Adrian Bigaj

5.0

(17 reviews)

US$15.00

For every 15 mins

Sessions/Jobs

First 15 mins free for your first session

ABOUT ME

Lead Frontend Developer

Hi,

Coding is hard and we're usually lacking time. Tight deadlines, difficult, large-scale projects, debugging alone - no fun included. With my support, everything will become a breeze. I'll explain how things work, why they work like that, propose optimized solutions, and share with you all the best practices, and insights I've gathered over time as a Software Engineer (Lead Frontend Developer / Technical Recruiter, close co-op with Designers, Product Owners, business in general, etc.)

Learn by building projects with me.

I'll be happy to help you in both the short-term and long-term.

You can also check out my website for building projects: https://bigdevsoon.me/

Warsaw (+02:00)

Joined November 2020

EXPERTISE

TypeScript

8 years experience

I've done work from pure JavaScript, jQuery to Angular, React, and Node. I value the modern, declarative, functional approach in JavaScri...

I've done work from pure JavaScript, jQuery to Angular, React, and Node. I value the modern, declarative, functional approach in JavaScript (ESNext). I love TypeScript when it comes to typed JavaScript.

HTML/CSS

8 years experience | 8 endorsements

CSS-in-JS is my favorite, I've used HTML/CSS for dozens of pages. I'll be happy to help you make CSS modular, scalable and solve any burn...

CSS-in-JS is my favorite, I've used HTML/CSS for dozens of pages. I'll be happy to help you make CSS modular, scalable and solve any burning problems.

Material-UI Bootstrap Responsive Design Material Design Ant Design HTML5

React

8 years experience | 6 endorsements

React is my go-to tool for creating SPA applications. My latest project is based on micro-frontends architecture and is powered by React ...

React is my go-to tool for creating SPA applications. My latest project is based on micro-frontends architecture and is powered by React on the Frontend.

Es6 Redux React Router

Es6 Redux React Router React Apollo JSX

Webpack

7 years experience | 3 endorsements

There are tools like CRA, Next, Gatsby, but it's good to understand the boilerplate process, code splitting, tree shaking, and all kinds ...

There are tools like CRA, Next, Gatsby, but it's good to understand the boilerplate process, code splitting, tree shaking, and all kinds of optimizations. I can help with that. I'm a fan of the fast, friendly development environment and efficient bundles.

React Gatsby.js JavaScript

React Gatsby.js JavaScript HTML/CSS Next.js

Redux

7 years experience | 6 endorsements

I've done 10+ projects using redux, it's a great library for state management but comes with some boilerplate (latest hooks solve that a ...

I've done 10+ projects using redux, it's a great library for state management but comes with some boilerplate (latest hooks solve that a bit). I can explain when to use useReducer from React, and when to decide on redux, and why.

Redux-Saga Reselect React

Node.js

8 years experience | 1 endorsement

Even if you are not a Fullstack Developer, Node can help with mock servers, proxies, small servers for testing purposes in Express. It's ...

Even if you are not a Fullstack Developer, Node can help with mock servers, proxies, small servers for testing purposes in Express. It's written in JavaScript, a crucial tool to use.

Express.js MongoDB API

Express.js MongoDB API JavaScript PostgreSQL

Next.js

2 years experience

REVIEWS FROM CLIENTS

5.0

(17 reviews)

Roni Alexander

March 2021

Another great session! Adrian really knows his stuff and knows how to explain it very well.

Jose Penguino

February 2021

Great as always, it's a breeze when working with Adrian, fantastic Developer

Navneel K

February 2021

I had sessions with him to help me support on React project. He's pretty good. I would recommend him.

Removed User

February 2021

I approached Adrian today for long term mentoring. He explained the process and clearly set expectations for the next session. I'm very much looking forward to it!!

Navis Michael Bearly J

February 2021

Had a great session with Adrain, fully satisfied with his mentorship on writing React js test cases. He is very knowledgeable and empathic and gave me some extra time as well. Need to learn lot from adrain, looking forward to have mentor session with you again.

Jose Penguino

February 2021

Amazing Mentor who always digs into my code and explains everything in a straightforward way, I feel smarter after each session with Adrian!

Roni Alexander

February 2021

I was lost trying to figure out how to run a graphql mutation and Adrian helped me solve it :)

FNG8111

February 2021

Excellent Support. Provides comprehensive guidance and continuous encouragement

tragicomic

February 2021

He reviewed the project and helped me to take the right steps for the future. Thanks.

Hauwa Njidda

February 2021

My mentor explained it really well. Thank you again

SOCIAL PRESENCE

GitHub

knowledge-pills

Frontend code examples & theory also known as Knowledge Pills

JavaScript

big-dev-soon-notely-freerun-6uinkh

HTML

Community Posts

10 Technical Interview Tips

Technical Interview can be a hard nut to crack. It's challenging, it's different, it's evolving. These days, you can't only show coding and problem-solving skills but also have a personality that plays well with the team. I prepared 10 universal tips to help you beat the next interview.

EMPLOYMENTS

Senior Technical Lead

j-labs/Sinch

2017-11-01-2020-12-01

- Creating Customer Portal from the scratch for end-users from all over the world - Participating in designing front-end architecture, ha...

- Creating Customer Portal from the scratch for end-users from all over the world - Participating in designing front-end architecture, having an impact on tools & solutions - Modularizing front-end code to fit feature like architecture and introducing modern solutions for React and Friends - Direct contact with the client on daily basis, discussing requirements, designs, style guides, AC's, and impacting Agile environment (SCRUM / KANBAN, etc.) - CI & CD, improving testing tools, testing coverage, and the entire workflow - Using the newest technologies and being up to date with modern front-end trends - ... and much more!

HTML/CSS

Node.js

Continuous Integration

HTML/CSS

Node.js

Continuous Integration

Jira

React

Webpack

Material-UI

GraphQL

Cypress

Express.js

Software Engineer - Team Leader

Grape Up

2016-11-01-2017-10-01

First three months: - Working on Avaya Communicator, pure JS, and Angular 1.x - Writing unit tests - Working in an international team - W...

First three months: - Working on Avaya Communicator, pure JS, and Angular 1.x - Writing unit tests - Working in an international team - Writing technical articles/documentation Then: - Writing SPAs from the scratch in React + Redux - Participating in the building process, working in SCRUM methodology - Direct contact with the client

HTML/CSS

Node.js

Git

HTML/CSS

Node.js

Git

Angular

Unit Testing

React

JavaScript

Webpack

Redux

RESTful API

Junior Software Developer

Ericpol/Ericsson

2016-04-01-2016-10-01

– Solving issues with 2G network simulation application – Maintenance and expanding testing jobs in Jenkins – Implementing of 2G mechanis...

– Solving issues with 2G network simulation application – Maintenance and expanding testing jobs in Jenkins – Implementing of 2G mechanisms in Java – Writing technical documentation

Python

Java

Jenkins

Python

Java

Jenkins

Subversion

PROJECTS

BigsonDev - Frontend MentorView Project

BigsonDev

2020

My business website - Mentorship services, Frontend knowledge in form of blog articles, knowledge pills, sharing website/apps ideas with ...

My business website - Mentorship services, Frontend knowledge in form of blog articles, knowledge pills, sharing website/apps ideas with high-quality designs, everything in one place. (15k+ monthly page views)

React

Gatsby

React

Gatsby

Sinch - DashboardView Project

Sinch

2020

I'm a Lead Frontend Developer for Sinch, choosing technology stack, planning architecture for Frontend, and making sure everything scales.

Node.js

React

Webpack

Node.js

React

Webpack

Material-UI

Cypress