Senior Backend Engineer - Offline-First POS & Payments

Atoms; Los Angeles (CA); On-site; USD 167,000 - 230,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401(k) plan

Time off

Job summary

Otter POS is hiring a backend engineer to design, scale, and maintain the services behind orders, payments, and device synchronization across Android tablets in kitchens and at the counter. You will focus on reliability and API design in distributed systems.

The role requires 3+ years of software engineering, a CS-related degree, and strong fundamentals in backend design. Collaboration with Android engineers and product teams is essential, and experience with Java/Kotlin is valued.

Qualifications

• Bachelor’s degree in Computer Science or equivalent.
• 3+ years of professional software engineering experience.
• Deep understanding of backend system design, APIs, data stores, microservices, concurrency, and distributed systems.
• Our stack heavily utilizes Java and Kotlin, but we care more about your engineering fundamentals than the specific languages you've used.
• Experience with relational and/or NoSQL databases (e.g., PostgreSQL, CockroachDB, Redis).
• Experience with cloud platforms like AWS, Google Cloud, or Azure.

Responsibilities

• Design, build, and maintain Java backend services for order lifecycle, payments, device sync, and restaurant workflows.
• Design and optimize APIs and event-driven systems so POS devices, kitchen displays, and cloud services stay consistent with low latency.
• Build systems that keep working offline and sync across multiple devices in a facility.
• Work with Android engineers, product managers, and other teams to ship systems used in live restaurants.
• Keep code quality high through testing, code reviews, observability, and owning what you ship in production.

Skills

Java backend

Kotlin

APIs

Distributed systems

Education

Bachelor’s degree in Computer Science

Tools

PostgreSQL

CockroachDB

Redis

AWS

Job description

Otter POS is hiring a backend engineer to design, scale, and maintain the services behind orders, payments, and device synchronization across Android tablets in kitchens and at the counter. You will focus on reliability and API design in distributed systems.

The role requires 3+ years of software engineering, a CS-related degree, and strong fundamentals in backend design. Collaboration with Android engineers and product teams is essential, and experience with Java/Kotlin is valued.