with its suppliers. The project involved multiple teams and over 60 engineers, focusing on streamlining supply chain operations and enhancing coordination across the network.

• Led migration of a large React/Redux monolith to micro-frontends using Webpack Module Federation, enabling independently deployed modules owned by individual teams.
• Delivered frontend platform improvements across a 60+ engineer organization and collaborated with multiple cross-functional teams.
• Diagnosed and resolved critical production issues affecting suppliers and business operations.
• Contributed code reviews, architecture decisions, and development workflow improvements.

Development of software solutions for embedded cellular and satellite vehicle tracking devices using C language, focusing on reliable data transmission, device communication, and real-time tracking features, while ensuring comprehensive documentation and meeting departmental performance goals.

• Fully implemented the OBD II vehicular diagnostics protocol for embedded systems, including CAN and K-Line communication using ISO 15765, ISO 9141, ISO 14230, and ISO 15031 standards;
• Developed significant portions of the J1939 protocol for heavy-duty vehicle communication;
• Programmed and tested firmware on 8-bit and 32-bit microcontrollers (Freescale, NXP) using Eclipse IDE, IAR, and CodeWarrior;
• Worked extensively with communication protocols including RS-232, RS-485, I2C, CAN, SPI/SSP, among others;
• Developed drivers for external devices and inspected code for quality and reliability;
• Contributed to the main firmware of the company’s flagship product and performed various embedded software development tasks.