> Markdown version of [/jobs/ext/2954442-senior-software-engineer](https://www.wearedevelopers.com/jobs/ext/2954442-senior-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior Software Engineer

- **Company:** Sunweb Group
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Multitier Architecture, Agile Methodology, Automation of Tests, Microsoft Azure, C Sharp (Programming Language), Software Quality, Continuous Integration, DevOps, Github, Microsoft Visual Studio, Standard Sql, SQL Databases, Application Enhancement Tool, Spring Cloud, GitHub Copilot, ReactJS, Technical Debt, Build Management, Legacy Systems
- **Published:** September 17, 2026
- **Apply:** https://www.buscojobs.com.es/senior-software-engineer-en-barcelona-ID-372288647

## About the Role

5+ years of experience with C# and .NET
Experience building cloud-native applications on Azure
Strong knowledge of SQL and data modeling
Solid understanding of system design and clean architecture
Experience with CI/CD, automated testing, and DevOps practices
Experience with legacy systems and modernization
Ability to balance speed and quality pragmatically
Ownership mindset and drive to improve systems and processes
Strong stakeholder communication skills
Experience mentoring others and influencing technical direction
Why this role is interesting
You have real influence on architecture and technical decisions
A pragmatic engineering culture focused on impact

## Description

At Sunweb Group, we're building and evolving the core systems behind millions of holidays each year. As a Senior Software Engineer, you contribute directly to how our platform is designed, scaled, and improved.You'll work in a small, autonomous Agile team where ownership, pragmatism, and quality go hand in hand. This role goes beyond coding - you influence architecture, improve engineering practices, and help the department grow.Location:Rotterdam / Girona Sunweb Group office (Hybrid)Start date:October - November ****Availability:FulltimeWhat You'll DoDesign and build scalable, cloud-native applications on AzureOwn technical decisions and contribute to architectureImprove and modernize existing (legacy) systemsDrive engineering practices like CI/CD, testing, and clean architectureIdentify and reduce technical debtCollaborate with product and stakeholders to deliver real impactMentor engineers and contribute to team growthHelp define team standards and technical directionOur tech stackC#, .NET, Azure, SQL, React, GitHub, GitHub Copilot, Visual Studio / VS CodeWe actively leverage AI-powered tools such as GitHub Copilot to improve productivity and code quality.What You Bring5+ years of experience with C# and .NETExperience building cloud-native applications on AzureStrong knowledge of SQL and data modelingSolid understanding of system design and clean architectureExperience with CI/CD, automated testing, and DevOps practicesExperience with legacy systems and modernizationAbility to balance speed and quality pragmaticallyOwnership mindset and drive to improve systems and processesStrong stakeholder communication skillsExperience mentoring others and influencing technical directionWhy this role is interestingYou have real influence on architecture and technical decisionsA pragmatic engineering culture focused on impactInternational product with real scale and complexityOpportunity to own and shape the technical direction and ways of working of the teamWhat We OfferFor a Dutch contract (based in our Rotterdam office):Monthly gross salary between €**** and €**** plus 6 ATV days (based on full-time employment, excluding 8% holiday allowance). Please note: ATV days do not apply to part-time contracts.We enjoy the journey so enjoy 25 holidays based on fulltime employment.For a Spanish Contract (based In Our Girona Office)Yearly gross salary between €******,- and €******,- (based on full-time employment)We enjoy the journey so enjoy 23 holidays based on fulltime employment.Additionally, We OfferEnjoy up to 20% off when booking with our brands for you, your family, and your friends.As an international company we support a hybrid way of working. We provide you with office furniture and IT equipment.A personalized Reflect & Develop Plan to support your career growth.Benefit from coaching sessions designed to support your well-being.Receive work-from-home and travel allowances to ease your daily routine.About Sunweb GroupSunweb Group is one of Europe's largest online travel platforms, with over 1.3 million customers annually. We operate in 8 international markets with 600+ colleagues across Europe. We combine scale with a fast-moving, ownership-driven culture where teams are trusted to build and improve continuously.Here's what you can expect during our selection process:Initial conversation (via video) with our Talent Acquisition SpecialistFirst interview (via video/ live) with the Team Lead and Head of TechSecond interview (via video/ live) with the Team Lead and a team memberSunweb Group is an equal opportunity employer, which means we do not discriminate in any way. We celebrate diversity and are committed to creating an inclusive and safe environment for all employees.#J-*****-Ljbffr


## Related Videos

- [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs)
- [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform)
- [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next)
- [Agile work at CARIAD – Creating a customer web application for controlling the vehicle ](https://www.wearedevelopers.com/videos/200-agile-work-at-cariad-creating-a-customer-web-application-for-controlling-the-vehicle)
- [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment)
- [Empowering Thousands of Developers: Our Journey to an Internal Developer Platform](https://www.wearedevelopers.com/videos/1519-empowering-thousands-of-developers-our-journey-to-an-internal-developer-platform)

## Related Articles

- [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)
- [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)
- [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)
- [Is Software Engineering Hard?](https://www.wearedevelopers.com/magazine/448-is-software-engineering-hard)