Senior Backend developer

Assignment overview: we're looking for a Backend Developer to join the Stockholm-based engineering team. This is a technical developer role and will report directly to the eMSP Technical Lead. As one of the engineers in a small, cross-functional team, you will have genuine influence over technical decisions, architecture, tooling, and how they work day-to-day. Responsibilities Backend Development & Cloud Infrastructure Design, build, and maintain backend services using modern .NET / C#. Develop and operate containerized services on AWS (primarily ECS/Fargate). Build and manage infrastructure as code using Pulumi. Develop integrations between internal services and external platforms. Contribute to solution design, architecture decisions, and technical planning. Improve and maintain GitLab CI/CD pipelines, deployment workflows, and automated testing. Enhance monitoring, logging, tracing, and alerting using the LGTM observability stack (Loki, Grafana, Tempo, Mimir). Platform & Charging Experience You will shape how our packages and delivers a seamless electric charging experience, including data ingestion, aggregation, and classification, for example mapping charging locations to determine accessibility and logistical feasibility for heavy vehicles. Payment & Billing Infrastructure You will contribute to the end-to-end payment ecosystem enabling charging across networks and countries, covering: Charging cards (physical and digital). Card distribution. Integration with charging station partners. Aggregated invoicing. Credit handling. VAT compliance across multiple jurisdictions. Integration with financial and accounting systems. Required Experience University degree or equivalent practical experience. Minimum 2 years of backend development experience. Solid experience with modern .NET / C# (recent versions). Hands-on experience building and operating containerized services in AWS. Experience with Infrastructure as Code, ideally Pulumi, Terraform, or similar tools. Familiarity with CI/CD pipelines and automated delivery workflows (e.g. GitLab CI). Experience designing and building integrations with third-party systems and APIs. Strong communication skills in English; Swedish is a plus. Nice to Have Experience with observability tooling and the LGTM stack (Loki, Grafana, Tempo, Mimir). Experience with OpenTelemetry. Background in e-mobility, eMSP, payment systems, or the EV charging domain. Personal Qualities Pragmatic and solution-oriented mindset. Trustworthy and relationship-driven. Strong communication skills and a collaborative attitude. Comfortable working independently with a strong sense of product ownership. Structured and self-driven. Entrepreneurial mindset. Key Areas of the Platform Charging Network and POI Management Ingesting and enriching charging location data. Maintaining a sanitized dataset suitable for HDV. Distributing usable location information to downstream consumers. Charging Sessions and Pricing Ingesting customer charging sessions from third-party systems. Enriching them with contextual data. Calculating incoming and outgoing costs. Performing plausibility monitoring to ensure data correctness. Customer Workflows Supporting customer data, invoicing and billing flows. Charging card ordering and integrations.