Front End Engineer - Team Product H/F
Role summary by JobGrid
Front End Engineer - Team Product H/F at Alta Ares in Paris, France is a senior, full-time, on-site IT role. JobGrid normalizes the role facts, keeps the employer description separate, and points candidates to the original public application page with non-personal referral parameters. No salary is listed in the payload.
- Paris, France; on-site; full-time; senior; category: IT; subcategory: Front End Engineer.
- Source posted on 2026-06-01 and last checked on 2026-06-01.
- JobGrid keeps the publisher value within the supplied source facts and comparable role classification.
- Applications are sent to the original public application page, with non-personal referral parameters appended.
About Alta Ares
Alta Ares is a deeptech startup founded in 2024, building real-time AI for defense operations (ISR, C-UAS). Our primary clients are NATO-aligned militaries, with regular deployments during live exercises. Raised €2M pre-seed in May 2025. Products include:
- Real-time AI ISR module deployable on drones and tactical platforms
- Full-stack Counter-UAS (C-UAS) solution enabling autonomous drone takeover under GNSS-denied environments
- MLOps platform for training & deploying military-grade AI models
- Radar Intelligence platform for fusing and analyzing track data
Position Details
- Location: Paris, France (hybrid possible)
- Reports to: Head of Product
- Position Objective: Build and scale user-facing applications across Alta Ares’ platforms, with a strong focus on front-end excellence and the ability to contribute across the stack when needed
- Tech stack: ReactJS, NodeJS, Kotlin, Python (web servers), Figma
- Contract: Full-time, permanent position (CDI)
Role & Mission
As a Front-End Engineer, you will own the development of high-quality interfaces across our software platforms (cloud, on-premise, and edge deployments) with a strong product-vision.
While your core strength is front-end engineering and design systems, you are comfortable contributing beyond the UI layer working with APIs, backend services, and system integrations when required. We are a small and agile company, requiring flexibility.
This role is ideal for engineers coming from SaaS or scale-up environments who combine frontend craftsmanship with product ownership and versatility.
Your Responsibilities
Frontend & Design Systems
- Consolidate existing software products and lead cross-products code refactors when needed
- Build scalable, maintainable web applications using modern frameworks
- Develop and maintain a coherent design system and reusable component library, in collaboration with our UI/UX designer
- Ensure high standards of UX, consistency, and visual quality across products
System Integration & Environments
- Build applications that run across cloud, on-premise, and edge environments
- Handle diverse data patterns (real-time, batch, intermittent connectivity)
- Ensure resilience and usability in constrained or operational contexts
Performance & Reliability
- Optimize frontend performance and application responsiveness
- Ensure reliability in mission-critical environments
- Debug production issues across the stack when necessary
Full-Stack Contribution
- Integrate with backend APIs and data services
- Contribute to backend or middleware when needed (API design, data handling, debugging)
- Work across the stack to unblock progress in a small, fast-moving team
Testing & Quality
- Write unit, integration, and end-to-end tests
- Maintain high standards of code quality and documentation
- Participate in code reviews and continuous improvement