.NET Developer - Full Stack - SRE - Financial Services

Rothstein Recruitment; Greater London; On-site; GBP 60,000 - 90,000; Full time

Job summary

Rothstein Recruitment is seeking a .NET Developer to join a financial services team in London. You will work across front and back ends, contributing to product-led features that impact customers directly.

You will collaborate with product managers, designers, and users, pursuing agile delivery, continuous learning, and robust DevOps practices to ensure reliable production systems on Azure.

Qualifications

• Experience in product-led teams delivering outcomes for real users.
• Strong customer-centric approach with user research and validation.
• Comfortable working in agile environments and measuring impact.
• Proactive about learning and sharing knowledge with the team.

Responsibilities

• Engage in the full development lifecycle, coding, peer reviews, and production releases.
• Collaborate with product managers, designers and stakeholders to solve user problems.
• Balance development and operations, improving automation and reliability.
• Design and support front and backend software across stacks.
• Contribute to CI/CD pipelines and test automation for Azure-hosted solutions.
• Deliver production-ready environments and measure impact to guide next steps.

Skills

Product mindset

Customer-centric

Agile environment

Continuous learning

Tools

GitHub Actions

Octopus Deploy

Job description

.NET Developer - Full Stack - SRE - Financial Services

Excellent opportunity opens to join a Financial Services Firm as their new .NET Developer. You will be a key part of the development lifecycle for the firm's customer-facing applications. This will be an ambitious and driven technician who is seeking the opportunity to be hands-on and extremely close to products that make an impact on customers.

Responsibilities

• Engage fully in the development lifecycle of applications and tools, contributing hands-on from coding to reviewing and releasing to production. Partner closely with product managers, designers, and stakeholders, and stay connected to real users, so that what we build genuinely solves their problems.
• Focus on outcomes, not just output. Help the team frame problems around customer and business value, validate ideas with experiments and feedback, and measure the impact of releases so we can learn quickly and continuously improve.
• Take ownership of personal learning paths, continually acquiring new skills to enhance team solutions and individual performance.
• Implement and refine DevOps practices, balancing responsibilities between development and operations, while actively reducing technical debt and enhancing the automation and reliability of applications.
• Designing, building, deploying, and supporting software across front and backend stacks
• Working closely with product managers, designers, and real users to understand problems deeply before jumping to solutions
• Configuring and maintaining automated CI/CD pipelines and test automation to facilitate a seamless route to production for Azure hosted solutions
• Developing and supporting environments up to and including production to ensure reliability and quality
• Measuring the impact of what you build, and using that insight to help decide what to do next

Qualifications & Experience

• You come from a genuine product background: you have worked in product-led teams that own outcomes for real users, and you are motivated by the value you create rather than the volume you ship.
• You are genuinely customer-centric: you seek direct contact with real users, use research, usability testing, and experiments to validate ideas, and measure success through customer outcomes such as adoption, retention, satisfaction, and task success.
• You think in terms of impact and outcomes: you are comfortable with product metrics and analytics, forming hypotheses, running experiments (for example A/B tests), and using evidence to decide what to build next.
• You collaborate naturally with product managers and designers, and you are happy getting involved in discovery and in shaping what we build, not just how we build it.
• You have developed modern component-oriented front end applications using frameworks and libraries and have a good appreciation of UX (User eXperience).
• Proficiency in a variety of development technologies, languages, design patterns, and tooling. Our current tech stack is primarily Microsoft / Azure focused; solid C# is necessary.
• Advocate of key principles such as SOLID and CLEAN code, applying to all areas of development. Keen to write code that is self-explanatory and easy to maintain.
• We use GitHub Actions and Octopus Deploy for our pipelines, but an understanding of the principles behind CI/CD is more important than the specific tooling you have used. You will have worked in an environment that deploys regularly to production.
• You have a sound grasp of modern engineering principles and prefer working in small iterations that optimise feedback. You like to validate hypotheses via experiments.
• You have an awareness of security principles and best practices to ensure secure software delivery.
• You are committed to continuous learning, staying abreast of evolving industry technologies and trends, and are keen to share and contribute to our community.
• You have extensive experience working within an agile environment; waterfall projects are a red flag to you.
• You own change all the way to production, and the idea that a different team would test your work, or that it will not rapidly ship to production, does not sit well with you.
• You enjoy working with others and contributing to technical excellence as part of an active community.