DZDeividas Zienius

// 00 Deividas Zienius - Web developer Morley, Leeds Built on fundamentals. Sharpened with AI.

7+ years delivering fast, high-impact web experiences and digital campaigns for global B2B brands - from concept to launch.

7+ yearsB2B agency production
BSc Web DevelopmentManchester Metropolitan
50+ Pages · 100+ emailsShipped
OracleMetaFujifilmColt TechnologyStibo SystemsNICEBrightDXC TechnologyCognizantTruataThree IrelandNeopost

// 01 Selected work (via MOI Global)

A·01Stibo Systems

PX Data Cloud - campaign microsite

Horizontally-scrolling campaign page for Stibo Systems, built as a pinned single-track narrative rather than a stack of sections: an autoplaying intro video hands off into a scroll-scrubbed story of stat counters, an interactive 3D bottle model and a swipeable card carousel, ending in a gated demo-request form.

Problem
Explain a data-platform product ("unify every data touchpoint") in a way that feels tangible rather than abstract, and convert into demo requests.
Stack
Bootstrap 5 + GSAP ScrollTrigger + ScrollSmoother + ScrollToPlugin + SplitText for the pinned horizontal track, Three.js + GLTFLoader/OrbitControls for a rotatable .glb bottle model.
Result
One continuous horizontal scroll - stat counters animate in, a draggable 3D product model replaces static hero imagery, and seven value-prop cards scroll as their own filmstrip - funneling into a single demo-booking CTA.

A·02MOI Global

Year of Not-so-B2B 25/26 Annual

Single-page, scroll-driven microsite presenting MOI Global's annual creative report as an interactive editorial: a video hero, an accordion menu into five themed chapters, a quote slider of industry speakers, and full interview features - all built to feed a HubSpot form gated behind a request for the physical copy.

Problem
An annual report that's usually a static PDF needed to feel like a living, scroll-worthy story - and still convert readers into physical-copy requests.
Stack
HTML/CSS/JS over Bootstrap 5. GSAP + ScrollTrigger + SplitText handle the heading reveals and background crossfades between chapters.
Result
A five-theme, single-URL narrative that reads as one continuous scroll, with lead capture built into the flow.

A·03Fujifilm

FleXOne - campaign microsite

Five-page microsite for a print subscription product, built as static HTML with a single shared stylesheet and no build step. Scroll-driven interactions carry the narrative: a support pyramid that assembles layer by layer, nine service cards that fall into a folder as you scroll past it, a cost breakdown where depth beneath the waterline drives opacity.

Problem
Template-bound campaign pages, slow to load and slower to change.
Stack
Handwritten HTML/CSS/JS, Swiper and GSAP ScrollTrigger. Every section works as a grid on desktop and a slider on mobile from the same markup.
Result
100 Lighthouse score on desktop. Thirty-plus sections across five pages sharing one stylesheet and one script.

B·01Agency internal

AI-driven marketing intelligence dashboard

Eleven-tab analytics dashboard for a global B2B agency, built as one HTML file over a serverless backend. GA4, Search Console, PageSpeed, Semrush and HubSpot in a single view, with seven scheduled n8n workflows writing AI analysis back into it: competitor keyword gaps across three markets, a whole-site content strategy review, internal linking checked against the real page copy.

Problem
Manual reporting and data aggregation across multiple platforms.
Stack
Vanilla JS and Chart.js over Netlify Functions. GA4 Data API, Search Console, PageSpeed Insights, Semrush and HubSpot. Multiple n8n workflows, ChatGPT API calls.
Result
Traffic, search, email and pipeline in one live view, plus analysis that arrives unprompted: a daily SEO audit, a monthly executive report, competitor gaps for three markets, and a whole-site content review that decides whether to improve a page, build one, or leave it alone.

B·02Multiple clients

Client insight engine

Form-triggered research pipeline that turns a list of company and people names into a shareable Google Doc with one tab per target. A ClickUp submission fans out into parallel LinkedIn scrapes and live web research, then through three chained AI agents - research, consulting formats, brand voice - before writing straight into the Docs API and emailing the requester the link.

Problem
Buyer and account research for ABM campaigns was manual and took days.
Stack
N8N Automation, ClickUp forms and webhooks, Apify LinkedIn actors (profile, posts, company detail, company posts), Tavily search, OpenAI agents.
Result
Minutes after the form is submitted, a shareable doc lands in the requester's inbox: executive summary, collection of data points, persona or company profile, presentation narrative - one tab per target, every claim sourced and grounded in scraped LinkedIn profile data and recent posts alongside live web research.
01 / 04 Scroll

// 02 Stack & tools

Core front-end

  • HTML5 & CSS
  • JavaScript
  • Tailwind / Bootstrap
  • GSAP
  • GitHub
  • Page-speed & accessibility

CMS & platforms

  • HTML microsites
  • HTML email builds
  • WordPress
  • HubSpot
  • Marketo

Automation & data

  • N8N
  • Power Automate
  • API integrations
  • Custom scrapers
  • Marketing automation
  • Apify

AI & search

  • Claude Code / Codex
  • SEO & GEO/AEO
  • GA4, GSC
  • Semrush, OtterlyAI

// 03 How I work

/* 01 */

The real foundation

- Content/strategy: the page's actual job - lead-gen, portfolio, e-commerce, blog. Each with completely different priorities baked into every later decision.

- Audience: who's arriving, what do they already know, what do they want?


The fastest, best-designed page is still ineffective if it's solving the wrong problem for the wrong person.

/* 02 */

Fundamentals first: SEO + performance

- Fast page: optimized images (WebP/AVIF), minimal JS blocking, lazy loading, good Core Web Vitals (LCP, CLS, INP).

- Good SEO: semantic HTML, proper heading hierarchy, meta tags, structured data, clean URLs.


Nothing else matters if nobody finds the site or leaves before it loads.

/* 03 */

Good design - UX and UI

- UX: clear navigation, logical flow, obvious CTAs, accessibility (contrast, keyboard nav, screen readers.)

- UI: visual hierarchy, consistent spacing/typography, a design system instead of one-off styling.


This is where trust gets built - a clean, coherent interface signals credibility before a single word is read.

/* 04 */

The fancy stuff: interactive, animations, "the cool"

- Micro-interactions: scroll effects, hover states, subtle motion.

- Enhance, don't distract: a parallax effect that tanks performance or confuses navigation contradicts step 2 and 3.


It's what makes a good site memorable, but it can't compensate for a slow or confusing one.

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// 04 About & experience

Deividas Zienius, web developer

From the last generation trained to code without AI - fluent in what came after.

I learned this job the slow way: a web development degree at Manchester Metropolitan with UX design modules alongside the code, then straight into agency life in 2019. No autocomplete finishing my functions - just fundamentals, documentation, and the kind of deadlines that teach you fast.

Then AI changed the job, and I let it. Adopting Claude Code and Codex made me faster at the parts that were always mechanical, and more valuable at the parts that never were: architecture, judgement, and knowing when the generated answer is quietly wrong. That's the difference between a developer and a vibe coder.

Today I sit between build and strategy at MOI Global - shipping front-end for brands like Meta, Oracle, NICE, Stibo Systems, Fujifilm etc. while building the automation and research tooling that feeds the work upstream.

Mid-Weight Developer · MOI Global

Landing pages, microsites and email across the client portfolio. Introduced AI coding tools into daily workflow and built N8N data pipelines feeding ABM strategy.

Creative Developer · MOI Global

Built and maintained landing pages, websites, microsites and newsletters in HubSpot and WordPress. Introduced GSAP-driven interaction to campaign work.

Junior Creative Developer · Alias Partners

First agency role, Manchester. Marketing microsites via HubSpot, Marketo, WordPress and vanilla code for clients including Three Ireland and DXC Technology.

BSc Web DevelopmentManchester Metropolitan · 2:1 · 2014–2018
A-LevelsPsychology, Law, Business · 2012–2014

// 05 Contact

Morley, Leeds · Remote