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Scale AI

Software Engineer - New Grad

Scale AI is hiring a Software Engineer - New Grad in London, United Kingdom. Level rates it ; you can apply on Scale AI.

Level's read on this job

  • On Level's scale, this software engineer role is Builds AI ●●●●: the job is building AI systems.
  • Tools and skills the posting cites include Python, PyTorch and RAG.
  • Level classifies it as a junior role.
  • Level lists 169 other open roles at Scale AI.

AI in this role

New Grad Software Engineer to build AI infrastructure, ML pipelines, and customer-facing AI applications.

pythonpytorchrag
ragmachine-learningfull-stack-developmentrag-applications

At Scale, our mission is to develop reliable AI systems for the world's most important decisions. For 10 years, Scale has provided the high-quality data and full-stack technologies that power the world's leading models, and has helped enterprises and governments build, deploy, and oversee AI applications that deliver real impact. We work closely with industry leaders like Meta, Ernst & Young, Mayo Clinic, Time Inc., the Government of Qatar, and U.S. government agencies including the Army and Air Force.

Every industry is moving AI to the center of operations, but there is still no clear blueprint for getting from pilot to profit. That is the problem our engineers work on. As a New Grad Software Engineer, you will own meaningful, customer-facing work from day one — shipping products, talking directly to the customers who use them, and iterating fast.

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of:

  • Creating custom AI applications that will impact millions of citizens
  • Generating high-quality training data for national LLMs
  • Upskilling and advisory services to spread the impact of AI

Example Projects:

  • Build reinforcement learning and post-training data pipelines that power frontier model development
  • Develop evaluation infrastructure that measures model reliability for enterprise and public sector customers
  • Ship agentic AI applications and the tooling that makes them observable, testable, and safe to deploy
  • Ship tools that accelerate the growth of new qualified contributors on Scale's platform
  • Build fraud-detection systems that remove bad actors and keep Scale's contributor base safe and trusted
  • Use models to estimate the quality of tasks and contributors, and guarantee quality on requests at large scale
  • Devise advanced matching algorithms that pair contributors to customers for optimal turnaround and accuracy
  • Create optimized and efficient UI/UX tooling, in combination with ML algorithms, for 100k+ contributors completing billions of complex tasks
  • Develop new AI infrastructure products to visualize, query, and explore Scale data
  • Build a customer service RAG application that handles thousands of questions a day
  • Integrate a cutting-edge ML model that predicts churn into a customer's retention system

Requirements:

  • A graduation date in Fall 2026 or Spring 2027 with a Bachelor's degree (or equivalent) in a relevant field (Computer Science, EECS, Computer Engineering, Statistics)
  • Product engineering experience such as building web apps full-stack, integrating with relevant APIs and services, talking to customers, figuring out 'what' to build and then iterating
  • Previous Product/Software Engineering internship experience
  • Track record of shipping high-quality products and features at scale
  • Experience building systems that process large volumes of data
  • Experience with Python, Typescript, React, and/or MongoDB

Please reference the job posting's subtitle for where this position will be located.

Nice to have:

  • Hands-on experience with LLMs, evaluations, or agentic systems — whether from internships, research, or personal projects
  • Open source contributions or a portfolio of shipped side projects

How we work:

Our credos shape how we make decisions and work as a team:

  • Earn Customer Love — trust is earned with every interaction, every delivery, and every problem we solve
  • Team Flow — ideas, energy, and support move freely across teams; optimize for the whole
  • Quality is Our Cheat Code — the systems that deliver quality consistently are a structural advantage
  • Find the 20% — find the inputs that drive the outcomes and execute them completely
  • Write the Market — our research puts us at the frontier, and we bring our partners there first
  • Three Moves Ahead — consider the consequences of consequences, and plan accordingly

PLEASE NOTE: Our policy requires a 90-day waiting period before reconsidering candidates for the same role. This allows us to ensure a fair and thorough evaluation of all applicants.

About Us:

At Scale, our mission is to develop reliable AI systems for the world's most important decisions. Our products provide the high-quality data and full-stack technologies that power the world's leading models, and help enterprises and governments build, deploy, and oversee AI applications that deliver real impact. We work closely with industry leaders like Meta, Ernst & Young, Mayo Clinic, Time Inc., the Government of Qatar, and U.S. government agencies including the Army and Air Force. We are expanding our team to accelerate the development of AI applications.

We believe that everyone should be able to bring their whole selves to work, which is why we are proud to be an inclusive and equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability status, gender identity or Veteran status. 

We are committed to working with and providing reasonable accommodations to applicants with physical and mental disabilities. If you need assistance and/or a reasonable accommodation in the application or recruiting process due to a disability, please contact us at accommodations@scale.com. Please see the United States Department of Labor's Know Your Rights poster for additional information.

We comply with the United States Department of Labor's Pay Transparency provision. 

PLEASE NOTE: We collect, retain and use personal data for our professional business purposes, including notifying you of job opportunities that may be of interest and sharing with our affiliates. We limit the personal data we collect to that which we believe is appropriate and necessary to manage applicants’ needs, provide our services, and comply with applicable laws. Any information we collect in connection with your application will be treated in accordance with our internal policies and programs designed to protect personal data. Please see our privacy policy for additional information.

How we rate this

Software Engineer - New Grad at Scale AI rates 85 out of 100 for how much of the daily work is AI. That makes it Builds AI (AI Level 4 of 4). The level is about AI in the job, not seniority.

Classification

Builds AI. The job is building AI systems.

  1. ●●●● Builds AI80 to 100
  2. ●●●○ Works on AI60 to 79
  3. ●●○○ Uses AI40 to 59
  4. ●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

RAGMachine learningFull Stack DevelopmentRAG ApplicationsPythonPyTorch

Also common in software engineer jobs at this level

Pay

Typical software engineer job
$168k

This posting doesn't list pay. Use the typical software engineer figure when pay comes up. See software engineer jobs

Questions you could be asked

  1. How would you design a retrieval step so the model answers from real data instead of guessing?
  2. Tell me about a project where machine learning was part of your work. What did you do?
  3. Tell me about a project where full stack development was part of your work. What did you do?
  4. Tell me about a project where rag applications was part of your work. What did you do?
  5. Walk me through how you've used Python in your day-to-day work.

Adapt your resume

  • List these exact terms on your resume: RAG, Machine learning, Full Stack Development, RAG Applications, and Python. An applicant tracking system matches the wording, not the idea.
  • Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
  • Lead with what you built, trained or shipped. This role is judged on the AI system itself, not the tools around it.

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