19 beste vacatures voor de functie van .net developer in hoofddorp (nieuwe medewerkers gezocht)

Software Engineer
Hadrian —Amsterdam Centrum
- Hybride werken
- DevOps
- AI
- Python
- Telefoonplan
- Aanbrengbonus
Snel solliciteren
Senior Engineer
Change —Amsterdam Zuid
- € 60.000 - € 85.000 per jaar
- Hybride werken
Snel solliciteren
Shopify developer
FOR BELIEVERS —Amsterdam
- E-mail
- JavaScript
- APIs
- HTML
Test Automation Engineer
Pancompany —Amsterdam-Zuidoost
- € 55.000 - € 110.000 per jaar
- Hybride werken
- Informatica
- DevOps
- Engels
Software Engineer - Defensie
CGI —Randstad
- Militaire ervaring
- Java
- ICT
Snel solliciteren
Business Developer
Electra —Amsterdam Oost
- Hybride werken
- Engels
- Bedrijfsontwikkeling
- Analytisch vermogen
Senior Software Engineer
Clever Recruiting —Amsterdam
- Java
- Python
Snel solliciteren
Senior Low-Code & AI Developer
Robidus —Breukelen
- € 4.198 - € 5.998 per maand
- Parttime
- Hybride werken
- Informatica
- Databases
- Analytisch vermogen
- Gezondheidsprogramma
- Reiskostenvergoeding
Snel solliciteren
10 dagen
Software Engineer AV
AVEX —Breukelen
- Online sollicitatie
- Hybride werken
- Engels
- Bachelor
- HTML
Snel solliciteren
Senior Software Engineer, Windows/Desktop Applications - Amsterdam, Netherlands
Speechify —Amsterdam
- € 30.000 - € 120.000 per jaar
- Thuiswerk
- Doctor
- Windows
- C++
7 dagen
Medior/Senior Mendix Developer
InnSpire —Randstad
- € 6.000 - € 10.000 per maand
- Parttime
- Bachelor
- Reiskostenvergoeding
- Budget voor professionele ontwikkeling
Business Developer - Inbound Sales - Amsterdam
Treatwell —Amsterdam
- Fulltime
- Hybride werken
- Verkoopervaring
- Salesforce
- Kantoor
Snel solliciteren
DevOps Engineer
Atos —Amsterdam
- Hybride werken
- Azure
- DevOps
- Java
- Tankpas
Lead Developer (Digital Team)
Good Company —Amsterdam
- Parttime
- Azure
- DevOps
- SQL
- Tankpas
- Bedrijfsfitness
Codesys Engineer
ndus3 —Amsterdam
- € 3.775 - € 4.530 per maand
- Online sollicitatie
- Informatica
- Java
- Master
- Budget voor professionele ontwikkeling
Medior C++ Engineer
ndus3 —Amsterdam
- € 3.000 - € 3.800 per maand
- Online sollicitatie
- Informatica
- Engels
- Java
- Budget voor professionele ontwikkeling
Aanjager OutSystems Developer
InnSpire —Randstad
- € 6.000 - € 10.000 per maand
- Parttime
- Bachelor
- Reiskostenvergoeding
- Budget voor professionele ontwikkeling
Senior Platform Engineer
Atos —Amsterdam
- Hybride werken
- Azure
- AWS
- Analytisch vermogen
- Reiskostenvergoeding
Senior Software Engineer
Suitsupply —Amsterdam
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Software Engineer

Hadrian
Amsterdam Centrum

Snel solliciteren

Vacaturegegevens

Secundaire arbeidsvoorwaarden

Aandelenopties
Telefoonplan
Aanbrengbonus

Kwalificaties

Go
React
Kubernetes
DevOps
.NET Core
C#
.NET
Docker
PostgreSQL
Gedistribueerde systemen
Neo4j
Schaalbaarheid
Kafka
Cybersecurity
AI
TypeScript
Python
Tijdmanagement

Volledige vacaturetekst

Are you obsessed with building high-performance systems that can outsmart the world’s most sophisticated hackers?

Then look no further, and join us here at Hadrian as a Software Engineer!

Who are we:

We are Hadrian - an offensive cybersecurity startup. We are reshaping the future of cybersecurity through the power of agentic AI injected with the hacker’s perspective. Founded in August 2021, we've secured funding and the backing of ABN AMRO Ventures and Cherry Ventures, propelling us into a new era.

Our goal is to provide companies with an autonomous Threat Exposure Management platform. At Hadrian, we view security through a hacker's eyes because, well, hackers understand hackers best. We continuously map the digital footprint of organizations, discover risks, and prioritize remediation for security teams to harden their external attack surfaces.

Located in Amsterdam's buzzing Leidseplein and by London's famous Paddington Station, our diverse team from 25+ countries is on a mission to shake things up in offensive security. Join us in making waves and securing over 200 businesses, and be at the forefront of automated offensive security.

Your Role:

As a Software Engineer at Hadrian, you will design and implement high-performance backend services and distributed systems that power our offensive security platform. You will work on autonomous systems capable of scanning, analyzing, and validating vulnerabilities at internet scale, moving beyond traditional scanning into intelligent, agentic security operations.

This role is ideal for engineers who combine deep backend engineering expertise with a hacker mindset. We’re looking for someone who enjoys solving complex scalability challenges, building resilient event-driven architectures, and thinking like an attacker to anticipate edge cases before they happen.

If you enjoy working across disciplines to build autonomous security systems that operate at internet scale, and want to help push offensive security beyond human speed and capability, we would love to hear from you!

What you will do as a Software Engineer at Hadrian:

Develop and maintain event-driven components that orchestrate and execute core offensive security strategies.
Translate offensive security strategies into robust, high-quality code.
Architect and deploy backend services that power our Agentic AI capabilities, moving beyond simple scanning to intelligent, multi-step exploit validation.
Write low-level, high-concurrency tools in Go and Python while maintaining robust, scalable APIs.
Design data pipelines capable of handling massive internet-wide reconnaissance data using Apache Kafka and Kubernetes/KNative.
Leverage your expertise to shape architectural decisions and align technical strategies with business goals.
Take on a unique challenge. We’re on a mission to uncover the most urgent security flaws in our customers' attack surfaces in real-time. You’ll help us build our innovative platform, operating at an internet-wide scale.

You are fit for this job because you:

Have 3+ years of experience building large-scale distributed systems, features or applications.
Are proficient in languages such as GoLang, Python, C#, or similar technologies, and have experience working with PostgreSQL.
Have a background in cybersecurity.
Use AI pragmatically to accelerate development workflows, automating the “good enough” so you can focus on mission-critical security architecture and complex engineering challenges.
Have exceptional problem-solving abilities, with the grit to investigate and resolve deep-seated production bottlenecks.
Enjoy solving complex scalability and performance challenges in distributed environments.
Communicate with clarity, bridging the gap between technical complexity and product mission.
Share our values and work in accordance with them

Bonus points if you have:

Experience in DevOps / DevSecOps environments using Kubernetes, Knative, or Kafka.
Hands-on experience with Agentic AI frameworks or building autonomous agents.
Experience with Python and TypeScript.
Are an expert in Scalability: You have a track record of building systems that don't just work, but perform under extreme load.
Deep experience with database scaling, especially PostgreSQL and Neo4j.
Contributions to open source projects.

Our stack:

GoLang
Python
Knative Serving / Kafka
Docker / Kubernetes / Helm Charts
C#
PostgreSQL
.NET Core
AWS
Typescript (NextJS / ReactJS)

Benefits at Hadrian:

Unlimited paid holiday
Stock options package
Mobile phone stipend
Work-from-home budget
Business travel card
Swapfiets
Referral bonuses

Why you want to be part of Hadrian:

Make the internet safer: We enable companies to protect their customers, employees, and other stakeholders from malicious hackers by providing real-time Exposure Management from the Hacker’s perspective

Board a primed rocket ship: Hadrian is growing fast; the team is approaching 100 wonderful people, notable customers are signed, and significant funding is raised. Now is the time to join our high-growth journey

Be part of a strong and dynamic culture: Our values define who we are as a group and serve as the cornerstones to guide us in building a product that our customers love. At Hadrian, we achieve this by championing a culture that takes ownership, succeeds together, increases velocity, and pursues growth

Sounds like the role for you? Hit the apply button!

Our customers are seeking a world-class and reliable digital security service. That is exactly what we are offering. Therefore, a background check will be part of the process.

Snel solliciteren

Verfijn je zoekopdracht

.net developer vacatures in hoofddorp

Software Engineer

Senior Engineer

Shopify developer

Test Automation Engineer

Software Engineer - Defensie

Business Developer

Senior Software Engineer

Senior Low-Code & AI Developer

Software Engineer AV

Senior Software Engineer, Windows/Desktop Applications - Amsterdam, Netherlands

Medior/Senior Mendix Developer

Business Developer - Inbound Sales - Amsterdam

DevOps Engineer

Lead Developer (Digital Team)

Codesys Engineer

Medior C++ Engineer

Aanjager OutSystems Developer

Senior Platform Engineer