Senior Full-Stack Software Engineer
Start date : ASAPContract: Permanent positionSalary: €55,000 – €65,000 depending on experienceLocation: Remote or hybrid, candidate must be based close to Brussels, Paris or London.
About Us
Vialma is a streaming service dedicated to music and the arts, creating unforgettable digital and multimedia experiences for our B2B clients and end users. We work in close partnership with museums, concert halls, and cultural organisations (e.g., Paris Opera, Orsay Museum, London Symphony Orchestra), as well as corporate brands and financial institutions across Europe, to help them connect with their audiences, increase revenue, and raise funds.We build white-label streaming services and tailor-made playlists, taking care of music licensing, tech, and content management, so our partners can focus on what they do best. Our Health & Education branch also enables hospitals, schools, and other institutions to bring the arts to a broader audience.You'll be joining a highly experienced, senior development team that's passionate about clean, maintainable code and building impactful functionality. Our work is challenging, complex, and strategically important, spanning streaming, multi-tenant B2B SaaS platforms, and rich multimedia experiences. You'll have the freedom to make high-impact technical decisions, contribute to a forward-thinking stack, and collaborate with pragmatic, friendly engineers who value both quality and velocity. This is a unique opportunity to tackle intricate problems, shape the direction of our products, and deliver elegant solutions that delight users and clients alike.
Role Overview
We are looking for a Senior Full-Stack Software Engineer to work closely with the CTO and help evolve our multi-tenant B2B SaaS platform. This is a highly hands-on role focused on solving complex technical problems, improving the scalability of the platform, and delivering features across the stack.You will work across frontend and backend, building features, investigating technical issues, improving the scalability, reliability, and performance of the system as new features and clients are added. A key part of the role is the ability to understand an existing codebase, identify root causes of issues, and design pragmatic solutions that can be delivered end-to-end. You will also play an important role in helping the team adopt AI tools in their development workflows, acting as an AI champion and encouraging practical ways to improve productivity and engineering practices.
The ideal candidate is a strong generalist engineer with experience building and maintaining SaaS platforms. You are comfortable working with technologies such as React, Next.js, TypeScript, and PHP and enjoy taking ownership of technical challenges and turning them into robust solutions. Experience with streaming or media-rich platforms is a plus.
Responsibilities
Hands-on Engineering
Work hands‐on across the stack to design, build and maintain features for our multi-tenant B2B SaaS platformAbility to work as an independent contributor, take ownership of a project, and deliver it end-to-end.Investigate technical issues, identify root causes, and propose solutions.Actively contribute to day-to-day development work, including implementing features, fixing bugs, and addressing technical tickets across the codebase.Support the team in navigating complex areas of the system and resolving production issues.
Performance, Accessibility & QualityMonitor and improve the performance and reliability of the platform, including frontend performance, backend performance, and infrastructure efficiency.Ensure the platform remains accessible, performant, and scalable as new features and clients are added.Define and maintain strong testing practices across the codebase, including unit, integration, and end-to-end tests, to ensure system reliability and prevent regressions.Support the CTO in designing and evolving our product architecture across the frontend, backend, and infrastructure.
Collaboration & Continuous ImprovementParticipate in planning sessions, daily stand-ups, retrospectives, technical discussions, code reviews, and architecture decisions.Contribute to improving the development workflow, tooling, and CI/CD processes.Stay current with modern engineering practices and propose pragmatic improvements to our architecture, stack, and workflows.Support the CTO with code reviews, technical decision-making, release management, and proposing testing strategies.Act as an AI champion and support the team in integrating AI tools into their development workflows.
Required Skills & Experience
Full-Stack Engineering6+ years experience as a software engineer working on production systems.Strong full-stack development experienceExperience building or maintaining multi-tenant B2B SaaS platforms.Understanding of software architecture and infrastructure.Ability to understand an existing codebase, investigate issues, identify root causes, and implement solutions independently.Experience contributing to architecture decisions, system design, and technical direction.Professional proficiency in English (written and spoken), with the ability to communicate clearly in a distributed engineering team.
Generally speaking, you have a proven ability to leverage AI tools in development workflows and you are capable of designing the process, tools and methods in order to use AI safely and ethically.
Backend & Platform Experience building backend systems and APIs using technologies such as:PHPREST APIsGraphQLCaching (Redis / Memcache)Message Queues - Event Driven ArchitectureRelational databases such as MySQL / PostgreSQL
Frontend Solid experience building modern web applications using technologies such as:React and Next.jsTypeScriptModern component-based architectures and reusable UI components
Good understanding of:Modern CSS approaches (CSS Modules, Tailwind, CSS-in-JS, etc.)Responsive & adaptive designFrontend performanceIntegrating frontend applications with backend APIsAtomic Design
Engineering PracticesExperience maintaining code quality in a team environment (code reviews, standards, testing).Familiarity with testing practices (unit, integration, and end-to-end tests).Experience working with modern development workflows and CI/CD pipelines.
Nice-to-have Skills Experience with video/audio players, streaming UIs, or media-rich applications.Experience building or maintaining design systems or shared component libraries.Experience working with cloud infrastructure, including AWS (ECS, EKS, CloudFunctions, Networking, DevSecOps)Knowledge of product analytics or experimentation (tracking, A/B testing)Experience or interest in mentoring a small team of developers.Professional proficiency in French.A genuine interest in music, arts, or cultural institutions.
How to Apply
If you are a hands-on full-stack engineer who enjoys solving complex technical problems, improving systems, and delivering features end-to-end, we would love to hear from you.Send your CV to hire@vialma.com and a brief note highlighting:Why you are interested in working at VialmaExamples of multi-tenant B2B SaaS platforms you have worked onLinks to GitHub, projects, or code samples, if availableVialma is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. If you want to combine your engineering skills with a love for culture and streaming technology, this is the place for you.Even if your experience does not match every requirement listed, we still encourage you to apply if you believe you could be a strong fit for the role.