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Big Data Backend Engineer at Tessian
London, GB

We believe technology should secure the digital interactions of employees without compromising user experience or productivity. That’s why we’re building the world’s first Human Layer Security platform. 

We’re a team of mathematicians, data scientists & engineers building breakthrough machine learning and natural language technologies to analyse, understand & protect enterprise email networks.

Tessian is backed by leading technology investors Sequoia Capital and Accel who have helped build many industry defining companies including Stripe, Spotify, Crowdstrike and Docker.

We'd love to hear from you.

Engineering at Tessian

Read more about Engineering at Tessian:

As a high-growth scale-up, our email datasets are growing at an exponential rate. This is a great problem to have as it allows us to train best-in-class machine learning models to prevent previously unpreventable data breaches. We have scaled to the point where our current data pipelines are not where we want them to be, this is why we’re looking to hire our first Big Data Backend Engineer.

You will sit in our Defender Algo team and work day-to-day with our Data Scientists and Engineers to engineer solutions to iterate quickly on terabytes of data. We view this role as a hugely impactful, high-leverage role and strongly believe that if we can can query all of our data, in near real-time and using scalable systems then we can deliver more value to our clients through the data breaches we prevent.

Your responsibilities will include:

Building systems to efficiently handle our ever increasing volume of data

Designing and implementing data pipelines as well as owning the vision of what our systems could achieve in the future

Working with Data Scientists to train, version, test, deploy and monitor our machine learning models in production

Designing systems to expose data to our product and engineering teams in a performant way

Mentoring the Data Science team on how to work with data at scale

We're looking for someone who:

Is a highly-skilled developer who understands software engineering best practices (git, CI/CD, testing, reviewing, etc)

Has experience working with distributed data systems such as Spark

Has deep knowledge of the AWS ecosystem and has managed AWS production environments

Has experience with Docker and container orchestration systems like AWS ECS and Kubernetes

Some interesting projects we’re working on:

An ETL pipeline transforming millions of tiny files on AWS Glue to the Parquet file format for efficient querying

Designing existing pipelines to use Spark setting ourselves up to handle massive future scale

Building a new Flask app framework allowing us to standardise how we deploy all models to production

Dumping terabytes of data from production databases, in real-time in a performant, scalable and secure way

Building a lightweight data labelling system designed specifically for labelling emails at scale

Why we think you'll love it here:

It’s important to us that all Tessians are part of the journey we’re on, so we offer equity options with every role and benchmark to provide above market rate salaries - there’s plenty more too….

Be at your best, both inside and outside of work

A full week of work-remote a year, in addition to 25 days of paid holiday

Flexible working hours and working from home

Curate your career with development experiences uniquely suited to you

We’re family friendly, with policies built to support you in all stages of life

High-quality tech kit provided for you to work on including Tessian ANC headphones

If you're relocating to join the team, we'll provide a contribution to help with your costs

Because everyone loves food...

A plethora of breakfast options, delicious snacks, drinks and a top-of-the-range coffee machine

Team lunch provided on Fridays - normally with more hummus than you can shake a stick at

Dinner budget for those times you just can’t tear yourself away

Beyond work

Elite membership of the Tessian House System...

On Fridays we stop at 5 and share team updates and drinks

Monthly team socials & a big, whole team extravaganza every quarter

Never-ending ping-pong tournaments

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