Jass SK

(Freelance Full Stack Developer | UI/UX Designer | Digital Strategist)

🎯 Versatile and results-driven freelance digital professional with 10+ years of experience across web development, mobile app development, UI/UX design, digital marketing, and SEO. Proven ability to lead full-cycle projects—from concept to launch—for clients worldwide. Adept at merging creative vision with technical execution, delivering high-impact digital solutions that drive engagement, conversions, and business growth. Specialized in working remotely, independently, and cross-functionally across time zones and tech stacks.

Languages

ENGLISH, HTML, PHP, JSON, XML, AJAX, JavaScript, MySQL, Python, jQuery, SQL, Java

About Me

  • BS in Data Science & Applications
  • Interests: The Web, Blockchain & AI

Skills

Web & App Development: HTML, PHP, JavaScript, MySQL, Python, AJAX, JSON, XML, jQuery, REST APIs
Frameworks & Libraries: React.js, Vue.js, Backbone.js, Highcharts, Kendo UI
Design & Prototyping: Photoshop, Illustrator, InDesign, Balsamiq, OmniGraffle, Dreamweaver
Marketing & Business: SEO, Content Marketing, Email Marketing, Affiliate Marketing, A/B Testing, Brand Management
CRM & Analytics Tools: HubSpot, ActiveCampaign, Google Tag Manager, Google Analytics, Yoast SEO
Payments & eCommerce: WooCommerce, Stripe, PayPal, Authorize.net
Platforms: WordPress, LMS, CMS, CRMs, cPanel, GitHub, Bitbucket
Soft Skills: Communication, Project Management, Market Segmentation, Customer Service, Team Leadership

Tools

LMS, CMS, CRMs, Google Tag Manager, Google Analytics, Photoshop, Illustrator, InDesign, Dreamweaver, After Effects, cPanel, WooCommerce, Stripe, Authorize.net, PayPal, Yoast, BuddyPress, GitHub, Bitbucket, ActiveCampaign, HubSpot, OmniGraffle, Balsamiq, Justinmind, SQL Navigator, SharePoint, WAMP

Work Experience

🔹 PHP & WordPress Developer

Clients: Flagtheory.com, bankaccounts.io, passports.io (Remote)
Duration: May 2018 – 2024 | 14 hrs/week

  • Led revamps of client websites and portals, boosting user experience and SEO performance.

  • Built membership & subscription systems, dashboards, and custom reporting tools.

  • Integrated Google Maps API, created Help Centers, and implemented real-time data visualization.

  • Used ColdFusion, D3.js, and jQuery for custom modules and analytics tools.

🔹 UI/UX Developer & QA Analyst

Client: KYC-Chain (Remote)
Duration: Nov 2016 – Apr 2021 | 20 hrs/week

  • Designed responsive interfaces and created dynamic mockups with Balsamiq & Justinmind.

  • Conducted comprehensive QA cycles including TDD and regression testing.

  • Worked on multilingual UI development using Highcharts, Kendo UI, and Backbone.js.

  • Built AJAX/JSON-powered components for speed and UX enhancement.

🔹 Software Developer

Client: airisX (Remote)
Duration: Oct 2013 – Sep 2015 | 18 hrs/week

  • Developed a customer support ticketing system and optimized database operations.

  • Designed PDF forms with SharePoint integration and streamlined contract reporting.

  • Built scalable backend logic with PHP 5 and Oracle 10g.

🔹 Web Developer

Client: Net@Work Inc (Remote)
Duration: July 2013 – May 2014 | 18 hrs/week

  • Developed collaborative tools for vendor demand planning and CRM enhancements.

  • Created secure, responsive websites and built custom modules for invoice and inventory tracking.

🔹 UI Developer / Programmer Analyst

Client: Brooklyn Web Site Services (Remote)
Duration: June 2010 – June 2012 | 10 hrs/week

  • Designed UIs and wireframes for financial apps; implemented SEO best practices.

  • Built APIs for TCP/IP socket communication and internal analytics.

Consultant Experience

  • Web Development – iVortex Media (2016–2021)

  • Web Optimization – Net@Work Inc (2019–2024)

  • UI Optimization – Brooklyn Web Site Services (2020–Present)

🤝 Volunteer & Mentoring: Mentor, Code for Good Hackathon (2022, 2023)
Guided student teams in building socially impactful digital solutions.

🏆 Certifications

  • Google Analytics Certified (2023)

  • AWS Certified Solutions Architect – Associate (2022)

  • HubSpot Content Marketing (2021)

  • Responsive Web Design – freeCodeCamp (2018)

Individual Projects

  • E-commerce Optimization Platform – React.js dashboard with Stripe integration.

  • Portfolio Management App – Vue.js + Firebase, real-time CRUD & auth system.

  • SEO Analytics Tool – Python-based keyword scraper for competitor insights.