Hire the Best Elixir Developers
in Ukraine

Elixir Developer with 8+ years in backend and full-stack development, specializing in high-performance web applications and distributed systems. Experienced in Elixir, Phoenix, PostgreSQL, and microservices architecture. Passionate about optimizing system performance, improving developer efficiency, and mentoring junior engineers. Adept at collaborating with cross-functional teams in Agile environments to deliver scalable and resilient software solutions.

Hi, I’m Zlata. I’m basically a typical American software developer... just living in Ukraine now. And I always work in the EST timezone. I’ll write everything in any tech stack you have 😄 I’m a Software Engineer with 8+ years of experience as a Ruby on Rails developer, React developer, Node.js developer, Python developer, and .NET developer. I work with Ruby on Rails, React, Node.js, Python, .NET, PostgreSQL, Docker, AWS, JavaScript, TypeScript, API development, API integration, and SaaS software development. I help companies build and improve SaaS platforms, ERP systems, CRM tools, dashboards, marketplaces, internal systems, API products, and complex web applications using Ruby on Rails, React, Node.js, Python, and .NET. My focus is clean product logic, stable delivery, scalable architecture, and software that stays easy to maintain as the business grows. 📊 My Achievements in Numbers: 🔶 Ruby on Rails Developer for a Construction Application Platform ▪ Helped build a Ruby on Rails + React platform for managing construction applications, reviews, documents, and stakeholder workflows. ▪ Reduced application review time by 42%. ▪ Supported 18,500+ construction applications processed in the first year. ▪ Helped the product reach $1.4M ARR within 14 months. ▪ Worked with Ruby on Rails, React, PostgreSQL, Docker, AWS, S3, and API integration. 🔶 React Developer for a Construction Materials ERP SaaS ▪ Helped improve a complex ERP SaaS platform for concrete, aggregates, and asphalt producers. ▪ Improved sales, pricing, and operational workflows through better product logic and scalable software architecture. ▪ 98% of demo users became clients after product improvements. ▪ 91% of users rated the interface as clear and intuitive. ▪ The product later raised $3.4M. ▪ Focused on React, Ruby on Rails, SaaS workflows, API development, and complex web application structure. 🔶 Node.js Developer for an Aviation Maintenance SaaS ▪ Helped improve a complex aviation maintenance SaaS product used by field teams. ▪ 96% of demo users became clients after the product improvements. ▪ 97% of field users adopted the product after the first try. ▪ Reduced user errors by 41% and made onboarding 62% faster. ▪ Supported product logic, API integration, dashboards, and connected SaaS workflows using Node.js, React, Ruby on Rails, and API development. 🔶 Python Developer for an AI Healthcare SaaS ▪ Supported an AI-powered healthcare platform that grew from a chatbot into multiple AI agents for clinics and hospitals. ▪ The product raised $20M+. ▪ Helped support workflows that increased patient visits by 31%. ▪ Helped reduce call abandonment by 98%. ▪ Worked with Python, API integration, automation workflows, AI-related product logic, and scalable SaaS architecture. 🔶 .NET Developer for a Utility Billing Platform ▪ Helped improve utility billing workflows for a SaaS platform processing complex customer, billing, and reporting data. ▪ Helped process $14M+ in utility bills within 6 months. ▪ Reduced billing cycle time from 9 days to 1.5 days. ▪ Supported 96% client retention through better product stability and workflow clarity. ▪ Worked with .NET, React, API development, reporting logic, SaaS architecture, and reliable software delivery. Why should you hire me as a Software Engineer? ▪ 8+ years of experience with Ruby on Rails, React, Node.js, Python, .NET, JavaScript, TypeScript, PostgreSQL, API development, API integration, and SaaS software development. ▪ 120+ successful projects delivered across B2B SaaS, ERP, CRM, healthcare, construction, logistics, fintech, aviation, and internal business platforms. ▪ Strong experience with Ruby on Rails, React, Node.js, Python, and .NET for SaaS products, dashboards, admin panels, API-first platforms, integrations, automation, AI features, and enterprise systems. ▪ I use Claude, Cursor, GitHub Copilot, and ChatGPT to speed up research, debugging, refactoring, and delivery. ▪ I work well with founders, CTOs, product managers, and teams that need clear communication across Ruby on Rails, React, Node.js, Python, and .NET products. What I can help you with: ✔️ Build or improve Ruby on Rails SaaS products ✔️ Create React dashboards, portals, admin panels, and SaaS interfaces ✔️ Build Node.js services and API integrations ✔️ Support Python automation, data workflows, and product logic ✔️ Work with .NET systems and connected software platforms ✔️ Build API-first products with Ruby on Rails, React, Node.js, Python, .NET, PostgreSQL, Docker, and AWS ✔️ Improve performance, stability, and maintainability of existing Ruby on Rails, React, Node.js, Python, and .NET applications ✔️ Support SaaS, ERP, CRM, fintech, healthcare, logistics, construction, and internal tools Need help with Ruby on Rails, React, Node.js, Python, .NET, API development, or SaaS development? Message me and let’s discuss your product. 📩🤝

Hi! I am a professional Java / Elixir / Erlang Developer with over 13 years of job experience in Tech. I am expertised in creating systems under high-load as well as with a great throughput and performance. MY TECH STACK ✅ Erlang / Elixir ✅ Java EE ✅ NoSQL (Mongo, Cassandra, Redis) ✅ Docker I have advanced knowledge of functional programming, performance optimization and architecture design and implementation. Let's work together! LANGUAGES I SPEAK Ukrainian is my native language. Besides, I have strong English skills. Most of my previous customers were English-speaking, so I am comfortable communicating in English. MY TEAM I am at ease as an individual contributor, but being a team player works best for me. So I joined Extrawest — an Upwork Top Rated Agency specializing in FinTech and Banking, Gambling and Betting, Food Ordering and Delivery, Logistics and Fleet Management, Medical Insurance and Healthcare, and special software for Electric Vehicles Charging Station networks since 2006. Having most of our resources based in Europe, we’ve been working with customers from over 20 countries (the US, Canada, Australia, most of the EU, South Africa, Singapore, Japan). Hence, it won’t be a problem for us to adjust to your timezone and working schedule. INVITE ME FOR AN INTERVIEW If you feel I’m a perfect match for your project, invite me, and let’s streamline your business’s growth! 🟩 🟩 🟩 🟩 My Agency Skills: Front-End (Frontend) Development, Back-End (Backend) Development, Full-Stack (Fullstack) Development, Mobile Development, EV Charging, Automotive, Logistics, Delivery, Food Ordering, FinTech, Banking, Healthcare, Insurance, Betting, Gambling, Data Scraping, Flutter, Dart, JavaScript (JS), TypeScript (TS), Angular, Vue.js (VueJS, Vue), React.js (ReactJS, React), Node.js (NodeJS, Node), Java, Spring, SpringBoot, Hibernate, Python, Django, Scrapy, Quality Assurance (QA), Manual Testing, Automated Testing, Selenium, UI/UX Design, User Interface (UI), User Experience (UX), Figma, Adobe Creative Cloud, DevOps, MySQL, PostgreSQL, MongoDB, Firebase, REST API, FastAPI, Docker, Amazon Web Services (AWS), Google Cloud Platform (GCP), Project Management (PM).

I am an ambitious and strategic-thinking Leading Software Engineer and Feature Lead with 10+ years of global experience in managing software development and project architecture, adept at building impactful tools and managing services. In the USA, UK, and European markets. *Skills* Proficient in software development using Clojure, Golang, Python, NodeJS, Elixir and others. Experienced in test-driven development methodologies. Well-versed in working with cloud platforms such as Google Cloud Platform and AWS. Skilled in testing and maintenance of software systems. Capable of effectively understanding and addressing client requirements. Proficient in managing build releases. Experienced in team oversight and collaboration. Competent in front-end development utilizing JavaScript, TypeScript, and ClojureScript. Strong ability to work in cross-functional teams. Tech stack agnostic, adaptable to different technologies and frameworks. Demonstrated strong learning skills, quickly acquiring new knowledge and staying updated with the latest industry trends.

Tired of slow features, unpredictable performance, or code that feels like a house built on toothpicks? I’m Ihor — a Senior Ruby on Rails & Node.js Engineer who helps startups and growing companies stabilize, optimize, and scale their products without burning time or budget. With 7+ years of hands-on experience, I specialize in performance optimization, clean architecture, backend scalability, and smooth user experience. 𝐀 𝐟𝐞𝐰 𝐰𝐢𝐧𝐬 𝐈'𝐦 𝐩𝐫𝐨𝐮𝐝 𝐨𝐟 - 3.5× trial conversions & 2.8× paying customers By re-architecting critical flows, fixing bottlenecks, and improving onboarding UX. - Helped secure £1M in seed funding By clearly demonstrating product stability, reliability, and scaling potential to investors. - 30% faster customer support operations Delivered internal system improvements that boosted satisfaction while reducing costs. - 40% faster app response times & $55k/year saved Led the rebuild of a core Rails application, improving performance and reducing infrastructure spend. 𝐓𝐞𝐜𝐡 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 Backend Ruby, Ruby on Rails, Node.js, Express, Sidekiq, Redis, RSpec, Capybara, Rubocop, Capistrano, Unicorn, Puma, Ruby gems Frontend (light integration level) HTML5, HAML, ERB, CSS3, SCSS, Bootstrap Databases PostgreSQL, MySQL, SQLite3, MongoDB, ElasticSearch, Redis Infrastructure / DevOps Nginx, Apache, Heroku, DigitalOcean, AWS (S3), CI/CD pipelines Tools & Practices Git (GitHub, GitLab, Bitbucket), TDD, BDD, Agile/Scrum, Jira, Notion, Trello, Monday, PivotalTracker 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞 You can collaborate with me through Gotoinc using two models: 1️⃣ Talent-as-a-Service A dedicated Senior Engineer (or team) on a subscription-based engagement. 2️⃣ Project-Based Development We deliver a clearly defined scope with fixed timelines and budget. 𝐇𝐨𝐰 𝐰𝐞 𝐬𝐭𝐚𝐫𝐭 1. Quick intro call 2. We gather your requirements 3. We define the needed talent/team 4. You receive a tailored proposal 5. Contract signing 6. Project kickoff Let’s build something strong, fast, and reliable Click the 🟢 INVITE button — tell me about your product, and I’ll help you understand the best path forward. Last updated: December, 2025

I build, scale, and optimize high-performance SaaS platforms and AI-powered web applications. From complex Rust backends to modern Next.js frontends, I help founders launch MVPs in 4-8 weeks. Building a successful software product requires more than just writing code — it demands thoughtful architecture, clear system design, and a product-first engineering mindset. Most companies and product teams face at least one of these challenges: • they need to build a complex SaaS platform but lack full-stack expertise • their current product struggles to scale as the user base grows • development slows down because of technical debt or weak architecture • they want to integrate AI workflows but are unsure how to implement them This is where I step in. I design and engineer end-to-end full-stack systems that support real business growth, ensuring scalability, security, and maintainability. 🏆 RESULTS I’VE DELIVERED FOR CLIENTS Projects I’ve built consistently deliver measurable outcomes: • launched SaaS platforms and MVPs in 4–8 weeks, accelerating time-to-market • reduced development and feature-release timelines by 40–60% • automated operations (ETL, API integrations), saving teams 15–25 hours weekly • scaled platforms to smoothly support 10K–50K+ active users • reduced cloud infrastructure costs by up to 30% through backend optimization 💻 WHAT I BUILD My focus is full-stack software development and SaaS architecture. Typical projects include: • end-to-end SaaS platforms (multi-tenant architecture, billing, auth) • AI-powered applications and intelligent automation workflows • Custom CRM & ERP Systems: Building scalable customer management tools with lead tracking, task automation, and custom internal workflows. • high-performance web applications and operational dashboards • scalable backend systems and robust API infrastructure • complex third-party API integrations (Odoo, CRMs, Payment Gateways) ⚙️ MY TECH STACK & EXPERTISE • Backend & Core: Rust (Tokio, Actix/Axum), Node.js, Python, Tauri • Frontend: Next.js, React.js, TypeScript, JavaScript, Tailwind CSS • AI & APIs: OpenAI API, Gemini, Claude, REST APIs, GraphQL • Databases: PostgreSQL, Supabase, MongoDB, Redis, SQLite • Infrastructure: AWS, GCP, Docker, Kubernetes, GitHub Actions (CI/CD) 🎯 TYPICAL DEVELOPMENT SCENARIOS End-to-End SaaS Development Building a SaaS requires connecting multiple layers securely. I help teams design database schemas, robust APIs, and modern frontends while integrating subscription billing (Stripe) and deploying to scalable cloud infrastructure. AI Integrations & Feature Expansion Many products want to leverage AI to increase value. I build AI-driven features like chat assistants, automated content generation, intelligent search (RAG), and data analysis tools directly into existing workflows. Business Automation & Internal Tools Companies often outgrow spreadsheets. I build internal web applications and perform ETL (Extract, Transform, Load) processes that automate operations, connect fragmented systems (like Odoo), and provide clear operational dashboards. 🔄 MY DEVELOPMENT PROCESS To deliver reliable software fast, I follow a structured workflow: Step 1: Requirements & Planning Defining business logic, user flows, and technical requirements. Step 2: Architecture & Database Design Designing scalable backend architecture and secure data models. Step 3: Full-Stack Development Building frontend interfaces and backend services with clean, maintainable code. Step 4: Deployment & Optimization Setting up cloud infrastructure (Docker/AWS), CI/CD pipelines, and monitoring. 🤝 WHO I WORK WITH Most of my clients include: • SaaS startups launching new platforms • product teams needing senior full-stack expertise without the agency overhead • established businesses optimizing internal operations Typical project budgets range from $5K to $50K depending on scope and complexity. 💡 WHY WORK WITH ME? Beyond writing code, I bring product vision, fluent English, and transparent communication. I collaborate closely with founders to translate ideas into technical milestones, avoiding architectural mistakes that kill growth later. My goal is simple: build software that performs reliably today and continues to scale as your users, data, and business grow. 📩 IF YOU’RE WORKING ON: • a new SaaS platform • an AI-powered web application • a complex backend architecture • a business automation system Reach out and share your project details. Let's discuss the best technical approach for your product!