Senior Software Engineer (Full-Stack – Scale GP)

Scale AI; York and North Yorkshire; On-site; GBP 85,000 - 120,000; Full time

Benefits offered by this job

Health & wellbeing

Career growth

Community events

Parental support

Job summary

Scale AI in York is seeking a Senior Full-Stack Engineer to help build and scale Scale GP, our Generative AI platform. You’ll own major full-stack product areas, delivering features from design to production deployment.

You will work across the stack—from React/TypeScript frontends to Python backends—integrating with LLMs, vector databases, and ML infrastructure.

The role emphasizes performance, reliability, and a strong product experience in a fast-growing startup environment.

Qualifications

• 5+ years of full-time engineering experience.
• Strong experience building full-stack apps with React, TypeScript, and Python.
• Experience with Kubernetes, microservice architectures and distributed systems.
• Familiarity with LLMs, vector databases, embeddings, or other AI tooling.

Responsibilities

• Own major full-stack product areas from design through production deployment.
• Build modern frontend experiences using React and TypeScript for performance and usability.
• Develop reliable backend services in Python with scalable data pipelines and ML integrations.
• Integrate with LLMs and AI infrastructure to power product experiences.

Skills

React

TypeScript

Python

Kubernetes

Distributed systems

SQL

APIs

LLMs familiarity

Education

Bachelor's degree in Computer Science or related

Tools

Docker

AWS

GCP

Azure

Job description

• Scale GP (Scale Generative AI Platform) is an enterprise-grade Generative AI platform providing APIs for knowledge retrieval, inference, evaluation, and more
• We are seeking a strong Senior Full-Stack Engineer to help us build, scale, and refine our rapidly growing product
• You will work across the stack—from React/TypeScript frontends to Python-based backends—while integrating with LLMs and machine learning systems
• You will solve complex challenges in scalability, reliability, and product experience while owning significant product areas in a fast-paced environment
• Own major full-stack product areas, driving features from design through production deployment
• Build modern frontend experiences using React and TypeScript, ensuring performance, usability, and responsiveness
• Develop reliable backend services in Python, working with distributed systems, data pipelines, and ML/LLM components
• Integrate with LLMs, vector databases, and AI infrastructure to power intelligent product experiences
• Deliver experiments and new features quickly, maintaining high quality and tight feedback loops with customers
• Collaborate across product, ML, and infrastructure teams to shape the direction of Scale GP
• Adapt quickly—learning new technologies, frameworks, and tools as needed across the stack

Benefits

• Health & Wellbeing: Our holistic approach to supporting Scaliens includes comprehensive health coverage, dental and vision insurance, mental healthcare services, and more. PTO policies and accommodating schedules ensure you’ll get time off when you need it to relax and recharge. Note that our offerings may vary by region as we strive to respond to the unique needs of Scaliens around the globe.
• Personal & Career Growth: Continuously learn and grow through annual learning & development stipend, attending leadership breakfasts, manager training, speaker series, and joining an ERG.
• Building Scale Community: We welcome guests to our offices, and you can expect to see Scalien families and friends around. Join local happy hours, and accept invites to game nights, book clubs, and many other employee-led community events.
• Parental Support: Balancing work and family is essential, and Scale understands the importance of having adequate leave policies in place to promote a healthy home and work life.

The ideal candidate is deeply grounded in software engineering best practices and experienced in developing and scaling modern web applications end-to-endExperience scaling or shipping products at high-growth startups5+ years of full-time engineering experience, post-graduationStrong experience developing full-stack applications using React, TypeScript, and PythonExperience with Kubernetes, containerization, and microservice architecturesFamiliarity with LLMs, vector databases, embeddings, or other modern AI tooling (tinkering or production experience welcome)Experience working with at least one major cloud provider (AWS, GCP, or Azure)Proficiency with SQL and modern API development