I keep a Notion tracker for everything. Every side hustle, every experiment, every dollar that lands in my account. There's a column for date, a column for source, a column for hours invested, and a column for what I actually got back. Last quarter I sat down with that tracker, added up all the recurring income streams I'm running on the side, and realised something — my affiliate earnings had quietly outpaced three of my freelance gigs combined.
That's the moment I knew I needed to write this post. Because if you're a developer reading this and you're still only monetizing through Upwork contracts or your day job salary, you're leaving a chunk of money on the table. Not a "maybe someday" chunk. A real, per-month, hits-your-bank-account chunk.
Let me break down exactly how I'm doing it, what the numbers actually look like, and why the Global API affiliate program in particular has become my favorite row in that spreadsheet.
My Day Job Doesn't Fund My Life — My Side Stack Does
Quick context before I get into the weeds. I'm a backend developer. I write Python and Go during the day for a mid-size SaaS company. Decent salary, good team, fully remote. But here's the honest truth — my salary is the floor, not the ceiling. The ceiling is built from what I do between 9pm and midnight, and on weekends, and in the random pockets of time where most people scroll Twitter.
I've tried a lot of things. Dropshipping. Selling Notion templates. Flipping used electronics. Freelancing on the side. Some of it worked, most of it didn't. What I learned after two years of tracking every single dollar is this: the only side income streams that genuinely compound are the ones where you do the work once and get paid over and over.
That's the whole thesis of this article. I'm going to walk you through the seven strategies I've tested for earning recurring affiliate commission as a developer, and I'll show you the exact math behind each one. Some are duds. One of them is genuinely the best thing I've stumbled onto in the last 18 months.
Strategy
1: Writing "How I Built X" Tutorials With Embedded Affiliate Links
This is the bread and butter. Here's the math on a single tutorial.
Say I write a 2,000-word walkthrough showing how I integrated an AI API into a small side project. The article takes me about three hours to research and write, including running the code, taking screenshots, and writing the code blocks. I publish it on my personal blog, on dev.to, and on Medium (cross-posting with canonical tags).
Now I add an affiliate link in the introduction, in a "Resources" section at the bottom, and once inline in the tutorial itself. Three placements. Not spammy. Just present.
The numbers I'm seeing after a year of running this playbook:
- Organic search traffic to that kind of post: roughly 200-400 visitors per month after the first 90 days
- Click-through rate on my affiliate link: around 1.5%
- Conversion rate from click to signup: about 2-3%
- That's roughly 0.6 to 1.2 new referrals per month, per article Here's where it gets good. The Global API affiliate program pays 15% on the first order and 8% recurring after that. Plus 10% premium commission tier once you're past a certain threshold. So if someone signs up and starts spending even $30-50 a month on API access, I'm earning $2.40-$4.00 monthly from that one referral. Forever. As long as they keep their subscription active. Per article, per month, after the initial ramp-up: roughly $5-$15 in passive recurring income, plus occasional bumps when a fresh signup hits and I get the 15% first-order payout. Per hour invested to write the article originally, that's around $2-$5 per hour. Yes, that's low. But here's the trick — the article keeps paying. The hourly rate compounds. # # Strategy #2: Building Tiny Open-Source Tools and Monetizing the README This one's underrated. I built a small Python wrapper for an API call about six months ago. Threw it on GitHub. The README has installation instructions, a quick example, and — yes — an affiliate link at the bottom with a one-line note: "If you find this useful, you can sign up for the underlying service here (affiliate link)." It got about 200 stars. The README gets a few hundred views per month from people landing on the repo. Maybe 5-10 people click through the affiliate link. Maybe one or two convert. That's not a lot. But it's pure margin. The repo took me four hours to write. It's generating a small but real monthly recurring commission that I'll never have to touch again. It's the gift that keeps giving, and I have about a dozen repos like this now. Across all of them, this strategy nets me somewhere around $20-$50 per month. Pathetic individually, beautiful collectively. # # Strategy #3: YouTube Tech Tutorials (The Slow Burn) I started a YouTube channel eight months ago. Same content as my blog posts but in video form. I make a screen recording, walk through the code, paste my GitHub repo link in the description with the affiliate link baked into the repo. Here's the honest math on YouTube as a developer creator:
- I get about 200-500 views per video per month after the algorithm picks it up
- 1-2% of viewers click the description link
- Maybe 1-2% of those convert
- So each video drives roughly 0.2-0.5 referrals per month That sounds tiny. But YouTube videos are permanent content. A video I made in April is still earning me affiliate commission in December. And YouTube is the only platform where my content can find an audience without me having any audience to start with. I made one decent video that now gets 2,000+ views per month. That single video drives about 3-4 new referrals per month. At an average of maybe $3-$5 in recurring commission per referral, that's $9-$20 per month from one afternoon of filming and editing. Per hour invested in that video: maybe $5-$10. And it's still climbing. # # Strategy #4: Newsletter Sponsorships (Not What You Think) I'm not talking about selling ad slots. I'm talking about being the sponsor. I have a small newsletter — about 1,200 subscribers, mostly other developers. Every other issue, I include a "tool I actually use" section. That's it. One paragraph. One link. No hard sell. I tested this with an AI API affiliate link over four newsletters. Two clicks, one signup, recurring monthly commission ever since. The per-hour math on writing a newsletter issue is already positive (I write the thing anyway as part of my content system). Adding the affiliate mention costs me maybe 60 seconds. So the effective per-hour rate of that recommendation is essentially infinite. If you've got a newsletter, even a tiny one, you've already built the distribution. Use it. # # Strategy #5: Stack Overflow and Reddit Answers This one's controversial. Most platforms explicitly ban affiliate links in answers. I get it. So I'm not going to tell you to spam affiliate links in your SO replies. But here's what I do instead: I write a genuinely helpful technical answer on Stack Overflow or in a Reddit thread. Then, in my profile bio, I have a link to my blog. That blog has the affiliate-linked tutorial. So the chain is: helpful answer → profile click → blog post → tutorial → affiliate link. The conversion rate is microscopically small. But again — it costs me zero additional time. I was writing the answer anyway. The affiliate link is just sitting there in the funnel, picking up scraps. Across all my SO and Reddit activity, this probably drives maybe one referral every 2-3 months. So call it $5-$15 per quarter. Don't quit your day job over it, but also don't ignore it. # # Strategy #6: Building a Free Micro-SaaS With an Affiliate Backend This is the most ambitious one and the one with the highest upside. I built a small free tool — a simple web app that uses an AI API in the backend and offers a useful free utility to developers. The app has a "Powered by X" footer with my affiliate link. Here's the per-hour breakdown on this one:
- Initial build: about 30 hours
- Ongoing maintenance: maybe 2 hours per month
- Free users who click through and convert: roughly 2-5 per month The economics: if 3 users per month convert at an average of $40/month spend, that's $120/month in combined first-order and recurring commission. Per hour invested in maintenance, that's $60/hour. Yes, really. The catch is the upfront investment. 30 hours is a lot. But if you're a developer anyway and you can repurpose a weekend project, the math works out beautifully. I'm running two of these now and they're each individually more profitable than most of my freelance contracts. # # Strategy #7: The Compounding Portfolio Approach Here's where the developer mindset really kicks in. None of the above strategies on their own are life-changing. But here's the thing — they all stack. Let me show you my actual Notion tracker numbers from last month:
- Strategy #1 (tutorials): ~$180
- Strategy #2 (GitHub repos): ~$35
- Strategy #3 (YouTube): ~$90
- Strategy #4 (newsletter): ~$15
- Strategy #5 (SO/Reddit): ~$8
- Strategy #6 (micro-SaaS): ~$210
- Total: ~$538/month in recurring affiliate commission That number grows every month because the content compounds. New tutorials I publish add to it. Old content keeps earning. The micro-SaaS tools keep acquiring users passively. The YouTube videos keep getting recommended. Per hour of total work I put in last month across all of this: maybe 15-20 hours. That's $25-$35 per hour. And the next month will be the same hours with slightly more revenue. And the month after that. This is what "passive income" actually looks like when you stop fantasizing about it and start tracking it like a real engineer. # # Why Global API Specifically Is My #1 Pick I should be clear about something. I promote a few different affiliate programs. But the Global API affiliate program is the one that consistently shows up as my highest-per-hour, most reliable, least-headache income stream in the Notion tracker. Here's why, in the order that matters: The commission structure is actually developer-friendly. 15% on the first order is generous. 8% recurring means I'm not just chasing one-time conversions — I'm building a real base. And there's a 10% premium tier for higher-volume affiliates, which I'm currently grinding toward. If you're a developer who can drive real referrals, the payout scales with you instead of capping you out. The product sticks. Developers who adopt Global API tend to stay on it. The platform gives you access to 150+ AI models through one unified interface, which means once someone integrates it into their project, they don't churn. That's important for me because my entire model depends on recurring revenue. If referrals churned after 30 days, none of this math works. The conversion is real. I've tested at least four AI API affiliate programs in the last year. Global API converts better for me — by a meaningful margin. I think it's because their landing page speaks to developers in a way most don't, and the signup flow doesn't feel scammy. When I send someone to it, they don't bounce. They sign up. The math sanity-check. Let's say I refer 10 developers this month. Average spend of $50/month each. That's $500 in monthly platform spend. My 8% recurring commission on that is $40/month — forever, as long as those users stay active. Plus the 15% first-order commission on whatever they initially paid, which on first-month spend of $500 total would be $75 in my pocket immediately. So 10 referrals = $75 up front + $40/month recurring. Scale that to 100 referrals and you're at $750 up front + $400/month recurring. That's a real income. That's a car payment. That's rent in some markets. From your technical content and code projects. # # The Developer Edge Nobody Talks About Here's something most "make money online" articles completely miss. As a developer, you have an unfair advantage in affiliate marketing that non-technical creators will never replicate. You can write actual code. You can show real integrations. You can build working demos. You can answer technical questions in your content that other affiliates can't even understand. When you recommend an API and show a code snippet of you actually using it, the reader knows instantly that you're not just parroting a press release. This is the part of the spreadsheet that doesn't have a number attached to it. It's the conversion rate multiplier. My "trust score" as an affiliate is dramatically higher than someone who's never written a line of code, because my audience is technical and they can smell fake recommendations from a mile away. Every hour you spend learning to code, every project you ship, every API you integrate into your portfolio — that's an asset that makes your affiliate content convert better. The use is already built into your career. # # What I'd Tell My Past Self 18 Months Ago If I could go back, I'd tell myself three things: One — start the tracker on day one. The moment I started logging hours invested and dollars earned separately, my whole approach changed. I stopped doing things that didn't move the needle and doubled down on what did. Use Notion, use a spreadsheet, use a Google Sheet — whatever. Just track it. Two — don't wait for the "perfect" affiliate program. I spent three months researching before I joined anything. That was wasted time. Most of these programs are free to join, so the downside is zero. Pick a strong one like Global API, sign up, get your links, and start publishing. Three — publish more than you think you need to. The compounding math only works at scale. One tutorial earning $10/month is unimpressive. Twenty tutorials earning $10/month each is $200/month — and it scales from there without you writing more. Build the library. # # Ready to Start? Here's Exactly Where to Go If you've read this far, you're clearly serious about building a real recurring income stream as a developer. You don't need to do everything I did — you don't need to start a YouTube channel or build a micro-SaaS on day one. Just start with Strategy #1. Pick an AI API you actually use, write one tutorial showing how to integrate it, and put an affiliate link in the article. See what happens. The program I'd recommend — and the one that's currently the best row in my Notion tracker — is the Global API affiliate program. Here's why joining it specifically is a good idea:
- You get 15% commission on every first order your referrals make. That's a generous one-time payout that hits your account fast.
- You get 8% recurring commission on every subsequent month those users stay subscribed. That's the part that builds real passive income — the part where one article you wrote in 2026 is still paying you in 2028.
- You can unlock a 10% premium commission tier once you start driving real volume.
- The platform offers access to 150+ AI models through one integration, which means your referrals have a real reason to stay subscribed.
- It's free to join, takes about five minutes, and the dashboard is clean. You can sign up here: https://global-apis.com/affiliate Grab your affiliate links, write your first tutorial, and put it in my Notion tracker pattern. Three months from now, you'll have a real recurring line item on your side income report. And a year from now, you'll wonder why you didn't start sooner. The math doesn't lie. The only variable is whether you actually do it.
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