Whizz
Whizz
Whizz provides electric bike rentals and sales designed primarily for food delivery work. Operating across the logistics, food and beverage, and transport sectors, the company offers flexible payment options such as monthly rentals and split payments, helping delivery drivers access e-bikes without requiring a Social Security Number. Its services include maintenance support, safety-focused features, and multilingual customer assistance, giving riders a practical way to navigate traffic and support efficient deliveries.

Senior Tech Lead, Russian Speaker — Whizz (Remote, Serbia)

Lead Whizz’s mobility platform architecture, databases, deployments, and engineering standards. Guide developers building tools for delivery drivers.

Description

  • Own Whizz’s system architecture and technical roadmap.
  • Review every pull request before merging and maintain consistent review standards.
  • Design and maintain database architecture across MySQL and PostgreSQL.
  • Manage Docker images, deployments, and runtime environments.
  • Advance AI-assisted development through team agent instructions, prompts, and review rules for generated code.
  • Translate product requirements into technical tasks and mentor backend, frontend, and mobile developers.
  • Lead incident response and deliver fixes addressing underlying causes.

Requirements

  • At least 6 years of backend development experience and 2 or more years leading a team.
  • Expertise in PHP 8, with the ability to work across PHP, TypeScript with Vue/Nuxt and React/Next.js, and Flutter.
  • Strong database architecture experience, including data modeling, migrations, and query optimization in MySQL and PostgreSQL.
  • Production experience with Docker.
  • Daily experience using AI development tools such as Claude Code, Cursor, Copilot, or similar, plus experience creating team agent instructions.
  • A disciplined code-review practice focused on logic, data safety, and security defects as well as style.
  • Experience with Stripe or a comparable payment provider and REST API integrations.
  • Native Russian and fluent English.
  • Availability to work strictly on New York time, including EST/EDT.
  • Hands-on experience with ProcessWire.
  • Experience developing Flutter applications and releasing them through app stores.
  • Background in subscription billing or fintech.
  • Experience with CapRover or another Docker PaaS, along with CI/CD setup experience.

Benefits

  • Competitive salary and benefits package.
  • Full ownership of the technical stack with direct access to the founder.
  • Remote work aligned with a New York schedule.
  • Opportunity to contribute to a company transforming the transportation industry.

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