AI engineer (UK)

Writer; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Generous PTO

Medical and dental insurance

Parental leave

Fertility support

Pension scheme

Wellness stipend

Learning and development stipend

Off-sites and team trips

Stock options

Job summary

WRITER, the AI platform for ambitious marketing and revenue teams, is seeking an experienced AI engineer to shape enterprise AI. You will build tangible AI solutions that power the future of work, impacting performance, scalability, and the ethical alignment of our LLMs and agents.

This role can be hybrid in our London hub. You will collaborate with research scientists, data scientists, and product managers to translate research into production features and responsibly deploy AI that customers

Qualifications

• 5+ years of professional experience building production ML/AI systems.
• Proficiency in Python with PyTorch, TensorFlow, or JAX.
• Strong ML/DL foundations and NLP, especially with large language models.
• Experience with cloud platforms (AWS, GCP, Azure) and MLOps.
• Proven ability to write clean, tested code for scalable systems.
• Collaborative and proactive in cross-functional teams.
• Commitment to responsible AI and ethical alignment.

Responsibilities

• Architect, develop, and deploy scalable AI applications into production.
• Drive the development of intelligent agents and AI-powered features.
• Collaborate with researchers, data scientists, and product managers to define technical requirements.
• Evaluate new AI technologies and frameworks to maintain leadership in enterprise AI.
• Champion responsible AI practices including bias detection, explainability, and safety.

Skills

Python programming

ML fundamentals

NLP & LLMs

Problem solving

Cross-functional collaboration

Ethical AI & safety

English communication

Tools

PyTorch

TensorFlow

JAX

Job description

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

As an AI engineer at WRITER, you'll be at the forefront of shaping how enterprises harness superintelligence. This isn't just about theory; you'll be building tangible AI solutions that power the future of work for hundreds of the world's leading companies. Your work will directly impact the performance, scalability, and ethical alignment of our cutting‑edge LLMs and AI agents, enabling businesses to unlock unprecedented levels of productivity and innovation with AI that is truly grounded in their data. This role can be hybrid in our London hub. You'll report to the head of AI engineering.

What you'll do

• Architect, develop, and deploy high-performance, scalable AI applications into production environments, ensuring robust integrations with our end-to-end platform.
• Drive the development of intelligent agents and AI-powered features, translating complex research into practical, impactful solutions for our customers.
• Collaborate closely with research scientists, data scientists, and product managers to define technical requirements and deliver features that address critical business needs.
• Contribute to the research and evaluation of emerging AI technologies, frameworks, and tools to maintain WRITER’s leadership in the enterprise generative AI space.
• Champion responsible AI practices, including bias detection, explainability, and safety alignment, making sure our AI is trustworthy and ethical.

What you need

• 5+ years of professional experience building and deploying machine learning or AI systems in a production environment.
• Proficiency in Python and experience with relevant AI/ML frameworks such as PyTorch, TensorFlow, or JAX.
• A strong foundation in machine learning principles, deep learning architectures, and natural language processing, particularly with large language models.
• Experience with cloud platforms (e.g., AWS, GCP, Azure) and MLOps tools for managing the AI lifecycle.
• Demonstrated ability to write clean, efficient, and well‑tested code for scalable software systems.
• Exceptional problem‑solving skills and a passion for tackling complex technical challenges with creative AI solutions.
• You Connect by collaborating seamlessly across diverse teams, Challenge the status quo to innovate, and Own your projects with a commitment to impact and excellence.

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