picked.ai/hire/backend-engineer
Hire a backend engineer
How to hire a
backend engineer.
Salary bands, time-to-fill, what good actually looks like, and the assessment we put every candidate through. Built on nine years of validated psychometric data from Neuroworx.
Post this role
~30 seconds
Title, level, three must-haves. We syndicate, screen, score, and shortlist. First 50 candidates free.
Post this role for free →
£103,500
Median salary · United Kingdom
£85-£122k senior range
42d
Typical time-to-fill
down to 3.4d with Picked
231
Applicants per role
Series A · public posting
9 / 231
Make it to interview
industry · pre-AI screening
Salary bands
What it costs to hire one.
2026 H1 · base + variable
LevelUSUKEURemote
IC1 / Junior$72-$99k£45-£62k€48-€66k$59-$82k
IC2 / Engineer$99-$138k£62-£86k€66-€92k$82-$114k
IC3 / Senior$136-$195k£85-£122k€91-€131k$112-$161k
IC4 / Staff$189-$264k£118-£165k€126-€177k$156-$218k
IC5 / Principal$248-$344k£155-£215k€166-€230k$205-$284k
Source · 2,847 anonymised offers placed via Picked Q4 2025 to Q1 2026. Updated monthly.
What good looks like
Past credentials. Present signals.
01
Systems thinking
Comfortable with eventual consistency, queues, idempotency. Has reasoned about capacity on a napkin and got within an order of magnitude.
02
Reliability instinct
Has been paged at 3am and shipped the fix that prevented the next page. Knows the difference between a workaround and a root cause.
03
Pragmatism
Reaches for Postgres before reaching for a new database. Aware of the trade-off they made and able to defend it in one sentence.
04
Cost awareness
Knows roughly what their service costs to run per month. Has cut a bill in half at least once.
05
Communication
Can write a one-paragraph explanation of a complex outage. Can read code the same way they read prose.
Nine years of Neuroworx outcome data on 14,000 backend engineer hires says: the candidates rated high on systems thinking + pragmatism outperform high-prestige-CV candidates by a wide margin in the first twelve months.
Read the paper →
What Picked puts every candidate through
Four stages. Each one written down.
From the Neuroworx item bank · 1,247 items live
01
Triage
CV + cover screened against must-haves. Title, level, language, region, three skills you set. Hard filters first. The model spends no time on people you would not even read.
~12 seconds · $0.12
02
Conversational screen
A 12-minute voice or chat conversation against six structured probes: motivation, scope of last role, the thing they are proudest of, biggest production mistake, what they would build with a free month, why this role.
~12 min · $0.31
03
Role-fit assessment
A scoped task drawn from the bank. Submit a short writeup. Scored against a published rubric on judgement, craft, and pragmatism.
30-60 min · $0.28
04
AI first-round interview
A 20-minute voice interview against six items drawn from the IC3 item bank. Includes behavioural ("tell me about a time"), technical or scenario ("walk me through how you would approach"), and an ownership probe.
~20 min · $0.24
The 1,247 items for backend engineer are split across 42 sub-rubrics. Every item has been calibrated against twelve-month performance outcomes from 14,083 prior hires.
See sample items ↗
Sample interview questions
A few from the item bank.
01
Tell me about the last service you owned past v1. What broke first in production, and what did you do?
Listen for: A specific service. A real failure mode (timeouts, lock contention, queue backup). A fix that names a trade-off.
02
Pick a part of your current backend codebase you think is wrong. Why has it not been fixed?
Listen for: A specific module or schema choice. An honest reason for the not-yet (cost, fear of migration, priority).
03
Walk me through the most recent backend change you took from spec to production.
Listen for: The whole arc, including who they convinced and what they migrated. Specific dates, specific numbers.
04
What is the smallest backend decision you have fought hardest for?
Listen for: A real example. A column type, an idempotency key, a retry policy. They say what they would do differently.
05
Pick a backend service you use daily and tell me how it probably works under the hood.
Listen for: Reasonable guesses at the boring parts: queues, sharding, cache, write-ahead logs. They name what they do not know.
See all 30 questions →
Job description template
Copy. Paste. Replace the bracketed bits.
backend-engineer.md
266 words · 3 min read
# [Senior/Mid/Junior] backend engineer · [city] or remote

We are hiring our [Nth] backend engineer. You will own a service end-to-end (currently: [the X pipeline, about Y events a day]). The team is [N] engineers. [Who else writes code]. [How you ship]. [How the on-call rotation works].

## You will be good here if

- You have owned a backend service in production past v1 and have war stories you can talk through in plain English.
- You reach for the boring, working answer first and can defend the choice in one paragraph.
- [The third trait you actually care about, with a sentence on the behaviour you want].

## What we use

[Languages, datastores, infra]. We will not retrain you on a stack, but we do not care if you came from [adjacent stack] as long as you can show us a post-mortem.

## What you will not get

A microservice for every noun. A four-hour standup. A CTO who avoids the on-call schedule.

## Compensation

[Currency][low] to [high] base. [low] to [high] percent equity. We post the band because we mean it and we will not negotiate against ourselves.

## How we hire

30-second post, screen plus assessment via Picked, 20-minute interview via Picked, one on-site half-day with the team. We aim to give a yes or no in 7 days.

## What is the rubric

Systems thinking, reliability instinct, pragmatism, cost awareness, communication. Not credentials.

That is the JD. Apply via [link], or just send a paragraph about the last service you owned past v1 and what broke first.

[Your name], [your title]
Full JD template page →
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Hire backend engineers · Picked.ai