Software Engineer
Posted 20 Nov 2025
Advertised as “Senior Software Engineer – Backend”
BranchFactor Summary
The original posting with the fluff stripped out
- Expected experience
- 5+ yrs
- Management level
- Individual contributor
- Employment
- On-Site
- Contract
- Full-time
No salary listed for this role.
RIVR, part of Amazon is a robotics company pioneering Physical AI through real-world doorstep delivery. Founded in 2024 as an ETH Zurich spin-off, RIVR developed wheeled-legged robots designed to operate in complex, unstructured environments such as stairs, gates, doors, and uneven urban terrain. We believe that achieving general physical intelligence requires solving real customer problems in the real world, where robots can learn from rich operational data at scale.
Following our acquisition by Amazon in March 2026, we are continuing this mission with greater reach and speed. By combining custom robot hardware, onboard autonomy, and cloud-based coordination, RIVR, part of Amazon is building the next generation of safe, reliable autonomous robots for last-mile delivery
Job Description As our next Senior Backend Engineer you will focus on the design, development, and operation of the server-side systems that power our cutting-edge robotics delivery platform. This role involves building robust, scalable microservices and integrations crucial for fleet operations, process integrations, and data processing in a cloud-native environment. You will play a key part in translating complex business requirements into reliable and efficient backend solutions.
What you’ll be doing
- Design and implement backend services for integrating RIVR's platform with our customers’ systems, to provide delightful delivery experiences.
- Develop and enhance the backend infrastructure for our robot operations platform.
- Develop backend components to aggregate Key Performance Indicators (KPIs), providing insights into platform performance and business value.
- Contribute to the overall architecture, reliability, and scalability of our backend systems within a containerized microservices context.
- Collaborate closely with frontend, robotics, and infrastructure engineers to deliver end-to-end features
What you must have
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Approximately 5 years of professional experience designing, building, deploying, and operating backend systems in a Service-Oriented Architecture (SOA) context. You have production experience with:
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Strong experience with Typescript, Java, C++ and/or Python
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Service decomposition.
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API design.
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Different interaction patterns (e.g. RPC, publish/subscribe, event-driven).
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At least two database technologies