Senior Software Engineer, Agent Platform & APIs

Alpaca; Greater London; On-site; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Stock options

Health benefits

Home-office setup (USD 500)

Monthly stipend (USD 150)

Job summary

Alpaca, a US-headquartered, global leader in brokerage infrastructure, is seeking a Senior Software Engineer to build the developer platform that agents and partners use to integrate and build on. You evolve Alpaca’s MCP servers, tools, and skills, and you build the APIs behind them. You play a central role to define the architecture that provides the fastest time to market for integrators.

Builders who embed Alpaca for their end users all use this surface. This is a hands-on role.

Qualifications

• 5+ years of software engineering with ownership of production systems.
• Shipped a developer-facing API, SDK, or platform.
• Experience with MCP or related standards in production.
• Strong API design, schemas, compatibility and reliable responses.
• Proficient in Python or TypeScript; willing to work in Go.
• Strong architectural judgment and shipping under evolving requirements.
• Good communication with product, compliance and risk teams.

Responsibilities

• Design and build the developer platform: MCP servers, tools, and APIs.
• Evolve the platform as MCP protocol and standards change.
• Create new APIs for trading and account capabilities.
• Decide components the platform renders to accelerate app development.
• Maintain production reliability and quality for services you build.
• Mentor engineers and raise design and implementation quality.

Skills

5+ years experience

Shipped API/SDK

MCP architecture

API design

Python

TypeScript

Go

Architectural judgment

Clear communication

Job description

Alpaca, a US-headquartered, global leader in brokerage infrastructure, is seeking a Senior Software Engineer to build the developer platform that agents and partners use to integrate and build on. You evolve Alpaca’s MCP servers, tools, and skills, and you build the APIs behind them. You play a central role to define the architecture that provides the fastest time to market for integrators.

Builders who embed Alpaca for their end users all use this surface. This is a hands-on role.