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I am a Lead Full-Stack .NET Software Engineer with 10+ years of delivering web, cloud and desktop software across product and client-facing environments. I have a strong track record of MVPing ideas into production, spanning backend engineering, frontend applications, DevOps improvements, and tooling. In my current role at Landmark Systems, I help drive product delivery for KEYinfinity, a cloud-based agricultural accounting platform, from inception through release, shaping architecture, integrating frameworks, and shipping features like transaction matching, journal processing, CSV import/export tooling, and email templates. I’m comfortable across the full stack—from application architecture and data workflows to frontend UI, CI/CD pipelines and production troubleshooting. I enjoy mentoring teammates and taking technical ownership of complex features, refactoring legacy code, diagnosing framework issues, and building internal tooling to accelerate delivery. I’m open to senior or lead Full-Stack .NET roles with a focus on hands-on delivery and technical leadership.…I am a Lead Full-Stack .NET Software Engineer with 10+ years of delivering web, cloud and desktop software across product and client-facing environments. I have a strong track record of MVPing ideas into production, spanning backend engineering, frontend applications, DevOps improvements, and tooling. In my current role at Landmark Systems, I help drive product delivery for KEYinfinity, a cloud-based agricultural accounting platform, from inception through release, shaping architecture, integrating frameworks, and shipping features like transaction matching, journal processing, CSV import/export tooling, and email templates. I’m comfortable across the full stack—from application architecture and data workflows to frontend UI, CI/CD pipelines and production troubleshooting. I enjoy mentoring teammates and taking technical ownership of complex features, refactoring legacy code, diagnosing framework issues, and building internal tooling to accelerate delivery. I’m open to senior or lead Full-Stack .NET roles with a focus on hands-on delivery and technical leadership.

Stephen Osborne

Full Stack Developer, Back-End Developer, Web Developer, +2

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I am a Lead Full-Stack .NET Software Engineer with 10+ years of delivering web, cloud and desktop software across product and client-facing environments. I have a strong track record of MVPing ideas into production, spanning backend engineering, frontend applications, DevOps improvements, and tooling. In my current role at Landmark Systems, I help drive product delivery for KEYinfinity, a cloud-based agricultural accounting platform, from inception through release, shaping architecture, integrating frameworks, and shipping features like transaction matching, journal processing, CSV import/export tooling, and email templates. I’m comfortable across the full stack—from application architecture and data workflows to frontend UI, CI/CD pipelines and production troubleshooting. I enjoy mentoring teammates and taking technical ownership of complex features, refactoring legacy code, diagnosing framework issues, and building internal tooling to accelerate delivery. I’m open to senior or lead Full-Stack .NET roles with a focus on hands-on delivery and technical leadership.…I am a Lead Full-Stack .NET Software Engineer with 10+ years of delivering web, cloud and desktop software across product and client-facing environments. I have a strong track record of MVPing ideas into production, spanning backend engineering, frontend applications, DevOps improvements, and tooling. In my current role at Landmark Systems, I help drive product delivery for KEYinfinity, a cloud-based agricultural accounting platform, from inception through release, shaping architecture, integrating frameworks, and shipping features like transaction matching, journal processing, CSV import/export tooling, and email templates. I’m comfortable across the full stack—from application architecture and data workflows to frontend UI, CI/CD pipelines and production troubleshooting. I enjoy mentoring teammates and taking technical ownership of complex features, refactoring legacy code, diagnosing framework issues, and building internal tooling to accelerate delivery. I’m open to senior or lead Full-Stack .NET roles with a focus on hands-on delivery and technical leadership.

Available to hire

I am a Lead Full-Stack .NET Software Engineer with 10+ years of delivering web, cloud and desktop software across product and client-facing environments. I have a strong track record of MVPing ideas into production, spanning backend engineering, frontend applications, DevOps improvements, and tooling. In my current role at Landmark Systems, I help drive product delivery for KEYinfinity, a cloud-based agricultural accounting platform, from inception through release, shaping architecture, integrating frameworks, and shipping features like transaction matching, journal processing, CSV import/export tooling, and email templates.

I’m comfortable across the full stack—from application architecture and data workflows to frontend UI, CI/CD pipelines and production troubleshooting. I enjoy mentoring teammates and taking technical ownership of complex features, refactoring legacy code, diagnosing framework issues, and building internal tooling to accelerate delivery. I’m open to senior or lead Full-Stack .NET roles with a focus on hands-on delivery and technical leadership.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Engineer at Landmark Systems Ltd

February 1, 2023 - Present

Key engineer on the KEYinfinity cloud-based agricultural accounting platform. Contributed to product delivery, architecture-level problem solving, framework integration, frontend development, CI/CD improvements and internal tooling. Led platform from inception through release; designed two Vue frontend applications; implemented transaction matching, journal processing, CSV import/export tooling, and email templates. Refactored transaction processing to run on client-side, improved architecture, and enhanced release workflows by automating version increments. Debugged framework issues (Neos C# to TypeScript compiler precedence), contributed fixes to the shared framework, and integrated with a Dapr-based email cluster. Built internal tooling, including an Outlook signature generator and OCR proof-of-concept for invoice scanning; prototyped a customer support chatbot; supported peers through collaboration and troubleshooting.

Web Developer at Red River Software Ltd

September 1, 2021 - September 1, 2022

Supported multiple client projects, debugging and resolving issues; implemented new functionality including a client helpdesk messaging system and a system-wide notification feature. Gained commercial experience with React frontend while delivering backend functionality in ASP.NET Core.

Web Developer at Person Centred Software Ltd

February 1, 2021 - August 1, 2021

Contributed to a care software platform, delivering new functionality with emphasis on maintainability and performance. Optimised database calls and data access patterns; built reporting and charting functionality using C#, ASP.NET, SQL and JavaScript, and created API endpoints for external consumers.

Web Developer at Boxharry Ltd

March 1, 2020 - December 1, 2020

Delivered backend development for multiple websites and provided post-delivery client support. Built and maintained backend functionality, worked with Umbraco 7/8, and gained exposure to Orchard and Snapper CMS platforms.

Web Developer at Coverwise Ltd

February 1, 2018 - March 1, 2020

Drove development and support of the company website, delivering new functionality and maintenance across frontend and backend using ASP.NET and SQL Server; contributed to payment system integration.

Repair Technician / Junior Software Development Support at GB Electronics Ltd

June 1, 2012 - February 1, 2018

Started in electronics repair and production support; progressively took on database and software responsibilities, laying the groundwork for a software career. Gained early experience in database management and C# programming from 2014 onward.