Jakub
Niewczas

Mini-Labo is a creative agency specializing in Web3 projects, including NFT collections, blockchain applications, and consultancy.

As a core engineer, I work on various Web3 projects, usually taking care of the backend, Web3 integration on both on-chain and off-chain sides, and the infrastructure that fuels our apps.

Due to our close relationship with Scatter.art, an NFT launchpad, I became a regular part-time engineer there, heavily contributing to Scatter's fullstack, cutting-edge Next.js codebase.

I absolutely fell in love with the Web3 space and blockchain technology.

Infinition is a small but robust Japanese company focused on the e-commerce industry. It started with consultation and gradually pivoted to development after I joined.

We handle the development, maintenance, and infrastructure of several Shopify projects for major Japanese companies. As a tech lead, I am responsible for providing solutions related to building Shopify stores, Shopify apps, supporting apps backends, deployment pipelines, and custom hosted infrastructure.
I automate as many tasks as possible, heavily relying on Docker, Slack and GitHub Actions.

Degica is a Japanese fintech company specializing in payment gateways that handle millions of dollars daily.

As a Senior Software Engineer, I worked on the backend of the customer admin panel for the main application, Komoju.
Later, due to my frontend skills, I was moved to a newly formed frontend team, where I led the redesign and implementation of the entire platform. My team built an internal design system that we used and later shared with other teams.

I was also responsible for hiring, onboarding, and mentoring junior developers, conducting code reviews, making architectural decisions, and ensuring high code quality across the projects I was involved in.

As a Senior Software Engineer, I was responsible for complex Vue-based frontend applications.

Due to my skills, experience, and mentality, I became the frontend team leader, supervising development processes, architecting apps and infrastructure, mitigating threats, and reviewing tons of pull requests. Virtusize apps handled tens of millions of requests per week, so I constantly dealt with all kinds of massive-scale challenges.

My discipline, strictness, fairness, and honesty built full confidence in my team and their trust in the judgments and decisions I made.

At Voyagin, a Tokyo-based travel agency and tours and ticket booking platform, I worked as a Full-Stack Engineer using React and Rails.

During my time there, we rewrote the entire portal's frontend in React. We tackled and solved various significant React app challenges, including component maintainability, SSR, code splitting, state management, forms, A/B testing, CSS modularity, internationalization (i18n), testing, payments, code review, and more.

The backend consisted of a rich Rails codebase, featuring extensive background job logic for integrating with multiple external ticketing APIs, several payment gateways, and anti-fraud solutions.

During this one year of digital nomad life, mostly in Thailand, I served as the lead frontend developer for a larger e-commerce platform, featuring a ~10k-line modular and composable CSS design system. I also developed a React-based Chrome extension as part of the project's ecosystem.
On the backend side, I worked as a RoR developer on a mid-sized recruitment app, handling lots of data, integrations, and use cases, while heavily leveraging automated email communication.

At Mobica, I worked primarily as an iOS developer on sophisticated international financial apps.

Thanks to a rich global client base, I had the opportunity to collaborate with teams worldwide. This experience taught me a great deal about how large companies organize their software delivery processes.
In 2014, I spent several months in Hong Kong, working directly with a client's developers.

At App'n'Roll, I worked as a Rails engineer on several projects, including foap.com. Foap.com is a photo and video sharing platform and photo marketplace.

With significant traffic and a huge base of users and photos, I faced and solved numerous mid-sized Rails app challenges, primarily related to database scalability, payment gateways, and photo manipulation background tasks.

I was hired at codequest before I even graduated from university and worked as a Rails developer for 2 years.

Thanks to the talented programmers there, I was able to learn real-world, industrial-level programming extremely quickly. Our clients were mostly American startups, and I worked under the Scrum methodology.

My partnership with CAC Wzornictwo Graphical Studio began when I was hired to reimplement their website. Since then, the company has occasionally outsourced website development projects for their clients to me.

During my university studies, I was nominated to participate in a 3-month paid internship program called "Human - Best Investment" at Ringier Axel Springer.

In this role, I was responsible for maintaining and implementing new features on two of their PHP-based news web portals. Working in an enterprise environment taught me valuable skills in load balancing, caching, managing large PHP codebases, and navigating corporate workflows.

LogicIT offered me a paid internship as an web developer while I was still at university. I was responsible for building an app that notifies users how soon a bus will arrive at the nearest bus stop.

After completing the internship, we continued our collaboration, and I was hired as a web developer for several projects.