"I want to start a programming side hustle, but I don't know where to begin." "Can I really earn money as a complete beginner?" — Sound familiar?
The answer is yes — with the right steps, even programming beginners can realistically aim to earn ¥100,000 per month through side work. More companies are allowing side jobs, and demand for programming projects continues to grow due to the ongoing IT talent shortage.
This article covers everything from an overview of programming side hustles, to which languages to learn, how to find projects, and a complete roadmap to reaching ¥100,000 per month.
With the push for DX (Digital Transformation), demand for professionals who understand both business processes and system development has surged. Companies increasingly outsource work to freelance and side-job talent. Even beginners have a real chance to enter this market once they acquire the right skills.
Programming side work only requires a computer and internet connection, making it location-independent. You can use commute time or weekends, making it one of the easiest side hustles to balance with a full-time job.
Programming skills gained through side work can also improve your efficiency at your day job or serve as a powerful asset when changing careers. Unlike many other side hustles, this one builds real-world experience that increases your market value.
This involves converting design files into HTML, CSS, and JavaScript. Some projects provide templates, making them popular first projects for beginners. Landing page (LP) coding is especially in demand, with earnings of several tens of thousands of yen per project.
These projects involve design changes, mobile optimization, or form bug fixes on existing websites. They can typically be completed quickly, making them easy to fit into spare time.
WordPress site building and theme customization is an extremely high-volume niche. Adding PHP basics on top of HTML/CSS broadens the range of projects you can take on.
These projects use Python for spreadsheet automation, data collection scripts, and more. They command higher rates once you have the skills.
Frontend development with React or Vue.js, or mobile app projects, command high rates. They require intermediate-level skills but are the target area for consistently earning ¥100,000+ per month.
If your goal is earning through side work, start with languages that have high project volume and low learning cost.
HTML/CSS (Essential) — The foundation of all web work. Learn in 1–2 weeks. JavaScript (Essential) — The most in-demand language for side projects. Start here if you're unsure. Python (Recommended) — Simple syntax, high demand in data analysis, automation, and AI. PHP (For WordPress) — Essential for WordPress customization; learn alongside JavaScript for maximum project range.
Step 1: Set Goals and Check Your Employer's Side Job Policy (Week 1). Step 2: Learn the Fundamentals — HTML/CSS then JavaScript (Months 1–2). Step 3: Build a Portfolio — Create 2–3 sample landing pages or websites (Month 3). Step 4: Start Taking Small Projects on crowdsourcing platforms like CrowdWorks or Lancers to build reviews (Month 4). Step 5: Scale Up — Pursue higher-paying projects and expand skills into React, WordPress, or Python automation (Months 5–6). ¥100,000/month is achievable with combinations like two ¥50,000 projects or three to four ¥30,000 projects.
Crowdsourcing sites (CrowdWorks, Lancers) are ideal for building initial track records. Freelance agents (Levtech Freelance, IT Pro Partners) offer higher-paying projects for those with some experience. Direct outreach via X (Twitter) or LinkedIn can lead to referral-based work with no intermediary fees.
Manage your time so your day job doesn't suffer — define your weekly hours and stick to them. Don't forget tax filing — a tax return is required if side income exceeds ¥200,000/year. Leverage AI tools — in 2026, AI coding assistants like GitHub Copilot and Cursor are becoming essential for working efficiently.
The key to earning ¥100,000/month through programming is not to wait until you're perfect, but to learn by doing. Master the basics of HTML/CSS and JavaScript, build a portfolio, and start accumulating experience with small crowdsourcing projects. Within six months, ¥100,000/month becomes a realistic target. Always balance your side hustle with your main job, and grow your career and income at a pace that works for you.
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