What I can build for you
I work across the whole product lifecycle: from deciding how the data is modelled to leaving the application running in production. These are the four areas most of my projects fall into.
Full stack developer in Belgrade
I'm Edney Hernández and I've spent 9+ years building web and mobile applications end to end. I'm based in Belgrade and work both with Serbian companies and with international clients remotely. If you need custom software — not a template — this is what I do.
Web platforms and SaaS
Custom business applications with Laravel and Node.js: admin dashboards, subscription systems, private areas and APIs.
Mobile applications
Cross-platform apps with Flutter — one codebase for Android and iOS, store publishing included.
AI integrations
Chatbots, document processing with language models, and n8n automations wired into the systems you already run.
Integrations and APIs
Connecting your product to third-party services: payment gateways, carriers, ERPs or any API you need to consume.
Why work with a developer in Belgrade
Serbia has become one of Eastern Europe's reference software development hubs, and for good reason: solid technical talent at a noticeably lower cost than Western Europe. Belgrade sits in UTC+1 — the same zone as Madrid, Paris, Berlin or Rome — so working with me involves no scheduling gymnastics if your company is in Europe. For Latin America and the US East Coast, my mornings overlap with the start of your working day.
Unlike an agency, there are no layers in between: you talk directly to the person writing the code. That means quotes without overhead margins, and technical decisions explained in plain language rather than jargon.
How I work
- Understand first, quote second. An initial no-obligation conversation to work out which problem actually needs solving — often not the one stated at the start.
- Scope fixed in writing. What's included, what isn't, and on what timeline, before a line of code is written.
- Incremental delivery. You see working progress during the project, not a big bang at the end when it's too late to change anything.
- You own the code. The repository is yours. No forced dependencies, no holding the project hostage.
Recent projects
The best way to judge a developer is to see what they've built and why they made each decision. Here are some detailed case studies:
Frequently asked questions
Do you work on-site in Belgrade or remotely?
Both. I live in Belgrade, so for companies in the city we can meet in person to kick off the project. Most of my work is done remotely, with clients across different time zones.
What kind of projects do you build?
Custom web applications and SaaS platforms, cross-platform mobile apps with Flutter, third-party API integrations, and AI automation such as chatbots or document processing with language models.
How much does a custom application cost?
It depends entirely on scope, so be wary of anyone quoting a figure before hearing you out. My approach is an initial no-obligation conversation to understand what you need, followed by a proposal with fixed scope and budget.
Which languages do you work in?
I work in English and Spanish, both in meetings and in the project's technical documentation.
Do you work with companies outside Serbia?
Yes. A good share of my projects are for international clients. I'm in the UTC+1 time zone, which overlaps well with all of Europe and with mornings in the Americas.
Tell me what you need
Send me a description of your project, however brief. You'll get an honest assessment of whether I can help and what it would take to get it done.