ollidev.com

The
engineer

you're looking for

I help you take steps from 0 to 1 (Idea to Product) whether it's building prototype, coding minimum viable product or running a social media campaign. Let's have a chat?

Olli's profile

Olli Hämäläinen

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Services that I offer

I offer a range of services including proof of concept testing, prototype development, minimum viable product (MVP) creation, and social media marketing. My expertise extends beyond these core offerings to help bring your ideas to life.

Minimum viable product (MVP)

You have a rough MVP (Minimum Viable Product) built with Lovable, AI tools e.g. OpenAI customGPT or other tools. I can help you to build a minimum viable product so you can sell and test it with real users.

Outcome from the service:

Includes a launch-ready product with core features, user testing, and iteration based on early feedback. First iteration is done usually in days. Contant communication and iterations are included. Depending on needs includes deployment to environment and tests.

Price:7500 €

Prototype

You have a business idea but you don't know how to build it. I can build a prototype for you so you can test it yourself or with few test users.

Outcome from the service:

Includes a functional prototype you can use and demo. Constant communication on progress and actionable next steps included. First iteration is done in day or two.

Price:3750 €

Proof of concept

You have thought about technology for your business idea but haven't tested it yet. Proof of Concept testing reveals details you never might have thought of.

Outcome from the service:

Includes one clear technical implementation that demonstrates feasibility. Example: Testing out voice based AI for your business idea.

Price:1500 €

Social Media Marketing

You might have already MVP or early phase product with real users. You want to have more real test users. Social media marketing is one of the easiest ways to do that.

Outcome from the service:

Includes campaign planning, execution, and analytics — tailored to your goals and budget. Example: Meta ads for your product with clear structure and clear goals. Creative work not included by default.

Price:From 1000 €
Contact Olli for detailed quote →
Schedule Meeting

First discussion is free

*Note: Prices are negotiated for every project and depend on the complexity and duration of the project. Please contact me for a detailed quote. VAT not included.

Experience - About Me

I'm a full-stack developer with a passion for building usable and nice looking UIs quickly. I use AI tools both in apps (through OpenAI API) but also to speed up development (Cursor).


I have over 10 years of experience across product development, software engineering, and customer-facing roles. I've built proof of concepts, developed prototypes, and turned early demos into fully functional MVPs ready for real user testing.

Before freelancing, I worked nearly a decade in a fast-growing tech company, Smartly.io, where I led global support team, built product features, and managed performance marketing campaigns for global advertisers. This background gives me a strong mix of technical skill and product thinking, especially in early-stage environments.


Technologies/Buzzwords I work with: React, Next.js, TypeScript, Node.js, Tailwind CSS, Shadcn, PostgreSQL, Git, GitHub, Grafana, Kibana, Python, FastAPI, Render, Vercel, OpenAI API, Cursor, Claude Sonnet, Google Gemini, ... and more.

Customers say:

"Olli was able to help me build a prototype further and learn in the process. That was exactly what I needed."

Large testimonial
Mika  / CEO at StratXcel.tech

"Olli's proof-of-concept for our AI report generation, including a compelling sales demo video, was key to rapidly acquiring initial test customers and validating our product direction."

Kristian testimonial
Kristian / CEO at Työpaikkaselvitys.fi

Contact

Let's have a chat? Schedule a meeting. You can also find me on LinkedIn or email me.

Email: olli@ollidev.com
Schedule Meeting

...first discussion is free