Chief Software Architect / Claude & Agentic AI

Careerwise; Greater London; On-site; GBP 120,000 - 180,000; Full time

Job summary

Careerwise is seeking a Chief Software Architect to design and deliver enterprise FinTech solutions built on Anthropic Claude technologies. You will architect Claude-based systems, lead the architecture of scalable, secure platforms, modernise legacy code, and establish governance and responsible AI practices for regulated environments.

You will also guide senior stakeholders from pre-sales conversations through delivery.

Qualifications

• CTO-level or similar with enterprise delivery experience.
• Deep Claude ecosystem knowledge and practical deployments.
• Strong cloud-native, secure architecture background.

Responsibilities

• Architect Claude-based enterprise solutions across integration layers and orchestration.
• Lead design and delivery of scalable, secure, serverless FinTech platforms.
• Modernise legacy code with AI-assisted engineering and governance.
• Define architectural principles, security controls, and responsible AI frameworks.
• Advise senior stakeholders from pre-sales to delivery, shaping bespoke solutions.
• Lead multidisciplinary teams while remaining hands-on during large transformations.

Skills

Hands-on engineering

Cloud-native architecture

Enterprise software

Regulated environments

Stakeholder advisory

Tools

Anthropic Claude APIs

Claude tools

MCP

Prompt engineering

Context engineering

Job description

Chief Software Architect / Claude & Agentic AI

A Chief Software Architect is required by a FinTech-focused AI engineering consultancy to design and deliver enterprise solutions built on Anthropic’s Claude technologies.

You will be responsible for:

• Architecting and designing Claude-based enterprise solutions using a wide range of Claude tools, from integration layers and agentic orchestration to the harnesses that take AI from prototype to production.
• Leading the design and delivery of scalable, secure, serverless FinTech platforms for enterprise clients.
• Modernising software development by overhauling legacy codebases and introducing AI-assisted, Claude-powered engineering, supported by the controls and practices needed to keep it safe and compliant at scale.
• Setting governance and standards by defining the architectural principles, security controls and responsible AI frameworks needed to deploy AI in regulated environments.
• Advising senior stakeholders and shaping bespoke solutions that deliver measurable business value, from initial pre-sales conversations through to delivery.
• Leading multidisciplinary teams while remaining hands-on throughout large transformation programmes.

Required experience

• Extensive experience as a CTO, Chief Architect, Head of Engineering or in a similar role, with a track record of solving complex architectural problems and delivering enterprise-class products to customers.
• Deep, hands-on knowledge of the Anthropic Claude ecosystem, including APIs, agents, tool use, MCP, prompt engineering and context engineering, with practical experience applying these capabilities in complex, real-world environments.
• Hands-on software engineering skills.
• Strong expertise in cloud-native architecture, including serverless computing, managed services and public cloud, as well as enterprise integration and modern software development and deployment.
• Experience delivering enterprise software in regulated sectors, with a good understanding of security, risk, privacy and governance requirements.
• A strong blend of commercial and technical skills, with the ability to move from client conversations to scoped solutions and hands-on implementation.