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CASE FILE · COHORT 2023

Lucian Mot

// Full-stack Developer · London, UK

Senior levelSalary increase

THE STORY

Lucian’s Path To Senior

  1. 01

    Lucian was a solid full-stack developer in London. Solid is exactly the level companies underpay.

  2. 02

    He built senior depth on both sides of the stack: architecture, API and data design, testing, system design.

  3. 03

    He reached senior level. The market repriced him.

  4. 04

    Around 80% more salary. His numbers.

WHAT LUCIAN MASTERED

Software architectureAPI & data-layer designTesting across the stackSystem design interviewsSenior-level fundamentalsJavaScript internals
My salary improved by around 80%. This is amazing.
— LUCIAN MOT

Find Your Gaps To Senior.

20 minutes, zero fluff. Test yourself on the same dimensions Lucian mastered — and get a breakdown of exactly what to work on next.

Dragos and Bogdan Nedelcu, founders of theSeniorDev

Your Skill Breakdown

Architecture46%
System Design34%
Testing & CI71%
AI Fluency28%

THE OUTCOME

What changed at Senior level

SALARY

≈+80%Lucian’s own numbers

IN LUCIAN’S WORDS

“My salary improved by around 80%. This is amazing.”

THE SENIOR JOURNEY

The senior skills Lucian built

Getting to senior isn’t about learning another framework. Lucian’s path covered the dimensions that actually move an engineer up a level — the same areas theSeniorDev coaches every member through:

01

System Design & Frontend System Design

Lucian learned to lead system design and frontend system design discussions — scalability, data flow, and architecture trade-offs — the conversations that separate a senior full-stack developer from a mid-level one.

02

Technical & Live-Coding Interviews

Instead of memorising answers, Lucian built a repeatable process for technical interviews, live-coding challenges, and take-home tasks — shipping production-ready solutions under pressure.

03

Fundamentals: Testing, Performance & Software Architecture

Lucian went deep on the senior fundamentals — testing, performance, and software architecture — and the mental models that outlast any framework or library.

04

The Full Software Lifecycle: Backend & Cloud

Moving beyond the framework, Lucian grew across the full stack — backend and cloud — to deliver end-to-end and become the go-to engineer on the team.

05

Selling Yourself & Communicating Senior-Level Value

Lucian learned to communicate real engineering value — a senior-level CV, LinkedIn, and STAR interview stories — so the level showed long before the offer landed.

Dragos presenting software engineering concepts

Find Your Technical Gaps.

Test your skills against real technical interview questions and find out what to focus on next.