Our client is a leading designer and manufacturer of complex, bespoke automation machinery used across advanced manufacturing sectors. They deliver highly engineered, one‑off automated systems, integrating cutting-edge control technologies, robotics, and precision motion. Due to continued growth and increased project complexity, they are seeking a Principal Software Engineer to lead software delivery across major automation projects.

⭐ Role Overview

As the Principal Software Engineer, you will act as the senior technical authority for software across complex automation projects. You will lead software design and implementation, validate Software Design Specifications (SDS), oversee Source Code Reviews (SCRs), and ensure software is delivered to the highest engineering standards.

This role is central to successful delivery: you will guide engineers, resolve technical issues, manage task delegation, and ensure best practices are followed from design through commissioning.

Key Responsibilities

Lead and oversee all software implementation for major automation projects.
Create, review, and validate Software Design Specifications (SDS) to ensure accuracy and completeness.
Delegate development tasks and maintain oversight of progress, quality, and compliance.
Lead Source Code Reviews (SCRs) across all major software modules.
Drive the software commissioning phase for large/complex systems, integrating software into wider commissioning activities.
Act as the senior engineering authority—troubleshooting, resolving issues, and guiding decision-making.
Mentor, coach, and develop engineers to elevate technical performance standards.
Ensure strict adherence to established development, documentation, and commissioning processes.
Collaborate closely across mechanical, electrical, production, commissioning, and project management functions.

Outputs & Deliverables

Software systems delivered on time, to specification, and fully aligned with project standards.
Validated and compliant SCRs, SDS documents, and supporting technical documentation.
Fully commissioned automation systems with complete testing and documentation.
Clear task delegation and consistent technical leadership across software teams.
Occasional on-site support for commissioning, troubleshooting, and customer technical engagement.

Required Experience & Skills

Essential

Expert experience developing and delivering control software for automated machinery.
Proven leadership delivering major automation software projects end-to-end.
Deep understanding of SDS creation, validation, and project application.
Strong knowledge of automation safety, compliance, and system-level diagnostics.
Experience leading commissioning and supporting escalations on complex systems.

Technical Essentials

Expert-level PLC/HMI development across multiple platforms (e.g., Siemens TIA Portal, Rockwell Studio 5000, etc.).
Strong competence managing commissioning processes and resolving complex issues.
Highly proficient in SCR methodologies and SDS interpretation.
Experience with advanced automation technologies such as robotics, vision systems, and data-driven automation.

Desirable

Experience delivering multi‑disciplinary automation projects.
Technical expertise in robotics, vision systems, or motion control tuning.
Familiarity with functional safety standards, compliance frameworks, and software lifecycle management.
Degree in Engineering, Software Engineering, Electrical Engineering, or related field.

Collaboration & Reporting

Works closely with:

Mechanical Engineering, Electrical Engineering, Production & Build, Commissioning, Project Management, and Aftercare/Service Teams.