Nick Paine

Nicholas "Nick" Paine is an American roboticist, co-founder and chief technology officer of Apptronik, and the developer of the UT Series Elastic Actuator, a compact high-performance actuator design adopted by NASA Johnson Space Center and other humanoid-robotics programs in the United States and internationally. He completed his Bachelor of Science, Master of Science, and PhD degrees in Electrical and Computer Engineering at the University of Texas at Austin, with doctoral research on high-performance series-elastic actuation supervised in collaboration with the UT Austin Human Centered Robotics Lab. As of May 2026, he directs the engineering organization at Apptronik through the commercial scale-up of the Apollo humanoid robot.

At a glance

• Education: Bachelor of Science, Master of Science, and PhD in Electrical and Computer Engineering at UT Austin (PhD conferred in 2014).
• Current role: Co-founder and Chief Technology Officer of Apptronik since 2016.
• Notable prior affiliations: NASA Johnson Space Center DARPA Robotics Challenge team (2012 to 2013); postdoctoral fellow, Human Centered Robotics Lab, UT Austin (2014 to 2015).
• Key research contributions: Development of the UT Series Elastic Actuator; co-author of the Valkyrie actuator-control paper (Journal of Field Robotics, 2015); co-author of DRACO bipedal platform and Astra manipulation-platform work.
• LinkedIn: nipaine
• Google Scholar: Nicholas Paine.

Origins

Paine completed his undergraduate, master's, and doctoral education at UT Austin in Electrical and Computer Engineering, with all three degrees from the same institution. His graduate research concentrated on the design of high-performance series-elastic actuators for legged robots, a category of compliant actuation that combines a stiff motor with a deliberately compliant transmission element to enable force control, impact tolerance, and safer human-robot interaction. The doctoral thesis, titled "High-performance series elastic actuation," became one of the more-cited UT Austin robotics dissertations of the early 2010s and produced the UT Series Elastic Actuator design that was subsequently adopted across multiple external programs.

The doctoral period overlapped with the NASA Johnson Space Center DARPA Robotics Challenge collaboration. From 2012 to 2013, Paine was a member of the NASA-JSC team that developed the Valkyrie humanoid robot, contributing to the design and the compliant-control software for Valkyrie's legs and arms. The Valkyrie robot was NASA's first bipedal humanoid platform and was developed in response to the DARPA Robotics Challenge, the disaster-response competition organized after the Fukushima Daiichi reactor incident. The actuator-control work from that period was published in the Journal of Field Robotics in 2015 under the title "Actuator control for the NASA-JSC Valkyrie humanoid robot: A decoupled dynamics approach for torque control of series elastic robots."

Career

Paine completed the PhD in 2014 and continued as a postdoctoral fellow at the Human Centered Robotics Lab at UT Austin from 2014 to 2015, working on forced-convective cooling of electric motors and on embedded-system design for high-performance humanoid actuators. The postdoctoral period concentrated on the engineering questions that would later become the technical foundation for Apptronik: how to push electric actuators to the power density and thermal performance required for full-scale bipedal humanoid operation without resorting to hydraulics or to thermally limited designs that constrain operating duty cycles.

The founding decision in 2016 paired Paine with Jeff Cardenas (the commercial lead), Luis Sentis (the academic anchor and Paine's lab director), Bill Welch, and Bill Helmsing. Apptronik was incorporated in March 2016 with a strategic premise that the bipedal-humanoid commercial market would open within a decade as enabling technologies converged, and that the UT Austin lineage in series-elastic actuation and whole-body control positioned the team to capture the hardware-and-deployment layer of that market. Paine has directed the engineering organization since founding, with responsibility spanning actuator design, whole-body control, mechanical and electrical engineering, and the manufacturing engineering required to move from research prototypes to commercial production.

The first seven years of Apptronik produced multiple research humanoid platforms that informed the eventual Apollo design. The DRACO and DRACO 3 bipedal robots demonstrated dynamic walking with the UT actuator lineage and served as research platforms for the academic community. The Astra robot was a humanoid upper body for dexterous bimanual manipulation, force-controlled and tested for supply-chain applications. The Apex and Sagittarius force-augmentative exoskeletons applied the same actuator and control technology to wearable-robotics applications. The August 2023 Apollo reveal consolidated the engineering lineage into a single commercial product: a five-foot-eight-inch electric humanoid with swappable batteries, two-arm grasp-and-manipulation, and force-controlled compliant actuators for safe human-collaborative operation.

The 2024 to 2026 commercial period has been concentrated on production scale-up. Apptronik announced a manufacturing partnership with Jabil and has run named pilots at Mercedes-Benz (industrial-manufacturing) and GXO Logistics (warehouse-and-logistics). The Google DeepMind collaboration announced in late 2024 added an AI-stack partner for the perception-and-policy layer above the Apptronik-engineered hardware. Industry coverage has consistently described Paine as one of the longest-tenured continuous engineering leaders in the American humanoid cohort, with a research-to-commercial trajectory that runs uninterrupted from the 2012 Valkyrie team through the 2026 Apollo production ramp.

Affiliations

• UT Austin: BS, MS, PhD student in Electrical and Computer Engineering, late 2000s to 2014.
• NASA Johnson Space Center DARPA Robotics Challenge team: contributor, 2012 to 2013.
• Human Centered Robotics Lab, UT Austin: Postdoctoral fellow, 2014 to 2015.
• Apptronik: Co-founder and Chief Technology Officer, 2016 to present.

Notable contributions

• UT Series Elastic Actuator (PhD thesis, 2014). The compact high-performance series-elastic actuator design that became the foundation for the UT Austin humanoid-robotics actuator lineage and was adopted by NASA-JSC, IHMC, and several international research labs.
• Valkyrie actuator-control paper (Journal of Field Robotics, 2015). Co-author of the actuator-control architecture for NASA's first bipedal humanoid, developed during the DARPA Robotics Challenge collaboration.
• Apptronik co-founding (March 2016). Co-founder and CTO; direct responsibility for the engineering organization across actuator design, whole-body control, mechanical and electrical engineering, and manufacturing engineering.
• DRACO and DRACO 3 bipedal platforms (2018 to 2022). Co-lead on the research-bipedal lineage that demonstrated dynamic walking with the Apptronik actuator design and served as research platforms for the academic community.
• Astra dexterous manipulation platform (early 2020s). Co-lead on the humanoid upper-body design for bimanual force-controlled manipulation, used in supply-chain and industrial application research.
• Apex and Sagittarius exoskeletons. Co-lead on the force-augmentative exoskeleton applications of the Apptronik actuator and control stack.
• Apollo humanoid robot (unveiled August 2023). Co-lead on the engineering of the commercial humanoid platform, consolidating the prior research-platform engineering lineage into a production design.

Open questions

• Production scale-up. Apptronik's stated trajectory through 2026 and 2027 requires moving Apollo from prototype quantities to commercial production volumes consistent with named-customer deployment commitments. The first credible disclosure of per-unit production cost or production-line throughput from any humanoid program will reset public framing of the category, and Paine's engineering organization is in the critical path for whether Apptronik becomes that disclosing company.
• Hardware-software co-design vs partner-stack. The split-stack strategy at Apptronik means the engineering team owns hardware and low-level control, while Google DeepMind supplies the AI control layer. The architectural and interface decisions that govern that hand-off are technically consequential; how Paine's organization manages the boundary as DeepMind's robotics models evolve, and as Apollo's hardware constraints shift in successive revisions, will shape commercial performance.
• Actuator competitive position. The UT Series Elastic Actuator was a leading design in the early-2010s research humanoid era. Whether the descendant actuator technology in Apollo maintains the same relative advantage in 2026 against Figure AI, Boston Dynamics Atlas (all-electric, 2024 onward), Tesla AI Optimus, and the Chinese humanoid cluster's actuator designs is one of the more material engineering questions in the category.
• CTO durability in scale-up. The technical-co-founder-CTO model historically faces transition pressure as a hardware company moves from research and pilot phases into mass-production and global deployment phases. Whether Paine's role evolves, broadens, or transitions through 2026 to 2028 will be a watchable internal signal.

Sources

• Apptronik leadership page. Official company description of Paine's role and educational background.
• Nicholas Paine, ResearchGate profile. Publication record and the UT Austin research lineage.
• Nicholas Paine Google Scholar profile. Citation record for the actuator and humanoid-control publications.
• High-performance series elastic actuation. The UT Austin PhD thesis on the UT Series Elastic Actuator design.
• Actuator control for the NASA-JSC Valkyrie humanoid robot. The 2015 Journal of Field Robotics paper from the DARPA Robotics Challenge collaboration.
• Apptronik's DRACO featured in IEEE Spectrum. Coverage of the DRACO bipedal platform.
• Apptronik unveils Apollo humanoid robot, The Robot Report. August 2023 coverage of the Apollo product reveal.
• Companion profile: Apptronik for the broader company context.