Lead .NET Engineer (Multi-Stack Oversight)

With Intelligence; London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A leading data provider in London seeks a .Net Specialist to lead the development of innovative software solutions. You will guide teams, manage modernization efforts, and enhance technical capabilities using .NET technologies. Ideal candidates will have strong C# and .NET experience, and a passion for engineering excellence. The role offers a competitive salary and comprehensive benefits including hybrid working and generous leave policies.

Benefits

24 days annual leave rising to 29 days

Enhanced parental leave

Wellness Days

Flexible Fridays

Birthday day off

Employee assistance program

Breakfast provided

Qualifications

• Prior experience in a senior or lead .NET development role, preferably in a SaaS environment.
• Experience designing RESTful APIs within .NET.
• Strong communication skills for effective collaboration.

Responsibilities

• Architect, develop, and maintain complex web and backend applications across multiple product lines.
• Lead modernization efforts from legacy technologies to scalable platforms.
• Collaborate with product managers and DevOps engineers to define software requirements.

Skills

C#

.NET Framework 4.x

.NET Core 3

ASP.NET

SQL

TeamCity

IIS

AWS

Tools

Git

Octopus Deploy

Job description

About Us

With Intelligence is a leading provider of data and insights for the global asset management industry. We are scaling up our technological capabilities, harnessing the power of advanced data systems, AI, and modern cloud-based infrastructure to build a flexible, event-driven platform that supports our growing suite of digital products.

We're assembling a top-tier London-based engineering team to lead this transformation. This role offers the opportunity to be a key contributor to our technology evolution, leveraging your deep .NET experience to influence product direction, mentor teams, and ensure our systems are robust, scalable, and modern.

Role Overview

As a .Net Specialist you will be leading teams in the design, development, and implementation of software solutions using the .NET framework. You will act as a technical authority across multiple product stacks. This position requires leading architectural discussions, guiding developers, and driving the strategic evolution of legacy and modern systems. You’ll work in a collaborative, cross-functional team to modernise our applications, define best practices, and ensure reliable product delivery.

Key Responsibilities

• Architect, develop, and maintain complex web and backend applications across multiple product lines using C# and .NET Framework/Core.

• Contributing to the overall technical strategy and roadmap working across multiple squads.

• Lead modernisation efforts from legacy technologies (Web Forms, ASMX) to more scalable, maintainable platforms (.NET Core, MVC, etc.).

• Collaborate with product managers, QA, and DevOps engineers to define and implement software requirements in line with engineering goals in agile sprints.

• Guide developers through code reviews, mentoring, and architectural support.

• Implement and maintain CI/CD pipelines using TeamCity and Octopus Deploy.

• Support and optimise application deployment in IIS and AWS environments.

• Analyse SQL performance and optimise queries for production workloads.

• Stay current with emerging Microsoft technologies and recommend best-fit solutions.

• Mentoring and coaching engineers.

Core Technologies:

• Expert in C#

• Strong knowledge of .NET Framework 4.x and .NET Core 3.

• Experience with ASP.NET Web Forms, ASMX Web Services, and MVC

• Familiarity with VB.NET (for legacy systems)

Infrastructure & DevOps:

• Experience with AWS for hosting and infrastructure

• Skilled in IIS configuration and deployment

• Strong knowledge of TeamCity for CI

• Experience with Octopus Deploy

• Familiarity with Git for version control

UI & Front-End:

• Exposure to third-party .NET UI libraries (e.g., Telerik)

• Basic understanding or hands-on exposure to Angular is a plus

Database:

• Proficient in SQL Server

• Skilled in writing and optimising T-SQL queries

Desired Experience & Approach

• Prior experience in a senior or lead .NET development role, preferably within a fast-paced product or SaaS environment.

• Demonstrated ability to balance legacy maintenance with modern development practices.

• Experience designing and maintaining RESTful APIs within .NET.

• Strong communication skills with the ability to collaborate effectively across teams.

• Passion for engineering excellence and driving continuous improvement.

• Comfortable working independently and taking ownership of systems.

Why Join Us?

• Shape the future of our product stack as we transition to a decoupled, event-driven architecture.

• Be part of a mission-driven company committed to innovation, quality, and data-driven insights.

• Work with a collaborative team where your input is valued and impactful.

• 24 days annual leave rising to 29 days
• Enhanced parental leave
• Medicash (Health Cash Plans)
• Wellness Days
• Flexible Fridays (Opportunity to finish early)
• Birthday day off
• Employee assistance program
• Travel loan scheme
• Charity days
• Breakfast provided
• Social Events throughout the year
• Hybrid Working

Our Company:

With Intelligence is based at One London Wall, London EC2Y 5EA. We offer amazing benefits, free breakfast daily and drinks provided all day, every day. We actively encourage social networks that oversee activities from sports, book reading to rock climbing, that you are free to join.

As part of our company, you will enjoy the benefits of an open plan office and working with a social and energetic team. With Intelligence provides exclusive editorial, research, data and events for senior executives within the asset management industry. These include hedge funds, private credit, private equity, real estate and traditional asset management, and our editorial brands are seen as market leaders in providing asset manager sales and IR execs with the actionable information they require to help them raise and retain assets. To maintain and grow our position in the market we need to continue to hire highly motivated, thoughtful and to ensure our subscribers are getting the exclusive intelligence they need first, and most comprehensively, through our range of services. If you are interested so far in what you have read, please apply, we look forward to hearing from you.

We are an Equal Opportunity Employer. Our policy is not to discriminate against any applicant or employee based on actual or perceived race, age, sex or gender (including pregnancy), marital status, national origin, ancestry, citizenship status, mental or physical disability, religion, creed, colour, sexual orientation, gender identity or expression (including transgender status), veteran status, genetic information, or any other characteristic protected by applica