Senior Full-Stack 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
In this role, you will help shape and scale partner-enabled digital services and the technical foundation behind them. You will work in a complex product environment where partner solutions, APIs, reusable service enablers, and a developer platform need to evolve together across both back-end and front-end applications.
You will collaborate closely with solution architects, project managers, developers, designers, product managers, business analysts, and UI/UX specialists to turn needs into robust technical solutions. The role combines hands-on development with technical influence, giving you the opportunity to drive quality, scalability, and long-term maintainability in a modern full-stack setup. It is a great match if you enjoy owning technical direction while still being close to the code.
Job DescriptionYou will drive technical work together with the Project Manager and Solution Architect, taking ownership of development activities throughout the project lifecycle.
You will develop and evolve partner solutions, reusable components, service enablers, and APIs across back-end and front-end applications.
You will translate business and product needs into scalable technical solutions and help ensure smooth integration between systems.
You will support architectural design and contribute to the technical roadmap with a focus on scalable, maintainable, and high-performing applications.
You will lead through hands-on coding, code reviews, technical guidance, and continuous improvement initiatives.
You will help establish and maintain coding standards, testing strategies, and engineering best practices to secure high quality and reliable delivery.
You will work with automated testing and performance optimization to improve stability and user experience.
You will create and maintain technical documentation, guidelines, and patterns that support the wider development team.
You will contribute to knowledge sharing through workshops and onboarding support for new team members.
You will explore and apply modern engineering practices, including AI-assisted development, to improve productivity and delivery quality.
RequirementsA university degree in a relevant field and several years of experience in complex software development.
Strong experience with TypeScript and modern full-stack application development.
Deep expertise in AWS, including serverless architectures and cloud-native services.
Hands-on experience with Node.js and React.js.
Experience working with Infrastructure as Code.
Ability to take ownership and move development forward in collaboration with architects and project leads.
Interest in AI and modern engineering practices that improve productivity and speed up delivery.
Ability to explain and discuss technical concepts with both technical and non-technical stakeholders.
Fluent English, both written and spoken.
Valid work permit, where applicable.
Ability to complete a background check before start.
Nice to haveExperience with AWS CDK.
Experience from the automotive industry.
What We OfferPermanent employment at Lumen Dynamics
Occupational pension
Wellness allowance of SEK 5,000 per year
Application
Selections are made on an ongoing basis – apply as soon as you can.