C++ Engineer

Digital Waffle; Royal Leamington Spa; Hybrid; GBP 63,000 - 77,000; Full time

Job summary

Digital Waffle is seeking a Lead Software Engineer to own the backend engineering function and shape the next phase of the platform.

This hands-on leadership role requires deep C++ expertise and a passion for architecture, mentoring and AI-enabled development. You’ll collaborate with Product, Front End and R&D teams to boost performance and velocity.

Qualifications

• Lead backend engineering experience across scalable systems.
• Expert C++ knowledge with STL and algorithms.
• Experience designing scalable backend services and APIs.
• Strong understanding of database systems and performance optimization.
• Experience mentoring or coaching software engineers.
• Familiarity with Agile development environments.
• Hands-on experience with AI or Machine Learning-powered solutions.
• Familiarity with LLMs and AI frameworks.

Responsibilities

• Lead the development and evolution of scalable backend systems and APIs.
• Take technical ownership of backend projects from planning through to production delivery.
• Work with Product Managers, Architects and Engineers to define technical requirements.
• Lead and mentor a team of backend engineers, supporting their development.
• Drive improvements across architecture, performance, reliability and observability.
• Identify bottlenecks and optimise database queries, services and system performance.
• Evaluate and implement AI-powered tools to improve productivity and quality.
• Help shape adoption of AI engineering practices across the team.
• Lead sprint planning, stand-ups and retrospectives with Product and Delivery teams.
• Champion secure coding, testing, code review and engineering best practice.

Skills

Lead Backend Engineering

C++ expert

API design

Database performance optimization

Mentoring/team leadership

Agile environments

AI/ML tooling familiarity

LLMs / AI frameworks

Tools

STL

Cloud platforms

Job description

A growing technology business is hiring a Lead Software Engineer to take ownership of its backend engineering function and help shape the next phase of its platform.

This is a hands-on leadership role for someone with deep C++ experience who enjoys combining technical delivery with mentoring, architecture and modern AI adoption. You’ll work closely with Product, Front End and R&D teams to improve platform performance, engineering quality and development velocity.

Salary: Up to £70k depending on experience

Location: Leamington Spa, hybrid working, 2 to 3 days per week onsite

What you'll be doing

• Lead the development and evolution of scalable backend systems and APIs.
• Take technical ownership of backend projects from planning through to production delivery.
• Work closely with Product Managers, Architects and Engineers to define technical requirements.
• Lead and mentor a team of backend engineers, supporting their development and technical progression.
• Drive improvements across architecture, performance, reliability and observability.
• Identify bottlenecks and optimise database queries, services and system performance.
• Evaluate and implement AI-powered tools to improve engineering productivity and software quality.
• Help shape the adoption of LLMs, AI-assisted development and modern AI engineering practices across the team.
• Lead sprint planning, stand-ups and retrospectives alongside Product and Delivery teams.
• Champion secure coding, testing, code review and engineering best practice.

What you'll need

• Strong commercial experience as a Lead Backend Engineer, Senior Backend Engineer or similar technical leadership role.
• Expert-level C++ experience with strong knowledge of the standard library, STL containers and algorithms.
• Experience designing and maintaining scalable backend services and APIs.
• Strong understanding of database systems and performance optimisation.
• Previous experience leading, mentoring or coaching software engineers.
• Experience working within Agile engineering environments.
• Hands-on experience developing, integrating or deploying AI or Machine Learning-powered solutions.
• Familiarity with LLMs, AI-assisted development tools and modern AI frameworks.
• Understanding of AI architecture including prompt engineering, vector databases, RAG and AI service integration.
• Experience evaluating and introducing AI tools that improve developer productivity.
• Strong problem-solving skills with a proactive and pragmatic approach to engineering.

Nice to have

• Experience contributing to hiring and onboarding technical teams.
• Exposure to hardware-integrated software, access control, security or workforce management platforms.
• Experience improving engineering observability, reliability and secure development practices.

This role would suit an experienced C++ engineer who wants to combine hands-on development with technical leadership and play a key role in introducing modern AI capabilities into an established engineering environment.