Principal Software Engineer jobs in Slough

Principal Software Engineer Fully Remote | Permanent | Competitive Salary + Benefits Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. This is a rare opportunity to combine hands-on development with strategic influence, guiding architecture decisions and shaping...

Join OCI’s Edge Security team as a Principal Engineer to architect and deliver cloud-scale DDoS protection. You’ll lead design for high-performance detection and mitigation systems, drive automation and operational excellence, and set the technical direction for customer-facing DDoS capabilities across OCI’s global edge. This role requires deep expertise in Linux networking data path and...

Role: Senior, Staff & Principal Engineers Salary range: 90 - 160k (+ equity) Senior: 90-115k | Staff: 120-135k | Principal: 140-160k Location: Central London (x3 days per week onsite - Tue/Wed/Thurs) Tech stack includes: Typescript, React, Material UI, NodeJS, Postgres, AWS (Serverless) Current team size: 35 Engineers We're working with a B2B SaaS startup company based in London, an AI...

You will help them stay ahead of the curve by solving both technical and sociotechnical problems. You would be joining a squad of Principal engineers with different expertise that serves as a centre of excellence to the 16+ engineering teams in the wider engineering function.

Senior Backend Engineer | London | £100,000 - £160,000 | Python | FastAPI | Systems Location: London based - hybrid Salary: £100,000 - £160,000 + equity Tech Stack: - Backend: Python (FastAPI) - Cursor, Claude Code - AWS Are you a backend engineer who cares more about building robust systems than chasing AI hype? We are working with a recently funded Series A technology company building AI...

Principal Engineer (Education) Competitive + Bonus + Benefits UK, Remote Permanent full time Summary The Principal Software Engineer role is a key role in the IRIS Engineering Organization and is one of the keystones in the delivery of World-Class Customer Products, Developer experience and the advancement of our technology xujxxms in .NET and C#. As a Principal Software Engineer, your...

You will be in a client-facing role, attending project meetings and disseminating the brief to the project team. - Work with the team leader to help monitor fee expenditure, resources and work delivered. - Mentor and support our ‘next gen’ professionals, including apprentices and graduates.

Principal ILS & Obsolescence Engineer Introduction: This organisation sits at the heart of some of the UK’s most critical defence and maritime programmes, delivering technology that genuinely matters. They’re now strengthening their Integrated Logistics Support capability with a senior engineer who can shape strategy, guide teams, and influence delivery across complex systems. Role...

🌍 Join Us as a Principal Geotechnical Engineer – London | Global Projects, Real Impact Are you ready to work on some of the world’s most exciting engineering projects? Rendel, part of the Ingérop Group, is a leading international, multidisciplinary design and engineering consultancy. Headquartered in London with offices in Birmingham, Bristol, and Sydney, we’ve been shaping the world since 1838...

Please note, this company is not able to offer a sponsorship visa at this time. We are seeking an experienced Principal or Associate Mechanical Design Engineer to join this dynamic team in the field of Building Services Engineering. As a key member of the organisation, you will play a crucial role in designing and optimising mechanical systems for large-scale projects. The successful candidate...

You must be confident and feel comfortable conversing on the telephone, via email and face-to-face as well as to be able to write concise reports. - Good general IT skills to include use of a range of MS applications Word/Excel/Outlook/Teams.

You will be reliable, self-motivated and flexible.

You will work in close collaboration with a highly-functioning team of software, electronics, algorithm engineers and product managers.

numi is proud to have partnered with a multiple award-winning, high-growth fintech company. We have made multiple hires to this company, it is a place for top-tier engineers who are also excellent colleagues. As they continue to grow, they're looking for an exceptional IC (Individual Contributor) to solve some of their most complex problems. This is an opportunity to be a top technical voice,...

Job Title: Principal DevOps Engineer - AWS/Terraform/Kubernetes Type: Permanent Location: Fully remote (must be UK-based) Salary: £90-110K DOE Our client are growing their team and are looking for a Principal DevOps Engineer to contribute to the development and maintenance of our cloud infrastructure, help with the definition of best practices for infrastructure management and to support...

Be the Driving Force in Power Projects – Principal Engineer (Civil/Structural) BakerHicks are looking for a Chartered Principal Civil or Structural Engineer to lead the delivery of power sector projects from either our London or Scotland office. This is a senior role where you’ll take ownership of projects, guide multi-disciplinary teams, and act as the key point of contact for clients. Key...

You will contribute to the evolution of a sophisticated broadcast control platform responsible for orchestrating complex media workflows across SDI, IP, and hybrid environments. It’s a chance to work on mission‑critical software with a business recognised globally for excellence in live production technology.

You will support in reverse engineering and deep understanding of vulnerabilities, including impact analysis and automation.

You must relish the challenge of findings critical vulnerabilities in complex software binaries through automation and manual practices. Creativity is highly valued; being able to find novel vulnerabilities is essential in this role.

Control Systems Software Engineer Introduction: This organisation designs and delivers mission-critical technology that underpins some of the UK’s most complex and regulated environments. This role sits at the heart of long-life, safety-critical systems that directly support national defence operations. Role Overview: - Location: London (hybrid working available) - Package: Competitive...

You will be in a client-facing role, attending project meetings and disseminating the brief to the project team. - Work with the team leader to help monitor fee expenditure, resources and work delivered. - Mentor and support our ‘next gen’ professionals, including apprentices and graduates.

You will have a good technical knowledge in the primary discipline of fire safety design.

You will be IT literate with a working understanding of fire modelling software analysis tools.

You should have excellent communication skills and an interest in working in a team environment.