Leo Plaw
Leo Plaw

Senior Full-Stack JavaScript Developer

Actively looking · Member since 20 Jun 2026
Message
Location
Witzenhausen, Germany
Desired salary
Confidential
Work preference
Remote Only / Full Time, Part Time, Contract, Freelance
Experience level
Senior

About

Professional summary

I am a self-taught programmer and creative professional with more than two decades of experience building high-performance websites, web applications, digital products, and multimedia experiences. I bridge logic and creativity to deliver technically robust, visually effective, and maintainable solutions.

I specialize in framework-agnostic design systems, Vanilla JavaScript, Web Components, and modern full-stack development. I work confidently with Vue, Nuxt, Node.js, TypeScript, PHP, and relational databases, while maintaining a strong focus on performance, usability, and clean architecture.

I have developed and maintained projects for international organizations and brands including The British Council, Telstra, Roche, and the Australian Defence Force. My experience ranges from enterprise web portals and e-commerce platforms to multimedia training tools, interactive applications, and complex WordPress migrations.

I am currently building TradeX-Chart, an open-source, high-performance financial charting library written in Vanilla JavaScript. I designed its event-driven data architecture and native Web Component integration to support real-time data visualization with minimal overhead and broad framework compatibility.

I am known for a troubleshooting mindset and for helping projects recover when they are over budget, behind schedule, or technically difficult. I communicate clearly with both technical teams and non-technical clients, helping them understand requirements and confidently manage their own digital platforms.

My background in graphics, animation, print design, video, and early hardware-constrained programming has given me a disciplined approach to efficient code and thoughtful user experiences. I continuously learn new technologies and enjoy turning complex requirements into practical, polished products.

Skills

33 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Founder and Lead JavaScript Developer TradeX-Chart

I architected and engineered an open-source, ultra-high-performance financial charting library from the ground up using Vanilla JavaScript and native Web Components. The project was designed to eliminate framework overhead and provide fast, scalable data visualization for financial applications.

I built a low-latency, event-driven state-management architecture for intensive real-time streaming data with minimal memory consumption. I also created extensible APIs, graphical layers, event hooks, custom indicator support, responsive and touch interfaces, and framework-agnostic integration for Vue, React, Angular, and legacy stacks.

The technical proof of concept secured dedicated development funding from an early-stage startup.

Senior Full-Stack Web Developer and Creative Consultant Independent Web Development and Design Clients

I delivered custom websites, WordPress migrations, responsive front ends, back-office administration tools, e-commerce integrations, technical support, and client training for organizations and creative businesses in Europe, Australia, and the United Kingdom. Projects included Alexier.com, KathrinaSofie.de, SSRS.net.au, Galerie10.at, MoreImages.net, Body Armor, RowPerfect.co.uk, SMLXL.co.uk, and No-Straight-Lines.com.

I worked directly with non-technical clients to scope requirements, regain domain and hosting control, plan migrations, prepare proposals and costings, and enable clients to independently administer their sites. My work included PHP, MySQL, JavaScript, WordPress, Zen Cart, content management, SEO, image processing, and ongoing maintenance.

For FantasticVisions.net and Beinart.org, I created and supported content-rich artist community and e-commerce platforms, including WordPress, BuddyPress, phpBB, Zen Cart, multilingual content, interviews, photography, video documentation, and promotion.

Front-End Troubleshooter and Developer Media Catalyst

I was engaged by the Amsterdam agency to diagnose and recover front-end projects that were behind schedule and over budget. I rapidly assessed unfamiliar codebases, assets, requirements, and technical risks before providing written appraisals to project management.

I delivered front-end troubleshooting and development support for projects including Brand World, Fear Net, FOA, and OMA. The work involved both on-site and remote collaboration, rapid problem-solving, and clear communication with project teams.

Web Designer and Developer The British Council

I designed, implemented, and maintained websites and online initiatives for British Council programs across Australia and Southeast Asia. I worked on Montage World projects for Hong Kong, Indonesia, Singapore, Malaysia, Thailand, and Australia, as well as British Council Australia initiatives.

The standardized designs I developed for British Council Southeast Asia were adopted and formalized by the London head office as a documented specification. I also supported portal redesigns, newsletter signup pages, site maintenance, and client-facing web improvements.

Front-End Developer and Creative Director Nemas

I completed a six-month contract with a large Sydney web development company, delivering front-end development, Flash and Director work for web and CD-ROM products, visual design, art direction, and project documentation.

I contributed to client work for Telstra, Roche, Deans Property, and Fastnet. I was responsible for interpreting client briefs, producing designs, implementing interactive components, and taking final creative responsibility for selected deliverables.

Multimedia Designer and Lingo Developer Australian Defence Force

I completed a three-month contract producing a Macromedia Director training CD-ROM package. I designed the visual interface, screen styles, content layouts, and graphical usability approach for the training product.

I advised on script implementation, video integration, and interaction design, and created Lingo scripting to support the package.

Co-Manager and Multimedia Producer Guild Productions

I co-managed a multimedia production company, handling client acquisition, research, costings, price negotiation, subcontractor management, graphic design, animation, website development, interactive CD-ROMs, and live internet broadcasts.

I contributed to projects including the 4ZZZ FM Market Day live webcast, multimedia dance events, the Brisbane Powerhouse opening event, W@rp TV, and performance visuals for Full Fathom Five. My work combined project coordination with visual design, live video, animation, web production, and event technical support.

GUI Designer and Front-End Developer Scale Components

I designed the graphical user interface for industrial plant operators to monitor and control automated weights-and-measures systems. I implemented front-end code in Clarion and integrated the interface with C++ back-end code and programmable logic controllers.

This role required practical interface design for operational environments and close attention to system behavior, usability, and technical integration.

Art Director and Game Graphics Artist Stargunner

I worked on Stargunner, a PC game published by Apogee USA, providing artistic direction, static graphics, and animation. The work required strict management of color palettes, graphic dimensions, and memory limitations.

Working within these hardware constraints developed my long-term discipline for efficient design, optimization, and high-performance digital production.

Education

Learning history
No education data available.

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