Software engineer, agents (UK)

Writer; Greater London; Sur place; GBP 85 000 - 120 000; Plein temps

Avantages offerts par ce poste

Generous PTO

Medical & dental insurance

Parental leave (16 weeks)

Fertility & family planning support

Pension scheme

Learning & development stipend

Wellness stipend

Annual team off-sites

Stock options

Résumé du poste

WRITER is seeking a highly skilled fullstack software engineer to join our engineering team building advanced AI-driven agent systems that automate complex workflows and integrate with enterprise data and services.

You will design, build, and scale production-grade services, APIs, and frontend tooling using Python and modern AI frameworks, collaborating with product managers, AI researchers, and data engineers to translate use cases into robust software.

Qualifications

• 3+ years of professional software engineering experience in Python in production environments.
• Proficiency with native agentic coding tools like Cursor, Claude Code, and other agentic platforms.
• Experience building distributed systems, microservices, or complex backend APIs for AI/agent workflows.
• Solid expertise with systems that integrate AI models, agent frameworks, vector databases, and large context reasoning services.
• Understanding of agent orchestration patterns, state management, and asynchronous workflows.
• Experience with cloud platforms (AWS, GCP, Azure), containers (Docker, Kubernetes), and CI/CD best practices.
• Strong testing, performance optimization, and observability practices.
• Excellent communication and collaboration skills with a proactive mindset.
• Past work on AI agents coordinating multi-step actions and autonomous decision-making.
• Contributions to open-source agent toolkits or SDKs.

Responsabilités

• Design, implement, and maintain scalable, secure agent-driven services and systems that autonomously accomplish tasks using modern AI frameworks.
• Develop and enhance robust infrastructure and high-throughput APIs for core agent capabilities such as memory, communication channels, skills, decision logic, security and workflow management.
• Integrate agent capabilities with backend services, data stores, vector databases, search/retrieval systems, and external APIs.
• Collaborate with product managers, AI researchers, data engineers, and UX teams to translate high-level agent use cases into production-ready software.
• Ensure reliability, monitoring and observability for all agent components (metrics, logging, CI/CD, fault tolerance).
• Contribute to architectural design decisions and participate in code reviews to uphold quality and maintainability.
• Experience with frontend tooling for agent management interfaces (React, TypeScript).

Connaissances

Python

Distributed systems

Microservices

Backend APIs

Cloud platforms

Docker

Kubernetes

CI/CD

React/TypeScript

Open-source

Agent frameworks

Communication

Outils

Cursor

Claude Code

Agent tooling

LangGraph

Vector databases

Description du poste

About WRITER

WRITER is the AI platform built for the world’s most ambitious marketing and revenue teams, bringing the frontier of AI to the people who drive enterprise growth. With WRITER, autonomous agents work across the buyer journey, continuously executing on market signals and enterprise intelligence to grow revenue faster. Every agent action and asset is grounded in trust, built on an Enterprise Brain that unites brand, product, and company knowledge with fiduciary-grade governance and compliance.

Fortune 500 companies are transforming how they go to market with WRITER, including 3 of the top 5 US banks, 2 of the 5 largest global CPG conglomerates, and 4 of the top 5 US healthcare insurers. Founded in 2020, WRITER is backed by investors including Insight Partners, ICONIQ, Radical Ventures, Premji Invest, Balderton, B Capital, Salesforce Ventures, Adobe Ventures, Accenture, Citi Ventures, IBM Ventures, WndrCo, and others. Learn more at WRITER.com.

About the role

We’re seeking a highly skilled fullstack software engineer to join our engineering team building advanced AI-driven agent systems that execute autonomous workflows, orchestrate multi-step tasks, and extend human capacity across enterprise applications. In this role, you’ll play a key part in designing, building, and scaling next-generation AI agents that integrate with enterprise data and services to solve real-world problems. You will collaborate with cross-functional teams to turn complex agent concepts into production-ready systems.

What you'll do

• Design, implement, and maintain scalable, secure agent-driven services and systems that autonomously accomplish tasks using modern AI frameworks.

• Develop and enhance robust infrastructure and high-throughput APIs, focusing on core agent capabilities such as memory, communication channels, skills, intelligent decision logic, security and workflow management.

• Integrate agent capabilities with backend services, data stores, vector databases, search/retrieval systems, and external APIs.

• Collaborate with product managers, AI researchers, data engineers, and UX teams to translate high-level agent use cases into robust, production-ready software.

• Ensure reliability, monitoring and observability for all agent components (metrics, logging, CI/CD, fault tolerance).

• Contribute to architectural design decisions and participate in rigorous code reviews to uphold quality and maintainability.

What you need

• 3+ years of professional software engineering experience with strong proficiency (3+ years) in Python in production environments

• Proficiency in native agentic coding, demonstrated through the daily use of tools like Cursor, Claude Code, and other agentic coding platforms.

• Demonstrated experience building distributed systems, microservices, or complex backend APIs that support AI/agent workflows.

• Solid expertise with systems that integrate AI models, agent frameworks (e.g., LangGraph, Agent Harness or platform-specific tooling), vector databases, and large context reasoning services.

• Understanding of agent orchestration patterns, state management, and asynchronous workflows.

• Experience with cloud platforms (e.g., AWS, GCP, Azure), containerization (Docker, Kubernetes), and operational engineering best practices.

• Good grasp of performance optimization, testing frameworks, and CI/CD pipelines.

• Excellent communication and collaboration skills, with a “connect + challenge + own” mindset.

• Past work on AI agents that coordinate multi-step actions, reasoning, or autonomous decision-making loops.

• Contributions to open-source agent toolkits or SDKs.

• Experience with frontend technologies (React, TypeScript) for tooling around agent management interfaces.

Benefits & perks (UK full-time employees)

• Generous PTO, plus company holidays

• Comprehensive medical and dental insurance

• Paid parental leave for all parents (16 weeks)

• Fertility and family planning support

• Competitive pension scheme and company contribution

• Annual work-life stipends for:

  • Wellness stipend for gym, massage/chiropractor, personal training, etc.

  • Learning and development stipend

• Company-wide off-sites and team off-sites

• Competitive compensation and company stock options