Software engineer, generative AI (UK)

Writer; Greater London; Hybrid; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Generous PTO

Medical and dental insurance

Parental leave (16 weeks)

Fertility and family planning support

Galleri cancer testing

Pension scheme and company match

Annual wellness stipend

Learning and development stipend

Company stock options

Off-sites and team events

Job summary

WRITER is seeking a software engineer focused on generative AI to design, build, and scale secure AI services for large enterprises. You’ll own architecture from proposal to production, delivering low-latency APIs and robust systems across its core platform.

You will work in a hybrid role, collaborating with product managers, data scientists, and DevOps, while leveraging Python, FastAPI, React, and cloud technologies to enable enterprise-wide AI adoption.

Qualifications

• 3–5+ years hands-on software engineering with Python in production.
• Experience building generative AI apps using LLMs and vector DBs (Pinecone/Weaviate/pgvector).
• Experience with microservices, RESTful APIs, and cloud platforms (AWS/GCP/Azure) and Docker/Kubernetes.
• Strong knowledge of FastAPI, Asyncio, PostgreSQL, and AI tooling like Claude, Cursor, Copilot.
• Exposure to IAM, SSO, OAuth, RBAC and enterprise security practices.

Responsibilities

• Design and develop robust, secure, and scalable generative AI services and applications using Python and modern frameworks to drive enterprise-wide transformation
• Build and optimize high-performance, low-latency APIs and microservices to integrate AI models and agentic workflows into our core platform
• Act as a whole-systems thinker by making meaningful system design decisions and owning the architecture of core platform components from proposal through production
• Implement and maintain responsive UIs using React and TypeScript to deliver intuitive experiences
• Drive proactivity by communicating plans and proposals to cross-functional teams and collaborating with PMs, data scientists, and DevOps
• Partner with DevOps to build CD/monitoring systems ensuring performance, security, and reliability

Skills

Python development

Generative AI

Microservices

RESTful APIs

Cloud platforms

Docker & Kubernetes

FastAPI & Asyncio

IAM & security

Tools

Pinecone

Weaviate

pgvector

Claude

Cursor

GitHub Copilot

Job description

About WRITER

WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI.

Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI.

About the role

Imagine stepping into a role where your code directly empowers the world's largest enterprises to safely adopt superintelligence. As a software engineer, generative ai at WRITER, you'll be at the forefront of expanding human capacity by building the secure, scalable foundation that allows our generative AI solutions to thrive in complex corporate environments. The impact of this work is massive – for example, in the consumer packaged goods industry alone, our AI adoption is driving 69% revenue increases and 72% cost reductions.

This role is designed for a well-rounded engineering generalist who leans heavily into generative AI while bringing a whole-systems mindset to architectural design. If you thrive on proactivity without red tape and love owning projects from proposal to deployment, you'll shape the future of AI and contribute to a product that’s changing how the world works. This is a hybrid role based out of our San Francisco, New York City, or London hubs. You'll report to an engineering director or a senior engineering manager.

* We are open to hiring for this role at multiple levels, from senior to staff software engineer, with compensation ranges scaled to match your experience and expertise.

What you'll do

• Design and develop robust, secure, and scalable generative AI services and applications using Python and modern frameworks to drive enterprise-wide transformation

• Build and optimize high-performance, low-latency APIs and microservices to integrate advanced AI models and sophisticated agentic workflows into our core platform

• Act as a whole-systems thinker by making meaningful system design decisions and owning the architecture of core platform components from initial proposal through production deployment

• Implement and maintain responsive user interfaces using technologies like React and TypeScript to deliver intuitive user experiences and bridge the gap between backend services and frontend enablement

• Drive proactivity without red tape by clearly communicating changes, plans, and proposals to cross-functional teams and collaborating closely with product managers, data scientists, and DevOps engineers

• Partner with DevOps teams to build continuous deployment, logging, and monitoring systems that ensure top-tier performance, security, and reliability across distributed workloads

What you need

• 3-5+ years of hands-on experience as a software engineer with a strong emphasis on Python development in production environments

• Proven expertise in building and deploying generative AI applications, leveraging LLMs, vector databases like Pinecone, Weaviate, or pgvector, and modern open-source agentic frameworks

• Practical experience with microservices architecture, RESTful APIs, cloud platforms such as AWS, GCP, or Azure, and containerization with Docker and Kubernetes

• Solid grasp of modern web technologies including FastAPI, Asyncio, database systems like PostgreSQL, and hands-on experience leveraging AI developer tooling like Claude, Cursor, or GitHub Copilot to accelerate your engineering workflows

• Exposure to enterprise architecture including practical experience implementing IAM, SSO, SAML, OAuth, OIDC, RBAC, robust security best practices, or building services for enterprise administration and billing systems

• A Connect mindset that thrives in collaborative settings where you actively engage with cross-functional teams and mentor other engineers, a Challenge spirit that drives you to tackle complex technical hurdles and proactively suggest innovative improvements, and an Own attitude where you take full accountability for delivering high-quality, resilient, and scalable code from conception to production

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

• Early-detection cancer testing through Galleri

• 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