Senior Backend Developer

Reposted 14 Days Ago
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Madrid, Comunidad de Madrid
In-Office
Senior level
Security
We are safety experts delivering security solutions to more than 680.000 households and businesses across Europe.
The Role
The Senior Backend Developer will design and develop backend systems for IoT devices, mentor junior developers, and write scalable code using C# and Azure-based technologies.
Summary Generated by Built In

🚀 Join Sector Alarm as a Senior Backend Developer!

📍 Location: Spain (Fuengirola/Malaga - Madrid) or Norway (Oslo) - hybrid role
📢 Department: Tech

Role Overview: Your Day-to-Day

As a Senior Backend Engineer you will play a critical role in designing and developing backend systems that support IoT devices, leveraging modern DevOps practices. You will work with cutting-edge technologies in Azure cloud infrastructure and a microservices architecture, building solutions that protect the lives and homes of our customers. This is a permanent, full-time position reporting to the Engineering Manager.

Since 2019, we have been undergoing a digital transformation—placing technology and data at the heart of our strategy. This role is a crucial part of that journey, where innovation and customer experience drive our success. To learn more about our Tech organization click here.

Key responsibilities 

  • Strengthening and supporting the development team, building software that helps to protect the lives and homes of our customers
  • Writing clean, scalable code using C# .NET Core
  • Writing code and develop according to business and user needs
  • Evaluating new code for reliable architecture, stability, reusability, performance, automation, security and metrics
  • Remaining up to date with the terminology, concepts, and best practices for coding
  • Writing unit and integration tests to cover functionality and reduce regressions
  • Mentoring junior developers and new team members
  • Coordinating with product owners, developers and architects
  • Solving complex development problems and technical challenges - through innovative approaches and problem solving

What we're looking for

  • Relevant BSc or MSc is preferred, applicable senior experience may compensate for lack of formal background
  • 5-7 years of experience as a Backend Developer
  • Strong proficiency in C# and .NET Core.
  • Thorough experience with microservices and APIs (REST and event-based)
  • Azure experience with managing WebAPIs, containers, and web applications.
  • Comfortable with Agile methodologies
  • Experience with SQL and no SQL
  • Skilled in automation and integration testing.
  • Fast ability to learn new systems and software value chains
  • Excellent verbal and written English skills
  • You must identify yourself with our core values; willing to improve, goal oriented, customer focused and reliable
  • A valid work permit in the EU

Nice-to-Haves

  • DevOps and Terraform
  • Expertise with CI/CD and test automation
  • Previous IoT experience

Benefits of working at Sector Alarm Tech

  • Work within a European setup with product presence across 8 countries and opportunities for expansion.
  • Primary IT hub located in Oslo, secondary hub in Fuengirola, Spain, with opportunities for travel.
  • Access to training, certifications, and continuous learning opportunities.
  • Significant autonomy in the role, encouraging initiative and innovation without micromanagement.
  • Agile work environment using Kanban/ScrumBan/Scrum methodologies tailored to what works best for the team.
  • Competitive compensation and benefits package, including informal social gatherings and a collaborative company culture.

About the recruitment process

We will recruit on a rolling basis, so please do not hesitate to apply with a CV in English. A criminal record check will be requested for the successful candidate.

🔥 Ready to make an impact? See what our employees in Tech say about the culture at Sector Alarm:


Top Skills

.Net Core
Azure
C#
Ci/Cd
DevOps
Microservices
NoSQL
Rest
SQL
Terraform
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The Company
HQ: Oslo
152 Employees
Year Founded: 1995

What We Do

Sector Alarm is one of Europe’s leading safety providers with more than 680,000 satisfied and safe customers. We have been in operation for over 30 years and deliver superior alarm solutions to homeowners and businesses across Europe. Providing excellent customer service is extremely important to us and we are proud of our consistent 95% customer satisfaction rating.

Sector Alarm has experienced strong growth over the years and is continuing to expand in both new and existing markets. Today, we are over 3,700 employees operating in Norway, Sweden, Finland, Ireland, Spain, France, Italy and Portugal. Our focus on hiring the right people has enabled us to offer customers state-of-the-art security solutions and gain strong market positions in the countries where we operate.

We offer exciting career opportunities in a company with an ambitious growth strategy and fantastic colleagues. If you share our passion for providing innovative solutions that offer safety and peace of mind, are 100% goal focused and are looking for a fun, fast paced work environment - we would love to hear from you.

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