Staff API Platform Engineer (Remote-friendly)

AlphaSense Oy; Helsinki; Hybrid; EUR 120,000 - 170,000; Full time

Benefits offered by this job

Private healthcare

Relocation support for employees

Flexible working arrangements

Job summary

AlphaSense Oy is seeking a Staff Software Engineer to help build shared, API-first product platforms powering multiple product surfaces, integrations, and agentic workflows. You will own end-to-end API design and platform evolution while staying close to code and guiding teams across the organization.

You will design, build, and operate RESTful APIs at scale, with some GraphQL exposure, and partner with Product, Platform, and SRE teams to ensure reliability, observability, and security.

Qualifications

• Significant experience as a senior or staff-level software engineer.
• Experience building product platforms or shared services.
• Track record of designing, building, and operating APIs at scale.
• Some experience with GraphQL (design, usage, or operating in production).
• Solid 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 within and across teams through credibility and execution.

Responsibilities

• Serve as a technical owner for API-first systems within your team and domain.
• Design, build, and evolve high-scale APIs used by internal teams, external customers, and intelligent agents.
• Apply API governance, versioning strategies, and backward compatibility in your systems.
• Contribute to API standards, design principles, and best practices through hands-on work and technical reviews.
• Tackle complex problems where requirements are ambiguous and constraints are real.
• Partner with Product, Platform, and SRE teams to ensure APIs are reliable, observable, secure, and scalable.
• Identify and reduce technical risks within your domain.
• Mentor engineers and raise the technical bar through example.

Skills

Senior software engineer

Backend systems

API design

RESTful APIs

GraphQL

System design

Mentoring

Ownership

Job description

AlphaSense Oy is seeking a Staff Software Engineer to help build shared, API-first product platforms powering multiple product surfaces, integrations, and agentic workflows. You will own end-to-end API design and platform evolution while staying close to code and guiding teams across the organization.

You will design, build, and operate RESTful APIs at scale, with some GraphQL exposure, and partner with Product, Platform, and SRE teams to ensure reliability, observability, and security.