Senior Software Engineer, Backend
New Yesterday
Why Walr?
Walr is redefining how insight professionals collect and use data worldwide. By unifying fragmented research processes, we deliver faster, more reliable, and more innovative solutions. Our recognition as a Best Workplace in Tech™ and Best Workplace in Wellbeing™ reflects our culture of growth, innovation, and inclusion.
Join us to lead the way in building impactful technology.
Your Mission
As a Senior Backend Software Engineer, you’ll design, develop, and lead the delivery of complex backend systems. You’ll mentor peers, influence technical direction, and ensure reliability, scalability, and security at every stage.
This role is about leadership in execution, ownership of outcomes, and shaping your product’s future.
How You’ll Make an Impact
- Lead the design and delivery of complex backend systems with C#, .NET, CosmosDB, and MS Azure.
- Build high-performance APIs for integration across the Walr platform.
- Take ownership of system health, proactively resolving production issues and ensuring resilience.
- Set and uphold technical standards across the team, promoting maintainable and scalable code.
- Drive architectural discussions, balancing technical excellence with business priorities.
- Mentor and coach engineers, multiplying team capability.
- Collaborate across teams (product, design, QA, customer success) to deliver solutions that delight clients.
- Step up as a technical leader in team ceremonies, knowledge-sharing sessions, and cross-team initiatives.
- Innovate by identifying technical improvements and introducing new tools or approaches.
- Influence hiring and onboarding to help build a high-performance engineering culture.
Skills That Set You Up for Success
- 5+ years of experience designing and delivering complex backend solutions.
- Expertise in C# and .NET.
- Proficiency in building secure, scalable APIs.
- Strong background in cloud platforms (MS Azure preferred), microservices, and serverless architectures.
- Deep experience in DevOps/DevSecOps practices, including CI/CD, observability, automation, and security.
- Proficiency with SQL & NoSQL databases (CosmosDB preferred).
- Experience leading technical discussions and setting direction.
- Strong product mindset, connecting technical work to customer and business value.
- Excellent communication skills, equally effective with technical and non-technical audiences.
Bonus Points For
- Experience defining and establishing design standards and principles.
- Experience with SaaS platforms and complex data models.
- Microsoft certifications such as Azure Developer, CosmosDB Developer, DevOps Engineer, or Solutions Architect.
What We Offer
Alongside offering a competitive salary, take a look at what benefits we offer for your region by taking a look at our Walr External Handbook.
How We Work at Walr
Our culture is defined by our values:
- Delight through Dedication – going above and beyond for clients.
- Lead with Trust – acting with openness and respect.
- Revel in Innovation – embracing risks and pushing boundaries.
- Celebrate as a Team – fostering inclusivity and collaboration.
- Empowered to Act Like Owners – taking accountability and driving outcomes.
Our Commitment to Diversity, Equity & Inclusion
We’re building a workplace that works for everyone. We know that teams thrive when they bring together different voices, backgrounds, and perspectives, so we’re actively working to make sure everyone feels seen, heard, and valued. Whether it’s how we hire, grow talent, or shape our culture, inclusion is at the heart of what we do. If you’re passionate, curious, and ready to make an impact, you belong here.
- Location:
- London
- Job Type:
- FullTime
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