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10 yearsbuildingscalableWeb solutionsUser experiencesEngineering teams

Hi, I’m Roman!Hi, I’m Roman! ✌️

Senior Software EngineerSenior Software Engineer
Team/Tech LeadTeam/Tech Lead

For over 10 years, I’ve been building modern web applications – from small ideas to large-scale platforms used by thousands of people – focused on performance, scalability, and long-term reliability.For over 10 years, I’ve been building modern web applications – from small ideas to large-scale platforms used by thousands of people – focused on performance, scalability, and long-term reliability.

a little busy, but happy to talk

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  • React Development✦
  • Next.js Development✦
  • TypeScript Development✦
  • Node.js Development✦
  • React Native Development✦
  • React Development✦
  • Next.js Development✦
  • TypeScript Development✦
  • Node.js Development✦
  • React Native Development✦

About me

I’m a Senior Software Engineer and Team Lead with over 10 years of experience turning business needs into reliable software. I enjoy engineering challenges that make life easier for people and help businesses grow their revenue. I’ve worked with agencies, SaaS companies, and startups across the full stack, building applications, backend services, and integrations. I take ownership from the first conversation through launch and years of ongoing development. Working closely with designers, product managers, and founders, I make technical decisions that balance immediate priorities with the product’s long-term goals.I’m a Senior Software Engineer and Team Lead with over 10 years of experience turning business needs into reliable software. I enjoy engineering challenges that make life easier for people and help businesses grow their revenue. I’ve worked with agencies, SaaS companies, and startups across the full stack, building applications, backend services, and integrations. I take ownership from the first conversation through launch and years of ongoing development. Working closely with designers, product managers, and founders, I make technical decisions that balance immediate priorities with the product’s long-term goals.

I’ve built engineering teams from the ground up, led them as a tech lead and team manager, and mentored developers. I put clear processes in place so teams can collaborate well, deliver consistently, and do work they’re proud of. More recently, I’ve been focusing onI’ve built engineering teams from the ground up, led them as a tech lead and team manager, and mentored developers. I put clear processes in place so teams can collaborate well, deliver consistently, and do work they’re proud of. More recently, I’ve been focusing on AI-poweredAI-powered features and automation that make products more useful and help teams work more effectively.features and automation that make products more useful and help teams work more effectively.

CV ✦ CV ✦ CV ✦ CV ✦
✦↗
  • Agentic Engineering✦
  • n8n Workflow Automation✦
  • Python Development✦
  • PostgreSQL Database✦
  • Team leadership✦
  • Agentic Engineering✦
  • n8n Workflow Automation✦
  • Python Development✦
  • PostgreSQL Database✦
  • Team leadership✦

Selected work

I’ve worked with product teams, agencies, and clients to build software that people rely on. Here’s a selection of that work, from AI platforms and custom applications to years of freelance projects. Across these roles, I’ve combined full stack development with technical leadership, helping teams turn complex requirements into clear, useful products.I’ve worked with product teams, agencies, and clients to build software that people rely on. Here’s a selection of that work, from AI platforms and custom applications to years of freelance projects. Across these roles, I’ve combined full stack development with technical leadership, helping teams turn complex requirements into clear, useful products.

  1. Mar ’22 — now

    HIDDEN

    Lead Frontend Developer
    Senior Full Stack Developer

    Leading frontend architecture and delivering AI features across React and TypeScript applications, backend services, and data integrations.

    • frontend architecture
    • full stack development
    • AI product design
    • team leadership
    • HIDDEN✦
    • HIDDEN✦
    • HIDDEN✦
    • HIDDEN✦
    • HIDDEN✦
    • HIDDEN✦
    • HIDDEN✦
    • HIDDEN✦
  2. Nov ’19 — Mar ’22

    StarNavi.io

    Senior Full Stack Developer

    Building polished, production-ready interfaces and backend services across client products with different audiences, constraints, and ambitions.

    • full stack development
    • Node.js & Python
    • team management
    • mentoring & hiring
    • StarNavi.io✦
    • StarNavi.io✦
    • StarNavi.io✦
    • StarNavi.io✦
    • StarNavi.io✦
    • StarNavi.io✦
    • StarNavi.io✦
    • StarNavi.io✦
  3. Jan ’15 — Nov ’19

    Freelance

    Full Stack Developer

    Delivering end-to-end development, from simple websites to complex, high-traffic applications, with direct client collaboration throughout.

    • end-to-end development
    • full stack delivery
    • technical consulting
    • client collaboration
    • Freelance✦
    • Freelance✦
    • Freelance✦
    • Freelance✦
    • Freelance✦
    • Freelance✦
    • Freelance✦
    • Freelance✦
  4. Jan ’15 — Nov ’19

    uCoz.com

    Frontend Web Developer
    Marketplace Template Author

    Designing, developing, and selling customizable uCoz CMS templates as an author on the platform’s official marketplace.

    • CMS templates
    • responsive design
    • product marketing
    • customer support
    • uCoz.com✦
    • uCoz.com✦
    • uCoz.com✦
    • uCoz.com✦
    • uCoz.com✦
    • uCoz.com✦
    • uCoz.com✦
    • uCoz.com✦
  5. ∞

    Playground

    Concept director

    Exploring new interaction ideas, visual systems and technical techniques before they have to fit a client brief.

    • interaction studies
    • generative systems
    • prototyping
    • visual research
    • Playground✦
    • Playground✦
    • Playground✦
    • Playground✦
    • Playground✦
    • Playground✦
    • Playground✦
    • Playground✦

Work experience

HIDDEN

Lead Frontend Developer
Senior Full Stack Developer

March 2022 — Present

I lead frontend architecture and delivery at HIDDEN and contribute to AI features across the full stack. Alongside React and TypeScript applications in an Nx monorepo, I work on backend services with Go and Python and data integrations with PostgreSQL and Snowflake.

Context

HIDDEN connects advertising workflows, business data, and AI to help brands and agencies manage media operations. The engineering challenge is to make complex workflows easy to use while keeping interfaces, services, and data consistent as the platform evolves.

My contribution

  • Shape frontend architecture with React, TypeScript, and Nx, creating shared patterns the team can build on.
  • Develop AI features across the interface and backend, connecting product flows with APIs and data.
  • Contribute to Go and Python services and data integrations with PostgreSQL and Snowflake.
  • Build an analytics system and business intelligence (BI) tools that help teams explore data, track performance, and make informed decisions.
  • Lead and mentor developers, review technical decisions, and help the team maintain a consistent approach to delivery.
  • Work with design and product to turn complex requirements into clear, accessible user experiences.

Impact

Clearer product flows, reusable frontend foundations, and better alignment between interface, backend, and data work. These foundations help the team deliver AI features consistently and keep the platform maintainable as requirements change.

Expertise

  • ✦frontend architecture
  • ✦full stack development
  • ✦AI product design
  • ✦React
  • ✦TypeScript
  • ✦Nx & monorepos
  • ✦Go
  • ✦Python
  • ✦Kafka
  • ✦PostgreSQL
  • ✦Snowflake
  • ✦team leadership
  • ✦mentoring

StarNavi.io

Senior Full Stack Developer

November 2019 — March 2022

At StarNavi, I worked across frontend and full stack projects for clients with different products, teams, and business needs. Alongside interface development, I built backend features with Node.js and Python, managed engineering teams, and supported hiring and developer growth.

Context

StarNavi delivers custom software for businesses through outsourced development teams. I worked on both dedicated frontend engagements and full stack projects, adapting to different domains, existing systems, and client priorities.

My contribution

  • Delivered frontend and full stack features, combining responsive interfaces with Node.js and Python backend services.
  • Translated complex client requirements into reusable components, clear APIs, and maintainable application architecture.
  • Managed engineering teams and established practical processes for planning, code review, and delivery.
  • Mentored junior developers through feedback, technical guidance, and increasing ownership of real project work.
  • Hired developers and helped them settle into project teams and delivery processes.

Impact

Maintainable client applications and teams better equipped to deliver them. Work across frontend, backend, hiring, and mentoring helped align implementation decisions, team responsibilities, and client expectations.

Expertise

  • ✦full stack development
  • ✦frontend architecture
  • ✦Node.js
  • ✦Python
  • ✦API development
  • ✦team management
  • ✦mentoring
  • ✦hiring & onboarding
  • ✦delivery processes
  • ✦client collaboration

Freelance

Full Stack Developer

January 2015 — November 2019

I spent several years delivering end-to-end development for a wide range of clients, from startups and established businesses to enterprise teams. I handled frontend and backend work, advised clients on architecture, and took features from the first requirements through launch and ongoing development.

Context

Clients came with different budgets, business models, and levels of technical experience. The work ranged from maintaining legacy systems to building React and TypeScript applications, with some Angular projects. Backend work involved Node.js, PHP, and some Python, alongside PostgreSQL, MySQL, and MongoDB.

My contribution

  • Delivered complete websites and product features end to end, from planning and implementation to launch and ongoing support.
  • Built and modernized frontend applications, helping clients work with both legacy systems and newer architectures.
  • Developed backend features, integrations, and data flows to support complete product functionality.
  • Advised clients on frontend architecture, technical priorities, and the tradeoffs behind implementation choices.
  • Built a repeatable workflow for client communication, scoping, and delivery, informed by business needs and some marketing experience.

Impact

Clients had a consistent point of contact for development, technical decisions, and delivery. Complete features and maintainable systems supported both immediate business needs and continued product development, while a clear working process made collaboration more predictable.

Expertise

  • ✦end-to-end development
  • ✦frontend architecture
  • ✦React
  • ✦TypeScript
  • ✦Angular
  • ✦Node.js
  • ✦PHP
  • ✦Python
  • ✦PostgreSQL
  • ✦MySQL
  • ✦MongoDB
  • ✦legacy modernization
  • ✦API integrations
  • ✦technical consulting
  • ✦client communication
  • ✦project planning

uCoz.com

Frontend Web Developer
Marketplace Template Author

January 2015 — November 2019

As an independent template author on the official uCoz marketplace, I designed, developed, and sold customizable templates for the platform’s CMS. I handled the full product lifecycle, from design and HTML/CSS development to promotion, customer support, and ongoing improvements.

Context

The work combined frontend development with running a small digital product business. I needed to balance visual design, responsive layouts, and customization options with how customers discovered, purchased, and used the templates.

My contribution

  • Designed and developed responsive, customizable uCoz CMS templates with HTML and CSS.
  • Published and sold templates through the official marketplace, managing each product from initial concept to release.
  • Promoted my templates and developed marketing strategies to reach new customers.
  • Added features and refined existing templates based on customer feedback and practical usage.
  • Provided direct customer support, resolved template issues, and helped with customization requests.

Impact

Customers received customizable templates backed by direct support and ongoing improvements. Managing development, marketing, and sales gave me practical experience in building digital products and understanding the business behind them.

Expertise

  • ✦HTML
  • ✦CSS
  • ✦responsive web design
  • ✦CMS template development
  • ✦UI design
  • ✦product marketing
  • ✦customer support
  • ✦client communication
View

Services

I help you launch new products, improve existing platforms, and make confident technical decisions. From full stack development to engineering leadership and technical consulting, I work with clear priorities and keep you involved throughout. Let’s talk about what your product needs next.I help you launch new products, improve existing platforms, and make confident technical decisions. From full stack development to engineering leadership and technical consulting, I work with clear priorities and keep you involved throughout. Let’s talk about what your product needs next.

  1. Front-EndDevelopment

    Give your users a fast, intuitive web experience. I build responsive web applications with React, Next.js, and TypeScript, focusing on accessibility and performance. Your team gets a front end that’s easy to maintain and ready to grow with the product.

    • React & Next.js
    • TypeScript
    • design systems
    • accessibility
    • web performance
  2. Back-EndDevelopment

    Keep your product running reliably as your business grows. I develop back-end services, APIs, and integrations with Node.js, Python, and PostgreSQL. You get a clear, maintainable foundation for handling data, connecting tools, and adding new features.

    • Node.js & Python
    • APIs & integrations
    • PostgreSQL
    • architecture
    • cloud & DevOps
  3. MobileDevelopment

    Need your product in your users’ hands wherever they go? I build polished, reliable mobile applications for iOS and Android with React Native, designed to feel at home on each platform and ready to scale from launch onward.

    • React Native
    • iOS & Android
    • cross-platform apps
    • API integrations
    • app store delivery
  4. AI & WorkflowAutomation

    Turn repetitive work into reliable, connected workflows. I design AI-powered automations that link the tools your team already uses, handle routine tasks, and move information where it needs to go. You get practical systems that are clear to maintain and built around your actual processes.

    • AI integrations
    • n8n workflows
    • LLM-powered tools
    • AI Agents
    • RAG
    • AI chat-bots
    • process optimization
  5. SEO & PerformanceOptimization

    Make your website faster and easier to find. I improve technical SEO, Core Web Vitals, and page speed by fixing issues with loading, crawling, and indexing. You get a smoother user experience and a stronger foundation for organic search.

    • technical SEO
    • Core Web Vitals
    • page speed
    • structured data
    • performance audits

Publications

Building digital products means making decisions about code, design, and people every day. I write about what I’ve learned from those decisions, sharing practical insights into software engineering, product development, and team leadership. These publications bring together lessons from real projects and ideas I’m still exploring.Building digital products means making decisions about code, design, and people every day. I write about what I’ve learned from those decisions, sharing practical insights into software engineering, product development, and team leadership. These publications bring together lessons from real projects and ideas I’m still exploring.

✦Notes in progress
✦

The first story is taking shape.

There’s nothing to read here just yet. I’m working on a few ideas worth sharing — check back soon.

New writing, in time.

Get in touch

Currently, based in Lviv, working across Europe and the US. Available for engineering leadership, consulting, and build partnerships.

Time

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  • EmailFor detailed inquiries
  • TelegramFastest way to reach me
  • HIDDENCurrently unavailable
  • HIDDENCurrently unavailable
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