Lead .NET Engineer (#1462)

Work type:
Technical Level:
Job Category:
Software Development
World leading digital health company

We are looking for a Lead .NET Engineer who can become a part of our enthusiastic team and contribute new ideas to product development. Our client is a leading digital health company delivering a range of evidence-based digital psychological therapy programs to those affected by mental health-related issues. It is a friendly, driven, and ambitious company that blends science, therapy, and creativity, and provides great variety and challenge in a collaborative environment. Reaching more people and treating more patients is central to their vision. In order to help achieve this, we need great minds with a drive to succeed and a willingness to think outside the norm and try new things.
Our team uses cutting-edge technology and data science to make best-in-class mental health treatment available to everyone, anywhere, and at times convenient to each of our patients.

Tech stack: C#, .NET Core 3.x, Functions, Azure Services, Event Grid, DevOps pipelines, MS SQL Server & CosmosDB, React

Description of the role

  • Work with Design, Product and Engineering teams to define technical solutions to product challenges in an outcome-focused approach
  • Design and document new services
  • Identify and develop system-wide improvements in security, performance and efficiency
  • Coach and mentor members of the team
  • Implement, document and improve standards and practices that drive outstanding software development across the team
  • Make tactical and strategic technical decisions
  • Take responsibility for all aspects of software engineering, from design to implementation, QA and maintenance
  • Amplify your impact by proactively sharing your knowledge and experience levelling-up others


  • Designs solutions to high complexity problems, with high-availability and high-reliability in mind
  • You have a deep understanding of the landscape of our codebases, components, and services
  • You are up to date with the landscape of technologies and techniques and able to evaluate their impact on the organization and its products and services
  • Typically at least 6 years of experience as a professional programmer in the specific domain
  • You have a mastery of your primary languages and frameworks
  • You will be the primary driver of resolving production issues, holding post-mortems, and owning long-term fixes
  • Shapes broad architecture; ships multiple large services, complex libraries or major pieces of infrastructure
  • Produces documentation to a very high standard
  • Exhibits a deep understanding of our products, how customers use them, and how they fit into the larger business
  • Takes on initiatives that address performance issues and work with the QA team on initiatives that would simplify life for our developers and contributors
  • Has a deep understanding of the importance of non-functional aspects of software engineering
  • Provides guidance to others regarding how to properly address security issues and vulnerabilities.

Approach and Impact

  • Understands the business and makes decisions based on its direction
  • Actively addresses cross-team challenges related to customers, quality and security
  • Continually works with others across the organisation to help team members grow their understanding of their team’s domain and technology stack
  • Maintains consistently high standards in technical work
  • You will own large components, systems, or projects, coordinating and communicating with teams and leads across the organisation
  • You play a key role in hiring and promoting the organisation as an employer
  • You understand and drive techniques for improving engineering productivity
  • You are actively pushing back on over-engineered solutions. Conversely, you are advocating for improving under-implemented solutions
  • You will instigate design discussions and facilitate engineering-wide learning
  • A record of creating sweeping improvements in stability, performance, and scalability across major business-critical systems
  • Able to take on complex requirements and decompose them into a proposal of small deliverables
  • Makes sound judgements about when to diverge from the immediate goal to achieve something important

Communication and Leadership

  • Communicates maturely, professionally, clearly and effectively when working with others
  • Can explain our application architecture, infrastructure, and codebase to others
  • Sought out by colleagues across the business for technical guidance
  • Sought out for technical guidance; anticipates technical issues at the product level and makes architectural and design decisions to avoid them
  • You are actively seeking out opportunities to teach and mentor fellow team members
  • You are a picture of responsibility and accountability
  • Listens and guides debates to help reach a consensus; once a decision is made, clearly communicates and backs that decision
  • Helps set and maintain professional standards for the entire organisation
  • You will represent engineering across the organisation
  • Amplifies the effectiveness of others by facilitating cross-team work
  • Leads incident resolutions
  • Makes sound decisions on appropriately facilitated & managed delegation tasks
  • Represents ieso at conferences/events



  • Considerable experience of developing stable, performant, accessible cloud-native applications
  • Significant working experience with C#, .NET and common data-stores (e.g. MS SQL, CosmosDB) 
  • Significant working experience with commercial Service-oriented architecture (SOA)
  • Practical understanding of industry standard development principles and practices (SOLID, CI/CD, unit testing, secure development (OWASP) etc.)
  • A UX design-led sympathetic approach to developing applications
  • Systems thinking
  • User or developer experience mindset (UX / DX)
  • Comfort and experience working in cross-functional teams in fast-paced environments
  • At least ten years’ experience of commercial software development
  • Willingness and ability to take on new technologies
  • Strong analytical skills and desire to write clean, testable and efficient code
  • Ability to break down complex problems into simple solutions
  • Demonstrated ability to influence technical direction through verbal and written communication skills
  • Sense of ownership, urgency and pride in your work


  • Line management experience of a small number of software engineers
  • Working experience of UK and US healthcare systems
  • Experience or knowledge of UK or US regulations in the Healthcare sector

We offer:

  • Flexible working format - remote, office-based or flexible
  • A competitive salary and good compensation package
  • Personalized career growth
  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
  • Active tech communities with regular knowledge sharing
  • Education reimbursement
  • Memorable anniversary presents
  • Corporate events and team buildings
  • Other location-specific benefits

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