Senior Software Engineer, Engineering Scalability in Barcelona or Remote


80,000 - €105,000
Share offer

Job Description

Please do not apply for this role if you are not physically located in Europe, Africa or the Middle East (UTC-1 to UTC+3). While this is a remote position, we can not consider candidates that are not based in these regions. You can find a detailed explanation in our Recruitment FAQs.

At Hotjar, we’re creating Product Experience Insights software for digital product teams. We help show how users behave and what they feel strongly about, so product teams can deliver real value, fast.

We're looking for an enthusiastic and resourceful software engineer, passionate about building Hotjar foundational systems and infrastructure, someone who loves being part of a team, whilst enjoying the autonomous nature of working remotely.

Working as part of a fully remote squad in the Scale & Support tribe, your role will be centered around engineering core systems to serve the scaling needs of our product. We are looking for people with strong software engineering fundamentals, experienced with one of our main languages (Python and Go) and with high throughput backend systems, networking, message queues and data processing technologies.

What you will do:

  • Own backend services end to end, from creating the first RFC to supporting them in production

  • Work on scaling our data ingestion pipeline, working with 10+ million messages/min sent to Kafka, performing stream processing on the data

  • Engineer a scalable file storage system capable of handling 150+ million new files per day

  • Optimize the way we schedule services on Kubernetes

  • Maintain our CDN and routing components with performance and simplicity in mind

  • Optimize the way we distribute backend tasks using messaging queues - Celery is our default now

  • Help debug complex distributed systems issues

  • Create and document foundational libraries for product squads to integrate with our monitoring, error reporting and logging tools

  • Leverage your expertise to provide feedback during code reviews or in RFC documents and design proposals


  • 5+ years background in building and maintaining high throughput web services or backend systems

  • 5+ years demonstrable experience with Python
  • Familiar with the use of databases and message brokers/queues at scale - PostgreSQL, Redis, ClickHouse, Kafka, RabbitMQ are some of the main technologies we use

  • Familiar with public cloud infrastructure - we deploy everything on AWS, but if you have experience with GCP or Azure that’s fine too.

  • Experience with Linux and system programming a big plus

  • Desire to work in a respectful, transparent, and collaborative work environment, following Hotjar’s company values, culture and ways of working.

  • Must submit to a background check confidentially processed by our third-party.

Compensation Range:

The compensation range for a team member in this role is €80,000 to €105,000 annually where the offer typically falls in the range of €80,000 to €90,000.

Hotjar compensation approach

Our ranges are established after performing market research but the specific compensation amount of the offer will be determined based on relative experience, skills, and equity across the team. We encourage all candidates to read our Recruitment FAQs to further understand our approach to compensation and how we structure our contracts.

Hotjar Perks

In addition to the monetary compensation, we provide all team members with an assortment of unique and popular perks valued at more than €10,000 a year, plus stock options and 40 days of annual leave. These have been chosen to reflect our values and ideals, be it encouraging constant learning with our Personal Development Budget, a great work/life balance with the Holiday Budget, or a happy, healthy team with our Wellbeing Budget.

Here at Hotjar, we welcome team members of all backgrounds, identities, and experiences. Working with respect is built into our core values: we are honest, tolerant, and inclusive. We celebrate the uniqueness and strength found in diversity. We all commit to creating a safe working environment and are allies to those less privileged. And we fully believe that living by these values helps us to make our company, and our product, better.


About Hotjar


Other software engineer jobs that might interest you...