Federico Ercole
Senior software and product engineer based in Vienna. I own the whole build, from the product decisions down to the cloud it runs on. Real-time AI voice for thousands of live users, 60+ microservices in production, and startups taken from zero to launch.
Work With Me
Fixed scope and a fixed price, both agreed before we start. I take on a small number of projects at a time, so every client gets my full attention and the timelines below are the real ones.
AI Voice Agent PoC
A working voice agent your team can talk to in the browser. I use the same speech-to-text and text-to-speech pipeline I built for a live product with thousands of users.
- Working browser-based voice agent, deployed on a demo URL
- One use case of your choice (support, booking, onboarding, in-product NPC)
- Your own knowledge base wired into the agent
- Latency tuning and provider cost breakdown
- Handover doc + 60 min walkthrough call
Cloud Architecture Review
An independent review of your cloud setup by an engineer who has kept large systems running in production. I find where it breaks under load and where the money is going, then hand you a fix list in priority order. Your team keeps working while I do it.
- Architecture diagram of your current infrastructure
- Written audit: cost, reliability, security, scalability
- Prioritised fix list, each scored by effort vs. impact
- 90 min walkthrough call with your team
Agentic AI Enablement
I get one agent running properly inside your own stack, and leave your team able to build the next one without me. Coding agents, custom skills, MCP tooling, workflow automation.
- One production-ready agent or automation in your stack
- Custom skills, tools and prompt setup, versioned in your repo
- 90 min team enablement session
- Runbook so your team can extend it without me
Business Landing Site
A fast, modern site built to bring your business enquiries. Next.js under the hood, so it loads instantly and search engines index every word of it. You own the code outright, with no platform lock-in and no forced monthly fee. If you prefer to hand it off, I keep it maintained and updated for a competitive monthly rate.
- One-page responsive site, up to 6 sections
- SEO metadata, sitemap, analytics
- Working contact form
- Deployment + your domain connected
- 2 rounds of revisions
Consultancy and existing sites
Already have a website or a system that needs work? I take on consultancy and improvements to what you already run: making an existing site faster, easier to find and easier to use, moving it off a page builder, reviewing a technical decision before you commit to it, or being the senior engineer your team can call. Every case is different, so I quote each one on its own.
Websites You Can Visit
Open them, click around, run them through a speed test. This is what a site from me looks like once it is live.
The site you are reading. Static Next.js, deployed on every push, loads instantly on a phone and is fully indexed by search engines. The same foundation I use for client sites.
Site for an independent commissioning engineer serving industrial clients. Sectors, services, coverage and credentials laid out clearly, with an enquiry form that turns a visitor into a scoped project request. Published in English, Italian and German.
WordPress site for an international campaign to keep handwriting in schools. I set up the site and built the signature system behind it: people sign from anywhere, and the page shows a live count, the number of countries reached and a world map that fills in as new countries sign. Over 1.500 signatures from 49 countries so far, in English and Italian.
Cooking and recipe site built on Italian technique applied to food from anywhere. Recipes browsable by course and by cuisine, with search, filtering and full recipe pages. A content-heavy site that has to stay fast and stay indexed, and I keep it that way.
Official site of a railway culture association in Northern Italy. I built it and I still keep it reliable, usable and up to date, which is exactly the ongoing maintenance I offer with every site I ship.
Want one like these for your business? The package is €1.200.
Selected Work
Live platforms and sites I designed, built and shipped.
xcore.gg
Live platform giving players one gaming identity across Steam, Xbox, PlayStation and more. Built and running on AWS with a Next.js frontend, a Node.js backend and PostgreSQL behind Prisma.
Midnight Heist
Minecraft experience where players hold real conversations with NPCs driven by large language models. I led the end-to-end build across the game, the web app and the real-time voice pipeline, including live transcription and spoken responses.
Picks & Bans
Live draft platform for Age of Empires II team matches, inspired by Dota 2's Captain's Mode. Real-time drafting over server-sent events, OAuth sign-in, match tracking, leaderboards and per-player ranking history.
About Me
I am a senior software and product engineer based in Vienna, Austria. Ten years of full-stack engineering on systems carrying real production traffic, at ImmobilienScout24 and at Hero Journey Club, and as the technical lead who built the cloud infrastructure for a string of European startups.
I work across the frontend, the backend and the cloud with the same depth in each. Real-time AI voice pipelines, agents that do real work, hybrid search, Progressive Web Apps, event-driven systems and serverless architecture on AWS. I design the architecture, write the code and own the result in production.
I am a product engineer as well as a software engineer. I decide what gets built, what gets cut and what ships first, a habit built leading early-stage startups where the specification does not exist yet. xcore.gg, Picks & Bans and Sursk.it are my own products, each taken from an idea and a domain name to a live platform with real users.
I am at my best around other builders. I mentor developers on system design, cloud architecture and AI-native workflows. At hackathons I bring the team spirit that makes a group click, and the prizes that come with it. I also run the digital presence of a cultural association in Northern Italy. I work in English, German and Italian.
Languages
- 🇮🇹 Italian
- 🇬🇧 English
- 🇩🇪 German
- 🇷🇴 Romanian
- 🇫🇷 French
Beyond Code
- ✈️ Travelling
- 🎮 Gaming
- ⚡ Electronics & IoT
- 🏆 Hackathons
- ⚽ Football player
Start a Project
Tell me what you need in a few lines. I reply within a day with a fixed price and a start date.
Happy to have a short call first if you prefer.