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Website: https://linktr.ee/YoKulGuy
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I'm a realist, aspiring general system thinker, and software craftsman. Despite specialists giving much contribution and productivity to society, general system thinkers and their general system thinking can help us solve the second-order effect of human creation.
As a society, we build civilization; we build skyscrapers, aeroplanes, gadgets, and all the advancements in technology, but we overlooked the second-order effect of our creation. Global warming and gadget addictions are an example to name a few.
The more people adopt general system thinking, the more we can achieve a better society and brings our world to the next thousand years.
I do research and craft code as my way of expressing my idea and belief. I crafted a scientific computation tool and instrument to help researchers do better research when I was in college.
I led a team in a startup called Mekari to empower businesses in Indonesia. I previously worked at Midtrans, enabling software developers to be more productive and better empower commerce through technology.
I write production code in Elm, JavaScript, Bash, Ruby, and Java. In 2020 I did functional programming on Elm and built a community around it. Feel free to reach out to me if you are an Elm user!
Working in the IT sector for more than 10 years.
With over 10 -years of freelancing and professional experience taught me all kinds of frameworks and languages, ranging from React, Angular, Vue, Node js, Express js, React Native, Redux, Rx JS, JavaScript, Typescript, WordPress, PHP, MySQL, MongoDB, Firebase, Sqlite, Postgresql, ES5+, Python3, Machine Learning, Deep Learning, RNN, CNN, Android Java/Kotlin, iOS Swift/SwiftUI, C/C#/C++, .Net, Assembly, VBA, VB, Excel Macro, Java, Spring Boot Micro-services, Zoho, Salesforce, Hubspot, R, Shiny, STATA, MATLAB, Google Sheet, App Script, Bubble io, etc.
Over my long career, I have come across all kinds of challenges and gained vast experience with different kinds of industries like portals, medical industry, perception exercise, employee management, etc.
I have good experience with frontend development using React JS along with Typescript, Firebase, GraphQL, React Native, Native Script, React, Material UI, Ionic, Node.js, Web Sockets, and real-time communication.
I have also worked on containerization technologies like Kubernetes, Docker, AWS, GCP, Azure etc.
I am very good with backend technologies as well like Java Spring boot, Microservices, MySQL, Postgres, Elasticsearch, AWS/Google integration.
Please contact me to get the result done in a professional way.
I have 10 years exp in Python, MySQL, GoLang, Data Science. I have rich experience in developing frameworks in scratch using Pytest and unitest. I am very passionate about coding and having good knowledge of data structures and algorithms
I love to teach what I know. I think I can explain things easily with examples. I have been working as a Software Engineer for the last 5 years and have worked with some of the world's most reputed companies like **Open AI, Scale AI, Doloras Lab**, etc as a freelancer.
I am an adept **Full Stack Software Engineer and Architect** and with a wealth of experience in frontend, backend, and Data Structures and Algorithms (DSA) solution development. My expertise spans **clean architecture, TDD(test driven development), code reviews, debugging, and profiling**, enabling the delivery of high-quality solutions within constrained short timeframes.
I have worked and collaborated with numerous prominent global blue chip corporations, startups, and international clients. Additionally, have made substantial contributions to Pluralsight and Stack Overflow, boasting a reputation exceeding 37k+ and ranking within the top 0.30% of users on the latter platform.
Motto: Full refund in case of no help.
Discounts:
- Student discount is applied automatically.
• Senior software engineer, have worked as a Subject Matter Expert and lead with the primary role to develop features, solve complex bugs, architecture refinements, feature integration, and development.
• I intent to deliver a top-quality experience by delivering the most optimal solutions and guidance to enlighten the learners.
• I have helped many developers to fix critical bugs and implement complex features on the Codementor platform.
• Teaching is one of passing and I have helped numerous mentees on their journey to become successful developers in various fields such as web, native mobile, and big data.
• I have expertise in curating and simplifying the content to deliver the best experience with different analogies.
• I am deft at feature implementation, debugging, and refactoring.
If you have any questions, Feel free to reach out, looking forward to meeting you.
Hey! I am Johnny B. 🙏
(Actually, my Romanian friends call me Ionică, which in English is basically: Johnny).
...and I 💖 emojis!
I started coding around 2010, starting with simple static websites, WordPress applications, and then tried Node.js for the first name around 2012. Since then, I have been working with Node.js. I like it a lot.
Currently, I do the best in:
★ Node.js 🚀
☆ Command line tools
☆ Express.js
☆ Passport
☆ Raw/minimal code, without frameworks (e.g. simple HTTP server)
☆ Using npm
☆ Creating npm packages for Node.js (and for the front-end as well)
☆ Scraping the web
☆ Automation of repetitive tasks
☆ Image processing
★ JavaScript ✨
☆ Creating and importing libraries
☆ jQuery (creating plugins, using them etc)
☆ Scraping
☆ Automation of repetitive tasks
☆ Publishing npm packages
☆ SVG (SVG.js, d3.js)
★ HTML & CSS 🎨
☆ Fixing CSS quick issues
☆ Implementing mockups
☆ Making the page responsive
☆ SEO tips & tricks
★ Command line 💻
☆ Shortcut tips
☆ Creating command line tools
☆ Using VIM & Tmux
★ Code Review 👀
☆ I do code review offline, for Node.js, JavaScript, eventually CSS.
☆ Can be done in a live session as well.
☆ Security checks
☆ I point things that can be done in a better way
★ Using Git & GitHub/GitLab/BitBucket etc. 😸
☆ Introduction to how Git works
☆ Using Git hosting services (e.g. GitHub, GitLab, BitBucket etc)
☆ Top Git commands
☆ Shortcuts
If I can help, I will definitely do it, as long your app is not promoting things that tend to be potentially immoral. For example, I'm happy to help you build an e-shop, but I will probably not build an e-shop designed specifically for selling wine since I am against the use of alcohol for drinking.
♦ 🚀 Node.js: 9 years of experience, ~700 packages published on NPM
♦ 💛 JavaScript: 9 years of experience, lots of libraries you can download freely (https://goo.gl/ewoQsK)
♦ 🗣 Fluent in speaking English & Romanian, and comfortable in Spanish & Portuguese
♦ 😸 GitHub Enthusiast (follow me: https://github.com/IonicaBizau)
♦ 😻 Git & GitHub power user
♦ 🍀 Comfortable with MongoDB (especially, the native driver for Node.js)
♦ ❇️ I will not charge you if I can't fix your issue.
Why you can trust me:
★ I am a vegetarian. I have never eaten meat. 🍍🥑🥗
★ I have never drunk wine, beer, etc. Water is the best. 💧
★ I work for 6 days, and I rest on the 7th day. That's why I am *not* available on Saturdays (specifically between Friday's sunset and Saturday's sunset, my location at the time—you can my timezone a little bit below). 🙏
★ I sleep between 9:18 PM and 4:42 AM. Depending on your timezone I can wake up earlier if you book a session with me. 💤
★ I am a musician (pianist and organist). 🎹
★ I use VIM on macOS and Linux. 🐧🍏
Staff Software Engineer with **8+ years of experience building scalable full-stack systems, developer platforms, and fintech integrations**. Currently at **Visa Inc.**, where I architect AI-native developer platforms and developed a **Model Context Protocol (MCP) framework** that enables LLMs to generate production-ready payment integration code while preventing API hallucinations—reducing merchant onboarding time from **30 days to 3 days**.
Strong expertise in **Node.js, TypeScript, and Java** for backend systems, along with **React.js** for building developer portals and complex frontend dashboards. Experienced in designing **REST APIs, distributed systems, SDK platforms, and secure payment architectures**. I actively leverage AI coding tools like **ChatGPT and GitHub Copilot** to accelerate development, refactor legacy systems, and improve engineering productivity across full-stack applications.
**I am a freelance software developer, a clinical counsellor and a mentor in one.**
**As a software developer,** I do contract work through my Vancouver-based company Qubiq Interactive ([https://www.qubiqinteractive.ca](https://www.qubiqinteractive.ca/)). My main focus in on custom-built applications that require a unique engineering approach, although I have extensive experience with working on more traditional consumer apps and websites as well. I am especially passionate about agent-based modeling and games development.
**As a tech counsellor** at my private practice Treerock Therapy ([https://www.treerocktherapy.ca](https://www.treerocktherapy.ca/)), I provide career counselling to individuals and team mental health consulting to tech companies. My mission is to facilitate transformation of burnout, anxiety and depression into self-actualization in my clients.
I started my career in the engineering industry in 2009 and received a PhD in Simulation of Complex Systems from the University of Southampton, United Kingdom in 2017. I have developed autonomous robot simulations, distributed data processing systems, games and websites. I trained and mentored junior programmers, led development teams and maintained strong relationships with clients. I taught software development at higher education institutions in Europe and in Canada.
I live in a small villiage in Rochester, in Kent (UK) with my wife and my son. I currently work as a Senior DevOps engineer for a fintech energy trading company, we use AWS for our infrastucture. We utilise many AWS services such as S3, RDS, EKS, EC2, ECS, DynamoDB, Reshift and others. Most of our infrastructure is written with Terraform and deployed via GitHub Actions pipelines.
I will always do my best to answer questions and provide the best help that I can. I might not always know the answer but I will do my best to give you as much information as I can to help. I am still learning myself, and I am a firm believer that a great way to enhance your own understanding of something is to explain it to others.
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Frequently asked questions
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The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Bash project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Bash request on Codementor, check out our article.
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For more answers to frequently asked questions, see here.