Senior BackEnd Developer

About the Company At Avaron, you get the security of permanent employment combined with the variety of working at different customers. We place specialists across everything from tech, IT and industry to project management and business support – and whatever the assignment, you have a consultant manager who is there for you and your development. About the Role You will join a team that maintains and develops business-critical case management applications used mainly by Customer Service. These systems are central to daily operations and support stable service delivery, efficient case handling, and a strong internal user experience. The main focus of this role is lifecycle management and modernization of legacy applications. You will help reduce technical debt, manage platform upgrades, address lifecycle and security-related risks, and support the move toward more modern solutions for case management and KYC-related processes. You will work as an integrated part of the team, contributing to shared priorities and modern ways of working, including AI-assisted development and quality-focused engineering practices. This is a great opportunity if you enjoy improving critical systems while influencing how modern backend engineering is applied in a regulated environment. Job DescriptionYou will maintain and modernize business-critical case management applications with a strong backend focus. You will drive lifecycle management initiatives, including technical debt reduction, platform upgrades, and remediation of lifecycle and security risks. You will plan and execute migrations from older .NET Framework and .NET Core versions to modern .NET platforms. You will migrate repositories and CI/CD pipelines from Azure DevOps to GitHub and GitHub Actions. You will identify outdated components, unsupported frameworks, and vulnerabilities, and help ensure the applications remain stable, maintainable, and compliant. You will support the development of modern solutions connected to case management and KYC-related processes. You will contribute to automated testing, code reviews, trunk-based development, and other quality-focused engineering practices. You will use AI-assisted development tools for coding, testing, troubleshooting, and documentation where they add value. RequirementsStrong backend development experience with enterprise applications, integrations, and business-critical systems. Solid experience with .NET/C#, databases, APIs, and application maintenance. Experience modernizing and maintaining legacy systems, including technical debt reduction. Experience planning and executing migrations from older .NET Framework/.NET Core versions to modern .NET platforms. Hands-on experience migrating repositories and CI/CD pipelines from Azure DevOps to GitHub/GitHub Actions. Ability to identify and remediate outdated components, unsupported frameworks, and security vulnerabilities. Experience with automated testing, code reviews, CI/CD, and quality-focused development. Familiarity with trunk-based development. Experience using AI-assisted development tools for coding, testing, troubleshooting, and documentation. You are comfortable working in agile, cross-functional teams throughout the software development lifecycle. Fluent Swedish and English. Nice to haveExperience with Windows Server migrations. Knowledge of software lifecycle management, DevSecOps, Kubernetes, and cloud-native platforms. Experience from regulated industries, case management, KYC, insurance, or similar process-intensive domains. What We OfferPermanent employment at Avaron AB Occupational pension Wellness allowance of SEK 5,000 per year Application Selections are made on an ongoing basis – apply as soon as you can.

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.