Top Tech Jobs & Startup Jobs in London

Design and build autonomous AI testing systems that understand software behavior, identify critical failures, simulate real users, and self-heal as codebases evolve. Collaborate with engineering and product teams to define agent interactions with real-world code, own projects from concept through production, and help establish the technical standards and culture of a high-autonomy team.

Build pipeline from scratch, define the ideal customer profile, sell autonomous AI-native QA software to CTOs and founders, close B2B SaaS deals, and develop a repeatable sales playbook. The Account Executive will translate technical customer pain into business value, operate autonomously in an ambiguous startup environment, collaborate with founders and product leadership, and provide customer insights to influence roadmap and category strategy.

Support founders across product, engineering, and operations; participate in user and partner calls; build GTM, product, finance, and hiring systems; conduct market and competitor research; manage special projects; contribute to feature specifications, experiments, and AI-agent evaluation. The role requires high ownership, analytical thinking, adaptability, curiosity about AI and developer tools, and comfort working directly with founders in an ambiguous startup environment.

Build and own growth from zero across outbound, content, partnerships, communities, and experiments. Work with founders on go-to-market loops, translate customer signals into repeatable systems, test messaging and conversion hypotheses, build lightweight growth infrastructure, and align growth with product value. This early-stage role requires high ownership, rapid execution, commercial intuition, clear communication, and comfort operating without an established playbook.

Build and define a full-stack autonomous testing platform powered by AI agents. Responsibilities include developing LLM-powered testers, experimenting with models, embeddings, and retrieval pipelines, owning frontend, backend, and cloud infrastructure, deploying frequently, engaging with users, and converting prototypes into production software. The role requires high ownership, rapid execution, product focus, and experience working in startup environments.

Build and deploy AI-powered autonomous testing agents that simulate users, identify software failures, and self-heal as products evolve. The role involves working across frontend, backend, and cloud infrastructure; experimenting with models, embeddings, and retrieval pipelines; engaging with users; and turning prototypes into production systems.

Build pipeline from scratch, define the ideal customer profile, sell autonomous AI-native QA software to CTOs and founders, close new business, and create a repeatable sales playbook. Translate technical product capabilities into business value, provide customer insights to founders and product teams, and help establish a new software testing category.

Design, build, and operate cloud infrastructure for autonomous testing agents. Own CI/CD, infrastructure as code, Kubernetes-based workloads, observability, alerting, incident response, reliability, cost optimization, security, and platform scalability. The role requires operating production systems under real load and enabling fast, confident software delivery.

Develop and deploy reinforcement learning systems that autonomously test modern web applications. Build agents capable of perceiving applications through vision and structure, exploring edge cases, learning from sparse rewards, scaling across environments, and transferring knowledge between applications. The role requires shipping production ML systems, advancing RL methods, and optimizing agents for large-scale GPU infrastructure.

Source leads, conduct outreach, build sales pipeline, learn technical buyer needs, support founder and customer calls, test creative go-to-market experiments, and automate sales workflows with AI. The role focuses on generating qualified conversations for an emerging AI-native software testing platform rather than independently closing deals.