Working Cross-Platform with .NET Core
Find out how to use the key features of the new .NET Core framework with the ability to run on multiple platforms.
James Ellis-Jones
Mentor
(5 reviews)
US$30.00
For every 15 mins
6
Sessions/Jobs
ABOUT ME
CTO and full stack/CMS developer on JS frameworks, Node and .Net, 22 years experience
CTO and full stack/CMS developer on JS frameworks, Node and .Net, 22 years experience
Senior full-stack engineer and architect specialising in React, TypeScript and Node.js, with extensive experience delivering complex, high-pressure products across startups, agencies and regulated environments.
Known for simplifying hard problems, shipping reliably under constraints, and bridging architecture with hands-on implementation. Regularly brought into early-stage or at-risk projects to unblock delivery, establish technical direction, and raise engineering standards.
English
London (+00:00)
Joined June 2016
EXPERTISE
8 years experience
Currently building the full stack of a project for generating interior design documents using React with Typescript and hooks. I've worke...
Currently building the full stack of a project for generating interior design documents using React with Typescript and hooks. I've worked on a new large site for a fintech using Typescript, hooks, Jest, styled components plus maintenance and enhancement across several sites. Also have built an automatic form generator using JSON-schema, Typescript and hooks. I've built a few other sites and done maintenance on other people's React work too over the past 2 years.
8 years experience
Last year I built a site for the London Stoke Exchange for certain kinds of clients to apply for listing using NodeJS/Express and Typescr...
Last year I built a site for the London Stoke Exchange for certain kinds of clients to apply for listing using NodeJS/Express and Typescript running on Amazon lambda. Currently I'm working on a reusable configurable Express/Typescript backend for in this case an interior design specification generator site.
3 years experience
I've worked with large websites and high security serverless web apps on AWS, using EC2, S3, IAM, Lambda, Cloudfront, API Gateway, Cloudw...
I've worked with large websites and high security serverless web apps on AWS, using EC2, S3, IAM, Lambda, Cloudfront, API Gateway, Cloudwatch, Route 52, SES, VPN Gateway, VPC etc.
1 year experience
I've used Angular to build a hierarchical form generator that produces a form based on a json-schema with appropriate validation, plus cr...
I've used Angular to build a hierarchical form generator that produces a form based on a json-schema with appropriate validation, plus created a tool in Angular for pricing office space.
3 years experience
I've done loads of in-depth stuff with ASP.Net Core since it came out - I've built a CMS with it, run a website on a Raspberry Pi (Linux)...
I've done loads of in-depth stuff with ASP.Net Core since it came out - I've built a CMS with it, run a website on a Raspberry Pi (Linux), created AWS Lambda Functions with it in a commercial site for a bank, and other things. I love it's speed, flexibility and versatility.
16 years experience
Used to working with designers to produce professional pixel perfect front ends. Generally understand CSS better than the front end devel...
Used to working with designers to produce professional pixel perfect front ends. Generally understand CSS better than the front end developers I've worked with. Done some interesting animation work including an scroll-animated site.
12 years experience | 1 endorsement
C# is my 'native' programming language, I've used it since .Net 1.1. I love Linq particularly as it is a productivity marvel and mixed fu...
C# is my 'native' programming language, I've used it since .Net 1.1. I love Linq particularly as it is a productivity marvel and mixed functional benefits with procedural code in an elegant way.
REVIEWS FROM CLIENTS
(5 reviews)
David Gibson
July 2016
excellent again, James is quick to grasp the requirements and just as quick with a fix. Top job, many thanks
David Gibson
July 2016
Very helpful and patience, has really good ability to think around tricky issues. top job!
David Gibson
June 2016
Very helpful and gave me something i could use. Top job.
Adam Ford
June 2016
James is extremely helpful and has an in-depth knowledge of entity framework and MVC. Very fast at explaining what you don't understand and efficient!
David Gibson
June 2016
Excellent, pleasure to deal, he was patient as i am a novice, which is important for my confidence and he dealt with the issue swiftly and efficiently. top job!
SOCIAL PRESENCE
EMPLOYMENTS
CTO / Co-founder
Atelyr
2024-02-01-2025-12-01
CTO of an early-stage startup building a professional interior design platform combining high-end real-time 3D visual...
CTO of an early-stage startup building a professional interior design platform combining high-end real-time 3D visualisation with product catalogues and specification tools.
- Designed and built a React + Three.js front end with a novel 3D UI
- Built headless Three.js testing framework
- Implemented AI-assisted search and content workflows
- Python Blender server with WebRTC streaming
- Heavy use of AI tooling to accelerate delivery under tight constraints
- Managed and mentored a part-time developer
Python
Three.js
TypeScript
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Python
Three.js
TypeScript
React
Deno
AWS
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Head of Front End
Aragon
2022-11-01-2024-02-01
Led a team of 6 engineers building the new Aragon App.
- Key contributor to successful product launch <l...
Led a team of 6 engineers building the new Aragon App.
- Key contributor to successful product launch
- Introduced testing, QA processes, and production stability
- Led transition from active development to long-term maintenance
- Core contributor to modular frontend architecture strategy
TypeScript
React
Web3
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TypeScript
React
Web3
Tailwind css
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CTO / Co-Founder
Restspace
2022-05-01-2022-11-01
Designed and prototyped a high-productivity web framework focused on rapid API and service integration.
- Fr...
Designed and prototyped a high-productivity web framework focused on rapid API and service integration.
- Framework design emphasising reuse and composition
- Prototyping, pitching, and pre-launch work
- Strong focus on developer experience and abstraction
TypeScript
React
Svelte
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TypeScript
React
Svelte
Deno
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