MLW LogoMost Loved Workplace® Certified Job

Senior Back End Engineer - Contract

MLW LogoMost Loved Workplace® Certified Job
92% of candidates apply because they are a Most Loved Workplace®
London Office
Engineering
FullTime

About the Role

At Flagstone Group Ltd, a Most Loved Workplace® certified employer in the Finance space, Revolutionizing savings through technology and community-driven innovation.

What is Flagstone? Flagstone is many things. An online savings platform, reinventing how individuals, businesses, and charities manage, protect, and grow their cash. A diverse group of people, bound by a collaborative spirit, and shared purpose. And lastly, a thriving, profitable business – where smart people do their best work. Each definition shares a common thread: our unique culture. It’s our pride and joy. And our competitive advantage. A feel for our culture: To revolutionise the savings market, we need to be at our best. But high performance takes more than talent – it takes a culture of kindness, respect, and growth. That’s why we’re building a diverse, inclusive community, where your voice is heard and valued. Where, with close support and room to develop, you can surpass even your own expectations. And be rewarded for it. We may not change the world, but we can change the world of financial technology. And all it takes is a winning mix of drive, talent, and empathy. Our culture celebrates all three. But enough about us. Let’s talk about you. Does this sound like you? You’re a Senior Back End Engineer, ideally with 7+ years’ experience, who’s excited to forge a new way to save. You’ll have delivered on large scale projects of work, and will be excited about producing and maintaining high quality systems, including system design and architecture. You work in partnership with relevant teams across an organisation to identify how technology can solve business challenges and will be capable of answering “how and why” technology is designed and delivered. What you’ll do: We are a Microsoft shop, so our core language is C# and our platform is entirely in the cloud on Azure where we use a variety of PaaS type services including Web Apps, Functions, Azure SQL, Cosmos, Azure Service Bus, AppInsights, APIM etc. As a Senior Back End Engineer, you will play an active role in an Agile software team, fostering best practice and automation to ensure software quality. As a subject matter expert in your domain, and through working collaboratively, you will get to work on new features and deliver a high quality, resilient product. You will always look to help improve the software engineering processes and practices, and to influence the software architecture. What you’ll bring: Ideally over 7 years commercial development experience with C# / .Net / .Net Core A good understanding of SOLID principles, Event Driven Architecture (EDA) and Domain-Driven Design (DDD) Experience of RESTful API design Experience of Azure cloud development, and a cloud-first approach A good foundation in Test-Driven Development (TDD) methodologies, demonstrating proficiency in writing and maintaining test cases using one or more of the following libraries, or similar: NUnit, Microsoft Test Framework and Selenium Emotional intelligence. You actively listen and provide thoughtful solutions Proactivity and the ability to demonstrate initiative positively and collaboratively Excellent verbal and written communication, with the ability to communicate technical information to both technical and non-technical stakeholders Ability and enthusiasm to coach and guide junior engineers All are welcome At Flagstone, we’re assembling a diverse team that defies our industry’s norms. Think this role could suit you? We encourage you to apply, no matter your background.

Want to learn more about what it's like to work at Flagstone Group Ltd? View our full profile.

MLW Logo

Why This Is a Most Loved Workplace® Certified Job

What It's Like to Work Here

Users Collaborative Problem-Solving
Heart Genuine Care for People
Lightbulb Innovation-Driven Mindset
Zap Pace & Growth Energy
TrendingUp Transparency & Trust
Target Client-Centric Focus
Certified for: Most Loved Workplace Most Loved Workplaces® 2026, Most Loved Workplace Most Loved Workplaces® 2023, Most Loved Workplace Most Loved Workplaces® 2021

Frequently Asked Questions About Working at Flagstone Group Ltd

Common questions candidates ask about this role and Flagstone Group Ltd's workplace

Flagstone Group Ltd has been chosen as a 2023 Top 100 Most Loved Workplace® in Newsweek. Most Loved Workplaces® place love at center of business strategy.

Please review the specific job listing or contact Flagstone Group Ltd's recruiting team for details on remote or hybrid work options for this role.

Salary information may vary by role and location. Please check the specific job listing or discuss compensation during the interview process.

Flagstone Group Ltd is an established organization in its industry. The company is a certified Most Loved Workplace®, highlighting a strong, positive culture and committed workforce.

Key benefit categories include: Financial Wellness, Work-Life Balance & Flexibility, Health & Wellbeing, Professional Development. You can view more details on their CertCheck profile.

The day-to-day environment is guided by core values such as Collaborative Problem-Solving and Genuine Care for People and Innovation-Driven Mindset.

The company has committed to inclusive practices including: Prioritize Mental Health & Wellbeing and Foster Genuine Community & Belonging.

They have earned Most Loved Workplace® certifications including: Most Loved Workplace Most Loved Workplaces® 2026 and Most Loved Workplace Most Loved Workplaces® 2023.

Flagstone Group Ltd currently has 22 open positions. They are hiring across departments like Relationships & New Business, Engineering, Product . You can view all current openings at certcheck.mostlovedworkplace.com/companies/flagstone-group-ltd/jobs.

The interview process typically involves an initial recruiter screen followed by team interviews. Please contact Flagstone Group Ltd's recruiting team for specific details on this role's process.

Apply for Senior Back End Engineer - Contract

Submit your application directly to the Flagstone Group Ltd team. Let them know why you'd be a great addition to their loved place to work.

Most Loved Workplace® Logo
Powered by Most Loved Workplace®

The global standard for company culture certification and employer of choice visibility.

Learn more about Most Loved Workplace®