Frontend
Creating fast, responsive interfaces with reusable components and modern CSS workflows.
React
Vue
TypeScript
JavaScript
Tailwind
HTML/CSS
Karl Oskar Anderson
I build the web at Estravel;
from client-facing services to
internal offer creation engines
Skills
Backend
Adapting backend solutions to the problem - using WordPress for CMS, Laravel for applications, Python for data-driven tasks and .NET for business logic.
PHP
Laravel
Python
FastAPI
MySQL
WordPress
RabbitMQ
SSO
REST API
Tools
Turning "it works on my machine" into "it works everywhere".
Git (GitHub, GitLab)
Docker
WSL
Postman
Swagger
Projects
Estravel Fullstack developer (JUNE 2026 - present)
Estravel Metasearch
- Built offer composition workspace for ~200 consultants across EE/LV/LT that unifies 4 distinct data sources - supplier APIs (tours), PNR translation (flights), AI text/image parsing (hotel) and AI agents (portal-only services: rail, ferry, cruise, car rental)
- Unified the consultant's daily toolkit into one workspace: CRM client lookup, offer search, hotel TripAdvisor/Booking ratings, pricing engine and Gmail integration
- Ensured consistent offer design - replacing ad-hoc partner portal screenshots with offer templates and a block-based offer editor
- Python
- FastAPI
- RabbitMQ/Celery
- React
- PHP
- MySQL
Estravel web developer (NOV 2023 - JUNE 2026)
Estravel booking platforms
- Took ownership of online B2C booking platforms, overseeing functionality and design for ~€300k in monthly sales
- Decoupled five legacy web applications into self-contained, themeable plugins with dedicated admin interfaces
- Led company-wide migration from Thunderbird to Gmail, developed custom Chrome email manager client
- PHP
- Vue
- React
- WordPress
- MySQL
TalTech Fullstack developer intern 2023
Charon
Charon is a Moodle plugin for programming assigments used by 1000 students every semester. It allows teachers to track student coding submissions, manage grading and provide feedback. I worked in an agile team at TalTech to improve plugin functionality.
- Laravel
- PHP
- Vue
- MariaDB
Bachelor's degree thesis 2023
HedgehogDBD
Developed a open source web app for visualizing databases as ERD schemas to help fellow students in Database Basics (ICA0005) course.
- React
- TypeScript
Sirowa Fullstack developer intern 2021
Tempsens
Developed a full stack warehouse temperature and humidity monitoring system. Implemented SOAP and REST APIs for backend and chart visualization for frontend. Implemented binning and clustering algorithms for data visualization and alert observation.
- PHP
- SlimPHP
- JS
- Bootstrap
- MySQL
Maanteeamet Timescanner
Developed a web scraper for getting info from Maanteeamet e-service about available driving exam times.
- Python
- Selenium
People are saying
0103
Iran war evacuation
"Karl Oskar and Sirje quickly built a working web solution and kept their hands on the technical side of things throughout the process. I don't think Karl Oskar ever went to sleep. [...] We can confidently say that our team, together with the Ministry of Foreign Affairs team, did world-class work."