Amazon Acquires RIVR: How an ETH Zurich Lab Built the Robot That Delivers Your Packages

When the world’s largest logistics company needs to solve its hardest physical problem, it looks to Zurich. On March 19, 2026, Amazon confirmed the acquisition of RIVR, a robotics startup spun out of ETH Zurich‘s Robotic Systems Lab. The deal, with undisclosed terms, brings a Swiss-built wheeled-legged delivery robot into Amazon’s operational network of over one million machines. From six years of foundational research to a $100 million valuation to acquisition by a trillion-dollar company; RIVR’s trajectory is a case study in how Switzerland converts deep tech research into global infrastructure.

From Lab to Launchpad: The RIVR Origin Story

RIVR’s roots run deeper than its three-year corporate history suggests. The company emerged from over six years of research at ETH Zurich’s Robotic Systems Lab, led by Professor Marco Hutter. In 2024, Hutter received the Rössler Prize, ETH Zurich’s most highly endowed research award (CHF 200,000), for work that has fundamentally reshaped how robots move through the physical world. His lab has produced eight ETH spinouts to date, including ANYbotics, which builds autonomous inspection robots for industrial environments.

The founding team of RIVR, originally incorporated as Swiss-Mile, includes Marko Bjelonic, Giorgio Valsecchi, Lorenz Wellhausen, and Alexander Reske. All four were researchers at Hutter’s lab, and several were core contributors to Team CERBERUS, the international consortium that won the 2021 DARPA Subterranean Challenge. That competition, which the Washington Post called “The Super Bowl of Robotics,” required teams to deploy autonomous robots through underground mines, tunnels, and cave networks. CERBERUS, which included ETH Zurich alongside Flyability (another Swiss company), won the $2 million prize by a tiebreaker margin. The experience of building robots that navigate extreme, GPS-denied environments directly informed the technology RIVR would later commercialize for urban delivery.

The Technology: Physical AI for the Last 100 Yards

Most autonomous delivery robots roll along flat sidewalks. RIVR’s machines climb stairs. The company’s wheeled-legged design combines four articulated legs with wheels at each endpoint, enabling the robot to drive on flat surfaces at up to 15 km/h and switch to walking mode to handle stairs, curbs, gates, and uneven terrain. CEO Marko Bjelonic has described the system as a “dog on roller skates.” RIVR announced a week before the acquisition the release of RIVR TWO, the 2nd generation of their robots deployed for commercial use.

The technical foundation is what RIVR calls Physical AI: neural networks trained through a combination of reinforcement learning, supervised learning, and massive amounts of simulation data. A close collaboration with NVIDIA, showcased at GTC conferences in 2022 and 2025, accelerated the development of physics-based simulation environments that allow RIVR to train robot behaviors at scale before deploying them in the real world. The result is a robot that adapts to obstacles it has never seen before, in conditions ranging from rain and snow to dense pedestrian traffic. With a 40-litre cargo compartment and a battery range of approximately 30 km per charge, the system is designed for commercial operations, not demonstrations.

From Zurich to Austin to Amazon

RIVR’s path to acquisition followed a clear commercial escalation. In December 2023, the company closed an initial funding round of $3.5 million from Linear Capital, Agile Robots AG, and HongShan (formerly Sequoia Capital China). By August 2024, it had raised a $22 million seed round led by Jeff Bezos through Bezos Expeditions and HongShan, with the Amazon Industrial Innovation Fund and Zurich-based Armada Investment also participating.

“This step will accelerate our vision of building general physical AI through doorstep delivery, bringing robotics and AI closer to real-world deployment at scale.”

Marko Bjelonic, Co-Founder and CEO, RIVR (LinkedIn, March 19, 2026)

The investment was a strategic endorsement. Bezos Expeditions and Amazon’s Industrial Innovation Fund, a $1 billion vehicle launched in 2022 to back warehouse and logistics technologies, do not invest passively. Within months, RIVR rebranded from Swiss-Mile in January 2025 and began deploying commercially. In May 2025, it partnered with U.S. parcel delivery platform Veho to launch wheeled-legged robots on the streets of Austin, Texas. By August, it had partnered with Just Eat Takeaway.com to pilot food deliveries in Zurich’s Oerlikon district, becoming the first Physical AI-powered robot to deliver food orders in Europe. By late 2025, RIVR robots were spotted in several Swiss and US cities, including Zurich and Austin.

Why Amazon, Why Now

Amazon has deployed over one million robots across its logistics network since 2012, handling sorting, packing, and warehouse movement at scale. The gap has always been the final stretch: getting a package from the delivery van to the customer’s door. This is the most labor-intensive, least automated, and most physically variable segment of the delivery chain. Stairs, gates, weather, and unpredictable terrain make it a problem that pure software cannot solve.

RIVR addresses this directly. The acquisition allows Amazon to test how its delivery service partners can pair human drivers with autonomous robots, delegating doorstep handoffs to machines that handle terrain no sidewalk robot can manage. Amazon communicated the deal to its third-party delivery contractors with a clear message: RIVR’s technology has the potential to improve safety outcomes and the overall delivery experience. The investment-to-acquisition pipeline, from the Industrial Innovation Fund’s participation in the seed round to the full acquisition 18 months later, signals a deliberate technology scouting strategy, one that identified a Swiss lab’s breakthrough, funded its commercialization, and brought it in-house once validated.

The Swiss Robotics Pipeline

RIVR’s acquisition is not an isolated event. It is the latest proof point in a pattern that defines Switzerland’s deep tech model. According to Dealroom’s European Spinouts Report 2025, ETH Zurich ranks #1 in Europe for robotics and climate tech spinout value. Professor Hutter’s Robotic Systems Lab alone has generated eight commercial ventures. ANYbotics operates globally in industrial inspection. Flyability, a CERBERUS team partner, dominates the confined-space inspection drone market. The ecosystem converts fundamental research into commercial technology with a consistency that few clusters anywhere can match.

Switzerland invested approximately $250 million in robotics and hardware startups in 2024 and Swiss robotics number of rounds has grown over 80% from 2024 to 2025, across more than 30 rounds. Sixty percent of all Swiss venture capital flows into deep tech, the highest proportion globally. This is an ecosystem optimized for a specific kind of innovation: hard engineering problems that require years of research, specialized talent, and patient capital before they reach market. Switzerland will not build the next pizza delivery app. But it will build the robot that delivers the pizza. And when a company like Amazon needs that robot to work on real streets, in real weather, on real stairs, it turns to Zurich.

From Research Lab to Global Logistics: The Deep Tech Premium

The path from ETH Zurich’s Robotic Systems Lab to Amazon’s delivery fleet took less than three years of corporate existence, built on more than six years of foundational research. RIVR’s acquisition validates the Swiss deep tech thesis at the highest possible level: a trillion-dollar global company acquiring Swiss-born technology to solve a problem no one else had cracked. The founding team that won the “Super Bowl of Robotics” now operates inside the world’s largest logistics network.

For international investors and ecosystem actors evaluating the Swiss landscape, the signal is clear. The density of world-class research, the speed of technology transfer, and the quality of engineering talent in Switzerland produce companies that global leaders acquire not for their brand or their user base, but for their technology. That is the deep tech premium. And Switzerland delivers it.