Resume

Valera Tumash, Automation & AI Systems Architect.

Senior Full Stack Developer with 13+ years across SaaS, e-commerce, and accounting. Currently focused on AI automation, blending modern UI/UX with clean architecture to streamline workflows and unlock business value. Globally experienced across Eastern Europe, Australia, Indonesia, and China.

See selected projects

Key achievements

What stayed - across roles.

01

Led company-wide AI adoption

Pioneered AI adoption in the dev team by convincing the entire team to start using Copilot for VSCode and then Cursor IDE, also seeded doubts in the support team so they later adopted AI categorization for incoming requests.

02

Team leadership

Successfully recruited and mentored five junior developers, fostering a culture of collaboration and innovation.

03

Performance & code quality

Improved front end performance by 30% through strategic refactoring and lazy-loading. Revamped legacy systems with modular architecture, reducing technical debt by 50%.

04

99.5% production success rate

Built production workflows processing 50+ interviews/month with 99.5% success rate. 80+ node orchestration, parallel processing, comprehensive error handling.

05

96% time reduction

Automated bank statement processing reducing monthly reconciliation from 4 hours to 10 minutes across 8+ bank accounts with 95%+ AI categorization accuracy.

06

User-centric designs

Enhanced user retention by implementing intuitive, responsive UI/UX solutions with accessible designs.

07

Scalable ML services

Built Speaker Diarization API processing 2-hour, 500MB audio files in <5 minutes with 99.9% uptime targets and asynchronous Redis job queues.

Experience

15 years across the stack.

Freelancing

Remote 2025 - Present

AI Automation Engineer & Consultant

  • Design and deploy bespoke AI automation workflows using n8n, Make.com, and LLMs (OpenAI, Llama, DeepSeek, Grok, Claude), optimizing business processes for e-commerce, SaaS, and accounting clients
  • Developed an AI-powered receipt extraction tool, automating categorization and calculations, saving clients 10+ hours weekly
  • Built a freelancing job matcher integrating Telegram APIs, ranking opportunities by relevance and generating tailored cover letters, enhancing application efficiency by 50%
  • Skilled in integrating APIs (Google, Telegram), deploying self-hosted systems on AWS, and leveraging AI for real-world applications like document processing and trend analysis
  • Developed open-source AI tools and case studies, demonstrating practical applications like YouTube automation, invoice processing, and image recognition
  • Running mentorship and workshop programs, providing technical guidance and training to individuals and teams on AI automation, workflow design, and modern development practices

AAA Accelerator Limited

Remote 05/2025 - Present

Development Coach

AAA Accelerator Limited is a forward-thinking company founded by Liam Ottley, a key figure in the AI education space, dedicated to empowering individuals through advanced technical training in AI and related technologies.

  • Conducted more than 800 technical support and training calls with program clients, providing expert explanations, troubleshooting assistance, and practical guidance
  • Actively monitored the dedicated client help channel, providing prompt, clear, and actionable responses. Wrote coaches' insights posts for the community twice a month
  • Hosted live, recorded workshops for the community and participated in brainstorming sessions for new workshop topics

BrainVector

Sydney, Australia 03/2025 - 12/2025

Senior Automation and AI Systems Architect

Hands-on role focused on the design, architecture, and deployment of modern conversational AI platforms and complex, cloud-native automation workflows. Led two core full-stack software projects and engineered two highly complex, production-grade automation systems, integrating advanced AI services (Gemini, ElevenLabs, PyAnnote) with scalable cloud infrastructure (Next.js, Supabase, GCP, n8n, Docker).

  • Architected and deployed a full-stack conversational AI platform (Cerebrum) using Next.js 15, React 19, and Supabase, delivering real-time chat via CometChat and enhanced with ElevenLabs voice synthesis
  • Engineered a scalable Speaker Diarization API Service using Python/FastAPI and HuggingFace ML models, with asynchronous audio processing via Redis job queues to handle 2-hour, 500MB audio files on GCP
  • Designed and deployed an 80+ node, end-to-end AI Interview Workflow with FFmpeg audio concatenation, multi-format Drive storage, and schema-enforced answer extraction using Gemini 2.0 Flash
  • Telegram Bot Clinical Onboarding System (70+ nodes): three-bot architecture with Gemini 1.5 Flash and 20-message memory buffers. Reduced manual setup time by 95% while maintaining conversation continuity
  • Integrated Google Vision API and Gemini 1.5 within asset intake to detect quality issues, achieving 92% accuracy on non-empty response parsing
  • Spearheaded production deployment with PM2/Traefik and Docker/GCE, integrating CI/CD pipelines (Bitbucket, ESLint, Husky)

Solar Analytics

Sydney, Australia 02/2015 - 02/2025

Lead Front End Engineer

  • Spearheaded the development of a hybrid AngularJS-Angular SPA, progressively migrating legacy AngularJS code to the latest Angular versions
  • Engineered custom D3.js/NVD3-based data visualization tools, enabling users to interpret energy analytics with real-time updates
  • Designed and implemented a white-labeling solution, boosting client customization capabilities and increasing sales
  • Introduced unit testing (Jasmine) and end-to-end testing (Cypress), reducing production issues by 40%
  • Led a team of 5 developers, mentoring junior engineers, conducting code reviews, and optimizing workflows
  • Built scalable cloud solutions leveraging AWS Lambda, API Gateway, S3, and DynamoDB

Key achievementPromoted from Junior Front End Developer to Lead Engineer within five years.

Freelancing

Remote 2023

Web3 Developer & Full Stack Consultant

  • Built an NFT storefront MVP on Solana using React and Metaplex, integrating Arweave for asset storage and Strapi for back-office management
  • Explored Rust and Solidity for blockchain development, completing foundational smart contract training via Crypto Zombies

Web Your Way

Sydney, Australia 2016 - 2021

Managing Director

  • Founded and scaled a boutique web agency, delivering 50+ performance-optimized websites using WordPress, Drupal, and Shopify
  • Managed end-to-end project lifecycles - client acquisition, UI/UX design, development, and SEO - achieving 25% higher organic traffic
  • Integrated CRM automation (HubSpot, Salesforce, Zapier), reducing manual workflows by 35%

Orion Creative + short term contracts

Sydney, Australia 2014

Front End Developer

  • Delivered responsive Drupal CMS-based websites using HTML/CSS, JavaScript (jQuery), and Sass, following mobile-first principles
  • Developed custom Drupal modules and integrated PayPal API for seamless online payments
  • Conducted cross-browser and cross-device testing with accessibility compliance (WCAG)

Key achievementIntroduced a Drush-based project bootstrapping process, reducing setup times by 30%.

Horadric.RU

Remote 2011 - 2013

Co-founder & Lead Developer

  • Designed, developed, and maintained a high-traffic gaming platform with 30,000+ daily unique visitors using Drupal CMS, phpBB forums, and MediaWiki integration
  • Enhanced site performance and scalability by optimizing Apache and Nginx servers to handle high loads
  • Launched a successful tournament service hosting 1,000+ contests, driving community engagement and increasing site traffic by 15%
  • Led SEO initiatives, increasing search visibility and annual ad revenue by $30,000 through affiliate marketing and partnerships

Key achievementUnified multiple CMS platforms under a single login system, significantly improving the user experience.

Freelancing

Remote 2010 - 2014

Front End Developer & Consultant

  • Delivered pixel-perfect, responsive websites using hand-coded HTML, CSS, and JavaScript
  • Developed eCommerce features for Drupal Commerce and OpenCart, reducing cart abandonment by 30%
  • Mentored junior developers, fostering their growth in clean coding practices and responsive design principles

Key achievementIntroduced responsive design and mobile-first methodologies as best practices for client projects.

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