Senior Data Engineer - AWS, DevOps

Senior Data Engineer
Hybrid working, London
Blis is an award-winning, global leader and technology innovator in big data analytics and advertising. We help brands such as McDonald's, Samsung, and Mercedes Benz to understand and effectively reach their best audiences.
We are looking for solid and experienced Data Engineers to work on building out secure, automated, scalable pipelines on GCP. We receive over 350gb of data an hour and respond to 400,000 decision requests each second, with petabytes of analytical data to work with.
We tackle challenges across almost every major discipline of data science, including classification, clustering, optimisation, and data mining. You will be responsible for building stable production level pipelines maximising the efficiency of cloud compute to ensure that data is properly enabled for operational and scientific cause.
This is a growing team with big responsibilities and exciting challenges ahead of it, as we look to reach the next 10x level of scale and intelligence.
At Blis, Data Engineers are a combination of software engineers, cloud engineers, and data processing engineers. They actively design and build production pipeline code, typically in Python, whilst having practical experience in ensuring, policing, and measuring for good data governance, quality, and efficient consumption. As a Blis data engineer, we seek to understand the data and problem definition and find efficient solutions, so critical thinking is a key component to efficient pipelines and effective reuse, this must include defining the pipelines for the correct controls and recovery points not only function and scale. Design, build, monitor, and support large scale data processing pipelines.
Help Blis explore and exploit new data streams to innovative and support commercial and technical growth
5+ years direct experience delivering robust performant data pipelines within the constraints of direct SLA’s and commercial financial footprints.

• Proven experience in architecting, developing, and maintaining Apache Druid and Imply platforms, with a focus on DevOps practices and large-scale system re-architecture
• Mastery of building Pipelines in GCP maximising the use of native and native supporting technologies e.g. Mastery of Python for data and computational tasks with fluency in data cleansing, validation and composition techniques.
• Hands-on implementation and architectural familiarity with all forms of data sourcing i.e streaming data, relational and non-relational databases, and distributed processing technologies (e.g. Fluency with all appropriate python libraries typical of data science e.g. pandas, scikit-learn, scipy, numpy, MLlib and/or other machine learning and statistical libraries
• Excellent working understanding of server-side Linux
• Professional in managing and updating on tasks ensuring appropriate levels of documentation, testing and assurance around their solutions.

Practical experience working with relational databases, including advanced operations such as partitioning and indexing
Knowledge and experience with tools like AWS Athena or Google BigQuery to solve data-centric problems
Understanding and ability to innovate, apply, and optimise complex algorithms and statistical techniques to large data structures
Experience with Python Notebooks, such as Jupyter, Zeppelin, or Google Datalab
to analyse, prototype, and visualise data and algorithmic output
Blis is the only omnichannel DSP that unites telco data, real-world movement patterns, and transactions to deliver a complete view of the consumer. Powered by T-Mobile and built for precision at scale, Blis' omnichannel platform helps marketers map the full purchase journey – from impression to transaction – and expand their audience reach, driving incremental results across every screen.