Senior .NET Engineer in London

Senior .NET Engineer in London

London Temporary 60000 - 75000 £ / year (est.) No home office possible
Whitehall Resources

At a Glance

  • Tasks: Lead critical projects, mentor engineers, and implement secure coding practices.
  • Company: Join a forward-thinking tech company in London/West Midlands.
  • Benefits: Competitive pay, flexible working, and opportunities for professional growth.
  • Other info: Exciting chance to work on innovative projects with a supportive team.
  • Why this job: Make a real impact in a dynamic environment while enhancing your skills.
  • Qualifications: .NET expertise and strong collaboration skills required.

The predicted salary is between 60000 - 75000 £ per year.

Whitehall Resources are currently looking for a Senior .NET Engineer based in London/West Midlands for an initial 6-month contract.

This position is designed to enhance our technical capabilities in support of upcoming initiatives and key project deliverables for the new financial year. The Senior Engineer will play an integral role in driving critical projects and guiding teams to deliver solutions in accordance with established engineering standards and guidelines. Additionally, this individual will be responsible for setting and maintaining system performance, reliability, and maintainability benchmarks; overseeing refactoring and modernization efforts where required; and implementing robust observability and Service Level Objectives (SLOs) for essential services. The role also involves embedding secure coding practices and collaborating closely with Architects, Principal and Staff Engineers, Information Security, Data Governance, and other stakeholders to ensure alignment with internal technology standards.

Main responsibilities:

  • Translate scope into actionable plans, estimates, and milestones; actively manage risks, dependencies, and non-functional requirements.
  • Mentor engineers (pairing, design reviews, coaching), improve team productivity, and cultivate a healthy engineering culture.
  • Work closely with Product, QA, and Platform teams to unblock delivery; maintain crisp communication to stakeholders on progress and trade-offs.
  • Embed secure coding practices (OWASP Top 10/ASVS), threat modelling, secrets management (e.g., Azure Key Vault), least privilege, and zero-trust principles.
  • Implement strong authentication/authorization (OAuth2/OIDC), TLS everywhere, and secure API contracts.
  • Partner with InfoSec and Data Governance to evidence controls, handle vulnerabilities, and pass security reviews.
  • Align to internal Tech Standards for Information Security, Data Governance, and Regulatory Compliance.
  • Define, document, and uphold standards for coding, reviews, branching, and versioning (e.g., Trunk based development or GitFlow, mandatory PR reviews, automated quality gates).
  • Drive CI/CD excellence (GitHub Actions), including build quality, unit/integration tests, static analysis, and automated deployments.
  • Establish and enforce performance, reliability, and maintainability baselines; lead refactoring and modernization where needed.
  • Implement comprehensive observability (metrics, distributed tracing—OpenTelemetry) and SLOs for critical services.

Key Skills:

  • .NET Expertise: .NET 8, C#, ASP.NET Core, RESTful APIs, background jobs, async programming, dependency injection, unit/integration testing frameworks.
  • Security Concepts: OWASP Top 10/ASVS, threat modelling, OAuth2/OIDC, TLS, input validation, secrets management, RBAC/ABAC.
  • Cloud & DevOps: Azure (App Service/AKS/Functions), IaC (Terraform/Bicep), CI/CD pipelines, containers (Docker), observability (logs/metrics/traces).
  • Architecture: DDD, modular monolith/microservices, event-driven patterns, idempotency, resiliency (circuit breakers/retries), API versioning.
  • Collaboration: Proven record of mentoring, elevating engineering standards, and delivering scoped outcomes in cross-functional teams.
  • Apply unit testing and component testing using tools like Xunit.
  • Participate in Agile/SCRUM ceremonies including sprint planning, reviews, and retrospectives.

Desirable:

  • Retail domain knowledge preferably UK retailers.
  • Practical knowledge of performance/load testing (k6/JMeter) and chaos/resiliency testing.
  • Microservice Architecture and Design principles knowledge.
  • MongoDB setup and Entity framework experience.

Senior .NET Engineer in London employer: Whitehall Resources

At Whitehall Resources, we pride ourselves on being an exceptional employer, offering a dynamic work environment in the heart of London/West Midlands. Our culture fosters collaboration and innovation, providing Senior .NET Engineers with ample opportunities for professional growth through mentorship and involvement in critical projects. With a strong focus on secure coding practices and cutting-edge technology, we empower our team to excel while ensuring a healthy work-life balance and competitive benefits.
Whitehall Resources

Contact Detail:

Whitehall Resources Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior .NET Engineer in London

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, attend meetups, and join online forums. You never know who might have the inside scoop on job openings or can refer you directly.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your projects, especially those that highlight your .NET expertise. This gives potential employers a tangible sense of what you can bring to the table.

✨Tip Number 3

Prepare for interviews by brushing up on common technical questions and coding challenges related to .NET. Practising with mock interviews can help you feel more confident and ready to impress.

✨Tip Number 4

Don’t forget to apply through our website! We’ve got loads of opportunities waiting for talented engineers like you. Plus, it’s a great way to ensure your application gets the attention it deserves.

We think you need these skills to ace Senior .NET Engineer in London

.NET Expertise
C#
ASP.NET Core
RESTful APIs
Async Programming
Dependency Injection
Unit/Integration Testing Frameworks
OWASP Top 10/ASVS
Threat Modelling
OAuth2/OIDC
Azure (App Service/AKS/Functions)
CI/CD Pipelines
Docker
Domain-Driven Design (DDD)
Microservices Architecture

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Senior .NET Engineer role. Highlight your experience with .NET 8, C#, and any relevant projects that showcase your skills in secure coding practices and cloud technologies. We want to see how you fit into our team!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about this role and how your background aligns with our needs. Mention specific projects or experiences that demonstrate your expertise in mentoring and collaboration.

Showcase Your Technical Skills: In your application, don't forget to highlight your technical skills, especially around CI/CD, Azure, and security concepts like OWASP. We love seeing candidates who can clearly articulate their technical prowess and how they’ve applied it in real-world scenarios.

Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of your application and ensures you don’t miss out on any important updates. Plus, it’s super easy!

How to prepare for a job interview at Whitehall Resources

✨Know Your .NET Inside Out

Make sure you brush up on your .NET skills, especially the latest features in .NET 8. Be ready to discuss your experience with C#, ASP.NET Core, and RESTful APIs. Prepare to showcase how you've implemented secure coding practices and CI/CD pipelines in your previous roles.

✨Showcase Your Mentoring Skills

Since mentoring is a key part of this role, think of specific examples where you've helped other engineers grow. Be prepared to discuss your approach to coaching, conducting design reviews, and fostering a positive engineering culture within your team.

✨Demonstrate Your Collaboration Experience

This position requires close collaboration with various teams. Have examples ready that illustrate how you've worked with Product, QA, and Platform teams to unblock delivery. Highlight your communication skills and how you manage stakeholder expectations.

✨Prepare for Technical Questions

Expect technical questions around security concepts like OWASP Top 10 and OAuth2/OIDC. Brush up on your knowledge of Azure services, IaC tools like Terraform, and observability practices. Being able to discuss these topics confidently will set you apart from other candidates.

Senior .NET Engineer in London
Whitehall Resources
Location: London

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