JJ Available for opportunities
E-commerce specialist

Justas Jankauskas

E-commerce · Marketplace · Product · AI

E-commerce specialist with 7+ years of hands-on marketplace experience, mostly on Etsy: product research, listing optimization, pricing, orders and customer experience. I use AI tools and automation to work faster, and I'm looking to bring this experience to an e-commerce team.

Portrait of Justas Jankauskas
7+Years
experience
3,000+Product listings created and optimized
16,000+Customer orders managed
EtsyShops built and managed from scratch
Email me LinkedIn ↗ Klaipėda, Lithuania
Selected work
01

SetMock

Portfolio project · SaaS tool

Designed and built a web tool for Etsy and print-on-demand sellers that places one design onto many mockup templates at once, so a full set of listing images takes seconds instead of an afternoon in Photoshop.

SaaSE-commerceUI/UXProduct Design
Setmock homepage: Set the placement once. Every design lands there.setmock.com ↗
02

NutraValid

Portfolio project · Product concept & Shopify store

Created the concept for a supplement brand: product idea, positioning, brand name and packaging design. Prepared it for the German market with German-language packaging and third-party lab testing, then built and designed its Shopify store, including a custom product page with animated sections.

Product ConceptBrandingPackagingShopifyGerman MarketUI/UX
NutraValid store homepage with the All-in-1 supplement bottlenutravalid.com ↗
ExperienceOct 2018 — Present

E-commerce & Etsy Marketplace Manager

Hands-on experience building and managing Etsy shops from scratch, alongside Shopify stores and other marketplaces.

  • Built and grew Etsy shops from scratch: niche research, branding, listings, pricing and customer service
  • Created and optimized 3,000+ product listings
  • Managed 16,000+ customer orders
  • Researched products, markets and competitors to find new opportunities
  • Spotted market trends and launched high-performing products
  • Managed product assortment, pricing and positioning
  • Optimized product titles, descriptions, keywords and visuals
  • Improved conversion and revenue through listing and pricing optimization
  • Ran day-to-day operations from product research to fulfillment and customer service
  • Sourced from suppliers in China and coordinated shipping
  • Etsy (main) · Shopify · Amazon · Printify · Printful
  • Used AI tools and automation for research, content, visual production and business workflows

Key areas

  • Etsy shop management
  • Product research & development
  • Marketplace management
  • SEO & listing optimization
  • Pricing & positioning
  • Product assortment
  • Customer behaviour & experience
  • Supplier management
  • AI & automation

Education

Marketing and AdvertisingSMK University of Applied Sciences
2017 — 2019
Front-End Development Course (Level 1)CodeAcademy
2021
Skills & tools
Platforms
  • EtsyMain marketplace
  • ShopifyStore platform
  • AmazonMarketplace
  • PrintifyPrint on demand
  • PrintfulPrint on demand
Design & AI tools
  • PhotoshopMockups & retouching
  • IllustratorVector design
  • CanvaQuick creatives
  • FigmaUI & concepts
  • ClaudeAI assistant
  • ChatGPTAI assistant
  • MidjourneyAI images
  • IdeogramAI text-in-image designs
  • Google SheetsData & pricing

Core skills

E-commerce & Marketplace ManagementProduct & Market ResearchCompetitor AnalysisProduct DevelopmentListing Optimization & SEOPricing & AssortmentCustomer Behaviour & ExperienceSupplier ManagementConversion OptimizationAI & Automation
About

What I enjoy most is research and analysis: digging into a market, finding the gaps where there is real demand but no good offer yet, and turning them into products. Most of my experience comes from Etsy, where I tested ideas, built products around what customers were actually searching for and let the numbers show what worked. I love learning new things and I'm always looking for new opportunities to grow.

Languages
Lithuanian Native
English Professional
German Basic
Contact
Phone+370 638 86475Lithuanian or English
LinkedInin/jjankauskas-justas ↗Klaipėda, Lithuania · open to remote and hybrid