developer-apis enterprise-software telephony
Berlin, Germany

Sr. Software Engineer- IOT / Backend (Berlin)


Senior Software Engineer - IoT / Backend

Twilio's IoT business unit is growing rapidly and seeking a Senior Software Engineer to help build backend services for the Wireless SDK that is part of the NB-IoT product. Twilio’s NB-IoT product was launched at Signal 2018 in partnership with T-Mobile as the first NB-IoT Connectivity solution in North America.

Organizationally, the role sits within a small team dedicated to evolving and hardening our NB-IoT product . From a subject matter perspective, you'll work on making the Twilio Wireless SDK the best solution in the industry for developing connected hardware using the latest protocols for IoT connectivity. From a roadmap perspective, you'll collaborate with the IoT product team.

The Senior Software Engineer for the IoT (Wireless) team will be responsible for the delivery of software from concept to production deployments and monitoring. You will work on the implementation efforts alongside a team of seasoned and junior engineers. Once deployed, you will be responsible for helping customer support assist and troubleshoot problems as they pop up in the field.

The person for this job definitely is:

  • Proficient in the Scala or Java programming language
  • Comfortable with Python, Bash or another scripting language
  • Comfortable with a relational database, ideally MySql.
  • Experienced in implementing protocols directly on TCP and UDP
  • Strong in diagnosing and root-causing problems in distributed systems
  • Able to work well and communicate effectively with other team members and management

The person for this job ideally is:

  • Experienced with IoT wireless (LTE, NB-IoT, WiFi, Bluetooth, SIGFOX, LoRa, ZigBee, etc) protocols
  • Familiar with CoAP and MQTT
  • Familiar with AWS IoT or Azure IoT
  • Familiar with Netty or similar libraries
  • Familiar with C/C++


The rapid rise of IoT is contributing to Twilio's continued growth as a company. By ensuring that we are solving the right problems for customers, you'll not only make a significant contribution to Twilio's success, you'll enable customers to imagine and create IoT solutions that were previously out of reach.

With this role, the IoT team is committed to providing an exceptional developer experience through a rich device SDK in addition to our programmable interfaces. Our goal is to ensure customers can easily build, test and deploy connected solutions at scale.


Twilio is a company that is empowering the world’s developers with modern communication in order to build better applications. Twilio is truly unique; we are a company committed to your growth, your learning, your development and your entire employee experience.  We only win when our employees succeed and we're dedicated to helping you develop your strengths. We invest in weeks dedicated to tackling hard problems and creating your own ideas. We have a cultural foundation built on diversity, inclusion and innovation and we want you and your ideas to thrive at Twilio.


This position will be located in our office at 375 Beale Street in San Francisco. You will enjoy our office perks: catered meals, snacks, game room, ergonomic desks, massages, Wednesday dinners, bi-weekly All Hands and more. What you will also get to experience is a company that believes in small teams for maximum impact; seeks well-rounded talent to ensure a full perspective on our customers’ experience,  understands that this is a marathon, not a sprint; that continuously and purposefully builds an inclusive culture where everyone is able to do and be the best version of themselves.


About us


Founded in 2008, Twilio has over 1,000 employees, with headquarters in San Francisco and other offices in Bogotá, Dublin, Hong Kong, London, Madrid, Mountain View, Munich, New York City, Singapore and Tallinn.


More than 2 million developers around the world have used Twilio to unlock the magic of communications to improve any human experience. Twilio has democratized communications channels like voice, text, chat, and video by virtualizing the world’s telecommunications infrastructure through APIs that are simple enough for any developer to use, yet robust enough to power the world’s most demanding applications. By making communications a part of every software developer's toolkit, Twilio is enabling innovators across every industry — from emerging leaders to the world’s largest organizations — to reinvent how companies engage with their customers.


Twilio is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal opportunity regardless of race, color, ancestry, religion, gender, gender identity, parental or pregnancy status, national origin, sexual orientation, age, citizenship, marital status, disability, or Veteran status and operate in compliance with the San Francisco Fair Chance Ordinance.


Work with this stack