Principal Platform Architect: APIs & AI Workflows

Devconnectplatform; United Kingdom; Remote; GBP 120,000 - 160,000; Full time

Job summary

AlphaSense is seeking a Principal Software Engineer to define and build API-first product platforms that power multiple product surfaces, integrations, and AI-driven workflows. You’ll operate at the intersection of hands-on engineering and technical leadership, shaping platform design, evolution, and adoption across the company.

You will own high-scale APIs, guide cross-team architectural decisions, and mentor engineers while delivering reliable, observable, and secure platforms that enable

Qualifications

• Extensive experience as a senior staff/principal-level software engineer.
• Experience building product platforms or shared services for multiple teams.
• Proven track record of designing, building, and operating APIs at scale.
• Strong hands-on experience with RESTful APIs.
• Some experience with GraphQL in design, usage, or production.
• Deep understanding of system design, performance, reliability, and evolution.
• Hands-on contribution and ownership of real systems; ability to influence technical direction across teams.

Responsibilities

• Act as a technical owner and force multiplier for API-first architecture.
• Design, build, and evolve high-scale APIs used by internal teams, customers, and agents.
• Lead the development of agentic workflows and orchestration patterns.
• Drive API standards and best practices through hands-on work and reviews.
• Mentor senior engineers and raise the technical bar across the organization.

Skills

Senior Engineer

API design

RESTful APIs

GraphQL

Distributed systems

Mentoring

Hands-on coding

API governance

Job description

AlphaSense is seeking a Principal Software Engineer to define and build API-first product platforms that power multiple product surfaces, integrations, and AI-driven workflows. You’ll operate at the intersection of hands-on engineering and technical leadership, shaping platform design, evolution, and adoption across the company.

You will own high-scale APIs, guide cross-team architectural decisions, and mentor engineers while delivering reliable, observable, and secure platforms that enable