Senior Backend Engineer, Offensive Security Platform | Stock Options

Hadrian; Amsterdam; Hybrid; EUR 110,000 - 150,000; Full time

Benefits offered by this job

Permanent contract

Unlimited paid holiday

Stock options package

Mobile phone stipend

Work-from-home budget

Referral bonuses

Swapfiets

Job summary

Hadrian is seeking a Senior Backend Engineer to design and implement high-performance backend services for our offensive security platform. You will work on autonomous systems capable of scanning, analyzing, and validating vulnerabilities at internet scale, building architectures that think like attackers and operate across global markets.

The role requires deep backend expertise, a hacker mindset, and experience with distributed systems, event-driven architectures, and data pipelines using

Qualifications

• 4+ years of experience building large-scale distributed systems.
• Proficient in Go, Python, C# or similar; experience with PostgreSQL.
• Background in cybersecurity.
• Experience with AI-enabled development to accelerate workflows.
• Strong problem-solving and debugging skills.
• Experience with scalable, high-performance backends.

Responsibilities

• Develop and maintain event-driven backend components.
• Architect and deploy backend services powering Agentic AI.
• Write low-level, high-concurrency tools in Go and Python with robust APIs.
• Design data pipelines using Apache Kafka and Kubernetes/Knative.
• Shape architectural decisions aligned with business goals.
• Build autonomous security platform operating at internet-wide scale.

Skills

4+ years distributed systems

GoLang

Python

C#

PostgreSQL

Cybersecurity

AI in development

Problem-solving

Scalability

Communication

Tools

Knative

Kafka

Docker

Kubernetes

Neo4j

AWS

Job description

Hadrian is seeking a Senior Backend Engineer to design and implement high-performance backend services for our offensive security platform. You will work on autonomous systems capable of scanning, analyzing, and validating vulnerabilities at internet scale, building architectures that think like attackers and operate across global markets.

The role requires deep backend expertise, a hacker mindset, and experience with distributed systems, event-driven architectures, and data pipelines using