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Patryk Pawłowski-Senior Fullstack Engineer

Patryk Pawłowski - Senior Fullstack Engineer - profile avatar
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Gdynia, Poland

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Experience

Sep 2024 - Jul 2026
Remote

Senior Fullstack Product Engineer

A.Team

Position Summary
Senior Fullstack Product Engineer at A.Team
Industries
Banking and Finance
Real Estate
Business Areas
Information Technology
Product Development
  • Langan | Senior Fullstack Engineer: Converted the Langan Copilot proof-of-concept (AI-driven Phase I Environmental Site Assessment report automation) into a production application. Re-architected the React codebase, introduced React Query caching and React Hook Form + Zod validation, and split a monolithic UI into a maintainable component structure. Shipped fullstack features (authentication, API error handling, data filtering, generated-content management, site questionnaire) in React / Python / FastAPI, improving initial load time by ~45% and cutting redundant API calls by ~20%.
  • ApartTech | Senior Next.js Engineer: Led frontend for the leads feature of an apartment-rental platform (Next.js, React, TypeScript, Shadcn) using an AI-assisted workflow: authored agent rules and reusable core components for Claude Code, and integrated MCP to convert Figma designs into code via automated screenshot-versus-design iteration. Cut design-to-code turnaround by ~60% and shipped complex multi-step forms in half the estimated time.
  • Foyer | Lead Design Engineer: Led the complete UI redesign of a fintech app for first-time homebuyers (React). Built a reusable UI component library that cut feature-delivery time by ~35%, re-architected the codebase, mentored 2 junior developers, and ran thorough code reviews while partnering with the Product Designer to resolve edge cases before implementation.
  • TerrAI | Senior Fullstack Engineer: Led frontend of a cross-platform AI assistant for property management (React) and built backend features in NestJS (TypeScript) and FastAPI (Python). Integrated AI features for auto-answering emails and processing documents, handling 200+ documents per week.
May 2023 - Aug 2024
Gdynia, Poland
Remote

Independent Game Development & Personal Projects

BadgerSquared

Position Summary
Independent Game Development & Personal Projects at BadgerSquared
Industries
Information Technology
Business Areas
Information Technology
Product Development
  • Designed, built, and shipped two games in Unity / C#, and released: Time Glitch, a story-driven time-loop puzzle, and Rescue Command, a one-bit 'knowledgevania.'
  • Learned pixel art from scratch and released to 5,000+ combined downloads.
  • Completed a half-Ironman triathlon.
Apr 2021 - Apr 2023

Senior Fullstack Developer

BCG

Position Summary
Senior Fullstack Developer at BCG
Industries
Advertising
Business Areas
Information Technology
Marketing
  • Built Python / Django applications managing large-scale marketing campaigns across 20M+ data points.
  • Founded and led an internal UI component library adopted across 12+ projects, standardizing frontend delivery firm-wide.
  • Led development of a data-heavy React application and integrated AI/LLM features to generate marketing materials (slogans, images, email templates), reducing content-production time for campaign teams by ~90%.
Oct 2018 - Mar 2021

Senior Fullstack Developer

Toptal

Position Summary
Senior Fullstack Developer at Toptal
Industries
Banking and Finance
Information Technology
Sport
Business Areas
Information Technology
Project Management
  • Delivered projects across the stack as a contractor.
  • Modernized CI/CD and developer tooling for a fintech identity-protection company (Bash, Node.js, TypeScript), reducing build times and manual release steps.
  • Built a React Native app for cycling meetups.
  • Additional work: REST APIs (Node.js, Firebase), a React UI for teaching a custom Jira-workflow scripting language, and the UFC Performance Institute landing page (Webflow, JavaScript).
Apr 2017 - Sep 2018

Senior Frontend Developer

MCH Group

Position Summary
Senior Frontend Developer at MCH Group
Industries
Arts and Crafts
Business Areas
Information Technology
Product Development
  • Led frontend of a multi-tenant Vue platform for managing art fairs and galleries.
  • Architected a shared UI component library and crafted the micro-interactions and UI polish that defined the product's design quality across tenants.
Jan 2013 - Mar 2017

Owner & WordPress Developer

Mevove Studio

Position Summary
Owner & WordPress Developer at Mevove Studio
Industries
Education
Healthcare
Retail
Business Areas
Information Technology
  • Ran a web studio delivering 30+ projects, including e-commerce for item lending and roller blinds, a training site for security specialists, a patient portal for a cancer-support NGO, and dozens of startup landing pages.
  • Managed a team of 2–5 and worked hands-on across WordPress, PHP, jQuery, Sass, and UI design.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Banking and Finance, Education, Healthcare, Retail, Information Technology, and Sport.

Banking and Finance
Education
Healthcare
Retail
Information Technology
Sport
Profile match chart

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Project Management, and Marketing.

Information Technology
Product Development
Project Management
Marketing
Profile match chart

Summary

Senior Fullstack Engineer with 13 years across the JavaScript/TypeScript stack, working end-to-end from React/Next.js front ends to Node.js, NestJS, and Python back ends. I own frontend architecture, UI performance, and design-engineering — shipping polished UIs with micro-interactions — and increasingly integrate AI/LLM features and AI-assisted development workflows. Founded UI component libraries reused across 15+ projects and mentored engineers through rigorous code review.

Skills

  • Core: Typescript, Javascript, React, Next.Js, System Design, Frontend Architecture, Ui Performance, Design Engineering, Micro-Interactions & Animation, Ux
  • Backend & Data: Node.Js, Nestjs, Express, Python, Fastapi, Django, Postgresql, Mysql, Mongodb, Redis, Prisma Orm
  • Ai/Llm: Llm Integration, Claude Code, Mcp, Ai-Agent Workflows, Prompt & Rules Engineering, Ai-Assisted Code Review & Testing, Rag
  • Cloud: Aws (S3, Ec2, Lambda, Dynamodb, Rds), Supabase, Firebase
  • Tooling & Practices: Git, Docker, Ci/Cd, Testing (Jest, Vitest, React Testing Library, Playwright), Clean Code, Code Review, Continuous Deployment, Monitoring
  • Ui: Mui, Shadcn, Tailwind, Styled Components, Sass, Html, Css; React Native, Ionic, Capacitor
  • Also Worked With: Vue, Php, C#, Unity, Wordpress, Jquery

Languages

Polish
Native
English
Advanced
Spanish
Intermediate

Education

Oct 2013 - Jun 2016

Polish-Japanese Academy of Information Technology

Bachelor of Arts · Graphic Design · Warszawa, Poland

Statistics

Experience

Total positions 6
Experience in Banking and Finance 4.5 y
Avg length 2 y 2 m
Longest experience 4 y 2 m

Global Experience

Countries worked in 1 (Poland)
Primary country Poland

Expertise

Recent roles Senior Fullstack Product Engineer, Independent Game Development & Personal Projects, Senior Fullstack Developer
Main industries Banking and Finance, Education, Healthcare
Main business areas Information Technology, Product Development, Project Management

Qualifications

Highest degree Bachelor

Profile

Created

Frequently asked questions

Have questions? Find more information here.

Patryk is based in Gdynia, Poland and can operate in on-site, hybrid, and remote work models.

Patryk speaks the following languages: Polish (Native), English (Advanced), Spanish (Intermediate).

Patryk has at least 14 years of experience. During this time, Patryk has worked in at least 5 different roles and for 6 different companies. The average length of individual experience is 2 years and 3 months. Note that Patryk may not have shared all experience and actually has more experience.

Based on recent experience, Patryk would be well-suited for roles such as: Senior Fullstack Product Engineer, Independent Game Development & Personal Projects, Senior Fullstack Developer.

Patryk's most recent position is Senior Fullstack Product Engineer at A.Team.

In recent years, Patryk has worked for A.Team, BadgerSquared, and BCG.

Patryk is most experienced in industries like Banking and Finance, Education, and Healthcare. Patryk also has some experience in Retail, Information Technology, and Sport.

Patryk is most experienced in business areas like Information Technology, Product Development, and Project Management. Patryk also has some experience in Marketing.

Patryk has recently worked in industries like Advertising, Banking and Finance, and Real Estate.

Patryk has recently worked in business areas like Information Technology, Product Development, and Marketing.

Patryk holds a Bachelor in Graphic Design from Polish-Japanese Academy of Information Technology.

Patryk is immediately available full-time for suitable projects.

Patryk's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

To hire Patryk, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

600
450
300
150
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Market avg: 485-565 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.