Lead Engineer

Cierti; Beaconsfield; Hybrid; GBP 120,000 - 160,000; Full time

Job summary

Ciertie is seeking a Lead Software Engineer to shape enterprise systems across backend services, integrations, and AI-driven development. You will own architecture while writing production-grade code and mentoring squads in Python and C#.

You will drive best practices in CI/CD, testing, and data modeling, collaborating with Product and QA to deliver scalable platforms for growth and operational excellence.

Qualifications

• Proven lead/senior engineering experience.
• Hands-on with Python and/or .NET.
• Backend, APIs, and integrations expertise.
• Experience with ERP integrations, ideally Dynamics 365.
• Strong SQL and data modelling.
• Cloud experience with AWS and/or Azure.
• DevOps, CI/CD, and Infrastructure as Code experience.
• Experience using AI coding tools to accelerate development.

Responsibilities

• Lead design and development of backend services and integration platforms.
• Own architecture across Dynamics 365, internal systems, and third-party SaaS apps.
• Write production-grade code and set engineering standards.
• Mentor engineers across Python and .NET ecosystems.
• Drive code quality, tests, CI/CD and technical delivery.
• Collaborate with Product, QA and business stakeholders to translate requirements.
• Champion practical use of AI tooling to improve velocity and quality.
• Make key architectural decisions to support growth and operations.

Skills

Python

C#

Backend engineering

APIs

Integrations

SQL

Azure

AWS

CI/CD

AI coding tools

Tools

Dynamics 365

Azure

AWS

Job description

Lead software Engineer – Python, C#, Backend, Integrations & AI-Driven Development

Hybrid

Build. Lead. Innovate.

We're looking for an exceptional Lead Engineer to join a forward-thinking technology team and play a pivotal role in shaping the future of enterprise systems, integrations, and software delivery. This is a hands-on leadership role where you'll combine deep technical expertise with architectural ownership, helping to build scalable platforms, modern integrations, and high-quality engineering practices. You'll remain close to the code whilst influencing technical direction across the business.

What You'll Be Doing

• Leading the design and development of backend services and integration platforms
• Owning architecture across Microsoft Dynamics 365, internal systems, and third-party SaaS applications
• Writing production-grade code and setting engineering standards
• Mentoring and supporting engineers across Python and .NET ecosystems
• Driving best practice across code quality, testing, CI/CD and technical delivery
• Working closely with Product, QA and business stakeholders to translate requirements into scalable solutions
• Championing the practical and responsible use of AI development tools to improve engineering velocity and quality
• Making key architectural decisions that support business growth and operational excellence

Essential Experience

• Proven experience in a Lead Engineer, Principal Engineer or Senior Engineering role
• Deep hands-on expertise in Python and/or .NET
• Strong background in backend engineering, APIs, integrations and event-driven architectures
• Experience designing and building solutions across ERP platforms, ideally Dynamics 365
• Strong SQL and data modelling expertise
• Cloud experience across AWS and/or Azure
• Practical DevOps knowledge including CI/CD and Infrastructure as Code
• Ability to balance short-term delivery with long-term architectural strategy
• Experience using modern AI coding tools to enhance software development

Why Join?

This is an opportunity to shape the engineering culture and technical direction of a growing organisation that values innovation, pragmatism and continuous improvement. You'll have the autonomy to influence architecture, adopt modern engineering practices, leverage AI tooling responsibly, and build solutions that make a tangible impact on business performance. If you're someone who enjoys solving complex technical challenges while helping engineers do their best work, then this could be for you