Software Engineer, Agents (AI)

Location: London, UK; hybrid workplace.

Company

Writer is an AI platform that helps enterprise marketing and revenue teams use autonomous agents, enterprise knowledge, governance, and compliance to execute buyer-journey workflows.

What you will do

• Design, build, and maintain scalable, secure agent-driven services that autonomously accomplish tasks.
• Develop high-throughput APIs and infrastructure for agent memory, communication channels, skills, decision logic, security, and workflow management.
• Integrate agents with backend services, data stores, vector databases, search and retrieval systems, and external APIs.
• Collaborate with product managers, AI researchers, data engineers, and UX teams to turn agent use cases into production-ready software.
• Ensure reliability, monitoring, observability, fault tolerance, metrics, logging, and CI/CD for agent components.
• Contribute to architecture decisions and rigorous code reviews.

Requirements

• 3+ years of professional software engineering experience, including 3+ years of Python in production.
• Daily professional use of native agentic coding tools such as Cursor, Claude Code, or similar platforms.
• Experience building distributed systems, microservices, or complex backend APIs supporting AI or agent workflows.
• Expertise integrating AI models, agent frameworks such as LangGraph or Agent Harness, vector databases, and large-context reasoning services.
• Understanding of agent orchestration patterns, state management, and asynchronous workflows.
• Experience with AWS, GCP, or Azure; Docker or Kubernetes; and operational engineering practices.
• Knowledge of performance optimization, testing frameworks, and CI/CD pipelines.
• Experience building AI agents that coordinate multi-step actions, reasoning, or autonomous decision-making loops.
• Contributions to open-source agent toolkits or SDKs, plus excellent communication and collaboration skills.
• Experience with React and TypeScript for agent-management interfaces.

Culture & Benefits

• Full-time employment with hybrid work in London, UK.
• Generous paid time off and company holidays.
• Comprehensive medical and dental insurance, paid parental leave for all parents for 16 weeks, and fertility and family-planning support.
• Competitive pension scheme with company contribution.
• Annual wellness and learning-and-development stipends.
• Company and team off-sites, competitive compensation, and company stock options.