Prolific
prolific.com
Actively hiring
AI Research Labs
LLM & Generative AI
Artificial Intelligence
Market Research
AI Training Data & Annotation
As featured in
View 19 jobs
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$48.6M
2 rounds on record
Latest round
$16.6M
Venture round · Apr 2023 · 3 yr ago
Team
51-200
employees, estimated range
Hiring now
29
+5 posted in 30 days
Backers
2
Y Combinator, Oxford Science Enterprises
The money's age
Long since its last round
41 months since the last round · and hiring
Momentum
47/100
hiring for its size, a new city, in the news, rising traction
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
May 19
First executive search VP of Marketing
May 12
First sales or marketing role Strategic Partner Lead
Apr 25, 2023
Raised a round Venture round $16.6M · SEC Form D
2022
Raised a round Series A $32M
Jun 2019
Went through Y Combinator
May 13, 2019
Incorporated PROLIFIC HOLDINGS LIMITED · Companies House
2014
Founded
Tractionpublic signals, read monthly
Web presence
top 0.32%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Apr 2023 | $16.6M | — | SEC Form D |
| Series A | 2022 | $32M | — |
Registers and programsofficial lists and records that name the company
| Legal entity | PROLIFIC HOLDINGS LIMITED | Companies House |
| Registered | 13 May 2019 |
Founders and leadersfrom filings, registers and the company's site
Phelim BradleyCo-Founder & Chief Executive Officer
Katia DamerCo-Founder
Backed byfrom the funds' portfolios and accelerator catalogs
Y Combinator 
Oxford Science Enterprises Investors in similar startupsfunds that back the companies most like this one
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How Prolific hires
Truth index
B 78/100
Median time to fill
64 days
Ghost roles
0%
Stale roles
67%
Reposted roles
0%
Prolific scores B on the Alion truth index (A is best, E worst), measured over 15 open roles re-checked against its own hiring board: 0% look like ghost listings, 67% have gone stale and 0% are the same role posted again. Its roles close in a median of 64 days. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Overview
Prolific is a British research technology company founded in 2014 by Oxford researchers that connects scientists, businesses and AI developers with a vetted pool of paid human participants. Its platform handles recruitment, demographic targeting, fair-pay enforcement, fraud screening and payment so studies return usable data instead of bot or duplicate responses. Originally built for academic behavioural research, the company now also supplies human feedback, preference data and evaluation for machine learning teams, and is headquartered in London with a large United States presence.
News
Defining AI Psychosis. Part 2: "Prolific AI Psychosis"
AI tools are one part senior engineer and one part toddler-running-across-white-carpet-with-a-jug-of-red-Kool-Aid. Your job is to determine which is which.
Read more
Report
Adult Film Producer Unmasks Prolific 'John Doe' Torrent Pirate as Meta Executive TorrentFreak
A routine John Doe lawsuit could become part of Strike 3 Holdings' $446 million AI training case against Meta.
Read more
Report
Hundreds of prolific Wikipedia editors are threatening to go on strike
After layoffs at the Wikimedia Foundation, which supports Wikipedia, volunteer editors of the encyclopedia are discussing striking in protest.
Read more
Report
Altman forced to confront claims at OpenAI trial that he's a prolific liar
Very painful": Altman relives his Muskian reaction to losing control over OpenAI.
Read more
Report
Prolific Machines sets monoclonal antibody manufacturing record with light-controlled platform
Read more
Report
Prolific Chinese State-Sponsored Contract Hacker Extradited from Italy
Xu Zewei (徐泽伟), 34, of the People's Republic of China was extradited to the United States this weekend and appeared today in U.S. District Court in Houston on a nine-count indictment related to his involvement in computer intrusions between February 2020
Read more
Report
Show more news
Tech stack
Technologies named in job postings at Prolific over the last 12 months, by layer, with the share of postings for each.
Technologies in use
56
Postings analysed
35
Stack modernity
75/100AI adopter
Languages
Python71%
JavaScript43%
TypeScript43%
SQL34%
Frameworks & libraries
Django40%
Vue.js37%
Celery34%
Django REST Framework34%
Databases
DynamoDB34%
PostgreSQL11%
ElasticSearch6%
Cloud & platforms
Kubernetes49%
GCP49%
Datadog43%
AWS40%
AI & ML
LLM14%
Sign in to see how your skills match this stack
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Full Prolific tech stack
56 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$245k
Typical range
$240k – $250k
Open positions
2
1
Jobs
Senior
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 1 | $250k | $250k |
Highest paying role
Senior Product Engineer
$250k
Normalized to USD per year
Products
API
The Prolific API lets research platforms and internal tools create studies, manage submissions and issue payments programmatically. It integrates with common survey and experiment software.
prolific.com
AI Data Services
The AI data service supplies human preference, annotation and red-teaming data for model training and evaluation. It gives AI teams access to specialist participants under managed quality controls.
prolific.com
Participant Pool
The participant pool is a vetted global panel of people who have passed identity and attention checks. Detailed demographic profiles let researchers draw representative or highly specific samples.
prolific.com
Studies
Prolific Studies is the core platform for launching surveys, experiments and tasks to a targeted participant sample. Researchers set eligibility filters, pay rates and sample size, and the system manages recruitment and payment.
prolific.com
People
Phelim Bradley
Co-Founder & Chief Executive Officer
Phelim Bradley co-founded Prolific while completing a doctorate at the University of Oxford and leads it as chief executive. He drives the company's expansion from academic research into AI training data.
Katia Damer
Co-Founder
Katia Damer co-founded Prolific and shaped its early product and participant experience. Her background is in psychology and behavioural research methodology.
Sam Harman
Director
Omri Benayoun
Director
Enrico D'Angelo
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
72/100
Growing
Open positions
29
5 opened / 11 closed in 30 days
Median time-to-fill
64 days
faster than 20% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Backend
23% ▲
Product
19% ▼
Field & Service
15% ▲
DevOps
8% ▲
Leadership
8% ▲
Analytics
8% ▲
Actively hiring for Field & Service (+3 in 30 days)
Activity Timeline
New location: London
Oct 2026
New location: Mexico
Oct 2026
Added Recommender Systems to stack
Oct 2026
New location: United States
Oct 2026
Added Langfuse to stack
Sep 2026
Added Looker to stack
Sep 2026
Added Machine Learning to stack
Sep 2026
Added OWASP to stack
Sep 2026
Added Zapier to stack
Sep 2026
Added FastAPI to stack
Sep 2026
Added AI Agents to stack
Sep 2026
Added Agile to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
3
Hiring now
3
Countries
3
Busiest office
London
Loading the map
Headquarters
Builds here
Office with open vacancies
Tap a pin for the office
London
United Kingdom
HQ
Prolific - Remote UK
15 open roles 9 posted in 90 days 53% engineering 93% remote 50-200 est. staff
hires for Backend, Analytics, Design
New York
United States
Sales office
Prolific - Hybrid US
4 open roles 7 posted in 90 days 25% engineering 50% remote 50-200 est. staff $245k Avg Salary
hires for Backend, Sales, Customer Success
Mexico City
Mexico
Engineering / R&D
Prolific - Remote Mexico
1 open roles 1 posted in 90 days 100% engineering 1-10 est. staff
hires for Backend
Jobs
≈ $50k – $105k per year (Estimated) • Remote (United Kingdom) • London
SQL
LookML
AI/ML
Cursor
Claude Code
Model Context Protocol
dbt
AI Agents
LLM
LLM Guardrails
Agentic Workflows
DevOps
GCP
AWS
Apply
≈ $65k – $146k per year (Estimated) • Remote (United Kingdom) • London
Python
TypeScript
Terraform
GCP
Helm
Datadog
GitOps
ArgoCD
AWS
Kubernetes
Google GKE
Cybersecurity
ISO 27001
SOC 2
Apply
≈ $77k – $168k per year (Estimated) • Remote (United Kingdom) • 5+ years exp • London
Python
JavaScript
TypeScript
Django
Celery
Django REST Framework
Databases
PostgreSQL
DynamoDB
Frontend
Vue.js
DevOps
GCP
GitHub Actions
CircleCI
Datadog
AWS
Kubernetes
Amazon EventBridge
Apply
≈ $98k – $183k per year (Estimated) • Remote (United Kingdom) • Master's Degree • London
Python
AI Agents
Recommender Systems
Apply
≈ $61k – $116k per year (Estimated) • Remote (United Kingdom) • London
Python
SQL
Tableau
Metabase
Looker
Apply
≈ $68k – $132k per year (Estimated) • Remote (United Kingdom) • London
Figma
Apply
≈ $84k – $157k per year (Estimated) • Remote (United Kingdom) • London
Python
JavaScript
TypeScript
SQL
FastAPI
Databases
PostgreSQL
AI/ML
Fine-tuning
AI Agents
Langfuse
Frontend
Vue.js
DevOps
GCP
GitHub Actions
Datadog
Kubernetes
Apply
$200k – $250k per year • Hybrid • Full-Time • 4+ years exp • New York
Python
JavaScript
TypeScript
SQL
Django
Celery
Django REST Framework
Databases
DynamoDB
Frontend
Vue.js
DevOps
GCP
GitHub Actions
CircleCI
Datadog
AWS
Kubernetes
Amazon EventBridge
Apply
≈ $62k – $150k per year (Estimated) • Remote (United Kingdom) • 3+ years exp • London
Python
Java
SQL
Scala
dbt
DevOps
Terraform
Kubernetes
Apply
≈ $25k – $63k per year (Estimated) • Hybrid • 1+ year exp • Mexico
Python
SQL
RLHF
Reinforcement Learning
LLM
SFT
Edge AI
Machine Learning
Apply
≈ $85k – $159k per year (Estimated) • Remote (United Kingdom) • London
Python
JavaScript
TypeScript
Django
Celery
Django REST Framework
Databases
DynamoDB
Frontend
Vue.js
DevOps
GCP
GitHub Actions
CircleCI
Datadog
AWS
Kubernetes
Amazon EventBridge
Apply
≈ $85k – $159k per year (Estimated) • Remote (United Kingdom) • London
Python
JavaScript
TypeScript
Django
Celery
Django REST Framework
Databases
DynamoDB
Frontend
Vue.js
DevOps
GCP
GitHub Actions
CircleCI
Datadog
Azure
AWS
Kubernetes
Amazon EventBridge
Management
Agile
Apply
Financials
Total raised
$48.6M
Latest round
Venture - Series Unknown
Funding rounds
2
Investors
2
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2023 | $16.6M | Details |
| Series A | 2022 | $32M |
Key Investors
Oxford Science Enterprises
Oxford Science Enterprises backed Prolific in its early years. The firm commercialises research coming out of the University of Oxford.
oxfordscienceenterprises.com
Partech
Partech led Prolific's Series A financing in 2022. The firm invests in European and global technology companies from seed to growth.
partechpartners.com