Senior Software Engineer

Overview

Senior Software Engineer (C++)

Come work on fantastically high-scale systems with us! 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. In doing this, we are industry champions in our commitment to the ethical use of data and believe people should have control over their data and privacy. With offices across four continents and over 270 people on the team, we are a truly international company with a global culture and scale. We’re headquartered in the UK, financially successful and stable, and looking forward to continued growth. We’d love it if you could join us on the journey

!
We are looking for brilliant, creative, curious, and experienced C++ software engineers to join our real-time applications team. This team is responsible for our high-throughput, low-latency trading and measurement systems that routinely handle hundreds of thousands of requests per second, leveraging multi-level machine learning models covering classification and optimisation, all with a 98th percentile latency of under 20ms. These systems both create and use massive data volumes to make intelligent trades on dozens of global marketplaces. They also help with a range of other offline and online projects, from our proprietary algorithms and systems for location data processing to integrations with third-party technologies. As a tech-first product company, this team works on things that are visible and matter to customers and the busines

s!
Software engineers at Blis are more than just programmers - they’re people who are builders, designers, and problem solvers at heart, people with a passion to make things better. You will help innovate and design new features and products, work with the team to build them, and support and grow them after they’re live. We discuss ‘why’ as much as ‘what’ and ‘how’ in our planning meetings because we want you to see and help shape our future. We value soft boundaries between teams and you’ll get to work with other engineers, data scientists, and product managers to see how it all comes together. As engineers, you’ll help us follow good design principles, especially those inspired by Lean Development, and you’ll enjoy learning, growing, and pushing yourself and the products in new ways. And, of course, you’ll enjoy being part of a team that supports each other through mentoring, brainstorming, and pairing up to solve ambitious challeng

es.
The R

• ole:Innovate, implement, support, and iterate on our real-time application systems, infrastructure, and
• codeWrite and improve high-performance, highly efficient, and highly maintainable
• C++Ensure our designs and systems are highly available, resilient, and se
• cureSupport and mentor other members of the

team
Required Knowl

• edge:C++, including
• BoostNetworking topics from asynchronous connection handling to TCP/IP param
• etersConcur
• rencyRESTful APIs and web-serving con
• ceptsData structures and algorithms at
• scaleRelational and non-relational databases and con
• ceptsServer-side Linux use and administr
• ationCloud infrastructure concepts and utilis
• ationEngineering design principles and when to go fast and when to go

slow
Desired Know

• ledge:Devops topics including CI/CD, Jenkins, Docker, Kubernetes, Prometheus & G
• rafanaMachine learning algorithms and how to implemen
• t themPrior work with algorithmic trading s
• ystemsUnderstanding of compiler output (ass

embly)
Expected Back

• ground:5+ years experience as a systems engineer or architect for complex, high-performance
• systemsDegree in Computer Science, Software Engineering, or

similar
Key Technologies We Use (not necessarily required for th

• e role):Google Cloud, Google Cloud Composer, BigQuery, Spark, Solr, Elasticsearch, Druid, PostgreSQL, ScyllaDB, Redis, Kafka, Flink, Docker, Kubernetes, Kibana, Jenkins, Prometheus, Grafana, Github, C++, Python, Scala, Compiler

Explorer
What Blis C

an Offer:
We want you to be well and thrive and we care about your growth as a person and in your career. Our benefit

• s include:
  Comprehensive private
• healthcareMatched pen
• sio
• n schemePTOEnhanced paternity and mate
• rnity leaveCareer coaching and develo
• pment pathsHyb
• rid working

… and mo

re!
About us
Blis is the audience-first platform that doesn't rely on personal data. We’re an integrated planning and buying platform that delivers scaled, relevant and high-performing audiences, helping the world’s largest brands and media agencies achieve

their goals.
Over the past 18 years, Blis has built its reputation on delivering award-winning location-powered advertising solutions. In today’s consumer-centric landscape, Blis is transforming the role of location data by combining it with a broad range of rich and powerful datasets to give our clients the deepest audience understanding available. Our unique approach to integrated planning and buying provides personalised targeting and performance without reliance on personal data. We serve relevant ads to the highest-value addressable audiences across any channel and deliver our clients’ campaign outcomes every time, from brand awareness and engagement through to store/site vis

its and sales.
Established in the UK in 2004, Blis now operates in more than 40 offices across five continents. Working with the world’s largest and most customer-driven companies across all verticals including Unilever, Samsung, McDonald's, HSBC, Mercedes Benz and Peugeot, as well as every majo

r media agency.
At Blis our vision is to be the undisputed leader in location-powered advertising and analytics. We believe that values create behaviours and behaviours create a culture. Our company values are a huge part of our DNA. We are fully committed to creating a powerful culture of inclusivity and belonging that embraces diversity, encourages people to bring their authentic selves to work, educates everyone at Blis about matters of equality and engages with the wider industry community to driv

e social change.
As an equal opportunity employer, we treat all our employees and job applicants fairly and equally. We oppose all forms of unlawful and unfair discrimination and take all reasonable steps to create a work environment in which all employees are treated with respect and dignity. We don't condone or tolerate any form of harassment, by employees or by others who do

business w

ith u

s.
Our values
BraveWe're le

aders not followersAn innovation and growth mindset helps us solve everyday challenges and achieve breakthroughs.

Our passion drivesus to innovate. We don’t see barriers,

just possibilities.We take ownership and hold ourselves accountable for outcomes, good and bad – and we d

on’t pass the bu

ck.
Love our clientsW

e're client obsessedWe do what we say and build trusted relationships with our partners for the long term. We act with integrity. We put our clients at the centre of our business. We obsess over the best insights, ideas and solutions to deliver WOW and work with honesty and accountabi

lity to g

et it done.
In

clusiveWe're one teamWe are empathetic and embrace di

versity. Everyone hasa voice and can bring their authentic

self to work. We careabout and support each other – w

ith humility and goodhumour. Mutual respect and wellbei

ng are key. We striveto eliminate bias and be

open and transpa

rent.
Solutions drive

nWe're action orientedSpeed matters in business, so we'

re solution-driven andaction-oriented. We value simplification and calculated risk taking. We are lean, agile and reso

urceful self-starters.