Hi, I'm a developer

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What I work on

AI Systems, Chatbots

Automation

Web Scraping

Cloud Engineering

Software Consultancy

Data Analysis/Engineering

Custom Full Stack Websites

What I've built

Details

Dynamic Pricing API for Revenue Optimization

Developed an API and backtesting framework to evaluate pricing strategies and optimize revenue and transactions.

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Dynamic Pricing API for Revenue Optimization

Built a dynamic pricing API and backtesting framework for a large platform to simulate and test the impact of pricing strategies on transaction volumes and revenue. The system uses an XGBoostRegressor model to predict transaction trends and price-demand relationships based on historical data. While the current implementation applies pre-configured strategies, it serves as a foundation for future advancements, such as real-time optimal price predictions and automated strategy generation.

Tech Stack:

Python
FastApi
XGBoost
Scikitlearn
SciPy
Pandas
NumPy
Pydantic
Docker

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Portfolio

Created a personal website to showcase projects and provide an overview of my expertise.

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Portfolio

Designed and developed a personal portfolio website to highlight my projects, technical skills, and professional background. Built using modern web technologies, the site is fully responsive and optimized for performance.

Tech Stack:

Nextjs
React
Tailwind
Typescript
Vercel

Details

MijnBestemmingsplan.nl

Co-developed www.mijnbestemmingsplan.nl that offers AI-powered insights into building regulations, including a chatbot and PDF report services.

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MijnBestemmingsplan.nl

The platform is aimed at project developers, real estate agents, municipalities, and policy-making organizations to provide insights into building regulations. Developed the chat API and PDF report API to answer queries and generate reports by retrieving official building regulations for a given address. Built and managed Supabase tables and edge functions to store and process data efficiently. Occasionally contributed to the frontend, which includes a login environment with subscription-based access, enabling unlimited use of the chatbot and report services.

Tech Stack:

FastApi
Nextjs
React
Tailwind
SupaBase
Stripe
DigitalOcean
Typescript
OpenAI
Docker

Details

Building a Data Platform on AWS

Co-Developed a data platform, integrating multiple external tools to provide data-driven insights to applications, APIs, and dashboards.

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Building a Data Platform on AWS

Designed and implemented a scalable data platform leveraging various tools to process and integrate data from multiple external sources. The platform provides data-driven insights directly to applications and APIs, in addition to powering Quicksight dashboards for visualization.

Tech Stack:

Redshift
Glue
S3
Quicksight
ECS
SQL
Airflow
Python
DBT
FastApi
Matomo
Docker

Details

A Real Estate Scraper

Automated the extraction of real-time real estate listings matching specific criteria from an external dataset.

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A Real Estate Scraper

Developed a web scraping tool that automatically extracts real estate listings from multiple websites. Implemented data filtering based on specific criteria such as location, price range, and property type. Properties are crossreferenced with an external dataset to filter on specific criteria like the difference between height and allowed height according to regulations.

Tech Stack:

Python
Pandas
VPS

Details

GPS Snapping for Accurate Tram Tracking

Developed a GPS snapping method to map tram positions to rail tracks, improving route accuracy and reducing positional error.

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GPS Snapping for Accurate Tram Tracking

Designed and implemented a GPS snapping system to accurately map tram positions to rail tracks, ensuring precise positional data for correlating with specific environmental measurements such as sound and vibrations. Developed a logical network model combined with a search tree algorithm to evaluate and optimize potential routes. The solution’s improved stability reduced the volume of GPS data required, enabling more effective data aggregation and enhancing visualization performance in the frontend for faster and more efficient rendering of tram routes and associated analytics.

Tech Stack:

Python
Network Modeling
Pathfinding Algorithms
Data Aggregation
Frontend Optimization

About Me

I'm Tim Frohlich, a software developer and technical entrepreneur based in Amsterdam. Holding a degree in Artificial Intelligence from the University of Amsterdam and possessing hands-on experience in multiple startups and scale-ups, I combine technical expertise with a pragmatic approach to develop custom solutions for businesses.

My Expertise

Full-Stack Development: Architecting and building robust web applications and APIs using modern technology stacks to deliver scalable and maintainable solutions.
AI & Machine Learning: Integrating intelligent features into applications, from automated content generation to advanced data analysis.
Data Engineering: Designing and implementing efficient data pipelines and analytics solutions that enable informed decision-making.
Cloud Architecture: Creating resilient and scalable cloud-native systems that support the growth and adaptability of your business.

My Approach

I believe in building solutions that anticipate future growth:

Clean, Maintainable Code: Writing code that is easy to understand, extend, and maintain.
Scalable Architecture: Designing systems that can grow and adapt with your business needs.
Data-Driven Decision Making: Utilizing data insights to inform and guide development strategies.
Clear Communication and Collaboration: Ensuring transparent and effective communication throughout the development process.

Contact Me

Have a question or want to collaborate? Reach out to me!