Senior .NET Developer

Sorry, this job was removed at 04:40 p.m. (UTC) on Friday, Sep 25, 2026
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4 Locations
Hybrid
Senior level
Artificial Intelligence • Information Technology • Marketing Tech • Software
The Role
Designs, builds, and delivers scalable backend systems and features using C# and .NET. Responsibilities include architectural delivery, independent technical problem-solving, code reviews, application security, testing, client communication, and accountable delivery. The role requires experience with legacy and modern .NET, Web Forms, MVC, SQL, stored procedures, Dapper, JavaScript, Azure, Durable Functions, Event Sourcing, and Docker. This is an initial six-month Inside IR35 contract with hybrid or remote options.
Summary Generated by Built In

Waracle are looking for an experienced Senior .NET Developer to join our world-class digital technology consultancy. We work with ambitious clients to help them solve their biggest business and customer challenges, creating intelligent digital products and delivering business-critical IT transformation projects.

As a Senior .NET Developer, you will operate at an impactful level to design, build, and deliver robust backend features. We are looking for a pragmatic self-starter who is skilled at problem-solving, confident in taking ownership, and capable of figuring things out independently to deliver value quickly.

This position is an Inside IR35 Contract, initially for 6 months and is available on a Hybrid or Remote basis from Dundee, Glasgow, Edinburgh, or London.

Key Responsibilities
  • Architectural Delivery: Design and deliver end-to-end backend subsystems and features, ensuring code is modular, maintainable, and built to scale.

  • Problem Solving & Execution: Hit the ground running as a self-starter to analyse, troubleshoot, and solve complex technical challenges independently.

  • Quality & Security: Champion high standards through constructive peer code reviews, establishing defensive application security measures, and implementing thorough testing strategies across unit and service levels.

  • Consulting & Communication: Translate complex technical choices into clear, accessible language for clients and stakeholders, building strong, trusting relationships.

  • Delivery Accountability: Balance speed and high-quality standards thoughtfully to ensure the successful, sustainable delivery of features within required contract timelines.

What You'll Bring
  • Deep, practical experience with C# and both older and current versions of the .NET Framework (including .NET Framework 4.8 and modern .NET).

  • Solid hands-on experience working with Web Forms as well as MVC.

  • Strong database skills using tSQL, including extensive experience writing and optimising Stored Procedures and using lightweight ORMs like Dapper.

  • Experience handling occasional frontend tasks using JavaScript.

  • Strong understanding of SOLID principles, maintainability, and industry-standard security practices.

  • Familiarity or experience with modern cloud tools and patterns, such as Azure, Durable Functions, Event Sourcing, SQL, and Docker.

What to expect from our hiring process
  1. First Hello: An informal chat with your dedicated Talent Attraction Partner to talk about Waracle, the role, the project and day rate.

  2. Craft Showcase: A focused take-home task to demonstrate craft expertise, critical thinking and your real-world expertise.

  3. Talking Impact: A collaborative deep dive into how you solve problems, work with others and your technical competencies.

Your Talent Attraction Partner will be in your corner through every step right up to your Welcome Ritual on day one.

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, gender, disability, religion/belief, sexual orientation or age.

Skills Required

  • Deep practical experience with C#
  • Experience with older and current versions of the .NET Framework, including .NET Framework 4.8 and modern .NET
  • Hands-on experience with Web Forms and MVC
  • Strong tSQL and database skills
  • Experience writing and optimizing stored procedures
  • Experience using Dapper or lightweight ORMs
  • Experience handling frontend tasks using JavaScript
  • Understanding of SOLID principles, maintainability, and industry-standard security practices
  • Familiarity or experience with Azure, Durable Functions, Event Sourcing, SQL, and Docker
  • Ability to communicate technical decisions clearly to clients and stakeholders

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The Company
London, England
140 Employees
Year Founded: 2008

What We Do

Waracle design & engineer intelligent digital products for financial services, health and energy businesses across the UK & Europe. Our team of industry-leading experts create digital products that generate vast quantities of data via user interactions, customer engagement & novel use of device sensors. The high-quality, clean data that we generate has been used to power some of the most innovative uses of machine learning and artificial intelligence in our chosen sectors. We collaborate with clients such as the NHS, Imperial College London, Virgin Money, LifeArc, Natwest, Royal London, Sainsbury's Bank, Scottish Power, Iberdrola and more. We are Waracle - Intelligent Digital Experiences. For careers visit - www.waracle.com/careers

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