Senior Software Engineer - AI Native (MUST HAVE AI EXPERIENCE, C#, REACT, TYPESCRIPT AND AZURE)

We are seeking a hands-on Senior Software Engineer with strong full-stack expertise across TypeScript/React, C#/.NET and modern cloud-native technologies. This role is responsible for designing, building and delivering software solutions end-to-end, owning the development lifecycle from technical specification through implementation, testing, deployment and continuous improvement., As an AI-native engineer, you will use approved AI-assisted development tools and agentic AI workflows to accelerate software delivery while maintaining high standards of quality, security and engineering excellence. This is a Senior individual contributor position focused on software engineering and technical delivery rather than people or project management.

Key Responsibilities

• Design, build, test, deploy and support software solutions across the full technology stack.

• Develop scalable applications using TypeScript, React, C#/.NET and related technologies.

• Translate business requirements into clear, structured and testable technical specifications, applying Spec-Driven Development principles.

• Write secure, maintainable and high-quality code that follows modern engineering standards and best practices.

• Design and build RESTful APIs, integrations and microservices focused on performance, reliability and scalability.

• Deliver solutions spanning frontend, backend and data layers using clean architectural principles.

• Leverage AI-assisted development tools and agentic AI workflows to accelerate coding, testing, debugging, documentation and delivery.

• Take ownership of validating and assuring the quality of both human-written and AI-generated outputs.

• Develop distributed systems and integrations supporting complex workflows and data processing requirements.

• Implement automated testing, including unit, integration and regression testing.

• Troubleshoot and resolve technical issues using structured debugging and root-cause analysis techniques.

• Improve CI/CD pipelines, deployment automation and Infrastructure as Code practices.

• Build cloud-native applications leveraging compute, serverless, messaging, storage and identity services.

• Contribute to architectural discussions while remaining actively involved in hands-on implementation.

• Collaborate closely with product owners, analysts, designers, testers and engineers to deliver practical business solutions.

• Produce clear technical documentation covering specifications, design decisions and operational support.

• Identify opportunities to improve engineering effectiveness through AI, automation and reusable patterns.

• Participate in code reviews and contribute to engineering best practice and continuous improvement initiatives.

• Undertake any other duties reasonably required., This is an opportunity to join a business investing heavily in engineering excellence, AI-native ways of working and modern software delivery practices. You will work with cutting-edge AI tools, agentic development workflows and cloud-native technologies whilst helping shape the future of software engineering within this company.

If you’re a builder who enjoys writing code, solving complex technical problems, designing scalable systems and using AI to transform how software is delivered, this role offers the opportunity to make a significant impact whilst remaining deeply hands-on.

Equal Opportunity and Reasonable Adjustments

We are an equal opportunity employer, and we are proud to share that 93% of our employees say they can be themselves at work. We aim to hire our industry’s finest people because the best people drive the best outcomes. And we forever challenge the status quo because we know there are always ways to improve things. Because together, we’re limitless.

We value applicants from all backgrounds and foster a culture of inclusivity. We understand the need for flexibility, so work in a hybrid model. Please let us know if you require any reasonable adjustments during the recruitment process.

Software Engineering

• Significant hands-on Experience in software development and object-oriented programming.

• Strong Experience building scalable full-stack applications using TypeScript/React and C#/.NET.

• Deep understanding of software engineering fundamentals, including design patterns, modular architecture, maintainable code and testing practices.

• Proven Experience developing RESTful APIs, integrations and microservices.

• Experience delivering end-to-end solutions across frontend, backend and data platforms.

• Solid understanding of distributed systems, service communication patterns and complex data flows.

• Experience working with modern architectures including microservices and event-driven systems.

• Strong understanding of secure development practices and software testing methodologies.

• Experience delivering production-grade software within Agile environments.

Cloud & DevOps

• Hands-on Experience with cloud platforms, ideally Microsoft Azure, although AWS or GCP Experience will also be considered.

• Experience working with cloud-native services including compute, serverless, messaging, storage and identity management.

• Familiarity with Docker and Kubernetes.

• Experience implementing modern deployment patterns and scalable cloud architectures.

• Experience building and maintaining CI/CD pipelines.

• Knowledge of Infrastructure as Code tools such as Terraform or equivalent.

• Strong understanding of cloud resources, monitoring and operational best practices.

Data & Integration

• Strong understanding of database design, optimisation and data modelling.

• Experience working with both relational and NoSQL databases.

• Knowledge of data access patterns, performance optimisation and system integration design.

AI-Native Engineering

• Strong AI literacy with practical Experience using AI-assisted development tools and agentic AI workflows.

• Experience applying Spec-Driven Development or similar specification-led engineering approaches.

• Ability to critically review, validate and improve AI-generated outputs to ensure quality and accuracy.

• Experience using AI to accelerate requirements analysis, specification creation, coding, testing, documentation and software delivery.

Skills & Competencies

Technical Excellence

• Deep full-stack engineering capability across frontend, backend and cloud-native technologies.

• Strong solution design and architectural thinking, balancing business needs with technical quality.

• Expertise in API development, integrations, microservices and distributed systems.

• Strong understanding of DevOps practices, CI/CD, Infrastructure as Code and deployment automation.

• Solid foundation in database technologies and data engineering principles.

AI-Native Mindset

• Uses AI tools and agentic workflows to improve productivity, quality and delivery outcomes.

• Applies sound engineering judgement, governance and validation when working with AI-generated outputs.

• Comfortable using AI to accelerate software development while maintaining accountability and control.

• Converts complex business requirements into clear, testable specifications that improve delivery speed and quality.

Professional Skills

• Strong problem-solving and analytical abilities.

• Excellent collaboration and stakeholder management skills.

• Effective communicator able to explain technical concepts to both technical and non-technical audiences.

• Committed to continuous improvement and adopting emerging technologies and engineering practices.

• Actively contributes to knowledge sharing, code reviews and team-wide engineering excellence.

This role is ideal for a highly capable software engineer who enjoys building quality software, embraces AI-assisted development and wants to play a significant hands-on role in delivering innovative solutions at scale.

This is a Senior individual contributor role focused on software engineering, implementation and technical delivery. While you may provide technical guidance and share knowledge with colleagues, success in the role will be measured by engineering impact, delivery outcomes and software quality rather than team management., * c#

• claude
• ai
• Python
• Sql

Since its inception, this company has sought to take a different approach to insurance. We are on a mission to be the most inspiring specialty (re)insurance group in the world. At the heart of are our people. Together, we challenge convention, embrace innovation and continuously raise the bar for ourselves and our industry., We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the “Contacting Us” section of our Online Privacy Notice at https://www.allegisgroup.com/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments