Senior Engineer
Simployer AB · Stockholm · Tills vidare · Deadline 2026-10-24
Simployer is seeking a **Senior Engineer** for a full-time position based in Stockholm. Working within an autonomous team, the role entails taking ownership of the domain’s technical direction and system architecture rather than merely delivering to specification. Key responsibilities include defining and maintaining domain boundaries and aggregates using domain-driven design, designing and operating **event-driven production flows** from schema design to failure recovery, and establishing consumer-driven contract testing within CI pipelines. The engineer is also expected to evaluate and document architectural choices via tools like ADRs, chart a multi-year technical vision, and independently implement new technologies and patterns in production. Candidates must possess hands-on experience applying **domain-driven design in production**, specifically in determining domain boundaries and aggregates. Requirements also include proven experience building and running event-driven architectures, practical expertise with contract testing in CI pipelines (such as Pact or equivalent), and a track record of independently owning architectural decisions under ambiguous requirements. Applicants must also demonstrate the ability to learn and deploy new technologies independently and comfortably guide technical direction in an autonomous team setting.
Senior Engineer
Simployer · Stockholm · Full-time
About the role
As a Senior Engineer, you'll own the technical direction of your team's domain. You'll decide where the boundaries go, how services communicate, and how we know that what we ship works with the rest of the platform. You'll work in an autonomous team where you're trusted to shape the architecture, not just deliver on a spec.
What you'll do
- Define, evolve and defend domain boundaries, aggregates and bounded contexts using domain-driven design, and make sure the model reflects how the business actually works.
- Design, build and operate event-driven flows in production, from event modelling and schema design to monitoring, failure handling and recovery.
- Introduce and maintain consumer-driven contract testing in CI so that teams can change their services with confidence that shared interfaces still hold.
- Investigate architectural alternatives, make decisions, and document and justify them (for example through ADRs), on your own initiative rather than waiting for a specification.
- Form and communicate a view on where your domain's architecture should go over the next year or two, and bring colleagues along with you.
- Pick up new technologies and patterns when the problem calls for it and take them all the way into production.
What we're looking for
- Recent, hands-on experience applying domain-driven design in production systems, including owning decisions on boundaries and aggregates.
- Experience building and running event-driven architecture in production, not just consuming events built by others.
- A modern approach to testing, including practical experience with contract testing (e.g. Pact or similar) as part of a CI pipeline.
- A track record of making and owning architectural decisions independently, including in situations where requirements were unclear.
- Evidence that you learn new technology on your own and apply it in real work, without needing formal training or central guidance.
- Comfort taking ownership in an autonomous team and setting technical direction.
About Simployer
At Simployer – We simplify being a great employer!
With +12 000 customers and 1.2 million users across our product lines, Simployer is the largest HRM cloud provider in Scandinavia. We are 300 employees across five cities in three countries.
Simployer helps organisations develop and take care of their employees, and offers digital HRM services that streamline internal routines and processes. Our product portfolio has solutions for every part of the employee journey.
How to apply
Send your CV and a short note about an architectural decision you made and why. We review applications continuously. [Contact person, deadline]