Senior Mobile Engineer

Jitsu

5d•$125,000 - $150,000•Remote

About The Position

Jitsu is seeking a Senior Mobile Engineer to lead the design and architecture of mission-critical applications used by delivery partners and operations teams in the field and in logistics facilities. The role owns solutions to operational problems from discovery through design, delivery, and adoption, ensuring that the problems are resolved in practice. The engineer will spend time with operations leaders, site leads, warehouse teams, and delivery partners, potentially visiting warehouses, working a sort shift, or accompanying delivery routes to understand their needs. The position focuses on Jitsu's Flutter apps, which support millions of shipments each year. The engineer will build reliable, performant mobile experiences for offline use, fast scanning, dependable location tracking, and releases that operations can rely on. The role also works across the stack, addressing backend services, data, tooling, or process changes as needed and collaborating with the broader engineering team. The engineer will help shape how AI capabilities are applied to the company's tools and workflow, and will mentor teammates while setting mobile technical direction and quality standards.

Requirements

5+ years building and shipping production iOS and Android apps, with deep Flutter expertise.
Solid mobile architecture skills, including state management, modular structure, and patterns for maintaining a growing codebase.
Experience designing and consuming REST and gRPC APIs, and a working understanding of distributed systems.
Track record of building performant, reliable features for a large user base alongside other engineers.
Ability to own solutions end to end and work beyond one's immediate area of expertise.
Demonstrated ability to ship work outside one's core expertise by working effectively with AI tools.
Good judgment about AI output, including recognizing errors and providing AI tools with appropriate context.
Clear communication and the ability to explain thinking to technical and non-technical audiences.

Nice To Haves

Native iOS or Android SDK experience with Swift or Kotlin.
Experience integrating on-device or cloud AI/ML features into mobile apps.

Responsibilities

Understand operational problems by engaging with operations leaders, site leads, warehouse teams, and delivery partners; this may include visiting warehouses, working a sort shift, or riding along on a delivery route.
Own problems from discovery through design, delivery, and adoption, and follow through until solutions work in the field.
Build and maintain Flutter apps that support offline operation, fast scanning, reliable location tracking, and dependable releases.
Address needs across the stack, including backend services, data fixes, tooling, and process changes, and collaborate with the broader engineering team.
Help determine how AI capabilities can improve tools, workflows, and engineering practices, and put useful ideas into practice.
Mentor teammates, set mobile technical direction and quality standards, and improve the effectiveness of other engineers.