Developed bicycle sharing system kiosk platform for multiple large scale deployments in large cities such as Barcelona, Buenos Aires and Monaco.

- Developed high performance Python and Node.js applications that run on resource limited ARM based system (Beaglebone Black).
- Augmented existing software system to support a variety of new hardware components such as solar panel powering, GPS tracking, Internet of Things (IoT) devices, battery charging systems and contactless/near field communication (NFC) card readers. 
- Improved existing system quality through increased unit test coverage and assiduous code reviews.
- Improved development infrastructure by moving part of the build system to Docker.

Software Engineering Contractor

Worked within a large team as a software engineering architect building the leading classroom cloud solution used by millions of students and teachers.

- Developed custom identity management solution using the Ping Identity Platform.  The solution had to consolidate different pre existing login systems across multiple technologies and hosting environments while remaining user friendly and highly secure. Key technologies: OAuth 2.0, OpenIdConnect, SAML, LDAP, Google Sign-In, Azure AD, Microsoft Active Directory, Kafka.
- Developed multiple web apps using node.js, TypeScript, Docker, Kubernetes, AWS and Azure.
- Trained and mentored other teams and developers on subjects such as web security, OAuth 2.0, Scrum and software design patterns.
- Assisted other teams in implementing SSO for products built in Java, Ruby, Node.js and .Net.


Software Engineering Architect

Built innovative web & mobile products in the education sector using the .Net framework.
  + Designed and developed a mobile responsive custom forms platform using .Net MVC, Apache CouchDB (NoSQL), backbone.js (SPA) and bootstrap as part of a very successful online student registration product for school districts.
  + Designed  and  developed  a  new  leading  edge  outcomes  based  assessment  tool  to replace traditional grading systems using .Net MVC and Domain Driven Design.
  + Designed and developed a technology platform that integrates multiple SRB products (Java, .Net) into a unified mobile optimized user experience using RESTful APIs and OpenId.

- Managed an agile team of 4-5 developers responsible for developing and supporting multiple products used  by tens of thousands of teachers, parents, students and school administrators.
- Supported dozens of client installations and SaaS.
- Migrated team process from traditional project management to Agile/Scrum and acted as product owner for multiple products.  Also participated in the development of the company’s strategic plan and roadmap.
- Supported the sales organization by participating in demonstrations at customer sites.


Software Developer, Team Leader, Development Manager

- Developed  integration software  for optical  network  management  systems  compliant  with  TMF814  standard using Java SE.
Worked within a small consulting team using Agile development principles.
- Supported carrier class customers in the deployment of network management products and solutions.
- Wrote technical documentation and trained new employees and customer support staff.
- Worked with Nortel optical and data hardware. 


Software Developer, Systems Integration Engineer Intern

I've built dozens of web applications and web services some of which are used by millions of users for business critical tools.  I've also used in on embedded Linux hardware.  

It's my method of choice for deploying web apps.  I've used it on many projects and within multiple ecosystems such as Kubernetes and Amazon ECS.

I've used Python both as a system scripting tool and to build applications.  One of these was used for wireless communication with GPS units on shared bicycle systems.  

The web is my platform of choice.  I've build dozens of web sites and web apps using many different systems. I believe it's the future of software and therefore keep up to date as it evolves.

I've used OAuth2 to create both relying parties and identity providers.  I've used with within OpenId Connect for SSO and on its own for API access delegation using multiple flows and token types.

From the Web to Logic level voltages, I enjoy it all!

Mark Carrier

A personal website build as a showcase of my skills.   View it live at https://markcarrier.info.

markcarrier.info

A game for learning the Turkish language.

Turkish Pixels

A smart photo frame app for the Raspberry Pi that provides personal and shared photos at high resolution.  The frame uses a passive infrared sensor to only show pictures when someone is in the room thereby saving power and bandwidth.

Pickr: a smart Raspberry Pi photo frame

The Unified Classroom is the largest platform of its type within the public education sector.  Its identity management system must handle authentication from millions of students, parents, teachers and administrators from thousands of different organizations all within different environments.

Unified Classroom Identity Management Platform

A platform that allows school districts to accept online student registration according to their custom requirements.  Registration forms and workflows can be customized without losing access to backend integrations.  The system allows a great level of interactivity between administrative staff and parents by allowing users to re-visit applications as many time as needed.

Personal details

Mark C.

Summary

Technical skills

Work Experience

Personal Projects