Full-Stack Development,
MVPs, SaaS, AI Apps, AI Agents & Automation for Startups
FAST · QUALITY · DIRECT

From idea to live product. 200+ successful launches since 2013. Full-stack engineering: frontend, backend, LLM integration, CI/CD, deployment - principal-level architecture, all by one expert. See real results and 100+ 5-star reviews.

Ship 2-3x Faster

Developer + product owner + designer in one person — no handoffs, no approval chains, no waiting. I've been shipping products at startup speed since 2013, moving 2-3x faster than standard agencies.

Cost SAVINGS

Pay for code, not account managers. One senior expert covers everything — cheaper and faster than assembling a team or hiring an agency. Zero bureaucracy, zero markup.

Trusted by Startups

I've been working for 13+ years with startups from Canada, USA, Europe, and Asia. Projects have raised $60M+ in investments. I launch MVPs/startups in record time with flexible, fast communication and rapid iterations.

Top 0.5% Worldwide

Top 0.5% of freelancers worldwide for startups. 200+ projects, $60M+ in client investments. I know how to build your startup fast so users and investors love it - better than competitors.

Real Results, Real Impact

13 years of proven track record building products that raise millions

200+

Successful Launches

From MVPs to complex SaaS platforms for startups across Canada, USA, Europe, and Asia. Each project built with principal-level architecture, full-stack expertise, and startup speed - delivering real products that users and investors love.

13 Years

Since 2013

Continuous professional development experience shipping products at startup speed. Developer + product owner + designer in one person - no handoffs, no approval chains, moving 2-3x faster than standard agencies.

4,000+

Hours Delivered

Proven track record of high-quality professional work. Zero bureaucracy, zero markup - pay for code, not account managers. Flexible, fast communication with rapid iterations that keep your startup moving forward.

Top 0.5%

Worldwide Elite

Top 0.5% of freelancers worldwide for startups. Elite-level full-stack engineering covering frontend, backend, LLM integration, CI/CD, and deployment — all by one expert who knows how to build better than competitors.

100%

On-Time Delivery

All projects delivered on time, every single one. I launch MVPs and startups in record time with no delays. When you need to ship fast and validate your idea quickly, deadline compliance is non-negotiable.

$60M+

Client Investments

Projects I've built have raised over $60M+ in investments. This proves the products work, investors believe in them, and users love them. Your success is my success - I build products that attract funding and grow businesses.

Reviews

Featured testimonials from satisfied clients who have experienced exceptional results working with me on their web development projects

0 / 0

Thentia Corporate Website

“I'll tighten this further by removing some redundancies while keeping the core message:
It is my great pleasure to recommend Fedir Kopakov for any software engineering position, particularly those focused on frontend development. I've had the privilege of working with Fedir during extraordinary circumstances that highlighted not just his technical excellence, but his remarkable resilience and dedication to craft.
Fedir possesses that rare combination of skills that makes him a complete frontend engineer - he seamlessly bridges the gap between design sensibility and technical implementation. While many developers excel at either the visual or technical aspects of frontend work, Fedir demonstrates mastery across the full spectrum. His deep understanding of UI/UX principles isn't just theoretical; he consistently translates that knowledge into elegant, intuitive interfaces that delight users while maintaining clean, maintainable code.
What truly sets Fedir apart is his ability to deliver exceptional work under the most challenging circumstances imaginable. While his homeland of Ukraine was under attack, with bombs literally falling nearby, Fedir remained focused and continued to produce outstanding code. This level of dedication and mental fortitude speaks volumes about his character and work ethic.
Technically, Fedir is nothing short of a wizard with JavaScript. His command of modern frameworks and build tools is comprehensive, but more importantly, he possesses a deep understanding of core JavaScript principles that allows him to solve complex problems elegantly. His code isn't just functional - it's thoughtfully architected, well-documented, and built with maintenance and scalability in mind.
What particularly impresses me about Fedir's work is his attention to the finer details of frontend development. His CSS implementations are masterful, creating responsive, accessible interfaces that work flawlessly across devices and browsers. His HTML is semantic and accessibility-focused, showing his commitment to creating truly inclusive web applications. This holistic approach to frontend development - combining technical excellence with user-centered design principles - is increasingly valuable.
Beyond his technical capabilities, Fedir is an exceptional team member. His communication is clear and thoughtful, and he has a talent for explaining complex technical concepts in accessible terms. He actively contributes to code reviews, providing insightful feedback that helps elevate the entire team's work.
In conclusion, I give Fedir my highest recommendation. His unique combination of technical expertise, design sensibility, and unwavering work ethic - demonstrated under the most challenging circumstances - make him an extraordinary candidate. Any organization would be fortunate to have him on their team. His ability to deliver outstanding work while maintaining high standards, even in a crisis, speaks to both his professional capabilities and character.”
Julian C.
Thentia
Canada

Thentia Cloud v2

“I'll tighten this further by removing some redundancies while keeping the core message:
It is my great pleasure to recommend Fedir Kopakov for any software engineering position, particularly those focused on frontend development. I've had the privilege of working with Fedir during extraordinary circumstances that highlighted not just his technical excellence, but his remarkable resilience and dedication to craft.
Fedir possesses that rare combination of skills that makes him a complete frontend engineer - he seamlessly bridges the gap between design sensibility and technical implementation. While many developers excel at either the visual or technical aspects of frontend work, Fedir demonstrates mastery across the full spectrum. His deep understanding of UI/UX principles isn't just theoretical; he consistently translates that knowledge into elegant, intuitive interfaces that delight users while maintaining clean, maintainable code.
What truly sets Fedir apart is his ability to deliver exceptional work under the most challenging circumstances imaginable. While his homeland of Ukraine was under attack, with bombs literally falling nearby, Fedir remained focused and continued to produce outstanding code. This level of dedication and mental fortitude speaks volumes about his character and work ethic.
Technically, Fedir is nothing short of a wizard with JavaScript. His command of modern frameworks and build tools is comprehensive, but more importantly, he possesses a deep understanding of core JavaScript principles that allows him to solve complex problems elegantly. His code isn't just functional - it's thoughtfully architected, well-documented, and built with maintenance and scalability in mind.
What particularly impresses me about Fedir's work is his attention to the finer details of frontend development. His CSS implementations are masterful, creating responsive, accessible interfaces that work flawlessly across devices and browsers. His HTML is semantic and accessibility-focused, showing his commitment to creating truly inclusive web applications. This holistic approach to frontend development - combining technical excellence with user-centered design principles - is increasingly valuable.
Beyond his technical capabilities, Fedir is an exceptional team member. His communication is clear and thoughtful, and he has a talent for explaining complex technical concepts in accessible terms. He actively contributes to code reviews, providing insightful feedback that helps elevate the entire team's work.
In conclusion, I give Fedir my highest recommendation. His unique combination of technical expertise, design sensibility, and unwavering work ethic - demonstrated under the most challenging circumstances - make him an extraordinary candidate. Any organization would be fortunate to have him on their team. His ability to deliver outstanding work while maintaining high standards, even in a crisis, speaks to both his professional capabilities and character.”
Julian C.
Thentia
Canada

Thentia Ascend Blog

“I'll tighten this further by removing some redundancies while keeping the core message:
It is my great pleasure to recommend Fedir Kopakov for any software engineering position, particularly those focused on frontend development. I've had the privilege of working with Fedir during extraordinary circumstances that highlighted not just his technical excellence, but his remarkable resilience and dedication to craft.
Fedir possesses that rare combination of skills that makes him a complete frontend engineer - he seamlessly bridges the gap between design sensibility and technical implementation. While many developers excel at either the visual or technical aspects of frontend work, Fedir demonstrates mastery across the full spectrum. His deep understanding of UI/UX principles isn't just theoretical; he consistently translates that knowledge into elegant, intuitive interfaces that delight users while maintaining clean, maintainable code.
What truly sets Fedir apart is his ability to deliver exceptional work under the most challenging circumstances imaginable. While his homeland of Ukraine was under attack, with bombs literally falling nearby, Fedir remained focused and continued to produce outstanding code. This level of dedication and mental fortitude speaks volumes about his character and work ethic.
Technically, Fedir is nothing short of a wizard with JavaScript. His command of modern frameworks and build tools is comprehensive, but more importantly, he possesses a deep understanding of core JavaScript principles that allows him to solve complex problems elegantly. His code isn't just functional - it's thoughtfully architected, well-documented, and built with maintenance and scalability in mind.
What particularly impresses me about Fedir's work is his attention to the finer details of frontend development. His CSS implementations are masterful, creating responsive, accessible interfaces that work flawlessly across devices and browsers. His HTML is semantic and accessibility-focused, showing his commitment to creating truly inclusive web applications. This holistic approach to frontend development - combining technical excellence with user-centered design principles - is increasingly valuable.
Beyond his technical capabilities, Fedir is an exceptional team member. His communication is clear and thoughtful, and he has a talent for explaining complex technical concepts in accessible terms. He actively contributes to code reviews, providing insightful feedback that helps elevate the entire team's work.
In conclusion, I give Fedir my highest recommendation. His unique combination of technical expertise, design sensibility, and unwavering work ethic - demonstrated under the most challenging circumstances - make him an extraordinary candidate. Any organization would be fortunate to have him on their team. His ability to deliver outstanding work while maintaining high standards, even in a crisis, speaks to both his professional capabilities and character.”
Julian C.
Thentia
Canada

Thentia Cloud v1

“I'll tighten this further by removing some redundancies while keeping the core message:
It is my great pleasure to recommend Fedir Kopakov for any software engineering position, particularly those focused on frontend development. I've had the privilege of working with Fedir during extraordinary circumstances that highlighted not just his technical excellence, but his remarkable resilience and dedication to craft.
Fedir possesses that rare combination of skills that makes him a complete frontend engineer - he seamlessly bridges the gap between design sensibility and technical implementation. While many developers excel at either the visual or technical aspects of frontend work, Fedir demonstrates mastery across the full spectrum. His deep understanding of UI/UX principles isn't just theoretical; he consistently translates that knowledge into elegant, intuitive interfaces that delight users while maintaining clean, maintainable code.
What truly sets Fedir apart is his ability to deliver exceptional work under the most challenging circumstances imaginable. While his homeland of Ukraine was under attack, with bombs literally falling nearby, Fedir remained focused and continued to produce outstanding code. This level of dedication and mental fortitude speaks volumes about his character and work ethic.
Technically, Fedir is nothing short of a wizard with JavaScript. His command of modern frameworks and build tools is comprehensive, but more importantly, he possesses a deep understanding of core JavaScript principles that allows him to solve complex problems elegantly. His code isn't just functional - it's thoughtfully architected, well-documented, and built with maintenance and scalability in mind.
What particularly impresses me about Fedir's work is his attention to the finer details of frontend development. His CSS implementations are masterful, creating responsive, accessible interfaces that work flawlessly across devices and browsers. His HTML is semantic and accessibility-focused, showing his commitment to creating truly inclusive web applications. This holistic approach to frontend development - combining technical excellence with user-centered design principles - is increasingly valuable.
Beyond his technical capabilities, Fedir is an exceptional team member. His communication is clear and thoughtful, and he has a talent for explaining complex technical concepts in accessible terms. He actively contributes to code reviews, providing insightful feedback that helps elevate the entire team's work.
In conclusion, I give Fedir my highest recommendation. His unique combination of technical expertise, design sensibility, and unwavering work ethic - demonstrated under the most challenging circumstances - make him an extraordinary candidate. Any organization would be fortunate to have him on their team. His ability to deliver outstanding work while maintaining high standards, even in a crisis, speaks to both his professional capabilities and character.”
Julian C.
Thentia
Canada

Thentia Cloud v0

“I'll tighten this further by removing some redundancies while keeping the core message:
It is my great pleasure to recommend Fedir Kopakov for any software engineering position, particularly those focused on frontend development. I've had the privilege of working with Fedir during extraordinary circumstances that highlighted not just his technical excellence, but his remarkable resilience and dedication to craft.
Fedir possesses that rare combination of skills that makes him a complete frontend engineer - he seamlessly bridges the gap between design sensibility and technical implementation. While many developers excel at either the visual or technical aspects of frontend work, Fedir demonstrates mastery across the full spectrum. His deep understanding of UI/UX principles isn't just theoretical; he consistently translates that knowledge into elegant, intuitive interfaces that delight users while maintaining clean, maintainable code.
What truly sets Fedir apart is his ability to deliver exceptional work under the most challenging circumstances imaginable. While his homeland of Ukraine was under attack, with bombs literally falling nearby, Fedir remained focused and continued to produce outstanding code. This level of dedication and mental fortitude speaks volumes about his character and work ethic.
Technically, Fedir is nothing short of a wizard with JavaScript. His command of modern frameworks and build tools is comprehensive, but more importantly, he possesses a deep understanding of core JavaScript principles that allows him to solve complex problems elegantly. His code isn't just functional - it's thoughtfully architected, well-documented, and built with maintenance and scalability in mind.
What particularly impresses me about Fedir's work is his attention to the finer details of frontend development. His CSS implementations are masterful, creating responsive, accessible interfaces that work flawlessly across devices and browsers. His HTML is semantic and accessibility-focused, showing his commitment to creating truly inclusive web applications. This holistic approach to frontend development - combining technical excellence with user-centered design principles - is increasingly valuable.
Beyond his technical capabilities, Fedir is an exceptional team member. His communication is clear and thoughtful, and he has a talent for explaining complex technical concepts in accessible terms. He actively contributes to code reviews, providing insightful feedback that helps elevate the entire team's work.
In conclusion, I give Fedir my highest recommendation. His unique combination of technical expertise, design sensibility, and unwavering work ethic - demonstrated under the most challenging circumstances - make him an extraordinary candidate. Any organization would be fortunate to have him on their team. His ability to deliver outstanding work while maintaining high standards, even in a crisis, speaks to both his professional capabilities and character.”
Julian C.
Thentia
Canada

Developer to convert Zeplin designs in to Responsive CSS/HTML with SASS and Bootstrap 4.3.1

“I'll tighten this further by removing some redundancies while keeping the core message:
It is my great pleasure to recommend Fedir Kopakov for any software engineering position, particularly those focused on frontend development. I've had the privilege of working with Fedir during extraordinary circumstances that highlighted not just his technical excellence, but his remarkable resilience and dedication to craft.
Fedir possesses that rare combination of skills that makes him a complete frontend engineer - he seamlessly bridges the gap between design sensibility and technical implementation. While many developers excel at either the visual or technical aspects of frontend work, Fedir demonstrates mastery across the full spectrum. His deep understanding of UI/UX principles isn't just theoretical; he consistently translates that knowledge into elegant, intuitive interfaces that delight users while maintaining clean, maintainable code.
What truly sets Fedir apart is his ability to deliver exceptional work under the most challenging circumstances imaginable. While his homeland of Ukraine was under attack, with bombs literally falling nearby, Fedir remained focused and continued to produce outstanding code. This level of dedication and mental fortitude speaks volumes about his character and work ethic.
Technically, Fedir is nothing short of a wizard with JavaScript. His command of modern frameworks and build tools is comprehensive, but more importantly, he possesses a deep understanding of core JavaScript principles that allows him to solve complex problems elegantly. His code isn't just functional - it's thoughtfully architected, well-documented, and built with maintenance and scalability in mind.
What particularly impresses me about Fedir's work is his attention to the finer details of frontend development. His CSS implementations are masterful, creating responsive, accessible interfaces that work flawlessly across devices and browsers. His HTML is semantic and accessibility-focused, showing his commitment to creating truly inclusive web applications. This holistic approach to frontend development - combining technical excellence with user-centered design principles - is increasingly valuable.
Beyond his technical capabilities, Fedir is an exceptional team member. His communication is clear and thoughtful, and he has a talent for explaining complex technical concepts in accessible terms. He actively contributes to code reviews, providing insightful feedback that helps elevate the entire team's work.
In conclusion, I give Fedir my highest recommendation. His unique combination of technical expertise, design sensibility, and unwavering work ethic - demonstrated under the most challenging circumstances - make him an extraordinary candidate. Any organization would be fortunate to have him on their team. His ability to deliver outstanding work while maintaining high standards, even in a crisis, speaks to both his professional capabilities and character.”
Julian C.
Thentia
Canada

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