Software Engineering · Interview Prep · Career Growth · capacitadev.io

The technical roadmap
nobody gave you.

Deep-dive posts, coding challenges, and system design walkthroughs — structured by seniority level so you always know what to learn next.

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// tracks

Five paths. One direction.

Every post, exercise, and challenge is tagged to a seniority level — so the content always matches where you are and where you want to be.

Junior
Core fundamentals, OOP principles, and the foundational patterns every professional developer needs to own.
Intermediate
Design patterns, SOLID principles, testing strategies, and clean architecture in real codebases.
Senior
Distributed systems, database internals, concurrency patterns, and architecture decisions that actually scale.
Staff
System design at scale, technical leadership, cross-team influence, and engineering strategy.
AI Engineer
LLMs, RAG, embeddings, agents, and the AI concepts every modern developer needs to understand.

// what you'll find

More than articles.

CapacitaDev is built to make concepts stick — through writing, hands-on practice, and real interview context.

01
Deep-dive posts
Thorough technical breakdowns with real code examples, edge cases, and the "why" behind every decision. Not surface-level overviews.
02
Code exercises
Practice problems with model solutions and commentary — not just the answer, but how to reason through it in an interview.
03
System design walkthroughs
End-to-end breakdowns of real architectures — notification systems, rate limiters, payment processors — with trade-off analysis.
04
Interview framing
For each concept: not just what it is, but how to articulate it at the right depth in a Senior or Staff interview.
05
Level roadmaps
Curated reading paths per track — what to study, in what order, with no guesswork, from your current level to your target role.
06
Weekly newsletter
One concept, one challenge, one resource — every week. A consistent learning habit that compounds over time.

// recent posts

Start reading.

New content published regularly across all five tracks.

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AI Engineer Foundations

Your Function Signatures Are Precise. Your Prompts Aren't

A prompt is a specification, not a message. Each part of its anatomy does something distinct, and leaving any part out means the model fills the gap with its most generic guess.

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// free resource

Start with the free guide.

A curated PDF covering the concepts, patterns, and frameworks most commonly assessed at Senior and Staff-level interviews.

✓ System design fundamentals ✓ Behavioral question frameworks ✓ Distributed systems patterns ✓ Technical depth by level
↓ Download the free PDF