Custom apps and business software
Web and mobile applications, internal tools, CRM and ERP systems built around how your business works.
Custom App & MVP DevelopmentFreelance software developer · Barcelona · Remote
Freelance developer in Barcelona,working with you remotely.
I’m Artur Puig, a freelance software developer in Barcelona. Since 2016 I have built custom applications, websites and business automations for companies in Spain and abroad, always remotely. Alongside that I lead research and development at GoAnswers and Wallner Group, after heading IT at Grupo Adgest. You talk directly with me, no intermediaries.
Free consultation and basic demo.
We agree what the demo will show. No obligation to hire; the full build is quoted separately.
Free · 30 min · Google Meet · You talk directly with me
- Based in
- Barcelona, Spain
- Delivery
- Remote, wherever you are
- Languages
- Spanish · Catalan · English · German
- Freelance since
- 2016
- Time zone
- Central European Time
What I do as a freelance developer
Websites that bring in enquiries
Business websites and landing pages with clear content, fast loading and solid technical SEO.
Custom Website Design & DevelopmentAutomation of administrative work
RPA, integrations and AI agents that take over repetitive tasks, with checks where a person should decide.
Business Process AutomationResearch, robotics and electronics
R&D leadership, connected devices and robotics projects. Useful when your idea crosses the line between software and hardware.
How working remotely with me looks
To start, tell me what you want to build or improve and how you work today. You don’t need a technical brief.
- 01
A first conversation
A free 30-minute video call or a short message. We clarify the idea and decide whether a basic demo makes sense.
- 02
Clear scope, in writing
Before paid work starts you know what is included, what it costs and roughly how long it takes.
- 03
Visible progress
You see working versions as we go and test them yourself. Questions are answered by the person writing the code.
- 04
Delivery and handover
I deploy, document and explain the result, and we agree what support you need afterwards.
05 /Selected experience
Where the work has happened
Four roles, one throughline: research turned into systems that run.
-
Jun 2016 — Present Freelance · Remote
IndependentSoftware Engineer
Custom software, agentic systems, automation and projects that connect software with electronics. I work freelance and keep building personal projects out of curiosity, from robotics to security tools.
-
Aug 2026 — Present Remote
GoAnswersDirector of Research & DevelopmentResearch and development in applied AI, and how the latest advances hold up inside enterprise environments.
-
Mar 2023 — Present Remote
Wallner GroupDirector of Research & DevelopmentCombining AI and RPA to automate complex administrative work, building CRM/ERP systems, and exploring blockchain among other technologies.
-
Jan 2021 — Mar 2023 Full-time · Remote
Grupo AdgestHead of IT DepartmentLed the IT function and applied RPA with UiPath to administrative processes.
Capabilities
- Enterprise AI & agent systems
- Automation & RPA (UiPath)
- Custom CRM/ERP and business systems
- Reverse engineering (OllyDbg)
- Security tooling & pentesting (Metasploit)
- Embedded & IoT (Arduino, Home Assistant)
- ROS2 robotics
- C# · Java · Python
- Systems architecture
- Blockchain
- ESP32 · ESP8266 · IoT
- Bug bounty
- SEO & GEO: search and AI visibility
LET'S TALK
Let’s discuss your project.
A LITTLE HELP GETTING STARTED
A clearer idea. A better first meeting.
Tell me what you want to build or improve. I’ll help you put together a short brief for Artur.
A FREE FIRST CONVERSATION
Book a free consultation.
A 30-minute video call to discuss your idea or a problem you want to solve. If a basic demo would help, we can agree what it should show.
Free · 30 min · Google Meet
Book a free consultationLet’s talk about your project
Write to me here.
Prefer to write? Send a brief summary and I’ll reply by email.
Your message comes straight to me. No newsletter, no sales calls.
Connect on LinkedIn ↗
Based in Barcelona · Working remotely
Questions before we start
Guides
Do you only work with companies in Barcelona?
No. I live in Barcelona and work remotely: a company in Madrid, Valencia, Berlin or Zurich gets the same service as one around the corner.
How does a remote project work?
Everything at a distance: the first conversation, the demos and the delivery. Video calls, shared documents and test versions.
What do you need from me to start?
A description, in your own words, of what you want to build or improve. No technical brief, no wireframes. If you use particular tools, tell me which.
Which languages do you work in?
Spanish and Catalan. In English and German I understand everything and work in writing without difficulty; I have delivered projects for clients in both languages. Spoken, they come less naturally, so day to day works best through messages and documentation, with short video calls when needed.
How do you charge?
The first conversation and an agreed basic demo are free. The full project is quoted in writing, with no obligation to continue.
What kind of projects fit best?
Custom applications, business websites and automation of administrative processes, for small and medium businesses, professionals and new products. Projects that combine software and hardware too.