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Bartosz Stańkowski

Senior Frontend Developer based in Warsaw, Poland

About Me

Seasoned frontend developer with over a decade-long history of effective collaboration with remote, cross‑functional teams. Using transparent communication, diligence in development and testing, and proactive problem solving to deliver robust, user-centered solutions for the web and mobile platforms.

Experience ranging from pixel-perfect, accessible and responsive design implementations with semantic HTML and clean CSS, through data-rich React and TypeScript apps, to taking over full-stack, managerial, and customer support duties.

Professional Experience

Senior Frontend Developer

Medical device company building a robotic surgery system.

Dates Employed:
Nov 2021 - Dec 2022
Location
Remote

Key Responsibilities

  • Designed, developed and documented new features, bug fixes, and a shared components library for two progressive web apps used by surgical teams.
  • Implemented a complete redesign and a set of performance optimizations in one of the apps.
  • Performed code reviews, participated in testing, planning, and design decisions.
  • Researched and proposed solutions, presented accomplished work to other teams and stakeholders.

Tech stack

  • React
  • TypeScript
  • CSS (modules, SCSS, Styled Components, Tailwind)
  • HTML5
  • GraphQL and REST APIs
  • Jest, React Testing Library
  • Redux (RTK)
  • Node.js
  • Webpack
  • Rollup
  • GitLab CI/CD
  • Sumo Logic
  • PostgreSQL
  • feature flags

Lead Developer

Grazer LearningStartup dedicated to developing tools to help tutors and students.

Dates Employed:
Nov 2016 - Sep 2020
Location
Remote & London, UK

Key Responsibilities

  • Implemented a React Native app for iOS and web browsers, managed distribution on multiple platforms.
  • Collaborated closely with the CEO, actively participated in design and planning.
  • Assessed technical feasibility of business needs and documented them for development.
  • Built demos and prototypes in fast iterations based on feedback from users and peers.
  • Coordinated the work of the team, led weekly scrum meetings.

Tech stack

  • React Native
  • Redux, Redux-Saga
  • JavaScript
  • Flow types
  • Xcode
  • Objective-C
  • Crashlytics
  • AWS (EC2, S3, Lambda)
  • Serverless
  • Heroku
  • Docker
  • Ruby on Rails
  • WebSockets
  • REST API
  • PostgreSQL

Founding Frontend Developer, DevOps, QA, PM

BitbeStartup building a Bitcoin exchange and an online payment system.

Dates Employed:
May 2015 - Jun 2016
Location
Warsaw, Poland

Key Responsibilities

  • Implemented the entire frontend of customer facing web sites, as well as admin and back office systems.
  • Worked closely with a tech lead, backend developer, designers, business and operations teams.
  • Configured, maintained, and documented server architecture on AWS, including automated provisioning, monitoring, deployment, logs search and visualisation.
  • Translated business requirements into technical specifications and user stories.

Tech stack

  • JavaScript
  • jQuery
  • Require.js
  • HTML5
  • SCSS
  • PHP
  • AWS (EC2, S3, RDS, ELB, SNS)
  • Jenkins
  • SaltStack
  • Elastic Stack
  • Redis
  • Blockchain
  • Mocha
  • Cypress

Lead Frontend Developer

JeemTVFormerly the Al Jazeera Children's Channel.

Dates Employed:
Oct 2012 - Feb 2014
Location
Remote & London, UK

Key Responsibilities

  • As a member of an agile, multidisciplinary team, I took charge of the entire frontend layer of three mobile-first, responsive systems: dual-language (English and Arabic) audience-facing website, CMS, and Audience Management System, as well as custom-made styleguides for internal use.
  • Created frontend coding standards and documentation for further in-house development.
  • Conducted training sessions with the client’s dev team.

Tech stack

  • HTML5
  • SCSS
  • JavaScript, jQuery, Backbone.js
  • Microformats
  • PHP
  • Jenkins
  • feature flags

Frontend Developer

x-team.com

Dates Employed:
Oct 2010 - Dec 2011
Location
Remote & Kraków, Poland

Worked with an international team delivering pixel-perfect, responsive and accessible implementation of designs using semantic XHTML, CSS, and JavaScript. Built projects for some of the key clients and internal.

Tech stack

  • XHTML
  • CSS, SASS, LESS
  • JavaScript
  • jQuery
  • Microformats

Freelance Developer and Consultant

Dates Employed:
2007 - 2016
Location
Remote & Poland

I have worked on and off as a freelance full-stack developer and consultant, building bespoke websites and apps for a wide range of international clients, including small businesses, startups, and charities.

Key Responsibilities

  • Led projects from concept to completion and engaged in short-term collaborations as needed.
  • Worked with clients to define requirements, assess possibilities, and create roadmaps.
  • Defined technical tasks and coordinated the efforts of engineers and designers.

Education

Bachelor of IT

Katowice Institute of Information Technologies

Dates
2006 – 2010
Location
Katowice, Poland