Lead .NET Engineer (Multi-Stack Oversight)

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. 

Benefits

Annual Leave

• 22 days per calendar year (and all local bank holidays)
• An additional day off for your birthday

Wellness and Care Leave

• Up to 5 days for self-care or wellness

Volunteer Day

• 1 day off to support a charity of your choice

Share With Scheme

• Eligible employees receive a share in a qualifying event

Therapy Sessions

• 50% contribution towards therapy sessions, up to BGN 90 per session

Lunch & Learns

• Events held throughout the year with educational or informative topics

Charity Matching Days

• Company matches charity sponsorships up to 3500 BGN

Hybrid Working

• 3 days in the office, 2 days working from home

Multisport

• 50% contribution from the employer, 50% from employee

State Benefits

• Pension & health provision
• Family-friendly policy

Office Facilities

• Contemporary office space
• Free Onsite gym
• Address: 51, "Cherni vrah" Blvd, 1407 Sofia, WorkBetter Coworking space

Employee Assistance Programme (EAP)

• 24-hour confidential health assistance via TelusHealth, including:
• Counselling support
• Financial wellbeing
• Bereavement support
• Legal information
• Medical information

Refer a Friend

• BGN 1,200 reward for successful referral

Hardship Fund

• Financial assistance repayable with low interest over 3, 6, or 12 months

Learn With Us

• Access to a learning platform with over 80,000 free courses