Skip to content
View rosyatrandom's full-sized avatar

Block or report rosyatrandom

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
rosyatrandom/README.md

Michael Luder-Rosefield

Senior Front-End Specialist | Hokkaido, Japan

EmailLinkedInGitHub


About

Senior front-end engineer with 10+ years of experience and a Mathematical Logic background. Deep specialization in Vue.js & TypeScript, with broad ecosystem knowledge and practical full-stack capabilities. Committed to reducing technical debt, fostering code quality, and collaborative problem-solving. Enthusiastic adopter of AI tools—using them to amplify productivity without compromising critical thinking or craftsmanship.


Technical Skills

Core Stack

TypeScript • JavaScript • Vue 3 • React • HTML • CSS • SCSS • Node/Express

Frontend Frameworks & Libraries

Next • Nuxt • Svelte • Solid • Qwik • HTMX • Blazor • Lit • Web Components • Knockout • Backbone • Marionette • AngularJS

Styling & UI

Tailwind • Less • Bootstrap

Testing & Quality

Vitest • Vue Test Utils • Jest • Cypress • Playwright • TDD/BDD

API & Data

REST • GraphQL • tRPC • D3

Backend (Secondary)

C# • Django • Ruby on Rails • Perl

Languages & Type Systems

Mathematical interests and ongoing exploration
Rust • Haskell • OCaml • Elm • Scala • F# • Fable • Gleam • Elixir • Erlang • Go • Ruby • Python • SQL • WebAssembly

DevOps & Tools

Docker • Git • Kubernetes • Jenkins • Postman • JIRA

Concepts

Browser APIs • Containerization • Cloud Services • Systems Design • Agile • SOAP


Experience

Senior Front-End Developer @ Peatix

Hokkaido, Japan | Sept 2025 – June 2026

Modernized legacy systems and mentored the team on Vue.js best practices while reducing technical debt and improving reliability. Architected and executed the modernization of legacy search pages, significantly reducing bug rates and enhancing system reliability. Designed and delivered complex UI features to drive user engagement and improve core user experience. Championed best practices and code quality, providing technical mentorship to elevate team capabilities. Strategically prioritized and remediated critical technical debt to ensure platform stability and long-term maintainability.

Stack: Vue 3 • TypeScript • Perl • Sass


Senior Developer @ Bliss Systems

Wetherby, UK | March 2023 – August 2024

Led front-end delivery for multiple .NET projects, orchestrating comprehensive UX redesigns and ensuring high client satisfaction. Spearheaded the development of multiple high-performance projects using advanced .NET front-end technologies. Orchestrated comprehensive website redesigns to modernize UX and workflows, ensuring seamless continuity of legacy functionality. Partnered closely with clients and product owners to translate business requirements into high-satisfaction technical solutions.

Stack: .NET • JavaScript • jQuery • Blazor • WebAssembly


Front-End Engineer @ Pendo

Sheffield, UK | June 2019 – February 2023

Served as the Vue.js subject matter expert for the "Feedback" product, driving migrations from AngularJS and integrating with Ruby on Rails. Served as the primary authority on Vue.js integration for the "Feedback" product suite (formerly Receptive). Directed the progressive migration of legacy AngularJS components to Vue 2 and modern ES2015 standards. Architected and built the "Roadmaps" feature for Feedback, subsequently porting core logic to the Pendo Engage stack. Integrated deeply with Ruby on Rails backends, managing complex data queries and database migrations to support frontend requirements.

Stack: Vue • AngularJS • Ruby on Rails


Software Developer @ Tribal Group

Sheffield, UK | October 2016 – August 2018

Delivered full-stack features and integrated Python data analysis modules for the Student Insight platform. Delivered end-to-end features spanning both frontend interfaces and backend services. Engineered seamless interactions between core systems by integrating specialized Python data analysis modules.

Stack: Backbone • Marionette • Node • Python


C# Developer @ G2G3 Digital

Sheffield, UK | January 2016 – October 2016

Built robust front-end and back-end components for construction and insurance clients, including complex API integrations. Built robust frontend and backend components for Constructionline, developing complex third-party API integrations. Delivered critical feature requests for Direct Line Group, involving intricate database modifications and .NET development.

Stack: AngularJS • Node • .NET


Software Developer @ GWD Media

Sheffield, UK | October 2015 – December 2015

Developed responsive web applications and touchscreen kiosk experiences within a fast-paced agile team.

Stack: WPF.NET • Prism • Python • Django


Software Developer @ ITC UK

Manchester, UK | October 2014 – September 2015

Designed and built modern website solutions to replace and outperform legacy systems for the online gaming sector.

Stack: ASP.NET • Knockout


Trainee Developer @ Peninsula Business Services

Manchester, UK | May 2013 – September 2014

Diagnosed and resolved live incidents while managing feature requests within a fast-paced Agile support cycle.

Stack: .NET • jQuery


Education

MSc Mathematical Logic — University of Manchester (2005)

BSc Mathematics — University of Sheffield (2000)

Popular repositories Loading

  1. ruby-code-line-counter ruby-code-line-counter Public

    Ruby

  2. rosyatrandom rosyatrandom Public

    Config files for my GitHub profile.

  3. test test Public

    Vue

  4. harrods-hamper harrods-hamper Public

    Hankering for a hamper...?

    Vue

  5. roc roc Public

    Forked from roc-lang/roc

    A fast, friendly, functional language.

    Rust