Senior Front End Software Engineer (Vue.js) - CDI

Who we are?

HarfangLab is a French cybersecurity scale-up developing a unified platform powered by a single lightweight agent and AI built for cybersecurity. Continuously enhanced through R&D, our portfolio includes EDR (Endpoint Detection and Response), EPP (Endpoint Protection Platform), ASM (Attack Surface Management), ITDR (Identity Threat Detection and Response), and Email Security, with the latter two joining the platform in 2026. Together, these solutions detect and neutralize threats across endpoints, servers, identities, and email environments. Our engines, models, and algorithms identify abnormal behaviour, generate security alerts, and block malicious activity.

Founded in 2018, HarfangLab has earned strong industry recognition: its EDR was the first to be certified by ANSSI in 2020, the first to obtain ANSSI qualification in 2025, and the first EDR to receive BSI certification in Germany. We also joined the French Tech 2030 programme, alongside 80 innovative French companies, as cyber resilience becomes a strategic priority for Europe.

Backed by €30 million in funding, we have grown from 40 employees in 2023 to 140 today and expanded internationally across Europe.

HarfangLab now protects the endpoints of more than 1,000 clients across all sectors, including CAC 40 industrial companies, government entities, SMEs, hospitals, and local authorities. Driven by a strong collective spirit and international ambitions, we remain committed to our original mission: protecting organizations against increasingly complex cyber threats while enabling them to retain full control over their data.

What you will do with us?

You will join the Product Department as part of the Frontend team, a group of 7 developers responsible for building and continuously improving our cybersecurity platform and delivering new features. In this role, you will work closely with and act as a key point of coordination between the other technical teams across the company (UX, Back End, Agent, AI, DevOps).

Harfanglab continuously strives to create new features to provide the most professional cybersecurity application for its clients. These features are developed and deployed using agile methods to ensure that the user experience remains the best in the market. You will join a squad, which is reassigned each quarter, allowing you to work on different projects and collaborate with different team members.

You will work with the following technical stack: TypeScript, Vue 3, Sass

Your main missions will include:

• Integrating new features into the platform,

• Ensuring scalability and continuously improving code quality: the web application code must remain simple, readable, and scalable to adapt to clients’ evolving needs,

• Proactively suggesting improvements and take initiative: Engineers are encouraged to grow into responsibility over the areas they invest in.

About you

Hard Skills

• You graduated from a Master’s program or engineering school in computer science,

• You have at least 5 years of experience in frontend development and bring a minimum of 2 years of professional experience working with the Vue.js framework, 

• You possess a strong knowledge of modern JavaScript (ECMAScript)

• You are proficient in CSS and have some understanding of UX/UI design,

• You are comfortable withGit and Linux.

• You are fluent in French and English 

Soft skills 

• You enjoy teamwork and collaboration and like sharing your knowledge with others as well as discussing technical topics,

• You can work autonomously, take initiative, and proactively find solutions rather than waiting for them to be handed to you,

• You are curious, meticulous and eager to learn. 

About us

Our Office and Team Culture

• Offices located in the heart of Paris, near Bourse (75002),

• High-performance equipment tailored to your needs and preferences (Mac/PC, additional screens),

• Thanks to our Office Manager, events regularly take place such as seminars, themed evenings, and more,

• An onboarding process to welcome each new colleague with an explanation of the roles within the different teams of the company and a mentor to guide you during your early days.

Compensation & Benefits

• Total compensation: €55-65K + profit sharing

• The opportunity is open to remote work, provided you are based in France.

• Health, well-being & sport: Alan insurance + Alan Mind mental wellness app + Egym subscription, covered at 80% by HarfangLab,

• Meal vouchers: Swile card + access to an employee benefits platform.

• Paid time off: 25 days annual leave + 8-11 RTT days.

• Professional growth: Access to training programs and industry events tailored to your needs.

The recruitment process

• A 30-minutes call with our Talent Acquisition Manager,

• A 30-minutes visio interview with the Hiring Manager,

• A case study to complete at home,

• A technical 1 hour on-site interview + 30 minutes with the team for a team fit assessment,

• A workplace personality questionnaire to assess your motivations and soft skills,

• A final HR video appointment to review your soft skills and motivations.