I’m a freelance automation consultant. I help businesses automate manual work and connect their tools, building reliable Excel, Google Sheets, and API-driven systems that keep working long after the project ends.
“It’s proven to be a valuable tool that works flawlessly! Jakub is an excellent communicator and was very diligent in getting the project finished. Highly recommend!”
Trusted by clients worldwide · Excel · Sheets · VBA · Apps Script · APIs
*Still looking for a client from Antarctica (the last missing continent) — if that's you, your first 5 hours are 50% off. 🐧
Not sure what should be automated yet? That’s fine — I’ll map your process with you, break it down step by step, and recommend what’s genuinely worth automating (and what isn’t).
Repetitive, error-prone manual work eating hours every week.
I replace the copy-paste-and-pray routines with reliable automations in VBA, Google Apps Script, and no/low-code tools — so the boring, breakable steps just run themselves.
“It’s proven to be a valuable tool that works flawlessly! Jakub is an excellent communicator and was very diligent in…” — Upwork client, cost-estimating automation
An inherited file or system that is slow, fragile, or half-abandoned by the last developer.
I take over spreadsheets, macros, and automations built by someone else — untangling, documenting, fixing, and modernising them so you are no longer one broken formula away from a bad day. A lot of my work starts exactly here.
“He knows what he’s doing and does a great job. The excel file created does exactly what we need it to do and there wa…” — Upwork client, commission workbook upgrade
Disconnected tools that force you to move data by hand.
I connect your CRMs, marketing platforms, payment tools, and internal systems so data flows between them automatically — no more re-typing the same numbers into three places.
“Jakub has been exceptional providing the solution. He understood the API very quickly though he didn’t have any prior…” — Upwork client, excel-to-api integration
Fragile, sprawling spreadsheets nobody fully trusts anymore.
Custom Excel & Google Sheets tools built around your exact workflow — with the complex logic, validation, and performance you would expect from someone who competes at this globally.
“Jakub ALWAYS delivers amazing work! 10/10.” — Upwork client, team commission payouts sheet
Reports assembled by hand, always slightly out of date.
Clear, decision-ready dashboards in Excel, Google Sheets, or Data Studio that pull your numbers together automatically — reporting built for decisions, not decoration.
A team that leans on one person for every formula and fix.
Practical, hands-on training for you or your team — from spreadsheet fundamentals to automation — so the knowledge lives in-house, not just with a contractor.
Every project starts with a free 30-minute review — no pitch, just a clear read on what’s worth automating and what it would take.
Show me the process, file, or integration that’s causing pain. I’ll tell you what’s worth automating, what isn’t, and roughly what it would take — no pitch, no obligation.
You get a short written plan: what will be built, what it will cost, and when. Fixed price when the requirements are clearly written down; hourly for open-ended or ongoing work.
Built to be maintainable and validated against your real data — not a quick hack. Documented so it doesn’t depend on me.
Clean handover, training for your team if needed, and I stay reachable after launch. Systems that keep working after the project ends.
Beyond client spreadsheets and automations: full platforms, designed and built from scratch.
The competition platform for the DACH (Germany, Austria, Switzerland) finals of Excel esports — designed and built from scratch, end to end.
Visit the platform ↗A lightweight web app for team productivity — in the last stretch of development.
Web apps, internal tools, and full platforms — designed and built from scratch, with the same care as every automation.
Verified reviews from Upwork. Client names withheld for privacy.
“Jakub worked with us to build a VBA macro workbook that allowed us to import a data set from Bluebeam Revu that helped to automate our cost estimating process. It’s proven to be a valuable tool that works flawlessly! Jakub is an excellent communicator and was very diligent in getting the project finished. Highly recommend!”
“Jakub delivered amazing work for us and I enjoyed working with him. He made sure we were clear on the deliverables before we started and came up with an innovative solution which is exactly what we needed! He kept us up to date with his progress and always got back to messages quickly. He has great skills and understanding. I would definitely use him again in the future and would highly recommend him to others.”
“Jakub has been exceptional providing the solution. He understood the API very quickly though he didn’t have any prior knowledge which demonstrates his agility.”
“He knows what he’s doing and does a great job. The excel file created does exactly what we need it to do and there was no miscommunication or delays. Everything went very smoothly.”
“Jakub ALWAYS delivers amazing work! 10/10.”
“Jakub was a great communicator, provided helpful suggestions, and delivered a functional product ahead of schedule. He was very pleasant to work with and I highly recommend him for your next job.”
I’m a freelance Excel and Google Sheets automation consultant and VBA developer, building automation and spreadsheet systems for businesses that are tired of doing things by hand and value accuracy. Placing 3rd in the world at the Excel World Championship means I’m comfortable with complex logic, large datasets, and performance-critical builds — so you get solutions that are efficient and robust, not just functional.
I’m reliable, detail-oriented, and focused on solutions that hold up long-term — not quick hacks. Communication is clear, timelines are respected, and I’ll flag improvements beyond the original scope when they’ll genuinely help.
Anything else on your mind? Just ask — it’s what the free review is for.
Spreadsheet systems in Excel and Google Sheets, process automation (VBA, Google Apps Script, no/low-code), API integrations between your tools, dashboards and reporting, taking over legacy files and automations, and Excel/automation training. If it involves data moving between people, files, or tools, it’s probably in scope.
Yes — a lot of my work starts exactly there. I audit what exists, stabilise and document it, fix what’s fragile, and modernise it where that pays off, so you’re no longer dependent on the person who originally built it.
Every project starts with a free 30-minute review. Projects with very clearly written requirements get a fixed price, so you know the cost before anything is built. Where the scope is still open or the work is ongoing, I bill hourly — and I’ll tell you up front which of the two fits your project.
Small fixes and single automations are often done within days. Full reporting systems, integrations, or dashboards usually take one to a few weeks, depending on scope and how quickly we can get access to your data and tools. You get a realistic timeline with the quote.
Yes, NDAs are fine. Anything you send me is used only for your project, kept only for as long as the work needs it, and deleted when we’re done or whenever you ask. If you’d rather nothing leaves your environment at all, I can work inside your own accounts or shared drives instead.
Microsoft Excel, Google Sheets, VBA, Google Apps Script, Power Query, Data Studio, REST APIs, and no/low-code platforms like Zapier — plus whatever your existing stack requires.
Yes. I work remotely with clients around the world, async-first, with overlap hours for calls across US, UK, and EU time zones.
That’s the goal. I build tools to be flexible: the things that change often — rates, categories, mappings, thresholds — live in settings you can edit from the tool itself, so small changes don’t need a programmer. Everything is documented and handed over cleanly, with training for your team if you want it, and I stay reachable after launch.
Every enquiry starts with a free 30-minute project review: show me the process, file, or integration that’s giving you trouble, and I’ll tell you what’s worth automating, what isn’t, and roughly what it takes — no obligation.
I read every message personally and reply within one business day. Sharing your time zone and preferred hours for a call is very helpful.
Prefer email? hello@polskicoding.com
“He made sure we were clear on the deliverables before we started and came up with an innovative solution which is exactly what we needed! He kept us up to date with his progress and always got back to messages quickly.”
