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Adrijus JakucionisAJ

Adrijus Jakucionis

Building High-Performance Scalable Software | WEB

€625/day
Zurich, CH
8-15 years

Average response time: 1 hour

About Adrijus

Hi,

If you’re looking for someone who can build and successfully scale software products, you’re in the right place.

I’m a full-stack engineer with deep startup experience and a proven track record. I was the sole developer behind Contribee - a leading content-creator platform in the Baltics. Over three years, I architected and built the entire platform from scratch, scaling it to 25,000 active paying subscribers. The product was designed for performance, security, and growth, and in 2024 Contribee exited successfully.

That journey shaped how I work today: ship fast, build smart, and scale without breaking.

I thrive in startup/SMEs environments where speed matters, technical debt must be controlled, and products need a real competitive edge. My focus is on building revenue-driven software, optimized for performance, UX, SEO, and modern AI-powered workflows.

What I Bring to the Table?

1. Backend & APIs
Laravel backend development
API integrations
AI integrations (Claude, OpenAI, Grok)
Secure, scalable API architecture

2. Frontend & Product Experience
Nuxt.js applications with SSR & SEO-ready pages
PWA mobile apps
Performance-optimized dashboards and whiteboards
Advanced logging and analytics
AI & Automation
Custom AI wrappers (Claude / GPT / Grok)

3. Node.js & Python AI services
Blockchain & Crypto (Solana)
Real-time SOL transaction processing
Automated crypto payment collection
Wallet analytics, lifetime PnL tracking, and backtesting

4. Design & UX
Figma-based UX/UI design
Conversion-focused layouts
Reduced friction, fewer clicks, better user flow

5. Databases & Search
PostgreSQL, MySQL
Query optimization and indexing
Search engine integrations like Algolia

6. Infrastructure & DevOps
Google Cloud & AWS (VPS, load balancing, session persistence)
Cloudflare (DNS security, Brotli compression, performance tuning)
Docker & GitHub workflows

Let's launch your unicorn together!

  • English

    Native or bilingual

  • Lithuanian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Contribee.com
    Co-founder & CTO
    DIGITAL AND IT
    January 2021 - December 2023 (2 years and 11 months)
    Kaunas, Lithuania
    Co-founded the company and took a leading role in defining and executing its technical vision and strategy. Designed, implemented, and scaled a robust, high-performance platform that successfully supported over 22,500 monthly active subscribers and 1000+ content creators, ensuring reliability, security, and seamless user experience. Architected and managed the end-to-end infrastructure, including cloud systems, databases, and application architecture, capable of handling rapid user growth and high traffic demands. Led a team of engineers in developing scalable solutions, optimizing system performance, and deploying new features efficiently, while establishing best practices for development, deployment, and operational monitoring. Played a pivotal role in aligning technical capabilities with business goals, enabling the company to achieve sustainable growth and maintain a competitive edge in a fast-evolving market.
    Laravel PostgreSQL Figma HTML5 CSS3
  • Contribee.com
    Co-founder & CEO
    DIGITAL AND IT
    January 2024 - November 2024 (10 months)
    Kaunas, Lithuania
    Led the company through a challenging period of operational and strategic instability, implementing measures to stabilize business operations and restore organizational focus. Drove product adaptation and localization efforts to successfully expand into new markets, including Spanish-speaking regions (Spain and Latin America) and the United Kingdom, tailoring offerings to meet regional customer needs and cultural expectations. Developed and executed data-driven strategies to track key performance metrics, optimize product performance, and identify growth opportunities. Collaborated closely with cross-functional teams to enhance operational efficiency, improve user engagement, and strengthen revenue streams. These efforts guided the company into a sustained growth phase, ultimately culminating in a successful acquisition and exit, demonstrating the ability to combine strategic vision with hands-on execution across product, market expansion, and operational performance.
    Figma Miro Atlassian JIRA Laravel HTML5
  • MyDoup.com
    Developer
    DIGITAL AND IT
    August 2019 - August 2020 (1 year)
    Valletta, Malta
    Led the development of next-generation NFC-enabled business cards, focusing on both hardware and software innovations. Designed and implemented advanced profile customization features, allowing users to personalize their digital business cards with contact information, social media links, and multimedia content. Oversaw the deployment and adoption of these NFC cards in Malta, positioning them as the primary solution for digital networking in the region. Worked closely with design, engineering, and marketing teams to ensure the product met user needs, delivered a smooth user experience, and established a strong market presence. Additionally, contributed to product iterations based on user feedback, performance metrics, and emerging trends in digital business solutions.
    Laravel NFC HTML5 MySQL GitHub

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Education

  • Infrastructure scaling with AWS
    Cloudvisor
    2022

Skill set

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