Junior Developer

Information for recruitment agencies

We have appointed a recruitment agent on a sole agency basis.
‍If you’re a recruitment agent, and would like to get in touch with us, please use: jobs@haplo.com

Please don’t phone!

To apply, or if you have any questions, please email jobs@haplo.com.


We are currently recruiting for graduate software engineers to join our team immediately, or after they graduate in Summer 2019.

We’re looking for bright and motivated developers to join our development team for Haplo Research Manager, our open source product for managing research at Universities.

This is a great opportunity to refine your development skills in a supportive team focused on excellent software engineering. You’ll be actively involved in every aspect of the software development process, and write software used by people who really love the work you do.

  • Based in Brockley, London (SE4) UK (a minute’s walk from Brockley station)
  • Salary around £30k
  • Full-time position

You’ll be working on top of our open source in-house application framework, designed for building applications which manage large amounts of semi-structured data. You won’t be alone however. As our new team member, you will:


You’ll be working in a spacious, light-filled office in a new business development in Brockley.

We believe in good coffee, sensible working hours, and valuing the contribution of every member of the team.

You’ll just need:


There’s some notes on our technology stack below, but you don’t need any experience of the technologies we use. We’re really good at teaching early stage developers everything they need to know.

We offer:



Haplo is an equal opportunities employer, and welcomes applications from developers from all backgrounds.

You must have a right to work in the UK.

Information for recruitment agencies

We have appointed a recruitment agent on a sole agency basis.
‍If you’re a recruitment agent, and would like to get in touch with us, please use: jobs@haplo.com

Please don’t phone!

Technology Stack


Our technology choices have been driven by a desire for reliability and no surprises. We believe a production system is the last place you want excitement, and don’t want to work out-of-hours fixing things. This means we’ve gone for tried and tested runtimes, languages and deployment methods, but used them in imaginative ways so they’re as productive as anything else available.

This has paid off. We’ve only had a few minutes downtime in all the years we’ve been hosting applications for our customers, and it’s quick and easy to build new features and extend existing capabilities.

We’ve taken a polyglot approach, using the best language and approach for each task, with the majority of the application running on the JVM. The platform is mainly written in JRuby, Java and JavaScript, with our custom object store implemented as C++ extensions to PostgreSQL. Our infrastructure and deployment tools are written in Python.

Our products and client specific customisations are implemented as server-side JavaScript plugins, which script the rest of the platform. As we build custom applications, we refactor to extend the platform, making future development even easier and faster.

We host the application on our own hardware for control and performance, and because our customers have strict security requirements. We have automated deployment, using Puppet controlled by our own deployment scripts. We can bootstrap a new server or development VM in minutes, with cryptographic assurance that we’re running the code we intend to run. Deploying a new version is one command to publish it, and another command to deploy it, and we release a new version every few days.

But the thing we’re most proud of is the quality of our work. We’ve treated every single bit of feedback and support request as a bug report, and fixed it. This dedication to quality and the user experience mean our users are delighted with our work, don’t need to call us for help, and are a pleasure to work with.