At a Glance
- Tasks: Lead innovative AI development and drive best practices in software engineering.
- Company: Established UK insurance broker with a focus on modern engineering and growth.
- Benefits: Competitive salary, career progression, and a collaborative work environment.
- Other info: Mentorship opportunities and significant influence over engineering standards.
- Why this job: Shape the future of engineering while working with cutting-edge technology and talented teams.
- Qualifications: Strong experience in C#, .NET, TDD, and cloud services like AWS.
The predicted salary is between 63000 - 77000 £ per year.
Title
Senior . NET Software Engineer (Agentic AI / . NET)
Location
London
The Opportunity
I'm currently working with an established UK insurance broker that has been at the forefront of its market for over 17 years.
Following recent investment to support expansion into new insurance markets, they're looking to hire a
Senior . NET Software Engineer to play a key role in shaping the future of their engineering function.
This is far more than a traditional senior developer position. As one of the company's senior engineers, you'll help drive the adoption of test-driven development (TDD) across the engineering team while leading the implementation of an innovative agentic AI development workflow .
The vision is to combine robust testing, clear engineering standards and AI-powered coding agents to improve software quality, accelerate delivery and modernise the development lifecycle.
Working closely with teams across both the UK and India, you'll remain hands-on with development while influencing engineering best practices, mentoring colleagues and helping build the technical foundations that will support the company's continued growth.
This is an excellent opportunity for someone who is passionate about software craftsmanship, modern engineering practices, AI-assisted development and building high-quality, scalable applications within a collaborative environment.
Key Responsibilities
- Drive the adoption of test-driven development (TDD) and promote best practices for unit and integration testing across the engineering team.
- Lead the implementation of an agentic AI development workflow, integrating AI coding agents into existing development and CI/CD processes.
- Design, develop and maintain scalable . NET applications, APIs and background services.
- Analyse existing applications to identify technical improvements, reduce risk and enhance maintainability.
- Collaborate with technical and business stakeholders to translate requirements into robust technical solutions.
- Develop and deploy cloud-based solutions within AWS, following best practices for security, scalability and reliability.
- Write clean, maintainable and well-documented code with comprehensive automated test coverage.
- Maintain and improve monitoring, alerting and production support capabilities.
- Mentor developers and champion engineering excellence across the wider development team.
- Contribute to the ongoing evolution of software architecture, development standards and delivery processes.
- Strong commercial experience developing applications using
C# and . NET .
- Experience building Web APIs, background services and enterprise applications.
- Excellent understanding of
Test-Driven Development (TDD) with strong unit and integration testing experience using frameworks such as x Unit .
- Strong SQL experience, including
- SQL Server (T-SQL) and
Postgre SQL .
- Experience working with
AWS cloud services including EC2, RDS, Lambda and S3.
- Knowledge of CI/CD pipelines and deployment tools such as
- Team City ,
Octopus Deploy , or similar.
- Experience using
Git Hub , including pull requests, branching strategies and code reviews.
- Solid understanding of software engineering principles including
SOLID , Clean Architecture and layered application design.
- Hands-on experience working with AI coding agents and AI-assisted software development workflows.
- Strong communication skills with the ability to mentor colleagues and influence engineering best practices.
- Experience implementing agentic AI development workflows.
- Knowledge of Docker, ECS or Kubernetes.
- Experience with microservices and event-driven architectures.
- Familiarity with monitoring and observability tools such as Cloud Watch, ELK or Grafana.
- Experience working within Agile development environments.
- Previous experience mentoring developers and driving engineering improvements.
- Office based in South London
- Opportunity to shape engineering standards and technical direction within a growing business.
- Significant influence over the company's engineering practices and future technology roadmap.
- Collaborative environment working alongside experienced teams in both the UK and India.
- Excellent opportunity for long-term career progression within a well-established business entering an exciting new phase of growth.
- #J-18808-Ljbffr
Senior Software Engineer employer: Oscar
Oscar is an exceptional employer, offering a dynamic work environment in Surrey where innovation meets collaboration. With a strong focus on employee growth, you will have access to professional development opportunities and a generous benefits package, including 25 days of leave and a pension scheme, all while enjoying the flexibility of a hybrid working model.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Oscar or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Oscar.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Oscar.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Oscar that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Software Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Oscar.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Oscar and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Oscar
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Oscar uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
