Originally published on the revin.com.br blog.
In 2024 the title 'senior' on LinkedIn was already inflated; in 2026 it lost meaning entirely. A dev with 3 years calls themselves 'senior'. A dev with 8 years calls themselves 'principal' to differentiate. Resumes became aesthetic, not evidence.
Revin developed a 4-hour protocol that separates real seniors from inflated resumes. We apply it to every candidate entering our pool before allocation to a client. This protocol is the structural differentiator that allows Revin to deliver real senior squads — not squads with senior labels.
For founders and CTOs who need to hire senior engineering (internal or external) and want a method beyond 'I liked the interview'.
Pairing on a real problem is the cheapest, most predictive seniority test
⏱️ The 4 hours of the protocol
Hour 1 — Structured technical conversation (no code)
Tech lead runs 1 hour of conversation about 3 technical decisions the candidate made in the last 2 years. For each: context, alternatives considered, decision, trade-offs, outcome, what they'd do differently today. Real seniors answer in layers; mid-levels answer on the surface.
Hour 2 — Pair on a real problem from our backlog
Not leetcode. A real problem from a current client (anonymized): "how would you approach this?". The 'right' answer isn't what matters — what matters is how the candidate decomposes, asks, frames hypothesis, validates. Real seniors lead; mid-levels wait for direction.
Hour 3 — Reverse code review
We show a production PR (anonymized) and ask: 'what would you review? what would you approve? what would you push back on?'. Real seniors raise 5-10 relevant points; mid-levels get stuck on code style.
Hour 4 — Conversation about team and product
How does the candidate handle a counterintuitive product decision? How do they communicate tech debt to non-technical people? How do they react when a mid-level disagrees in review? Real seniors have framework; mid-levels improvise.
🚫 The 4 false signals of seniority
Years of experience: 10 years redoing the same CRUD = 1 year repeated 10 times.
Famous company logos on the resume: passed through FAANG but on non-critical team = no proof of seniority.
Knowing many languages: shows curiosity, not maturity.
Certifications: validate theoretical knowledge, not decision under pressure.
A managed squad only delivers real seniority when running its own filter — not when relying on recruiters
✅ The 4 real signals of seniority
Articulates trade-offs explicitly. A senior says "I picked X because we gain A, lose B; worth it in our context".
Recognizes own mistakes in past decisions. A senior says "that taught me to..."; a mid-level says "leadership imposed it".
Asks about business before proposing technical solution. A senior asks "which metric will change?"; a mid-level dives into code.
Mentors others without being asked. A senior naturally lifts the team; a mid-level optimizes their own output.
🛠️ How to apply this in your own hiring
The protocol works for direct hiring. Adapt:
Hours 1 and 2 with your current tech lead.
Hour 3: prepare a real PR from your repo (anonymized if sensitive).
Hour 4 with PM or product director, not only technical.
Total: 4 hours, 1 day. Works better than 4 separate 1-hour interviews — you see the candidate in 4 different dimensions in sequence.
📢 Want Revin to assess seniority in your current team or help hire? Book a Diagnostic Sprint — the protocol can be applied to both candidates and existing teams.
🎯 Conclusion: real seniority is measurable; a LinkedIn label isn't
LinkedIn democratized the title 'senior' to the point of uselessness. Whoever needs real seniority needs a protocol. Revin has run ours since 2023 — that's why we deliver consistent senior squads, not squads with pretty resumes.
📢 See the cases to see where Revin senior squads have delivered.
Read more at revin.com.br.
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