habito is looking for a full-time senior engineer to join our six-strong team of full-stack engineers. Our core development values are strong, static typing and correctness, rigorous automation (in both testing and infrastructure) and everyone having a say.

The stack:

On the back end we have an HTTP API written in Haskell (and built using stack) with PostgreSQL serving as the persistence layer. All of our data is event sourced thanks to PostgreSQL's great support for relational and blob data (e.g. jsonb) and some in-house libraries for handling ES/CQRS in a type-safe (or what we believe to be, as far as possible) manner. We lean heavily on GHC and its extensions and are also using some of the bigger power-to-weight-ratio players like lens and conduit.

The front end is written in PureScript on top of React and Redux (the bindings to which are our own but are both quite thin and based on the design of purescript-react and later pux).

Infrastructure wise we are sitting atop AWS and using Docker to manage containment. Jenkins manages continuous integration and deployment using a combination of AWS' Java SDK and some management code written in Scala.

The job:

While we're a technology company first and foremost, initially we're trying to make the UK mortgage brokering market a better place. This means building and maintaining our website, but it also involves a slurry of behind-the-scenes work integrating lenders, insurers, conveyancers and all the other players in the space as we seek to introduce robust automation into what is currently so many manual processes. Slack bots, job queues, working around the fact that some actors don't have APIs -- you'll get to handle it all!


A passionate developer who cares about clean code and code quality; a full-stack polyglot.

An experienced engineer familiar with automated testing and deployment.

Experienced with functional programming and domain-driven design or simply interested and capable of learning on the job. We just want bright people.

Care about UX and UI; you have a fundamental aversion to ugliness in product!