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Oferta sólo disponible en Inglés
Oferta cerrada el 23/09/2022

Senior Data Engineer

🧿 Product💪Tech Challenge🪅 Culture🦄 Start-Up

“Data beats emotions.”

We are on the verge of becoming one of the most successful companies, reaching a break even in less than a year 😏. And just, by being truly diligent about caring for companies' data. Are you ready to help us achieve this and much greater feats?

¿Qué harás?

CQISense is a customer-focused data company, providing outstanding data insights through correlation of companiesʼ dimensions. Conwayʼs law is eventually happening in every company, so they stood up and shows that breaking silos is profitable, and a fun 🥳 problem to solve.

“Big data is dead, long live big data.” Theyʼ ve tried and just a few succeeded. Data is useless unless focus and knowledge take place. Companies are growing faster than their ability to understand customersʼ processes. That is where their product shines, proving that customer care is not a department but a whole company goal.

They know why data is hard, it is all about context. Information is just a breadcrumb unless. After 15+ years in the Telco field, founders become experts in translating complex problems to clear processes, and they are ready to productionize it 🏭. The aim is simple, create the most comprehensive and detailed data aggregation company in the world, and they will need you to make it real.

Tu evolución

Tu primer día

En 1 mes

You will know all the jargon (ARPU / CHURN / OLT / etc..) about data aggregation for telecommunications companies and push in production data pipelines insane amount of data. You will participate in a ton of product definition meetings and if you will win them in some of the outdoor activities we like to do some time.

Tus responsabilidades

  • You will create, maintain and improve data pipelines, end to end, from the far end of a data point in a cluster of servers across the ocean to fine-tune the graph in the customer report website.

  • Provide guidance and lead others solving data integrations between ML, ETL, cloud storage, and all the pieces involving stream and pipelining information in real-time.

  • Work with a focused fast-paced team, integrating your knowledge and expertise with the needs and skills of the whole team.

¿Cómo lo harás?

They believe in great people do great products so, they are obsessed hiring great people first. As you can expect, they build things iteratively and focusing on functional delivery while keeping impressive operational delivery times and best practices, they love what they do and it permeates On what they create.

🌊The Spice must flow 🌊

"LISTEN TO ME!! The spice must flow… the spice has given me accelerated evolution for four thousand years… it has enabled you to live two hundred years… the spice helps make the sapho juice, which gives the red-lipped mentats the ability to be living computers… the secret side of spice… the water of life."

Dune (1984)

They love to see the data flowing, and for so will end knowing by hand KPIs, Tracing Alerts, Logs, and Fitness functions to foresee operational bottlenecks and prevent them. They like to keep things simple, you know how hard is to synthesize the simplicity out of deep complex structures, right?

They put on production every couple (of tens) of times a day, and they will like to increase our delivery time even further, so any tips are welcome!

To organize the delivery, they use Scrum adapted to the size of the team and the needs, and they use Kanban boards to organize splits. This process is iterative ans is always improving: the challenge is to create real engineering processes as the team grows.

Talking about their stack: they build everything with Python 🐍 (Sanic and Swagger) and Go. The aim of the project is to Keep It Simple, always, because "Simple is better than complex". The infra is build with Terraform + Terragrunt, with a simple scope, as same as CI/CD, with GCP and its tools (like Couldbuild). The communication between teams and members is via Slack and Jira, and they are looking to improve their ticketing system.

¿Cuándo trabajarás?

They have real flexible working hours. They only expect you to be available at the usual times of the day, 9:00h to 18:00h. (CEST - Madrid) with one hour for lunch up to you. The rest of the time, you can be working before or after this shared time with the whole company. Some people have different needs, like taking kids from school, and theyʼ re committed to having a great work-life balance ⚖️ for everybody.

Día laborable

Jornada completa


22 días

¿Dónde trabajarás?





Actually… Wherever you want to! This position is remote-friendly 🏠, just we will likely want to know you first, so it will be ideal if we're able to work at least a couple of months in our amazing offices in Majadahonda. Not all places have views of a forest, and we take some pride in it! After the initial onboarding, you can be whenever you like, as long as you will be able to attend when the founders came to share great news (with is usually a week every other month)

¿Con quién trabajarás?

Right now theyʼ re 7+ amazing peers, with an open and horizontal structure. These are some of your future coworkers.

  • Iván Marbán (Founder and Head of Product and Advanced Analytics): He is the brain 🧠 of the company and he always keeps all the team on track providing the spicy data.
  • Asier Fernandez (Head of Core): He is the Healer 🧙‍♂️ of the team, always finding solutions to the impossible tasks, and the master of simplicity wins it all.
  • Enrique Paredes (Head of Engineering): He is the Tank 💪 of the team. The last resort when everything else failed, and the last champion of refactorland.
  • Javier Gómez (Head of Infrastructure): He is the DPS 🏹 of the team. He is always willing to give a hand and always obsessed to name things right, he knows that good namings require no explanation

Besides, they have some incredible founders (just ask for Samu or Max) and a side company that helps them with everything theyʼ re not able to reach.

¿Qué piden?

  • Being able to understand complex pipelining patterns, data structures, and streaming concurrent distributed applications or hold a degree in a quantitative field (CS, Engineer, Math, Physics, … ).
  • You have built production data pipelines in the cloud, setting up data-lake and server-less solutions. On top of that, you have hands-on experience with schema design and data modeling.
  • You are comfortable working in containerized cloud developments, and familiar with the integration of public and private APIs.
  • Implementing monitoring integrations to identify changes in real-time Familiar with setting Data Governance best practices.


  • You have at least 3 years of professional experience in the Software Development/Data Platform Engineer field.
  • Proven knowledge of Python is required, Golang/ Javascript will be a plus.

This will be good

  • You have strong SQL skills and knowledge and familiarity with other distributed data stores such as ElasticSearch, Druid, BigQuery, or Redis. Strong understanding of Data Orchestration tools (ie. Apache Airflow).

This gives extra points

  • Open to try new technologies and programming. We love to develop vertically, so creating our own web views is our daily basis and you should not be afraid of doing it!



  • Strong communication skills. The right candidate can thrive in an environment of asynchronous conversation, and translate functional requirements into code. languages.

This will be good

  • Strong organizational, time-management skills with the ability to succeed in a fast-paced environment with changing requirements and priorities.
  • Highly motivated, independent, and deeply passionate about solving complex and translating them to the final customers.
  • Fluency in English



  • Python
  • SQL

Estaría bien

  • Elasticsearch
  • BigQuery
  • Google Cloud
  • Airflow
  • K8s

Suma puntos

  • Vue
  • Golang

Otras habilidades


  • Capacidad de autogestión
  • Pensamiento analítico
  • Comunicación verbal

Estaría bien

  • Aprendizaje Continuo
  • Autonomía en el aprendizaje

Suma puntos

  • Proactividad
  • Tolerancia a la incertidumbre

¿Qué ofrecen?





🗺️ Career Plan.

🖥️ Top-of-the-line equipment. (MacBook Pro, 27”+ screen…)

💱 Flexible remuneration

👋 Welcome pack

🫂 Work-live balance

🧑‍⚕️ Private health insurance


Seguro de salud
Eventos de formación internos
Dinámicas y eventos de teambuilding
Pack de bienvenida
Retribución Flexible

Capacidad de transformar parte del salario en pagos en especie como: cheques-guardería o Tickets Restaurant.

Posibilidad de elegir equipo

What the FAQ?

 Yes, as long as you have an EU or UK passport... For administrative reasons, we won't bore you.

 The truth of the matter is that they really need to fill the position like YESTERDAY, so they will try to be as agile as possible. Having said this, we are talking about a very important and critical position for the company, so the process has several phases:

  •  Screening (15-20 min) with People to get alignment on your mission.
  • Technical Test: you can share a project you've made or their tech test. As you prefer.
  • Test review and final talk with some members of the team.