Istanbul Software Engineer: Full-Time Affiliate in 6 Months

In January 2025, Eren — a 31-year-old senior backend engineer at Trendyol's Şişli office in Istanbul — started affiliate work as a side hustle. By month six his MRR exceeded his net salary; he resigned in month seven and reached 58,000 TRY monthly by month eleven.

Six Months of Parallel Work

Eren ran microservice architecture for Trendyol by day and worked affiliate from 20:00-23:00. The first three months focused on technical blog posts (Next.js plus QR menu integrations) and building a LinkedIn network among Turkish restaurant owners. February commissions were 2,400 TRY, March 5,800, April 11,200.

May and June emphasized SEO content (15 long-form posts) and in-person meetings with Istanbul cafe owners, bringing MRR to 19,500 then 28,700 TRY. Early July hit 32,000 TRY against a net salary of 30,000 — the crossover moment.

The Resignation Threshold: 90-Day Rule

Eren's quit decision was mathematical, not emotional. His threshold required three conditions:

• 90-day average MRR > net salary × 1.1 (10% safety margin)
• Emergency fund: Six months of living expenses in cash (180,000 TRY for Eren)
• Churn check: Active restaurant count climbing three consecutive months (low refund risk)

The May-June-July average was 26,700 — below the bar. August 38,400 and September 44,100 pushed the trailing average to 41,000 by early October, and he resigned. This discipline avoided the classic "I'll quit the first month I cross salary" mistake.

Productivity Surge After Going Full-Time

With no standup, code reviews, or on-call, Eren put 6-7 focused hours into affiliate daily. His first freelance month produced 14 new Pro activations — double his best month while employed.

By month eleven MRR was 58,000 TRY: 142 active restaurants at an average commission of 408 TRY/month. After SGK and tax his net was 47,000 — 57% above his old salary, plus location and schedule freedom.

FAQ

Aren't Istanbul software salaries too high to beat with affiliate? For the first four months, yes — Eren made 2,400 TRY in February. But lifetime commissions compound; by month six he passed salary and kept growing.

What about losing Trendyol stock options? Eren had two years of vesting left, worth roughly 380,000 TRY. The decision relied on a projection that affiliate would cover the loss within 12 months — it actually did by month 14.

Can a non-software engineer replicate this? Yes, but the technical-blog advantage matters. Non-engineers can substitute with face-to-face sales and an existing restaurant-owner network; timelines may stretch to 8-10 months.

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