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Alohi is an AI-first SaaS scale-up on a mission to simplify how businesses work. Our products (Sign.Plus, Dial.Plus, Fax.Plus, and Scan.Plus) serve 5M+ customers worldwide, from small businesses to global enterprises. We're building category-defining tools that people actually love to use.

We started with seed support from FONGIT (Fondation Genevoise pour l'Innovation Technologique), backed by the State of Geneva. Since then, we've chosen to bootstrap our growth. This keeps us financially independent, customer-focused, and able to move fast without external constraints.

We're a lean, fast-growing team based in Geneva with strong traction across global markets. This is an entrepreneurial environment where you'll have high ownership, broad responsibilities, and direct impact from day one. If you want to build something meaningful in a fast-paced, innovation-driven company, without the chaos of early-stage uncertainty or the bureaucracy of a large corporation, this is it.

We are hiring a Senior Backend Developer to build and scale the server-side systems that power our products. You'll own the development of APIs, backend modules, and database architecture, ensuring high performance and reliability as we serve millions of users worldwide.

This position is fully on-site at our Geneva office.

Responsibilities

We're looking for a hands-on engineer who can design, build, and maintain backend systems that scale.

Backend Development

Build and maintain mission-critical backend systems to support high-volume requests across our product suite
Design and develop robust APIs and web services that power our frontend applications
Develop and maintain backend modules, ensuring clean architecture and maintainable code
Build backend infrastructure for AI-powered features, including integration with LLMs, model APIs, and data pipelines for machine learning workflows

Performance & Scalability

Identify and resolve performance bottlenecks in a high-traffic, scalable environment
Optimise database queries and system architecture to handle growing demand
Ensure development tasks are completed within timelines with minimal defects

Infrastructure & DevOps

Work with containerisation technologies (Docker, Kubernetes) to deploy and manage services
Contribute to CI/CD pipelines and build systems to streamline development workflows
Participate in on-call rotations to ensure system reliability and respond to production incidents
Collaborate with cross-functional teams to deliver features end-to-end

Requirements

3–5 years of experience in backend software engineering, ideally in a technology-driven or SaaS environment
Strong proficiency in Python
Solid experience with complex data structures and databases (MongoDB, MariaDB, Elasticsearch)
Able to critically evaluate and effectively use AI-assisted development tools while maintaining a deep understanding of the underlying code
Strong Linux knowledge and hands-on experience
Good understanding of HTTP, REST, web servers, and microservices architecture
Experience with containerisation (Docker, Kubernetes)
Familiarity with build systems and CI/CD procedures
Ability to write clean, scalable, and well-tested code
Strong problem-solving skills and attention to detail
Fluent in English (written and spoken)

What We Offer

Office First: We believe the best collaboration happens in person. You'll be based at our Geneva office, working alongside a lean, high-calibre team where ideas flow freely and decisions happen fast.

AI-First Technology: We provide all the devices and software you need to excel, including access to cutting-edge AI tools and a modern tech stack. You'll have the best resources at your disposal to move quickly and build great things.

Personal Development: We invest in your growth with a dedicated learning budget for training programmes, conferences, courses, and professional development opportunities.

Quarterly Events & Annual Retreats: Regular team events and company-wide retreats to connect, celebrate wins, and have fun together.

Award-Winning Culture: We're proud to be recognised as a Great Place to Work and Best Workplace, reflecting our commitment to building an environment where talented people thrive.

Perks & Wellbeing: Weekly yoga sessions, plus discounts on gym memberships, restaurants, and Apple products to support your lifestyle inside and outside of work.

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