Principal Software Engineer - Product Platforms
Helsinki, Uusimaa, Finland On-site
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About the role
We’re looking for a Principal Software Engineer to help define and build shared, API-first product platforms at AlphaSense that power multiple product surfaces, integrations, and agentic workflows. In this role, you’ll focus on building platforms as products: well-designed APIs, clear contracts, strong reliability guarantees, and a roadmap driven by real product needs. These platforms are consumed by internal product teams, external integrations, including AI agents. This role sits at the intersection of hands-on engineering and cross-product technical leadership. You’ll stay close to the code while shaping how product platforms are designed, evolved, and adopted across the company. You’ll also work across multiple teams and domains, helping to align long-term technical direction while still owning end-to-end systems. This is not a people-management role, nor is it a purely advisory architecture role. We’re explicitly looking for a Principal who enjoys building, prototyping, iterating, and solving complex problems in production.
What you'll bring
- Extensive experience as a senior staff/principal-level software engineer working on applications and backend systems
- Experience building product platforms or shared services consumed by multiple product teams
- Proven track record of designing, building, and operating APIs at scale
- Strong hands-on experience with RESTful APIs
- Some experience with GraphQL (design, usage, or operating in production)
- Deep understanding of system design, performance, reliability, and evolution over time
- Strong bias toward hands-on contribution and ownership of real systems
- Ability to influence technical direction across teams through credibility and execution
- Experience building or enabling agentic or AI-driven workflows
- Familiarity with MCP (Model Context Protocol) or similar agent integration patterns
- Experience working in large-scale, distributed systems environments
- Exposure to API governance, versioning strategies, and backward compatibility at scale