Janusz Ladecki
I'm Janusz Ladecki, a Senior Full Stack Developer with 12 years of IT experience, delivering across startups and multinational enterprises.
About
I’m Janusz Ladecki, a Senior Full Stack Developer with 12 years of IT experience, delivering across startups and multinational enterprises. I have held roles from Full Stack Developer to DevOps Engineer, Scrum Master, and CTO, always striving to understand the full spectrum of software and product creation. My approach centers on building clean, testable code and empowering teams to raise the bar in web architecture and UI/UX.
I thrive where technology meets psychology, designing intuitive, human-friendly solutions with a strong emphasis on UI/UX and end-user empathy. I enjoy bridging technical and behavioral insights to create products that resonate with people while remaining robust and scalable.
- 11 years' experience
- Joined September 2025
Skills· 49
Kubernetes
Jira
JavaScript
GraphQL
MySQL
Docker- SQL
PostgreSQL- React JS
React Native- Spring
Java
Django
AWS
TypeScript
HTML5
CSS- MongoDB
Python
VMware
Azure
Kotlin- Redis
- Elasticsearch
- Oracle
- SEO Copywriting
- SEO
- Web3
Tailwind
UI
Vue.js- Web Design
- Active Directory
PHP- n8n
- MVP
- Large Language Model
- GPT
- Google Cloud
Figma- Claude
- ChatGPT
- API
AngularJS- Amazon Web Services
- AI Video
- AI Images
Adobe Premiere Pro- Adobe After Effects
Languages
- EnglishFluent
- PolishFluent
- GermanBeginner
- RussianBeginner
Industry experience
- Software & Internet
- Healthcare
- Telecommunications
- Education
- Professional Services
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Work experience· 9 roles
Designed and implemented an end-to-end, tailor-made CRM solution with a virtual assistant based on an LLM model, automating the analysis of sales and user data. The system enhanced lead conversion rates by 25% while growing average customer lifetime value by 18%.
Co-founded a startup focused on AI-powered weather modeling. Performed business modeling, secured $500k in funding, and built technical solutions from the ground up, introducing automation and Agile processes.
Designed and implemented customer-specific solutions in close collaboration with users and clients. Managed development and maintenance of all web applications, including UI/UX design. Oversaw team leadership via Agile Scrum, organizing retrospectives and skill enhancement sessions. Identified and secured multiple high-impact vulnerabilities within the infrastructure. Reduced +2 years of technical debt and quadrupled compilation speed through new architectural approaches.
Education
Certifications and awards· 12
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