Spencer Scott - Technology Recruitment
Artificial Intelligence Engineer
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Senior AI Software Engineer
We are looking for two Senior AI Software Engineers who will work fully remotely from the UK for a very well known London B2B - SaaS organisation. This is a hands-on engineering role where you'll write production code every day, partner closely with Product and Design, and play a key role in defining how AI is embedded safely, reliably, and thoughtfully across their market leading platform.
These Senior AI Software Engineering positions will pay an annual salary range between £90,000 - £120,000 depending on experience. In addition, the Company offers a rewarding annual bonus scheme, excellent Company pension, full private health care (family members can be added at a small additional cost), educational budget and various other regional / personal benefits.
Unfortunately, VISA Sponsorship is not available and candidates must be based living in the UK without any working / living restrictions. From time to time you may be asked to visit the London office for training / collaboration days.
Key Experience Required
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- TypeScript/Node fundamentals — production-grade experience as opposed to "worked with it once."
- Full stack: API layer through to React clients.
- Anthropic/Claude API experience — prompt construction, tool/function calling, structured output, streaming, MCP (Model Context Protocol).
- PostgreSQL — schema design, migrations, multi-tenant isolation. Azure-hosted Postgres specifically is a plus, not a requirement!
- Comfort in greenfield, no-playbook environments — self-directed, able to make judgment calls without an established pattern to copy.
Additional Experience Required
- Testing and CI discipline as a default habit, not an afterthought.
- Security depth that's threat-modeled to the actual product, not generic hardening — e.g. SSRF-guarding server-side fetches of user-supplied URLs, signed/hashed share tokens, reasoning through XSS/sandbox tradeoffs rather than defaulting to a template.
- Genuine MCP design sophistication — real OAuth (not bearer tokens), understanding of session/transport constraints (e.g. why an MCP server can't run stateless on serverless infra), and architectural judgment about where core logic lives across surfaces.
- Honest, precise self-assessment — looking for candidates that clearly state what they deferred and why, rather than overselling scope.
- AI-augmented development fluency — actually using Claude Code day to day, not just aware of it.
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For full information and to be considered for these two Senior AI Software Engineering opportunities, please click the APPLY button and a Spencer Scott representative will make contact.
Equal Opportunity
Spencer Scott Ltd is an equal opportunity Recruitment Agency, which means we do not discriminate on the basis of race, colour, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression. We celebrate diversity and are committed to create inclusive working environments for all our clients.
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