Senior Frontend DeveloperFounder @ Scale Sail
I help enterprise teams and ambitious startups turn slow, tangled Angular frontends into clean, modular systems that ship faster and stay fast. Expect measurable performance wins, audit-ready engineering practices, and architecture that scales with your product.
Angular is my specialty. I can also ship React when your stack or roadmap requires it.
- Engineering
- Audit-ready delivery
- Performance
- Core Web Vitals wins
- Product
- Ship faster, safer
Performance
Projects
On Time & Budget
What I Deliver
Bank-Grade Engineering. Startup-Speed Delivery.
For enterprise teams and ambitious startups, I modernize legacy frontends, fix performance bottlenecks, and build modular Angular systems that stay maintainable as your product grows. Clear outcomes, measurable wins, and audit-ready quality.
Enterprise Migration & Modernization
Transform slow, tangled legacy frontends into clean, modular Angular systems. I specialize in Angular migrations (AngularJS/legacy → modern), refactoring strategies that remove technical debt, and scalable architectures that keep delivery moving.
SaaS Product Engineering
End-to-end delivery for scalable SaaS products. I design maintainable UI architectures, predictable state management, and performance-first frontends that support rapid iteration without regressions.
Architecture Audits & Performance
Deep-dive audits into your codebase structure and runtime performance. I identify scaling bottlenecks, optimize Core Web Vitals, and turn spaghetti code into feature-based modules with clear ownership.
40%+Faster load times
Feature Delivery
Turn product requirements into deployed reality. I execute end-to-end feature development—from architectural planning to pixel-perfect UI—ensuring new capabilities launch smoothly and integrate seamlessly with your existing system.
Fractional Tech Lead / Mentorship
Elevate your team's capabilities. I provide code reviews, set up best practices (CI/CD, Testing), and mentor developers on advanced architectural patterns like Signals and RxJS.
Work History
Professional Experience
Delivering modernization and performance improvements at scale—from regulated enterprise platforms to high-velocity product teams.
Senior Frontend Developer
GFT Technologies (Citi)
Leading architecture for mission-critical trading platforms. Enforcing 100% test coverage policies while migrating legacy micro-frontends to a coherent Nx monorepo. Balancing enterprise compliance with developer velocity.
Frontend Developer
Silent Eight
AI Compliance SaaS. Led the frontend modernization initiative (Angular 14 → 19) and introduced "Zoneless" architecture for 50% performance gains. Worked directly with Product Owners to accelerate feature delivery.
Software Developer
BNP Paribas
GOonline Platform. Delivered features for 1M+ active users. Managed the complex migration of core banking modules from AngularJS, ensuring zero downtime during high-traffic windows.
Javascript Developer
Amway
Global E-commerce. Built high-traffic dashboards for business owners. Optimized data visualization components handling millions of records.
Technical Proficiency
Engineering for Scale & Performance
This is the stack I use to modernize frontends, improve Core Web Vitals, and keep large codebases maintainable under real-world delivery pressure.
Primary Stack
Angular
6+ years exp.
TypeScript
6+ years exp.
JavaScript
6+ years exp.
RxJS / Signals
6+ years exp.
NgRx / Signal Store
6+ years exp.
SCSS
6+ years exp.
Angular Material
6+ years exp.
Git
6+ years exp.
Additional Tools
Detailed Expertise
More than just code.Tech Leadership.
Software is built by people. I foster environments where technical excellence meets product vision.
Leadership & Team Mentorship Technical Communication Problem Solving Agile & Collaborative Mindset Adaptability & Continuous Learning
Get in Touch
Book a Call
If you're dealing with a slow, hard-to-change frontend (or planning a new SaaS build), I can help you ship with confidence. Share your goals and constraints—I'll reply with a clear recommendation and next steps.
- Address
- Warsaw, Mazowieckie, Poland