The Behavioural Insights Team

Full Stack Developer


Permanent: 39 hours Salary range: £35,000 - £45,000 per annum, plus benefits Based in Central London

The Behavioural Insights Team (BIT) is looking for a web developer to join our growing BI Ventures team. The role will involve working closely with Product Leads to develop BIT’s digital products that use behavioural science to solve real world problems. You will initially work across Promptable, our study support programme that increases student attendance and attainment, and Networky, a system for buddying people up to chat online before they start something new, to help them settle in and increase turn-up rate. There will also be opportunities to work on the growing future pipeline of products. Successful applicants will be given time and encouragement to develop their technical skills across the stack, and will gain valuable experience in rapid prototyping, and delivering real impact for end users.

BI Ventures uses a range of mature and cutting edge technologies with an emphasis on open source: Amazon Web Services, Ubuntu, PHP, Go (or golang), and React.js. We have a lightweight DevOps approach, and we do a lot of prototyping. We understand the value of deep work, and will work with you to minimise interruptions to your working day. Weekly work-from-home days are also encouraged.

The Behavioural Insights Team

The Behavioural Insights Team was the world's first government institution dedicated to the application of behavioural sciences. We apply a more nuanced and evidence-based understanding of human behaviour to products, public services, and policy around the world. In 2014 we spun out of government, becoming a social-purpose company, and for the last three years have been building a portfolio of digital products, BI Ventures.

Ventures at BIT

BI Ventures is a growing team within BIT. Our mission is to use insights from the behavioural sciences to build scaleable, commercially successful products with a social impact. We use cutting edge insights from the broad range of projects at BIT – including data science, successful field trials, qualitative research, policy research and academic literature. These unique insights are the starting point for the development of digital products to solve social issues. By using these insights, we can move quickly to prototyping solutions and piloting.

Examples of our existing portfolio of products include:

Applied (, which uses insights from behavioural science to remove implicit bias from recruitment decisions. We spun the team out from BI Ventures and it has since successfully taken on external investment. Your application will be made through the Applied platform (see link below).

Predictiv (, which enables organisations to run online experiments using panels of people across the UK (and increasingly overseas). Around 70,000 people have participated in these tests so far.

Promptable (, which encourages students to stick at their education programmes and is currently being used by 10,000 students.

Networky (, which connects people together before they are about to join a new programme, making it more likely they will show up and more prepared when they do. It currently has around 60,000 users.

BI Ventures is a crucial part of BIT’s strategy and we are investing in its growth. This role is key to our growth plans.

Role and Responsibilities

The roles and responsibilities of the successful candidate(s) will depend on their precise skills, qualifications, and experience, but are likely to include:

  • Working across one or two BI Ventures products in early stages of development, on small teams;
  • Planning, estimating and delivering new features, fixes and updates in line with the product roadmap and the backlog;
  • Making substantial contributions to the core code base for multiple BIT products;
  • Finding and fixing the root cause of bugs reported by users and colleagues;
  • Building bespoke features and customisation for specific client projects;
  • Communicating with non-technical colleagues to understand user and business problems, and offering technical solutions;


The Behavioural Insights Team brings people together with different skill sets. You must be able to demonstrate a balance of skills across those listed below, but we do not expect you to be exceptional in all the areas listed.

  • Prior experience working in web development;
  • Ability to develop web-based software to specification, while dealing with some ambiguity in requirements;
  • Backend experience building web apps (ideally with PHP or Go) and working with databases (MySQL/MariaDB, PostgreSQL), including schema design;
  • Ability to turn designs into working front-end code (HTML, CSS, JavaScript), built responsively for different devices and screen resolutions;
  • Experience with JavaScript-heavy front-end code and AJAX (SPAs / rich user interfaces - ideally React);
  • Keen to work iteratively, shipping imperfect solutions to enable us to learn and develop;
  • Good communication with non-technical colleagues to understand user needs;
  • Ability to manage your own time across several projects, including some large-scale projects;
  • Creative thinking and pragmatism, challenging existing assumptions and thinking of solutions to implementation problems.


Finally, it would be desirable if you have:

  • Experience writing or integrating with APIs;
  • An interest in software usability and building great user experiences;
  • Familiarity with Git version control;
  • Experience with React Native;
  • Experience working in a startup environment or on a small product team;
  • Mobile app development (Android, iOS) a plus;
  • Experience using statistical software (e.g. R or Python pandas) a plus.

Please note:

  • If you do not already hold the right to work in the UK and/or require sponsorship in order to continue working here, you should think carefully before applying. This is because we will be unable to sponsor you unless there is no other suitably qualified settled worker available to fill the role or your current immigration status means that the resident labour market test will not apply in your case.

  • To find out more about the organisation and the people who work here, visit:

  • The Behavioural Insights Team is committed to a policy of Equal Employment Opportunity and is determined to ensure that no applicant or employee receives less favourable treatment on the grounds of gender, age, disability, religion, belief, sexual orientation, marital status, or race, or is disadvantaged by conditions or requirements which cannot be shown to be justifiable.

  • Some of the personal data you provide to Applied when you apply for a role with The Behavioural Insights Team will be passed on to The Behavioural Insights Team for the purposes of (a) reviewing your application; (b) inviting you for interview; and/or (c) offering you a job and getting you set up as an employee/contractor.

  • If your application is not successful, any personal data provided to us by Applied (including any personal data relating to equal opportunities monitoring as set out above) will be retained by The Behavioural Insights Team for no longer than 6 months after the application deadline has passed (other than in exceptional circumstances where we may need to retain your personal data for longer), at which point your personal data will be securely deleted. We only keep your information for that period in order to allow us to comply with relevant legal obligations.

Role posted - 2018-10-18T09:44:49Z 10:44am, 18th Oct 2018 BST