90-Day English Deep Dive for Backend Developers

This programme is designed for mid-to-senior backend developers who already have a working knowledge of technical English but want to reach fluency in system design discussions, architecture reviews, leadership communication, and conference-level presentations. It builds on the vocabulary from the 30-day path.

You should be at B2 level or above — able to communicate confidently in English technical discussions. This path advances your vocabulary into C1 territory: nuanced negotiation language, complex architecture vocabulary, and the precise English needed for technical leadership roles.

Each week is structured for 1–2 hours of focused study spread across the week: 3–5 resources per week averaging 20–30 minutes each. You can fit this into a busy schedule by spreading the resources across weekday evenings.

The 30-day path is organised by individual days covering core vocabulary and communication patterns. The 90-day path is organised by weeks with themes that build toward advanced fluency: Phase 1 establishes foundations, Phase 2 develops intermediate communication and writing skills, and Phase 3 covers system design, leadership, and conference-level English.

Yes. Week 7 focuses specifically on technical writing: professional emails, pull request descriptions, and documentation language. Phase 2 throughout develops written communication skills so you can write clear, professional technical content for both internal and external audiences.

Phase 3 covers the most advanced vocabulary for backend engineers: system design and distributed systems language, incident response communication, leadership and mentoring vocabulary, negotiation and salary discussion language, and the presentation skills needed for conference talks and architecture reviews.

Yes, if your English is already at B2+ and you have experience in backend development roles. Phase 1 of the 90-day path revisits foundation vocabulary at a faster pace. However, if you are unsure, completing the 30-day path first will give you a stronger base to build on.

Yes. Phase 3 is specifically aimed at senior and staff-level engineers. Weeks 9 and 10 cover system design and architecture vocabulary, week 11 focuses on leadership and mentoring language, and weeks 12 and 13 cover negotiation and high-stakes technical communication — all areas where architects and staff engineers need precise English.

The 90-day path provides a curated sequence — each phase builds on the previous one, vocabulary compounds over time, and the progression from foundations through intermediate to advanced follows a deliberate pedagogical order. Browsing exercises randomly misses the cumulative effect of structured, sequential learning.

After completing the 90-day path, you will have covered all core and advanced English for backend development. Next steps: maintain active vocabulary by applying it in real work, explore the Backend Developer guide at /guides/backend-developer/ for reference, contribute to open source projects in English, or explore the DevOps/SRE 90-day path to complement your skills.