Full Stack Software Engineer m/f/d

Qevlar AI; Paris; Hybride; EUR 60 000 - 100 000; Plein temps

Résumé du poste

An innovative firm is seeking a talented backend developer to enhance their core web platform. This role focuses on performance, API design, and product integrations, with a strong emphasis on backend scalability. You will refactor REST APIs, debug slow queries, and integrate monitoring tools to improve the overall user experience. Join a dynamic team where your contributions will have a tangible impact on cybersecurity solutions. This remote-first position offers flexibility and the chance to shape the future of a groundbreaking product in the AI and security space.

Prestations

Equity Opportunity

Remote Work Flexibility

Innovative Work Environment

Collaborative Team Culture

Qualifications

• Deep experience with PostgreSQL and relational design.
• Strong Python developer with experience using SQLAlchemy.
• Skilled in designing efficient, scalable REST APIs.

Responsabilités

• Refactor REST APIs to improve performance and reduce inefficiencies.
• Integrate tools for better product insights and monitoring.
• Enhance scalability and maintainability of backend systems.

Connaissances

PostgreSQL

Python

REST API Design

SQLAlchemy

Security Best Practices

Vue.js

Outils

PostHog

Mixpanel

Sentry

Description du poste

Qevlar AI is revolutionizing the SOC with autonomous investigation and, in doing so, solving three key problems for analysts : the cybersecurity talent shortage, alert fatigue, and increasingly complex and sophisticated threats.

Founded in 2023, we've already made waves in cybersecurity, AI, and start-up communities. A few highlights :

• Raised $14M in funding led by EQT Ventures and Forgepoint Capital
• Accepted into Station F's flagship AI program (Meta, Hugging Face, Scaleway)
• Named by Sifted (Financial Times) as one of Europe's cybersecurity startups to watch
• Joined Platform 58, La Banque Postale's premier startup incubator
• Ranked among the top 10 most innovative startups in France by EU-Startups
• Secured early partnerships with major players across EMEA, NAMER, and MENA
• We have some exciting (and impressive) early customers we're really excited about.

We're at a pivotal stage - building fast, growing smart, and bringing on sharp minds to shape the future of autonomous cyber defense.

What will you do?

You'll play a critical role in evolving our core web platform - both frontend and backend - with a focus on performance, API design, and product integrations. This is a backend-heavy role with a full-stack flavor.

In your first 6 months :

• Backend Scalability & API Performance

Refactor REST APIs to reduce over-fetching and inefficient database calls

• Push async processing across high-latency parts of the stack
• Introduce structured pagination, connection pooling, or background jobs

Enhance scalability and maintainability

• Debug, refactor, and optimize slow queries
• Integrations & Observability

Hook up tools like PostHog, Mixpanel, and Sentry for better product & tech insight

• Build integrations with external APIs for internal tools or client-facing features

Who we're looking for

Must-haves

• Deep experience with PostgreSQL and relational design
• Strong Python developer with experience using SQLAlchemy
• Skilled in designing efficient, scalable REST APIs
• Knowledge of security best practices (JWT, SSO, OWASP top 10)
• Frontend experience with Vue.js (or another SPA framework)

Nice-to-haves

• Query performance ninja - can explain indexing, execution plans, JOIN optimisation, and caches
• Comfort with frontend responsiveness, UX, and styling polish

What success looks like

• Noticeably faster frontend performance
• Cleaner, more maintainable APIs and schemas
• Improved monitoring and external tool integrations
• Seamless collaboration with other engineers and product folks
• Tangible impact on platform features and user experience
• Work on meaningful problems with real-world impact in cybersecurity
• Join a small, fast-moving team where you'll own your work
• Shape the future of a product already making noise in AI + security circles
• Opportunity for equity and early ownership
• Remote-first with flexibility on location

Hiring process

• Technical Interview; backend and API experience - performance, schema design, and code style
• Case Study : past project or live solve a backend architecture or optimization problem
• Meet the Team

We're ready to ship more - faster and smarter. If that sounds like your kind of challenge, let's talk.

Teams Tech Locations Paris Remote status Hybrid Employment type Full-time