Fourthline
fourthline.com
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Overview
Fourthline is a Dutch technology company founded in 2018 and based in Amsterdam. Its platform verifies identity documents and biometrics to onboard customers for regulated financial institutions. The service combines automation with human review to meet strict anti-money laundering rules.
News
Fourthline becomes qualified trust service provider under eIDAS Biometric Update
Approval lets company issue qualified electronic signature certificates through its own trust service, extending its IDV platform into regulated digital trust.
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Report
Fourthline Trust Services Granted Status as Qualified Trust Service Provider in the EU
QTSP status allows for full control over the digital trust value chain from identity verification to qualified electronic signature (QES) issuance Fourthline Trust Services AB, a subsidiary of Fourthline
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Report
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Technologies
Tech DNA
C#
PostgreSQL
Amazon EKS
AWS
Azure
AI/ML
Amazon EKS
AWS
Azure
Azure DevOps
CI/CD
Docker
Git
Terraform
Kubernetes
PostgreSQL
Computer Vision
Other
C#
PoC Library
.NET
Rest API
RabbitMQ
Stack modernity
70/100
How modern this stack is, based on technology relevance, AI adoption and the share of legacy tools.
In-demand technologies
PoC Library
2 jobs
Required
C#
2 jobs
Required
PostgreSQL
2 jobs
Optional
Rest API
2 jobs
Required
.NET
2 jobs
Required
Terraform
2 jobs
Optional
RabbitMQ
2 jobs
Optional
Azure DevOps
2 jobs
Optional
Salary medians are calculated from this company's open jobs and compared with the market.
Industry adoption
CI/CD
17%
AWS
17%
Kubernetes
15%
Docker
14%
Azure
13%
PostgreSQL
12%
Share of companies in the same industry that use each technology.
Stack changes
Kubernetes
Aug 2026
Terraform
Aug 2026
Rest API
Aug 2026
RabbitMQ
Aug 2026
PostgreSQL
Aug 2026
Git
Aug 2026
Docker
Aug 2026
CI/CD
Aug 2026
Technologies recently added to or removed from this company's stack - a signal of tech migrations and new initiatives.
Roche Poland
EPAM Systems
DCG
Upvanta
Sopra Steria Poland
Ciandt
Growth
Hiring Momentum
38/100
Slowing
Open positions
5
0 opened / 0 closed in 30 days
ATS activity
Every ~2 days
08/31/2026
Hiring Dynamics
0%
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
40% ▼
Executive
40% ▼
Product
20% ▼
Activity Timeline
Added Kubernetes to stack
Aug 2026
Added Terraform to stack
Aug 2026
Added Rest API to stack
Aug 2026
Added RabbitMQ to stack
Aug 2026
Added PostgreSQL to stack
Aug 2026
Added Git to stack
Aug 2026
Added Docker to stack
Aug 2026
Added CI/CD to stack
Aug 2026
Added C# to stack
Aug 2026
Added Azure DevOps to stack
Aug 2026
Added Azure to stack
Aug 2026
Added AWS to stack
Aug 2026
Jobs
≈ $119k – $254k per year (Estimated) • In office • 10+ years exp • Master's Degree • Amsterdam
PoC Library
Apply
≈ $51k – $116k per year (Estimated) • Remote/Hybrid • 5+ years exp • Barcelona
C#
.NET
Databases
PostgreSQL
RabbitMQ
DevOps
Amazon EKS
AWS
Azure
Azure DevOps
CI/CD
Docker
Git
Rest API
Terraform
Kubernetes
Apply
≈ $94k – $193k per year (Estimated) • In office • 5+ years exp • Amsterdam
Computer Vision
Apply
≈ $76k – $164k per year (Estimated) • In office • 10+ years exp • Master's Degree • Barcelona
PoC Library
Apply
≈ $28k – $96k per year (Estimated) • Remote/Hybrid • 3+ years exp • Barcelona
C#
.NET
Databases
PostgreSQL
RabbitMQ
DevOps
Amazon EKS
AWS
Azure
Azure DevOps
CI/CD
Docker
Git
Rest API
Terraform
Kubernetes
Apply