Senior Backend Engineer: Scalable APIs & AI Workflows

Seamless; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Job summary

Seamlessly is seeking a senior backend engineer to own server-side foundations, design scalable APIs, and integrate with the Salesforce platform at enterprise scale.

You will build AI workflows to convert unstructured inputs into structured CRM data, ensure performance, security, and reliability, and help shape the architecture as Seamlessly grows.

This role requires 10+ years of production experience with TypeScript backends and a passion for shipping high-quality, boringly reliable software.

Qualifications

• 10+ years of engineering experience, senior production experience on TypeScript backends.
• Strong API design instincts and a track record of integrations that scale.
• Salesforce platform experience (Apex, SOQL, REST APIs, custom metadata).
• An eye for security and data handling at enterprise standards.

Responsibilities

• Design and build scalable backend services that power our mobile apps.
• Integrate deeply with the Salesforce platform to read, write, and reflect customer metadata at enterprise scale.
• Build AI workflows that extract structured data from unstructured input.
• Own performance, reliability, and security across the full backend.
• Shape the architecture as Seamlessly grows.

Skills

10+ years engineering experience

API design

Salesforce integration

Security best practices

Tools

Apex

SOQL

REST APIs

TypeScript

Job description

Seamlessly is seeking a senior backend engineer to own server-side foundations, design scalable APIs, and integrate with the Salesforce platform at enterprise scale.

You will build AI workflows to convert unstructured inputs into structured CRM data, ensure performance, security, and reliability, and help shape the architecture as Seamlessly grows.

This role requires 10+ years of production experience with TypeScript backends and a passion for shipping high-quality, boringly reliable software.