New Image prompts are here · A look buyers re-run in their own image model — swappable parameters they fill in, sample galleries, and the finished prompt ready to paste. Become a founding seller
MarketplacePersonas@fed
First message, every session verbatim
Senior QA Engineer

Grounds every answer in a concrete failure mode, not taste. Refuses to pad a plan; three real risks beat a hundred filler cases.

The opening turn — no prompting, no warm-up. What you install
Listing quality 1 of 4 checks
Structure disclosedEvery block named, described and costed before you install: Main prompt · Context · Rules · When responding · Output format · Tone · Greeting.
Worked exchange publishedThe seller has not published a sample exchange for this persona.
Tested models not statedThe seller has not said which models they ran this persona on.
Buyer-ratedNo reviews yet. New listing, published 2026-07-04.
Persona Tested — 3 of 3 probes passed ~263 tokens

Senior QA Engineer

Risk-ranked test plans that catch the failure that ships.

Answers testing and release-safety questions with a risk-ranked plan: what to test first, what's most likely to break, and the evidence that proves a change is safe.

Polished shop Admin Added 2026-07-04 Updated 2026-08-01
Runs in Any chat LLM · no models stated
Ships as 7 blocks · ~263 tokens
Voice Direct, evidence-driven, allergic to busywork.
Seller @fed · updated 2026-08-01
#engineer #senior #what
Free

  • Instant access
  • Full source, editable
  • Free updates
Share
01 · The persona

7 blocks, one voice, nothing hidden

Every block is named, described and costed below — only the prompt text itself unlocks.

v1 · ~263 tokens

What you install

A persona you can read the shape of end to end before you trust it with a conversation.

  • 7 source blocksMain prompt · Context · Rules · When responding · Output format · Tone · Greeting
  • Holds character under pushbackRules and behavioral notes carry through long sessions, not just the first reply.
  • Editable after accessFork any block, drop it into your own assistant, keep the parts you want.
  • Free updatesEvery later revision lands in your library automatically.
  • ~263 tokens per sessionItemised per block in section 03, so you can trim one if your context budget is tight.
Nothing locked
Personal and commercial use included. Add it once and every later version lands in your library.
Free 7 blocks
  • Main prompt 78 tk
  • Context 39 tk
  • Rules 44 tk
  • When responding 29 tk
  • Output format 34 tk
  • Tone 10 tk
  • Greeting 29 tk
Main promptThe core instruction that defines who the persona is. 78 tk
ContextBackground information and operating environment. 39 tk
RulesHard constraints the persona must always follow. 44 tk
When respondingStyle and approach for handling each message. 29 tk
Output formatStructure and shape of every response. 34 tk
ToneThe register every reply is written in. 10 tk
GreetingThe opening line of every new conversation. 29 tk
Compiled system prompt — opening block only 
You are a Senior QA Engineer. When a question is delegated to you, answer it with a
concrete, risk-ranked plan: name what to test first, what is most likely to break, and
what evidence would prove the change is safe. Rank the risks — never dump an unranked
matrix of a hundred cases; surface the three checks that catch the real failure.
The full prompt — all 7 blocks, ~263 tokens — unlocks the moment you add it. Every block, its job and its token cost stay visible above.
03 · Tokens & cost

What it costs to run

Input tokens the persona consumes at the start of a conversation, measured per block. Nothing recurs per message.

263 tokens · 7 blocks
Main prompt 78 · 29.7% Context 39 · 14.8% Rules 44 · 16.7% When responding 29 · 11.0% Output format 34 · 12.9% Tone 10 · 3.8% Greeting 29 · 11.0%
Per session 263 input tokens, counted once at the start Largest block Main prompt 78 tokens · 29.7% Blocks 7 compiled into one system prompt

Counted with a general-purpose tokenizer, so a particular model will differ by a few percent. These are input tokens only, charged once at the head of a session — output tokens usually cost three to five times more, and what you pay for those depends on the model and how long the conversation runs.

05 · Details

Specifics and common questions

v1 · published 2026-07-04
Version
v1
Licence
Personal and commercial
Blocks
7 blocks
Runs in
Any chat LLM
Voice editable
Direct, evidence-driven, allergic to busywork.
Context cost
263 tokensInput only, once per session — nothing recurs per message.
Validated
Sigrix review · 3 of 3 checks
Published
2026-07-04
Updated
2026-08-01
Rating
No reviews yet
@fed
41 listings · seller on Sigrix
Follow

Experimental bio with extra words. Experimental bio with extra words.

Sigrix team Published by the Sigrix team, not an independent seller. Polished shop A complete storefront — profile, bio and published listings.
View seller profile
  • What does Senior QA Engineer do?

    Answers testing and release-safety questions with a risk-ranked plan: what to test first, what's most likely to break, and the evidence that proves a change is safe.

  • Who is Senior QA Engineer best for?

    Senior QA Engineer is built for engineering-automation workflows. and is particularly useful for engineer, senior, and what.

  • How does Senior QA Engineer respond?

    Senior QA Engineer responds in a direct, evidence-driven, allergic to busywork. tone. Risk-ranked test plans that catch the failure that ships.

  • What output should I expect from Senior QA Engineer?

    Senior QA Engineer carries an output-format block, so the shape of every reply is specified rather than left to the model — the block itself is part of the system prompt you get on access.

  • What does it cost to run Senior QA Engineer?

    Senior QA Engineer uses approximately 224 tokens per run and the listing itself is free to claim. Token usage will vary with your inputs and the model you run it on.

More personas
Browse all personas
Engineering Team Lead Persona Free Engineering Team Lead The crew's manager: reads your question, routes it to the one specialist who owns it (QA, architecture, or design), and shapes their answer into a single response that opens with who it was routed to Toyoda Wrench AI Persona Free Toyoda Wrench AI A Toyota-specialist AI mechanic that helps owners diagnose problems, decode maintenance schedules, interpret warning lights, and make smart repair decisions — built for the most reliable cars on the road, handled by people who want to keep them that way. Bimmer Wrench AI Persona Free Bimmer Wrench AI A BMW-specialist AI mechanic that helps owners diagnose issues, decode fault codes, plan repairs, and make confident service decisions — without the dealership markup. BunkRadar AI Persona Free BunkRadar AI A myth-busting fact-checker that grades any claim — health, history, science, money, or something your uncle said at dinner — with a verdict, the evidence tier behind it, and enough comedy to make being wrong survivable. @user_fix