Graduate Developer

London, England, United Kingdom · Technology expand job description ↓


About us

Food waste is a $1 trillion problem – costing the world over 1% of global GDP. We’re dead set on solving the problem and looking for people to help us achieve our mission. We, at Winnow, believe that food is far too valuable to waste, and that technology can transform the way we produce food. Our team is made of people who all share a passion for food and technology.

Winnow was founded in London in 2013 to help the hospitality industry prevent food waste through internet of things tools in the kitchen. We have worked with hundreds of sites and are operating in over 30 countries around the world supported by our offices in London, Dubai, Shanghai, Singapore, Romania and North America. We are a rapidly growing company with a strong base of clients who are rolling out our system globally. We have blue-chip customers including Accor Hotels, IKEA, IHG, Marriott, Compass Group and many others.

Winnow’s clients on average reduce waste by over 50% by value and sustain savings. Winnow has now worked with hundreds of sites to reduce food waste, including hotels, universities and schools, staff restaurants, event/hospitality kitchens, buffets, pubs, and high street restaurants. Where the system is permanently adopted, pre-consumer waste value is reduced by 50% - 70% with no detrimental impact to the perceived quality or value of the offer to their customers. This represents a typical improvement of food cost savings of 3% to 8%, commonly a 40%+ increase in profitability for operations.

As the global leader in addressing food waste, we are committed to continue pushing the envelope on what technology can do to solve this problem. Winnow Vision, our new artificial intelligence-based technology, is trained to automatically track all food waste thrown away. It has won awards at the World Economic Forum and has been received tremendous enthusiasm from our clients and the industry. You can read more about it on our website and this article in Forbes.

About the role

As a Graduate Developer, you’ll be using your innate coding talent and knowledge of computer programming languages. Our technology stack is constantly evolving as we pick the right tools for the job, but you should expect to be working with frontend, backend and cloud technologies such as Angular JS, Node.js, PostgreSQL running on AWS. We use an Agile process to manage our work flow, and you will work with the rest of the team to define and implement new tasks as they arise.

Depending on the projects we are focusing on at the time, you’ll gain a range of experiences while you are with us. You’ll get hands-on training and work with a mentor on real strategic projects. You could find yourself working with our Research Scientists, Scrum teams or product team. You may find yourself being challenged with developing in a language you’ve never used before or developing a new feature for the Winnow system.

Key responsibilities:

  • Work as part of a best in class team, developing cutting edge applications and services
  • Design and implement high-availability and performance applications
  • Write reusable, testable, and efficient code
  • Implement automated testing platforms and unit tests
  • Estimate effort required and deliver to your commitment

Our Technology

Technology is at the forefront of what we do, and the success of our company is based on our world-class technology and on finding solutions to real world problems that have not been solved to date.

We use a variety of server-side and client-side technologies. Our current stack is outlined below:

  • Server side: Java, Go, Python, Node.JS
  • Client side: VueJS
  • Database: MySQL, PostgreSQL
  • Build systems: CircleCI, Jenkins
  • Task automation: Grunt
  • Version control system: Git, BitBucket
  • Android apps
  • Designing and manufacturing IoT ‘smart’ edge devices and expanding using Linux powered devices on the field collecting data using cutting edge technologies
  • Focus on security, user authentication, permissions, data integrity
  • AWS Cloud using EC2, Aurora, S3 and other services
  • Moving to a Microservices architecture using Kafka for messaging and currently implementing other patterns
  • Continuous Integration and Delivery using Jenkins, SonarQube, New Relic, Docker,Terraform
  • Test Driven Development environment with focus on testing and quality output
  • Reporting and Analytics using Pentaho


  • Candidates are likely to hold a Masters or Bachelor’s degree in computer science or any related field with emphasis on information technology
  • You should be able to programme using at least one programming languages - one of them being Node,js, Python, Java and eager to expand skills, when needed, to complete a project which may iclude Front-End and Back-End elements.
  • Have understanding of RDBMS (MySQL or PostgreSQL) and SQL query writing.
  • Have understanding of code versioning tools, such as Git
  • Have understanding of concepts like Continuous Integration, Continuous Delivery, Code Coverage, Code Quality, Test Driven Development, Unit Testing, and Integration Testing.
  • AWS experience will be considered a plus
  • Experience in contributing to existing project(s) with imperfect documentation and rapidly evolving requirements is a plus
  • Experience working with tools like JIRA and Confluence in a fully Agile environment using Jenkins as the CI tool is a plus
  • Comfortable in a fast-moving small company environment where things change based on data and customer feedback.


  • Competitive base salary
  • Company stock options package
  • Eligible for discretionary annual bonus
  • Subsidised health insurance
  • Life insurance
  • Employee assistance programme
  • 25 days of paid vacation time (plus the option to buy a further 5 days annual leave) in addition to national holidays
  • Shared office space with a great working environment and a flexible approach to work
  • You will love what you do – waking up every day solving one of the biggest social problems of our generation
  • Committed team members with broad experience who share a common passion to build a world class business
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Do you require visa sponsor to work in the UK?
Are your studies due to complete in 2019?