Katerina Siljak
YOUR RIGHT HAND FOR BUSINESS GROWTH
Executive Assistant & Project Manager who turns "we should do this" into "here's how we're doing it, step by step, with deadlines."
Executive Assistant Services
I handle the daily admin work that keeps businesses running, but nobody has time to do it.
Google Drive organization & SOPs
Calendar & inbox management
External coordination (designers, developers, freelancers)
Blog content, SEO & email marketing
Leveraging AI tools (Claude, ChatGPT, Gemini) for enhanced productivity & precision
Deliverables & deadline tracking
Website maintenance, updates & SEO optimization
Fast, professional Carrd landing page creation
Project Manager Services
I coordinate projects from kickoff to delivery in SaaS, tech and digital marketing environments.
Project coordination (ClickUp, Asana, Bitrix24, Notion, Slack...)
Technical team & client communication
Timeline management & blocker resolution
Requirements clarification
Early problem detection
Resource & tool optimization
Sprint planning & agile workflow management
Stakeholder reporting & project documentation
Property Management Services
I manage vacation rentals on Airbnb and Booking.com, and provide consulting support for real estate agencies.
Guest communication (inquiry to checkout)
Dynamic pricing & calendar synchronization
Professional listing optimization & copywriting
Cleaner & maintenance coordination
24/7 issue resolution & review management
Real estate agency consulting (market analysis, training, owner onboarding)
Portfolio performance reporting & optimization recommendations
10+ years personal rental experience in Croatia
Hi, I'm Katerina
A lawyer who decided courtrooms were too boring and became a professional chaos organizer instead.
I studied law at the University of Rijeka in Croatia, including a semester in Genova, Italy, then worked at a fancy law firm before realizing my skills were better suited elsewhere. The organizational thinking from law turned out to be exactly what I needed for keeping businesses on track.For more than five years now, I work as an Executive Assistant and Project Manager for SaaS companies and digital agencies. I help founders stay on top of operations, coordinate projects from kickoff to delivery, and turn big ideas into concrete action plans. I also manage short-term vacation rentals on Airbnb and Booking.com and consult with real estate agencies on rental strategies.My work includes managing calendars and inboxes, writing SOPs, coordinating teams across time zones, handling guest communications and stakeholder reporting, and making sure everything actually gets done.When I'm not working, I'm usually hiking Croatian mountains with my Hungarian Vizsla, Zika, or taking care of my plant collection (my balcony looks like a small jungle!).Fun fact: I can't stand clutter. Seriously, messy Google Drives drive me crazy. So, if you hire me, your files will be organized within 48 hours whether you asked for it or not!I speak fluent English and Italian and I'm based in Zagreb, Croatia, collaborating with clients internationally across flexible time zones.
CLIENT TESTIMONIALS
I stick with my clients, and they stick with me.
"Having worked closely with Katerina for several years, I can attest to her remarkable proficiency across a spectrum of roles within our company. From sales and marketing to customer success and content creation, Katerina consistently showcased her diverse skill set, proving herself to be a true asset to our team. Katerina's reliability and credibility are impressive. She has a talent for delivering quality work promptly, never missing a deadline. Her dedication to precision and her commitment to excellence are visible in everything she does. Beyond her professional strengths, Katerina is known for her ability to connect with others. She approaches interactions with authenticity and empathy, fostering trust and collaboration among clients and colleagues alike."
Yuval S.
CEO & Co-Founder at MiniHotel (SaaS)
Apr 2024
"I had the pleasure of working with Katerina on multiple projects, and her exceptional organizational skills and strong focus on tasks truly stood out. It was a wonderful experience having her as part of our team. Her dedication to work and professionalism are at the highest level. Always punctual and reliable, Katerina is an outstanding team member who contributes greatly to any task, project, or team she is part of."
Neven P.
CEO at MyRent - Channel manager & PMS Software (SaaS)
Feb 2025
"Exceptional Executive Assistant - Intelligent, Diligent & Highly Productive. Katerina is outstanding. She combines sharp intelligence with meticulous attention to detail - a rare combination in content work. She manages complex SEO content projects for me, including AI-driven content optimisation, manual content improvement, and systematic content uploading. What impressed me most was her ability to spot performance improvement opportunities independently and action them without hand-holding. Katerina's communication is excellent, her follow-through is reliable and thorough, and her productivity consistently exceeds expectations. She takes genuine pride in her work and delivers quality at speed - a total joy to work with."
Lee D.
CEO, The Lead Alchemists Agency
Nov 2025
Why only three testimonials? Because I work with clients on a long-term basis. I grow with them and help them achieve their goals over time. I'm not here today and gone tomorrow - I'm not a freelancer, I'm your right hand, someone you can rely on, and someone you can grow with. Someone who understands your business needs and who is here to help you achieve your business goals.
Ready to get your inbox under control and your projects actually finished?
Let's chat. Book a free 30-minute call and we'll figure out if I'm the right person to help you stop putting out fires and start getting things done. Worst case scenario? You get some free advice and go on with your day. 😊