Backend System Design jobs

Senior Backend Engineer, Integrations

Jobgether · Posted Nov 12, 2026

Open

Remote, Switzerland
Remote
Full-time · Senior
6+ years

Senior Backend Engineer, Integrations

Jobgether · Posted Nov 12, 2026

Open

Remote, Switzerland
Remote
Full-time · Senior
6+ years

Senior Backend Engineer, Integrations

Jobgether · Posted Nov 12, 2026

Open

Remote, France
Remote
Full-time · Senior
6+ years

Apply with RefersoAI Apply on careers page

Develop and maintain critical integrations with major Online Travel Agencies (OTAs), evolving a monolithic architecture toward scalable, service-oriented systems, and enabling backend capabilities for AI agents.

Compensation

Competitive Compensation: Market-aligned salary based on the applicant's country of residence.

Responsibilities

Design, develop, deploy, and maintain robust backend services using PHP and Go
Lead the extraction of services from an existing monolithic architecture
Collaborate closely with Product Managers and cross-functional stakeholders to shape technical priorities
Design and implement high-quality APIs that enable AI agents and automated workflows
Optimize application performance, including page speed, response times, latency, and overall system reliability

Requirements

Nice to have: AI agent API design
Nice to have: LLM-powered applications
Nice to have: AI-powered coding assistants (Claude Code, Cursor, GitHub Copilot)
Nice to have: AWS

Skills

PHP Go Backend system design API design (REST, GraphQL)

Senior Backend Engineer, Integrations

Jobgether · Posted Nov 12, 2026

Open

Remote, United Kingdom
Remote
Full-time · Senior
6+ years

Apply with RefersoAI Apply on careers page

Join a fast-growing technology environment and help build and scale the backend infrastructure powering a leading vacation rental management platform used by property managers worldwide. In this role, you will join the Core Engineering team, responsible for developing and maintaining critical integrations with major Online Travel Agencies (OTAs).

Compensation

Competitive Compensation: Market-aligned salary based on the applicant's country of residence.

Responsibilities

Design, develop, deploy, and maintain robust backend services using PHP and Go, ensuring scalability, reliability, and high performance.
Lead the extraction of services from an existing monolithic architecture by defining clear service boundaries, ownership models, and pragmatic migration strategies.
Collaborate closely with Product Managers and cross-functional stakeholders to shape technical priorities and ensure backend solutions deliver meaningful business value.
Design and implement high-quality APIs that enable AI agents and automated workflows to interact reliably with guest-facing product capabilities.
Optimize application performance, including page speed, response times, latency, and overall system reliability, working closely with frontend engineering teams.

Requirements

Nice to have: AWS
Nice to have: AWS SQS
Nice to have: Designing APIs for AI agents
Nice to have: LLM-powered applications
Nice to have: AI-powered coding assistants (Claude Code, Cursor, GitHub Copilot)

Senior Backend Engineer, Integrations

Jobgether · Posted Nov 12, 2026

Open

Remote, Germany
Remote
Full-time · Senior
6+ years

Apply with RefersoAI Apply on careers page

Design, develop, deploy, and maintain robust backend services using PHP and Go, ensuring scalability, reliability, and high performance, focusing on integrations with major Online Travel Agencies (OTAs) and evolving monolithic architecture to service-oriented systems.

Compensation

Competitive Compensation: Market-aligned salary based on the applicant's country of residence.

Responsibilities

Design, develop, deploy, and maintain robust backend services using PHP and Go
Lead the extraction of services from an existing monolithic architecture
Collaborate closely with Product Managers and cross-functional stakeholders
Design and implement high-quality APIs that enable AI agents and automated workflows
Optimize application performance, including page speed, response times, latency, and overall system reliability

Requirements

Nice to have: AI agent API design
Nice to have: LLM-powered applications
Nice to have: AI-powered coding assistants (Claude Code, Cursor, GitHub Copilot)
Nice to have: AWS

Skills

PHP Go Backend System Design API Design (REST, GraphQL)

Full Stack Engineer, Business Applications & AI

Chowbus · Posted Nov 10, 2026

Open

Chicago, Illinois, United States
Hybrid
Full-time · Mid
$100K–$130K per year
3–5 years
Visa sponsorship

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Hiring an engineer to build the customer lifecycle project, a high-priority platform that streamlines and scales internal business workflows from restaurant onboarding to customer success to sales and technical operations.

Compensation

Base salary range: $100,000–$130,000 per year, based on experience and skills.

Responsibilities

Design, build, and operate backend services that power onboarding, customer success, and sales workflows
Work with onboarding, operations, and sales teams to understand problems, clarify requirements, and deliver improvements from idea to launch
Design data models and APIs that stay reliable as business needs change
Build integrations with Salesforce and other business systems, handling authentication, permissions, data sync, and failure cases
Build AI-powered workflows that connect models with tools and APIs to retrieve information, assist users, and complete tasks with appropriate human review

Requirements

Nice to have: AI agents
Nice to have: LLM-powered applications
Nice to have: tool calling
Nice to have: structured outputs
Nice to have: human-in-the-loop workflows

Skills

Java Go Backend system design

Senior Backend Engineer, Integrations

Senior Backend Engineer, Integrations

Compensation

Responsibilities

Requirements

Skills

Benefits

Senior Backend Engineer, Integrations

Compensation

Responsibilities

Requirements

Skills

Senior Backend Engineer, Integrations

Compensation

Responsibilities

Requirements

Senior Backend Engineer, Integrations

Compensation

Responsibilities

Requirements

Skills

Full Stack Engineer, Business Applications & AI

Compensation

Responsibilities

Requirements

Skills

Benefits

Skills

Benefits

Benefits

Benefits