Full Stack .NET Developer

Jason Summers

Building Secure, Scalable Solutions

Specialised in Full Stack .NET development, DevSecOps practices, and Application Security. I design and build robust applications with security at their core, implementing CI/CD pipelines and modern cloud architectures.

Technologies & Skills

A comprehensive toolkit spanning full stack development, security practices, and modern DevOps workflows

.NET Development

C# ASP.NET Core Entity Framework RabbitMQ SignalR LINQ .NET 3.1 to 10 Minimal APIs Razor Pages Elastic

Frontend

React TypeScript JavaScript HTML/CSS Tailwind CSS Bootstrap Telerik KnockoutJS Blazor htmx

Database

SQL Server PostgreSQL MongoDB Redis Azure Cosmos DB MySQL / MariaDB Entity Framework Core

DevSecOps

Git GitHub GitHub Actions Jenkins Docker Kubernetes Terraform SonarQube OWASP ZAP

Application Security

Identity Server Secure Coding Dependency Management OWASP Top 10 JWT/OAuth Threat Modeling

Cloud & Infrastructure

Azure Azure Monitor Docker Kubernetes Elk Stack Grafana Windows & Linux Server Administration

Professional Experience

Building secure, scalable solutions across diverse industries and technologies

Principal .NET Developer & DevSecOps Engineer

UK Civil Service
2024 - Present

Authored Secure Coding Guidelines for department. Developed Organisational Blueprint for AI Augmentation. Implemented comprehensive DevSecOps pipeline increasing visibility of vulnerabilities.

  • ▸ Lead development of First-of-Type On-Premise LLM-Augmented Application
  • ▸ Increased visibility of security vulnerabilities through SAST and SCA
  • ▸ Implemented CI/CD pipeline using GitOps for automated deployments
  • ▸ Mentored several junior developers in secure coding practices

Senior Full Stack .NET Developer

UK Civil Service
2022 - 2024

Developed enterprise web applications using ASP.NET Core and React. Integrated OWASP security guidelines into development lifecycle. Managed On-Premise infrastructure and deployment pipelines.

  • ▸ Architected migration from On-Premise to Cloud-Native solutions
  • ▸ Implemented cross-boundary authentication using OAuth2 and SAML
  • ▸ Reduced deployment time by 60% through automation
  • ▸ Implemented data auditing and compliance features

Mid-Level Full Stack .NET Developer

UK Civil Service
2020 - 2022

Contributed to full stack development using C#, ASP.NET Core & MVC, React and SQL Server. Participated in code reviews and learned security best practices. Assisted in DevOps automation.

  • ▸ Participated in the development and maintenance of internal web applications
  • ▸ Demonstrated K8S On-Premise as a HA proof-of-concept
  • ▸ Implemented On-Premise CI/CD pipelines using Jenkins and SonarQube
  • ▸ Upgraded legacy applications to modern .NET standards

Various Project Management Roles

UK Civil Service
2012 - 2020

Held various project management and coordination roles across multiple departments. Owned and delivered a portfolio of small projects and supported large capital investments.

  • ▸ Delivered several novel small projects for niche customer groups
  • ▸ Established strong Project Controls foundation for new capital investment projects
  • ▸ Organisationally recognised for leadership of Project Controls Community
  • ▸ Developed ancillary skills in: Procurement; Schedule Management; Risk Management; Earned Value Management (EVM); Requirements Management; and Cost Control

Junior / Mid-Level Full Stack .NET Developer

UK Civil Service
2008 - 2012

Started career as a junior developer, progressively taking on more complex tasks. Gained experience in full stack development and basic DevOps practices.

  • ▸ Developed and maintained internal web applications using ASP.NET and SQL Server
  • ▸ Replatformed ASP 3.0 VBScript applications to ASP.NET 3.5
  • ▸ Assisted in the implementation of early DevOps practices within the team
  • ▸ Gained foundational knowledge in secure coding and application security

Featured Projects

Secure, scalable solutions spanning enterprise platforms, DevSecOps automation, and cloud infrastructure

On-Premise to Cloud Migration

Develop architecture and refactor legacy on-premise applications to cloud-native solutions using Azure services. Integrate with Platform team to derive maximum benefit from shared services.

C# .NET 8 React Azure Docker Azure App Service Azure Managed SQL Terraform
Framework to Core Migration Automated compliance Real Time Monitoring

DevSecOps Pipeline Automation

End-to-end CI/CD pipeline with integrated security scanning at every stage. Includes SAST, DAST, and dependency scanning using GitHub Actions.

GitHub Actions Docker SonarQube OWASP ZAP PowerShell
1-click deployments 95% automation Sub-10min builds

Cross-Domain SSSO Solution

Used Identity Server to implement secure single sign-on across multiple web applications in different security domains. Features include OAuth2 authentication, role-based access control, and token management.

ASP.NET Core Identity Server C# Razor Pages JWT OAuth SAML
Secure Authentication Secure Coding Zero vulnerabilities

AI-Augmented Stock Forecasting

Architect and Lead Developer for an AI-augmented stock market forecasting platform using .NET and React. Integrated On-Premise hosted LLM services to provide natural language insights and predictions.

C# ASP.NET Core SQL Server React Telerik Ollama
LLM Jailbreak Prevention Data Science Integration On-Premise LLM Deployment

Least Privilege Cloud Infrastructure

Facilitated the implementation of PIM and reduction in user privileges by introducing GitOps based deployments and local development environments using containers.

Azure Azure Policy Docker GitHub Actions
Azure Managed Identities Just-in-Time access GitOps Deployments

Desk and Room Booking System

Developed a full stack desk and room booking system for hybrid working environments. Features include real-time availability, booking management, and admin reporting.

C# ASP.NET Core SQL Server SPROCs React RabbitMQ Liquid Templates
Micro Services User Concurrency Track-and-Trace