Senior Software Engineer, Platform (Runtime)

Quick Facts

• Role: Senior Software Engineer, Platform (Runtime)
• Start: ASAP
• Location/Work model: On-site in Stockholm, 5 days per week

Description

Join a high-growth product organization as a hands-on Senior Platform Engineer to build and operate platform infrastructure at scale, including application hosting/deployment and runtime environments. You will own critical platform capabilities end-to-end and drive reliability, scalability, operational excellence, and cost efficiency across the stack.

Responsibilities

• Own and develop the application hosting and deployment platform for production workloads
• Build, operate, and scale platform infrastructure and runtime environments
• Manage platform services such as storage, logging, workflows, authentication, and other infrastructure components
• Design and maintain custom domain infrastructure (SSL provisioning and DNS management) at scale
• Evaluate, onboard, and migrate third-party services as part of an evolving platform strategy
• Drive operational excellence via monitoring, alerting, incident response, runbooks, and capacity planning
• Ensure platform reliability, performance, scalability, security, and cost efficiency

Requirements

• 8+ years of senior-level relevant engineering experience
• Strong experience in Platform Engineering, SRE, Infrastructure Engineering, or similar disciplines
• Proven track record of building and operating platforms (not only building application features)
• Hands-on experience with platform engineering/platform hosting, production database operations, distributed systems, multi-tenant architectures, and control planes
• Hands-on experience with container orchestration and cloud-native infrastructure
• Experience managing vendors, evaluating technologies, leading migrations, and ensuring SLA compliance
• Strong operational mindset focused on uptime, latency, scalability, resilience, and cost optimization
• Ability to work on-site in Stockholm on a daily basis

Benefits

• Opportunity to own critical platform infrastructure end-to-end and build capabilities from the ground up
• Work on complex, large-scale systems where reliability, scalability, and operational excellence directly matter