Kraków, Poland · Available for FrontEnd development and SM/PM Services

Codefreeze

COO, Black Label
Project Manager & Scrum Master
Senior Front-End Developer

I help organisations ship software better and manage operations smoother.

Long-lasting partnership
Black Label
Chief Operating Officer, Front-End Developer, Project Manager, Business Analyst

I run operations at Black Label — a Kraków-based software company building custom analytics solutions since 2006. My job consists being a Front-End Developer (still), Project Manager, Growth Specialist, Business Analyst, Scrum Master, Team Leader, and sometimes HR Partner. I successfully developed, guided and managed projects from several industries, like Fintech, Agtech, Edtech, Medtech, Biotech and Logistics. I usually work with small and medium companies, from a couple of people to team of 200. Whenever I find free time, I run content initiatives, like TechFlix and The Black Labelist on Black Label blog. Since day one of my work in Black Label I also became a Highcharts partner, regularly meeting with the C-suite, being active member of their Product Council and sometimes even coding a chart or two.

10yr
working history with Black Label and Highsoft team
6+
Industries
7
different hats (roles)
Consulting
Codefreeze
Founder · Technical & Product consultant

Codefreeze is my B2B consulting practice for select engagements where senior judgment matters more than team size. I bring two distinct capabilities: deep technical work — expert Highcharts, JS/TS, and data viz engineering — and product, delivery and operations leadership — Project Management, Scrum and Agile leadership, and team guidance. Both rooted in real delivery experience across 10+ years.

JS/TS
core specialty
10+
successfully advised companies on a long term basis
590+
answers on StackOverflow
Game Dev
Tag — the game
Independent Game Developer

In my free time, I create my own online and local multiplayer game, called Tag — the game. The idea is simple, to bring our old kid's play back to life with fun, new approach. The 2D platform style game is allowing you to play Tag in real time with your friends, playing as a fun character — mad scientist, zombie, pigeon, etc. — all of them with additional dedicated super powers. The last man standing wins!

Godot
game built in Godot
Beta
testing phase
PC
currently developed for PC
Grzegorz Blachliński
Codefreeze
Grzegorz Blachliński
Kraków · Poland

I studied Medical Physics at AGH University of Krakow and did research at both Heidelberg University and the Maria Skłodowska-Curie National Research Institute of Oncology. That background — making complex data legible, communicating what numbers mean — never left me.

I joined Black Label at the bottom: support engineer, then junior JavaScript developer, then Project Manager and Scrum Master. I delivered multiple projects hands-on in both roles before moving into operations. Today as COO I guide Black Label's Project Managers, Scrum Masters, and Team Leaders — helping them make better decisions across the organisation. That full-stack view of how software gets made — technically, operationally, commercially — is what makes those conversations real.

Today I run operations across an organisation of 30+ and work with engineering teams on our most technically ambitious projects. I still develop new solutions related to Analytics and Data Visualisation. I also created TechFlix Presents The Black Labelist — a 9-season blog series examining change management and engineering culture at scale — and contribute to the global developer community through Stack Overflow, where I've reached ~246k+ people with 590+ answers and comments. I take on select client projects through Codefreeze when the work is genuinely interesting. I also create my own game, so if you are interested in beta testing, let me know!

Career arc
Education
Head of Scientific Group
AGH University of Krakow
Academia
Student Assistant
Heidelberg University
Research
Intern — Oncology Research
Maria Skłodowska-Curie National Research Institute of Oncology
Early career
Support Engineer → Junior JavaScript Developer
Black Label
Independent developer
Data Visualisation Specialist, Highcharts Expert
Black Label
Leadership
Project Manager
Black Label
Now
Chief Operating Officer
Black Label · + Founder at Codefreeze
Future
Game Author
Codefreeze

Reducing Technical depth · Widening Operational range · Helping Teams achieve best results

Highcharts & Data Viz
  • Core library contributor since 2016
  • Custom chart types & extensions
  • Performance optimisation at scale
  • Worked across several industries
  • Specialised in Analytics Workflows
Engineering Leadership
  • COO at 30+ person engineering org
  • Delivery & quality ownership
  • Technical team scaling
  • Process & standards design
  • 15-year client partnerships
Product & Data UX
  • Data product strategy
  • Dashboard information design
  • BI tool customisation beyond limits
  • Scientific background in data analysis
Product & Project Management
  • Product Management specialist
  • Delivered projects as AM, PM & Scrum Master
  • Guides PMs, SMs & Team Leaders
  • Agile, Scrum, Developers alignment
  • Decision-making frameworks at scale

The toolkit

Visualization
Highcharts Mapbox D3.js SVG / Canvas
Languages
JavaScript TypeScript Python HTML / CSS
Frontend
React Vue Vite GraphQL jQuery
Domain
Fintech Healthcare Life science Industrial Smart city
Delivery
Scrum Product Management Agile Risk management Change management

Beyond the code

246k+ people reached
Stack Overflow

590+ answers and comments, 5.000+ reputation. I've been helping developers solve Highcharts, JavaScript, and data visualization problems for years — at scale.

View profile →
BL blog article
Org Transformation: Inside the Cocoon of Change

Using the metamorphosis of a caterpillar as a metaphor — how incremental, patient change beats sweeping top-down transformation when building a sustainable organisation.

Read the article →
OSS core contributor
Open source & speaking

Highcharts core contributor and Open Source solutions creator. Black Label has published multiple of my open plugins used by the global Highcharts community. I recently had my debut as a public speaker on data viz, engineering and partnerships in company.

GitHub →

Let's work
together.

If you need an expert in data visualization, a Project Manager or Scrum Master, a technical leader who can advise on data product strategy, or a senior Front-End consultant — I take on a small number of projects through Codefreeze.

or write to grzegorz.blachlinski@codefreeze.me