Senior PHP & React Engineer — Enterprise Integrations

SINGU; Paris Township (MI); On-site; USD 120,000 - 180,000; Full time

Job summary

SINGU is building Europe’s leading PropTech platform for managing multi-site real estate operations. This role focuses on designing secure, high-performance PHP backends and extending React frontends to deliver enterprise integrations for global clients.

You’ll own technical design, API contracts, and data import/export pipelines, mentor peers, and work with AI-assisted tooling to accelerate delivery while maintaining security and scalability across large datasets.

Qualifications

• 5+ years of commercial PHP backend development (7.4+/8).
• Expert PostgreSQL: optimization, indexing, migrations on large datasets.
• Proven experience designing and maintaining REST APIs.
• Hands-on experience with data import pipelines and external system integrations.
• Working React knowledge; deliver end-to-end features when needed.
• Strong focus on security and performance for high-volume operations.
• Full ownership from design to production and support.
• Experience mentoring other developers and doing meaningful code reviews.
• You actively use AI tools (Claude, Cursor, Copilot, ChatGPT) in daily work.
• Communicative English (B2+) and fluent Polish.

Responsibilities

• Design and implement integrations and custom functionality for enterprise clients.
• Build secure, high-performance backend services in PHP, and extend React frontends when needed.
• Design and optimize data import/export processes with focus on security, data integrity and performance.
• Find and remove performance bottlenecks in application and database layers.
• Take part in technical breakdown and estimation; co-own API contracts.
• Review code and mentor mid-level developers; be a go-to person for backend topics.
• Collaborate with Tech Lead, QA, and other SINGU teams.

Skills

PHP backend development

PostgreSQL

REST APIs

Data import pipelines

React

Security

Mentoring

AI tools usage

English (B2+)

Polish

Tools

Phalcon framework

Docker

AWS

CI/CD

Git

SSO (SAML / OIDC)

ERP integrations

Job description

SINGU is building Europe’s leading PropTech platform for managing multi-site real estate operations. This role focuses on designing secure, high-performance PHP backends and extending React frontends to deliver enterprise integrations for global clients.

You’ll own technical design, API contracts, and data import/export pipelines, mentor peers, and work with AI-assisted tooling to accelerate delivery while maintaining security and scalability across large datasets.