Daniel – Typescript, React, Node.js

A Loans Management FinTech platform integrates with various services, such as WorkOS, Inngest, Nuqs, Plaid, and Axiom, for logging. The project leverages a monorepo architecture and ShadcnUI components, with heavy usage of AI tools (Cursor, AmpCode, Claude Code, and others) to accelerate development, achieving high productivity and success rates.

• Delivered over 100,000 lines of code and completed 112 pull requests within 6 months;
• Investigated and resolved high-priority production issues using Axiom logs;
• Designed and implemented complete loan sizing features and contributed to the overall application architecture;
• Experimented with multiple AI-assisted development tools (Cursor, Ampcode, Windsurf, Claude Code, Gemini) to increase efficiency and accuracy;
• Applied modern technologies and frameworks including Nuqs, ShadcnUI, NeonDB, Next Safe Action, WorkOS, and Inngest to enhance system performance and maintainability.

Full-stack development on one of the biggest e-commerce sites in Europe with cutting-edge tech.

• Implemented multiple payment gateways, including Stripe, Klarna, Primer.io, HSA/FSA (with Flex), and Hyperswitch;
• Integrated tax calculation using TaxJar;
• Connected Next.js e-commerce application with Payload CMS and developed custom plugins for NPM;
• Built Node.js and Bun microservices with Hasura and Drizzle as database connectors; implemented a ChatGPT-based service for ticket classification;
• Fully implemented Apple and Android order management systems and wallet passes;
• Maintained well-tested code using Bun/Jest and React Testing Library;
• Managed the development team as acting tech lead in 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.

• Migrated a large React/Redux monolithic application to micro front-ends using Webpack Module Federation;
• Collaborated with multiple cross-functional teams to deliver features and maintain code quality;
• Identified, prioritized, and fixed high-impact production bugs to ensure system stability;
• Assisted in code reviews, shared best practices, and improved development workflows;
• Contributed to architecture discussions to enhance modularity, scalability, and maintainability.

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.