Vasilije Repović
Full-Stack Dev. & Founder
Building modern, scalable, and unique software solutions from idea to launch.
Vasilije Repović
Full-Stack Dev. & Founder
Upwork Top Rated (Top 10%, 100% JSS)
About Me
Let's Get Introduced.
👋 Hi, I'm Vasilije Repović - a Full-Stack Developer & Founder building Softalon (an all-in-one salon management SaaS). With 5+ years of hands-on experience - starting long before the current AI wave - I transform complex business ideas into high-performing software solutions.
What I bring to your project:
- •Architecture & System Design: Share your project idea or business vision, and I’ll design the full technical roadmap, scalable architecture, and optimal tech stack.
- •End-to-End Execution: Seamless front-end UI/UX using React and Next.js paired with secure, robust backends built with NestJS and relational/NoSQL databases.
- •API Integrations & Custom AI: Deep expertise integrating complex third-party APIs (official Meta Tech Provider), custom AI pipelines, and event-driven/real-time messaging systems.
- •Proactive Technical Guidance: Active collaboration where I offer strategic feedback, catch edge cases early, and suggest technical improvements to help your product grow faster and cost less to maintain.
As a founder, I treat your product and codebase with the same ownership, speed, and engineering discipline as my own.
Services
What I Can Do For Your Business
End-to-end full-stack software development, custom SaaS platforms, and cloud architecture built to scale.
Frontend & UI/UX
Building fast, responsive, and pixel-perfect user interfaces with modern reactive frameworks and design systems.
Backend & APIs
Architecting secure REST & GraphQL endpoints, authentication systems, and background job processing.
Databases & Storage
Designing structured relational schemas, high-speed caching layers, and optimized database queries.
DevOps & Cloud Hosting
Automating CI/CD deployment pipelines, containerized server infrastructure, and zero-downtime hosting.
Desktop & Mobile Apps
Extending digital products to Desktop (Windows, macOS) and Mobile (iOS, Android) platforms with shared logic.
Works
What I Have Built So Far
Project details are kept confidential to protect client privacy.
Integrations & APIs
What I Can Connect Your App With
Payment gateways, AI models, third-party APIs, or custom webhooks — integrated reliably with zero friction.
Billing & Payment Gateways
End-to-end checkout flows, recurring subscriptions, invoice webhooks, and multi-processor setups.
AI & LLM Model Gateways
Function calling, embeddings, streaming responses, agent workflows, and multi-provider fallback layers.
Custom APIs & Anything Else
Give me the API docs, and I'll connect it. Custom REST, GraphQL, Webhooks, or MQTT protocols with idempotent sync.
Testimonials
Why Clients Choose Me?
Real feedback from clients who worked with me.
Upwork Client"Exceptional Engineer & Creative Strategist"
"Working with Vasilije has been one of the best experiences I've had hiring on Upwork. As a founder, one of the biggest challenges is finding someone who can truly understand your vision and bring your ideas to life. Vasi did exactly that. He wasn't just an exceptional engineer - he also thought like a creative strategist. Time and time again, he suggested improvements and caught opportunities that I overlooked, even with over a decade of experience in CRO and digital strategy. It genuinely felt like he cared about the success of my project as much as I did. Communication was excellent, deadlines were consistently met (and often exceeded), and he was incredibly patient throughout the entire development process as ideas evolved. Every feature I envisioned was executed with precision, and the value he delivered far exceeded what I paid. If you're looking for someone who can combine technical expertise with strategic thinking and genuinely invest in your project's success, I couldn't recommend Vasi more highly. I'll absolutely be working with him again."
Jacoby M.
🇺🇸MantraPerform
Upwork Client"The Brilliant Mind Behind My Project"
"Vasilije did a brilliant job! I spent a whole year trying to find someone to help me build this project. Vasilije did it in a matter of 2-3 days - had I known it was this easy, I would've done it sooner. Great communication, open, honest, and transparent. He gives the guidance you need and is super efficient, diligent, and responsive. I can't recommend this guy enough for any project, small or large. My only gripe is that after this review, he will become more popular because his work is so good, and I won't be able to use his services in the future! His skill level is level 10+. Honestly, I'm so amazed and impressed - not a fake review at all. No one understands how valuable this guy is. I reckon he can build anything... just a matter of time, like he says. I had a web redirection service that might've involved some monthly costs. Vasilije gave me cheap and expensive options, catering to my brief requirements, and delivered on the cost-effective end. I showed him some wireframes and gave a few paragraphs; he had some questions but basically knew how to build exactly what I wanted. Not many intelligent people out there as I had pitched the idea to countless people, and Vasilije managed to soak up the business end, architecture, and cloud end all into his skillset. He made a project that would've taken years happen in seconds."
Ken P.
🇦🇺Shock Market
Upwork Client"Proactive & High-Quality Node.js Developer"
"Vasilije has been an absolute pleasure to work with on our Node.js backend development project. Their expertise, professionalism, and proactive communication made the collaboration seamless and productive. They consistently delivered high-quality code and solutions that exceeded our expectations. I was particularly impressed by their ability to quickly grasp complex concepts and offer innovative solutions to challenges. Their reliability and responsiveness ensured that the project was completed on time and to our satisfaction. Vasilije is not just a typical coder. He will actually think about the workflow and discuss the workflow with you to understand the business logic. At the same time, he is very open to suggestions on how things should be done. He is a very fast learner and has done a great, great job for our project. I highly recommend Vasilije to anyone seeking a skilled and dedicated developer. Thank you for your exceptional work!"
Anne K.
🇺🇸DenovoLab
Upwork Client"Focused and Knowledgeable Developer"
"This young developer, Vasilije, impressed me with his exceptional focus and deep knowledge of the skillset required for my project. He not only understood the technical aspects but also provided valuable and insightful suggestions that greatly enhanced the tasks at hand. Throughout the entire collaboration, communication with Vasilije flowed seamlessly. What truly amazed me was that everything he delivered surpassed my expectations, and he did so well before the due date. I highly recommend Vasilije for any project. His commitment to excellence and ability to deliver outstanding results make him a valuable asset."
Reinaldo S.
🇧🇷RB Moreira
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