Principal Platform Software Engineer

Job description

All3 is transforming how buildings are conceived, developed, and delivered. We combine AI-powered design with robotic prefabrication and on-site assembly to build custom architecture at the cost and speed of mass production - unlocking even the most complex sites.

We’re currently seeking a Principal Platform Software Engineer to join our team, focused on shaping the system architecture and delivering software that defines the mobility, manipulation, autonomy, and reliability of our robotic systems.

Responsibilities:

• Defining software architecture for robotic mobility, manipulation, autonomy, and platform tooling;
• Developing and maintaining production-grade software in Modern C++ and Python for embedded Linux environments;
• Designing APIs, abstractions, and reusable libraries that support reliable and scalable robotic systems;
• Building software for task and behaviour orchestration, including state machines, behaviour trees, mission planning, and fault handling;
• Developing tooling for visualisation, logging, telemetry, performance analysis, and debugging;
• Supporting distributed communication systems, message-passing middleware, and data marshalling pipelines;
• Integrating device drivers and middleware across heterogeneous compute architectures;
• Setting technical standards, reviewing designs, and making pragmatic trade-offs to meet business goals;
• Leading technical discussions across robotics, hardware, controls, and product teams;
• Applying systems engineering principles to requirements analysis, architecture design, verification, and validation.

Expertise:

• Expert-level experience in production-grade software development with Modern C++ and Python;
• Strong experience working in embedded Linux environments;
• Deep understanding of API design, software abstractions, and library development;
• Experience designing reliable and scalable software for industrial operating environments;
• Advanced experience in robotic software development, ideally in legged robotics;
• Knowledge of locomotion, whole-body control, or state estimation systems;
• Experience with distributed heterogeneous compute architectures, including GPGPU and CUDA;
• Strong understanding of pub/sub communication systems, telemetry, logging, and visualisation pipelines;
• Experience with task orchestration, behaviour trees, state machines, mission planning, or fault handling;
• Strong systems engineering knowledge, including requirements analysis, architecture design, verification, and validation;
• First-principles approach to problem-solving;
• Strong communication and technical leadership skills, with the ability to work across functional boundaries.

We offer:

• Chance to be a part of a large-scale project;
• Team driven by impactful cause;
• Hybrid format of work with the lab located in Park Royal;
• Private dental or full medical (dental treatments aren’t covered) insurance;
• Flexible working schedule;
• 28 days of annual leave.

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

06-05-2026

Profession type

Technical

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English