Front End Engineer - H/F

About Alta Ares

Alta Ares is a deeptech startup founded in 2024, building real-time AI for defense operations — ISR, C-UAS, and autonomous systems. Our clients are NATO-aligned militaries and defence institutions, with regular deployments during live exercises and operational demonstrations. We raised €2M seed in May 2025, 50M in June 2026, and are expanding fast.

Our product suite includes:

• Real-time AI ISR module deployable on drones and tactical platforms

• Counter-UAS solution enabling autonomous drone takeover in GNSS-denied environments

• Full-stack MLOps platform for training & deploying military-grade AI models

• Data fusion and trajectory prediction

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

Requirements

Candidate Profile

• 3–5 years of experience in software engineering, with strong frontend specialization

• Proven experience in SaaS or scale-up environments

• Strong expertise in modern frontend frameworks (React preferred)

• Solid understanding of design systems and UI architecture

• Comfortable working across the stack (APIs, backend basics, system integration)

• Product-oriented mindset with a bias for action

Nice to Have

• Experience with data-heavy or complex interfaces

• Familiarity with applications deployed outside standard cloud environments (on-prem, edge)

• Experience with TypeScript across the stack

• Exposure to DevOps or deployment pipelines

• Interest in deeptech, defense, or high-reliability systems

Skills & Values

Frontend Craftsmanship

• Strong attention to detail and UI quality

• Ability to build scalable, reusable components

Versatility

• Comfortable stepping outside strict role boundaries

• Able to contribute across the stack when needed

Product Ownership

• Focused on delivering user value, not just features

• Pragmatic and impact-driven

Execution & Autonomy

• Thrives in small, fast-moving teams

• Takes ownership and delivers end-to-end