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Senior Backend Engineer | Handbook team

Simployer
Polandfull_timeVerifiedPosted 18 Sept 2025

About the role

Join our team as a Senior Backend Engineer at Simployer!


Simployer is transforming HR tech, and we’re looking for an experienced Senior Backend Engineer to join our growing engineering team. You’ll play a key role in building robust and scalable backend services that power seamless HR systems and enable exceptional user experiences.

What We Offer

  • Collaborative Culture – Join a supportive, dynamic team dedicated to learning and growth.
  • Professional Development – Access opportunities to expand your skills and grow within the organization.
  • Competitive Compensation – Enjoy a market-aligned salary and benefits package.
  • Real Impact – Make a significant impact on our products, clients, and business.

About the Role

Do you have hands-on experience developing distributed systems, working with Azure cloud infrastructure, and a passion for building secure and high-performance APIs? Then we’d love for you to join us in shaping the future of HR technology, as we continue to innovate with AI-powered solutions and modern architecture.

What You Will Do:

  • Design backend architecture and implement scalable systems and APIs using modern programming languages and frameworks.
  • Collaborate closely with frontend engineers, product managers, and designers to develop secure and reliable features that deliver real customer value.
  • Take ownership of backend components, ensuring they are performant, maintainable, and aligned with architectural standards.
  • Contribute to design discussions, technical planning, and system architecture decisions across projects.
  • Work with relational and non-relational databases to ensure efficient data storage, access, and integrity.
  • Improve CI/CD pipelines, automated testing, and observability for backend systems.
  • Contribute to the evolution of internal tools and libraries to promote reusability and consistency across services.
  • Embrace infrastructure as code and containerization to streamline deployments and environment management.
  • Stay up-to-date with the latest backend technologies and engineering best practices.
  • Mentor and support junior engineers, helping grow the team’s technical strength and collaboration.
  • Leverage generative AI and automation tools to enhance development efficiency, testing, and documentation.

What You Will Bring to the Team:

  • 5+ years of experience in backend development, with a strong command of C# and the .NET ecosystem.
  • Solid understanding of backend system architecture — including service design, data modeling, scalability, and API design (REST and/or GraphQL).
  • Experience with relational databases (e.g., PostgreSQL, SQL Server) and familiarity with NoSQL solutions.
  • Proficiency with Azure cloud services, including containerized deployments using tools like Docker and Kubernetes.
  • Strong testing mindset with experience writing unit, integration, and end-to-end tests.
  • Familiarity with CI/CD pipelines, version control (Git), and agile development practices.
  • Experience with secure coding practices and building resilient systems.
  • Ability to take initiative in unclear situations — comfortable making decisions and driving development forward when specifications are incomplete or evolving.
  • Comfortable working in cross-functional teams and communicating technical concepts clearly.
  • Interest or experience in leveraging generative AI in development workflows.
  • Strong communication skills in English, both written and verbal.

What We See as a Plus:

  • Experience with event-driven systems and message queues (e.g., Azure Service Bus is preferred; Kafka, RabbitMQ are a plus).
  • Exposure to microservices and service mesh architectures.
  • Experience with observability tools such as Azure Application Insights or New Relic for monitoring, tracing, and diagnostics.
  • Experience with domain-driven design (DDD) or clean architecture.
  • Comfort working across the stack — experience with React and TypeScript is a plus.
  • Exposure to infrastructure-as-code and DevOps tools (e.g., Terraform, Azure DevOps, GitHub Actions).

Message from the Hiring Manager:

“Hi, my name is Ali and I’m the Engineering Manager for the Handbooks team at Simployer. Our product, Simployer Handbooks, helps HR departments ensure that employees and managers can easily access essential information about ways of working, company-specific policies, and local laws and regulations. As a Senior Backend Engineer on our team, you’l

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Company

Simployer

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