Cloud Software Engineer - IoT in Madrid or Remote


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Job Description

See yourself at Twilio

Join the team as a Cloud Software Engineer - IoT

Who we are & why we’re hiring

Twilio powers real-time business communications and data solutions that help companies and developers worldwide build better applications and customer experiences.

Although we're headquartered in San Francisco, we have presence throughout South America, Europe, Asia and Australia. We're on a journey to becoming a globally anti-racist, anti-oppressive, anti-bias company that actively opposes racism and all forms of oppression and bias. At Twilio, we support diversity, equity & inclusion wherever we do business. We employ thousands of Twilions worldwide, and we're looking for more builders, creators, and visionaries to help fuel our growth momentum.

About the job

We are looking for a mid-level software engineer to collaborate with a team of other engineers who build and maintain our cloud components and services. It is complex, highly available and scales to the demands of IoT devices. It enables customers to connect their IoT devices around the globe with low latency and resilience.

You will work with specialists in the world of software development and telecommunications, helping design, implement, test and maintain server infrastructure to enable IoT connectivity and management.

This job is for you if you have an interest in the challenges of reliably scaling network connectivity and are keen to learn about highly concurrent reliable systems. A willingness to both collaborate but also work independently to solve problems and then share this knowledge across the team is essential. This will be an opportunity to grow your knowledge and take your engineering and team collaboration skills to the next level.


In this role, you’ll:

  • Work predominantly remotely (the existing team is geographically spread); Use collaborative tools, slack, zoom, gdocs etc.; Twilio has a policy of encouraging flexible working patterns and will proactively encourage you to manage your own time responsibly to fit your own and Twilio’s needs.
  • Work with product owners to help define requirements; QA to define appropriate test cases
  • Be responsible for collaborating with other team members to design, implement and deliver new functionality and resolve problems.
  • Be responsible for writing automated unit, integration and system tests for features and ensure a high quality bar.
  • Be responsible for responding to system incidents on a team rotation after an appropriate period of training


Not all applicants will have skills that match a job description exactly. Twilio values diverse experiences in other industries, and we encourage everyone who meets the required qualifications to apply. While having “desired” qualifications make for a strong candidate, we encourage applicants with alternative experiences to also apply. If your career is just starting or hasn't followed a traditional path, don't let that stop you from considering Twilio. We are always looking for people who will bring something new to the table!


  • BS/MS/BTech in Computer Science or related field, or equivalent work experience
  • 2+ years of demonstrable experience of software development and teamworking
  • Familiarity with agile processes, continuous integration and test automation
  • Familiarity with standard software engineering practices, configuration control, unit testing, system testing etc.
  • Strong interpersonal, collaborative and communication skills
  • Schedule: ability to work non-standard, on-call rotation weekend and holiday hours


  • Familiarity with functional programming and concurrent software development patterns; Elixir/Scala knowledge would be a bonus but not essential.
  • Experience of cloud environments (AWS, Azure, GCP)
  • Familiarity with networking protocols and security.
  • Familiarity with containerisation (docker etc) and cloud deployment orchestration concepts


The position is predominantly remote, you can work from anywhere within the United Kingdom, Poland, Spain. If based in the UK, you will also have flexible access to the Cambridge or London offices if you desire. There will be occasional team meetups in either Cambridge or Central London.

What We Offer

There are many benefits to working at Twilio, including, in addition to competitive pay, things like generous time-off, ample parental and wellness leave, healthcare, a retirement savings program, and much more. Offerings vary by location.

Twilio thinks big. Do you?

We like to solve problems, take initiative, pitch in when needed, and are always up for trying new things. That's why we seek out colleagues who embody our values — something we call Twilio Magic. Additionally, we empower employees to build positive change in their communities by supporting their volunteering and donation efforts.

So, if you're ready to unleash your full potential, do your best work, and be the best version of yourself, apply now!


About Twilio

  • Saa S

  • San Francisco, CA, USA

  • 1000-5000

  • 2008

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